WebSVN – wimsdev – Blame – /trunk/wims/src/Misc/canvasdraw/canvasdraw.c

Rev	Author	Line No.	Line
15111	schaersvoo	1	/*27/7/2013 version 0.01
7614	schaersvoo	2	"Inspired" by FLY program: http://martin.gleeson.com/fly
		3	*********************************************************************************
		4	* J.M. Evers 7/2013 *
		5	* This is all just amateur scriblings... So no copyrights. *
		6	* This source code file, and compiled objects derived from it, *
		7	* can be used and distributed without restriction, including for commercial use *
15111	schaersvoo	8	* No warrenty whatsoever *
7614	schaersvoo	9	*********************************************************************************
		10	*/
15734	schaersvoo	11	#define VERSION "0.5"
18104	georgesk	12
		13	#define _GNU_SOURCE
		14	#include <string.h>
		15
7848	bpr	16	#include "canvasdraw.h"
15348	bpr	17	void *tmp_buffer;
		18	FILE *js_include_file;
7614	schaersvoo	19	/******************************************************************************
		20	** Internal Functions
		21	******************************************************************************/
		22	void add_to_buffer(char tmp); / add tmp_buffer to the buffer */
		23	void sync_input(FILE infile);/ proceed with inputfile */
14078	bpr	24	void reset();/* reset some global variables like "use_filled", "use_dashed" */
7614	schaersvoo	25	int get_token(FILE infile); / read next char until EOL*/
8225	bpr	26	/*
7614	schaersvoo	27	int x2px(double x);
		28	int y2px(double y);
8225	bpr	29	*/
15111	schaersvoo	30	double px2x(int x);
		31	double px2y(int y);
7906	schaersvoo	32	double get_real(FILE infile,int last); / read a value; calculation and symbols allowed */
7614	schaersvoo	33	char str_replace ( const char word, const char sub_word, const char rep_word );
15111	schaersvoo	34	char get_color(FILE infile,int last); /* read hex-color or colorname -> hex */
7906	schaersvoo	35	char get_string(FILE infile,int last); /* get the string at the end of a command */
7614	schaersvoo	36	char get_string_argument(FILE infile,int last); /* the same, but with "comma" as separator */
15111	schaersvoo	37	char convert_hex2rgb(char hexcolor);
7614	schaersvoo	38	void make_js_include(int canvas_root_id);
		39	void check_string_length(int length);/* checks if the length of string argument of command is correct */
15111	schaersvoo	40	FILE *js_include_file;
7614	schaersvoo	41	FILE get_file(int line_number, char **filename);
15111	schaersvoo	42	FILE infile; / will be stdin */
7614	schaersvoo	43	/******************************************************************************
		44	** global
		45	******************************************************************************/
		46	int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
		47	int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
		48	/* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
		49	int xsize = 320;
		50	int ysize = 320;
		51	double xmin = 0.0;
		52	double xmax = 320.0;
		53	double ymin = 0.0;
		54	double ymax = 320.0;
11893	schaersvoo	55	double tmax = 0;
		56	double tmin = 0;
7614	schaersvoo	57	/* flag to indicate parsing of line status */
8224	bpr	58	int done = FALSE;
7614	schaersvoo	59	int type; /* eg command number */
15111	schaersvoo	60	int onclick = 0;
		61	/*
15116	bpr	62
		63	1 = onclick ;
		64	2 = draggable ;
		65	3 = click+slideable ;
		66	4 = slideable without click
15111	schaersvoo	67	5 = draggable + slideable
		68	*/
14208	schaersvoo	69	char *slider_type="0";
15111	schaersvoo	70	char *my_sliders = "[-1]";
		71	int use_slider = -1;
		72	int last_slider = 0;
		73	double double_data[MAX_INT+1];
		74	int int_data[MAX_INT+1];
		75	int dragstuff[MAX_DRAGSTUFF];
		76	int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis: only once per object type */
		77	double affine_matrix[] = {1,0,0,1,0,0};
7785	schaersvoo	78	int use_affine = FALSE;
7614	schaersvoo	79	int use_rotate = FALSE;
14078	bpr	80	int use_filled = 0; /* 0:no fill, 1:fill,2=grid?,3=hatch?,4=diamond?,5=dot?,6=image? */
		81	int use_dashed = FALSE; /* dashing not natively supported in firefox, for now... */
15111	schaersvoo	82	double angle = 0.0;
7614	schaersvoo	83	char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
9329	schaersvoo	84	char *getfile_cmd = "";
15111	schaersvoo	85	int reply_format = 0;
		86	unsigned int canvas_root_id;
		87	char *css_class;
		88	int font_size;
		89	char *draw_type;
		90	int jsplot_cnt = -1; /* keepint track on the curve identity */
		91	int input_cnt = 0;
		92	int dashtype[2] = { 4 , 4 }; /* just line_px and space_px: may have more arguments...if needed in future */
		93	char *function_label = "[\"f(x)=\",\"g(x)=\",\"h(x)=\"]";
		94	int drag_type = -1;/* 0,1,2: xy,x,y */
		95	int use_offset = 0;/* use_offset only for text shape objects... 0=none;1=yoffset;2=xoffset;3=xyoffset;4=centered*/
		96	int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
		97	int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
		98	int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc */
		99	int use_axis = FALSE;
		100	int use_axis_numbering = -1;
		101	int no_reset = FALSE;
		102
7614	schaersvoo	103	/******************************************************************************
		104	** Main Program
		105	******************************************************************************/
		106	int main(int argc, char *argv[]){
14066	bpr	107	/* need unique id for every call to canvasdraw: rand(); is too slow...will result in many identical id's */
12104	schaersvoo	108	struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);
15111	schaersvoo	109	canvas_root_id = (unsigned int) tv.tv_usec;
7614	schaersvoo	110	infile = stdin;/* read flyscript via stdin */
		111	int i,c;
15111	schaersvoo	112	for(i=0;i<MAX_DRAGSTUFF;i++){dragstuff[i] = 0;}
7614	schaersvoo	113	for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
14066	bpr	114	int use_snap = 0; /* 0 = none 1=grid: 2=x-grid: 3=y-grid: 4=snap to points */
8448	schaersvoo	115	int print_drag_params_only_once = FALSE;/* avoid multiple useless identical lines about javascript precision and use_dragdrop */
7614	schaersvoo	116	int line_width = 1;
		117	int decimals = 2;
15111	schaersvoo	118	int use_dragstuff = 0;
8365	schaersvoo	119	int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate.May be redefined before every object */
15111	schaersvoo	120	int use_userdraw = 0; /* 0=none,1=userdraw,2=multidraw flag to indicate user interaction */
9329	schaersvoo	121	int use_tooltip = -1; /* 1= tooltip 2= popup window*/
15601	schaersvoo	122	int use_parametric = FALSE;/* will be reset after parametric plotting */
7614	schaersvoo	123	char *tooltip_text = "Click here";
		124	char temp = ""; / */
		125	char bgcolor = "";/ used for background of canvas_div ; default is tranparent */
		126	char *stroke_color = "255,0,0";
14208	schaersvoo	127	char *fill_color = "255,255,255";
15313	schaersvoo	128	char font_family = "12px Arial"; / commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
7614	schaersvoo	129	char *font_color = "#00000";
15111	schaersvoo	130	draw_type = "points";
7614	schaersvoo	131	char *fly_font = "normal";
15111	schaersvoo	132	css_class = "none";
7614	schaersvoo	133	char *flytext = "";
11006	schaersvoo	134	int canvas_type = DRAG_CANVAS; /* to use a specific canvas for filling etc */
7614	schaersvoo	135	int pixelsize = 1;
11763	schaersvoo	136	int fill_cnt = 0;
15111	schaersvoo	137	int use_zoom = 0;
15313	schaersvoo	138	font_size = 12;/* this may lead to problems when using something like <code>fontfamily Italic 24px Arial</code> the ''fontsize`` value is not substituted into fontfamily !! */
8388	schaersvoo	139	int fly_font_size = 12; /fly_font_size is relative to this... /
7614	schaersvoo	140	for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
8365	schaersvoo	141	int arrow_head = 8; /* size in px needed for arrow based userdraw: "userdraw arrow,color" */
7833	schaersvoo	142	int crosshair_size = 5; /* size in px*/
8365	schaersvoo	143	int plot_steps = 250;/* the js-arrays with x_data_points and y_data_points will have size 250 each: use with care !!! use jscurve when precise plots are required */
14066	bpr	144	int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange: just to flag an error message */
15111	schaersvoo	145	int object_cnt = 0; /counter to identify the "onclick" ojects ; 0 is first object set onclick: reply[object_cnt]=1 when clicked ; otherwise reply[object_cnt]=0 ; object_cnt is only increased when another object is set again /
7614	schaersvoo	146	int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
9433	schaersvoo	147	int boxplot_cnt = 0;
15111	schaersvoo	148	int drawxml_cnt = 0;
11890	schaersvoo	149	int numberline_cnt = 0;
17583	schaersvoo	150	int snap_to_points_cnt = 0;
8074	schaersvoo	151	int reply_precision = 100; /* used for precision of student answers / drawings */
15111	schaersvoo	152	char rotation_center = "null";/ needs to be removed... but is used for canvas CTX based rotation*/
		153	double rotationcenter[] = {0,0}; /* use for recalculating x/y values on rotation() */
11893	schaersvoo	154	int use_animate = 0; /* used for jscurve / js parametric */
7823	schaersvoo	155	int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
8365	schaersvoo	156	size_t string_length = 0; /* measure the size of the user input fly-string */
		157	double stroke_opacity = 0.8; /* use some opacity as default */
14208	schaersvoo	158	double fill_opacity = 0.5;/* use some opacity as default */
7614	schaersvoo	159	char *URL = "http://localhost/images";
		160	memset(buffer,'\0',MAX_BUFFER);
		161	void *tmp_buffer = "";
		162	/* default writing a unzipped js-include file into wims getfile directory */
		163	char *w_wims_session = getenv("w_wims_session");
12104	schaersvoo	164	if( w_wims_session == NULL \|\| *w_wims_session == 0 ){canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");}
7614	schaersvoo	165	int L0=strlen(w_wims_session) + 21;
		166	char getfile_dir = my_newmem(L0); / create memory to fit string precisely */
		167	snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely */
		168	mode_t process_mask = umask(0); /* check if file exists */
		169	int result = mkdir(getfile_dir, S_IRWXU \| S_IRWXG \| S_IRWXO);
		170	if( result == 0 \|\| errno == EEXIST ){
		171	umask(process_mask); /* be sure to set correct permission */
8224	bpr	172	char *w_session = getenv("w_session");
7614	schaersvoo	173	int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
12104	schaersvoo	174	getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
8224	bpr	175	snprintf(getfile_cmd,L1,"wims.cgi?session=%s&cmd=getfile&special_parm=%d.js",w_session,canvas_root_id);/* extension ".gz" is MANDATORY for webserver */
13306	obado	176	/* write the include tag to html page:<script src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
7614	schaersvoo	177	/* now write file into getfile dir*/
14066	bpr	178	char w_wims_home = getenv("w_wims_home"); / "/home/users/wims": we need absolute path for location */
7614	schaersvoo	179	int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
		180	char location = my_newmem(L2); / create memory to fit string precisely */
		181	snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/absolute path /
		182	js_include_file = fopen(location,"w");/* open the file location for writing */
14066	bpr	183	/* check on opening...if nogood: mount readonly? disk full? permissions not set correctly? */
		184	if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN: could not write to javascript include file...check your system logfiles !" );}
7614	schaersvoo	185
		186	/* ----------------------------------------------------- */
11997	schaersvoo	187
7614	schaersvoo	188	/* while more lines to process */
		189
		190	while(!finished){
9329	schaersvoo	191	if(line_number>1 && found_size_command == 0 && use_tooltip != 2 ){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
7614	schaersvoo	192	type = get_token(infile);
		193	done = FALSE;
		194	/*
9385	schaersvoo	195	@ canvasdraw
15116	bpr	196	@ Canvasdraw will try use the same basic syntax structure as flydraw
17351	bpr	197	@ General syntax <ul><li>The transparency of all objects can be controlled by command <a href="#opacity">opacity [0-255],[0,255]</a></li><li>line width of any object can be controlled by command <a href="#linewidth">linewidth int</a></li><li>any may be dashed by using keyword <a href="#dashed">dashed</a> before the object command.<br> the dashing type can be controled by command <a href="#dashtype">dashtype int,int</a>please note: dashing may have different spacing depending on the angle of the line<br>see https://wimsedu.info/?topic=dashed-arrows-not-dashed-in-canvasdraw</li><li>a fillable object can be set fillable by starting the object command with an ''f`` (like ''frect``,''fcircle``,''ftriangle`` ...) or by using the keyword <a href="#filled">filled</a> before the object command.<br>The fill colour of ''non_userdraw`` objects will be the stroke colour...(flydraw harmonization 19/10/2013)<br> non-solid filling (grid,hatch,diamond,dot,text) is provided using command <a href="#fillpattern">fillpattern a_pattern</a><br>note: do not use a <b>f</b> with this non-solid pattern filling !<br>for <a href="#filltoborder">filltoborder x0,y0,color</a> or <a href="#filltoborder">fill x0,y0,color</a> type filling (eg fill a region around x0,y0 with color until a border is encountered),<br>there are non-solid pattern fill analogues:<ul><li><a href="#gridfill">gridfill x,y,dx,dy,color</a></li><li><a href="#hatchfill">hatchfill x,y,dx,dy,color</a></li><li><a href="#diamondfill">diamondfill x,y,dx,dy,color</a></li><li><a href="#dotfill">dotfill x,y,dx,dy,color</a></li><li><a href="#textfill">textfill x,y,color,sometext_or_char</a></li></ul></li><li>all draggable objects may have a <a href="#slider">slider</a> for translation / rotation; several objects may be translated / rotated by a single slider</li> <li> a draggable object can be set draggable by a preceding command <a href="#drag">drag x/y/xy</a><br>The translation can be read by javascript:read_dragdrop();The replyformat is: object_number : x-orig : y-orig : x-drag : y-drag<br>The x-orig/y-orig will be returned in maximum precision (javascript float)...<br>the x-drag/y-drag will be returned in defined ''precision`` number of decimals<br>Multiple objects may be set draggable / clickable (no limit)<br>not all flydraw objects may be dragged / clicked<br>Only draggable / clickable objects will be scaled on <a href="#zoom">zoom</a> and will be translated in case of panning.</li><li> a ''onclick object`` can be set ''clickable`` by the preceding keyword <a href="#onclick">onclick</a><br>not all flydraw objects can be set clickable</li><li><b>remarks using a '';`` as command separator</b>. Commands with only numeric or colour arguments may be using a '';`` as command separator (instead of a new line). Commands with a string argument may not use a '';`` as command separator !<br>these exceptions are not really straight forward... so keep this in mind.</li><li>almost every <a href="#userdraw">userdraw object,color</a> or <a href="#multidraw">multidraw</a> command ''family`` may be combined with keywords <a href="#snaptogrid">"snaptogrid \| xsnaptogrid \| ysnaptogrid \| snaptofunction</a> or command <code>snaptopoints x1,y1,x2,y2,...</code></li><li>every draggable \| onclick object may be combined with keywords <a href="#snaptogrid">snaptogrid \| xsnaptogrid \| ysnaptogrid \| snaptofunction</a> or command <code>snaptopoints x1,y1,x2,y2,...</code></li><li>almost every command for a single object has a multiple objects counterpart:<br><ul>general syntax rule:<li><code>object x1,y1,...,color</code></li><li><code>objects color,x1,y1,...</code></li></ul><li>All inputfields or textareas generated, can be styled individually using command <a href="#css">css some_css</a><br/>the fontsize used for labeling these elements can be controlled by command <a href="#fontsize">fontsize int</a> <br>command <code>fontfamily</code> is <b>not</b> active for these elements</li></ul>
		198	@ If needed multiple interactive scripts () may be used in a single webpage.<br>A function <code>read_canvas()</code> and / or <code>read_dragdrop()</code> can read all interactive userdata from these images.<br>The global array <code>canvas_scripts</code>will contain all unique random "canvas_root_id" of the included scripts.<br>The included local javascript "read" functions ''read_canvas%d()`` and ''read_dragdrop%d()`` will have this ''%d = canvas_root_id``<br>e.g. canvas_scripts[0] will be the random id of the first script in the page and will thus provide a function<br><code>fun = eval("read_canvas"+canvas_scripts[0])</code> to read user based drawings / inputfield in this first image.<br>The read_dragdrop is analogue.<br>If the default reply formatting is not suitable, use command <a href='#replyformat'>replyformat</a> to format the replies for an individual canvas script,<br>To read all user interactions from all included canvas scripts, use something like:<br><code>function read_all_canvas_images(){<br> var script_len = canvas_scripts.length;<br> var draw_reply = "";<br> var found_result = false;<br> for(var p = 0 ; p < script_len ; p++){<br>  var fun = eval("read_canvas"+canvas_scripts[p]);<br>  if( typeof fun === 'function'){<br>   var result = fun();<br>   if( result  && result.length != 0){<br>    if(script_len == 1 ){.return result;};<br>     found_result = true;<br>     draw_reply = draw_reply + result + "newline";<br>    };<br>   };<br>  };<br> if( found_result ){return draw_reply;}else{return null;};<br>};</code> <br>() Note: the speed advantage over <em>canvas-do-it-all</em> libraries is reduced to zero, when multiple canvasdraw scripts are present in a single page...<br>For example a typical canvasdraw script is between 5 and 40 kB...a large library like JSXgraph is approx 600 kB<br>In these cases it would be much faster to load a static general HTML5 canvas javascript draw library and parse it multiple raw fly instructions !<br>
		199	@ Canvasdraw can be used to paint a html5 bitmap image<br>by generating a tailor-made javascript include file: providing only the js-functionality needed to perform the job.<br>thus ensuring a minimal strain on the client browser <br>(unlike some popular ''canvas-do-it-all`` libraries, who have proven to be not suitable for low-end computers found in schools...)
15111	schaersvoo	200	@ You can check the javascript reply format in the wims tool <a href="http://localhost/wims/wims.cgi?lang=en&module=tool/directexec">direct exec</a>
17351	bpr	201	@ For usage within OEF (without anstype ''draw``), something like this (a popup function plotter) will work:<br><code>\\text{popup_grapher=wims(exec canvasdraw <br>popup<br>size 400,400<br>xrange -10,10<br>yrange -10,10<br>axis<br>axisnumbering<br>opacity 100,100<br>grid 2,2,grey,2,2,6,black<br>snaptogrid<br>linewidth 2<br>jsplot red,5*sin(1/x)<br>strokecolor green<br>functionlabel f(x)=<br>userinput function<br>mouse blue,22<br>)<br>}<br>\\statement{<br>\\popup_grapher<br>}</code>.
		202	@ Be aware that older browsers will probably not work correctly<br>no effort has been undertaken to add glue code for older browsers !! <br>in any case it is not wise to use older browsers...not just for canvasdraw.
15111	schaersvoo	203	@ Be aware that combining several different objects and interactivity may lead to problems.
14379	bpr	204	@ If you find flaws, errors or other incompatibilities -not those mentioned in this document- send <a href='mailto:jm.evers-at-schaersvoorde.nl'>me</a> an email with screenshots and the generated javascript include file.
17351	bpr	205	@ There is limited support for touch devices: touchstart, touchmove and touchend in commands <a href="#userdraw">userdraw primitives </a>, <a href="#multidraw">multidraw primitives </a>, <a href="#protractor">protractor</a>, <a href="#ruler">ruler</a> and probably a few others... <br>Only single finger gestures are supported (for now).<br>The use of a special pen is advised for interactive drawing on touch devices.<br>For more accurate user-interaction (numeric, eg keyboard driven drawings) with canvasdraw on touch devices: use the command family <a href="#userinput_xy">userinput</a>.
7614	schaersvoo	206	*/
		207	switch(type){
15111	schaersvoo	208	case END:finished = 1;done = TRUE;break;
		209	case 0:sync_input(infile);break;
11806	schaersvoo	210	case AFFINE:
7614	schaersvoo	211	/*
11806	schaersvoo	212	@ affine a,b,c,d,tx,ty
		213	@ defines a transformation matrix for subsequent objects
14066	bpr	214	@ use keyword <a href='#killaffine'>killaffine</a> to end the transformation...the next objects will be drawn in the original x/y-range
		215	@ a: Scales the drawings horizontally
		216	@ b: Skews the drawings horizontally
		217	@ c: Skews the drawings vertically
		218	@ d: Scales the drawings vertically
11806	schaersvoo	219	@ tx: Moves the drawings horizontally in xrange coordinate system
		220	@ ty: Moves the drawings vertically in yrange coordinate system
14078	bpr	221	@ the data precision may be set by preceding command ''precision int``
15541	schaersvoo	222	@ <b>note</b>: not all affine operations on canvasdraw objects will be identical to flydraw's behaviour. Make sure to check !
15111	schaersvoo	223	@%affine%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%#use larger linewith to improve selecting a draggable object !%linewidth 4%drag xy%frect 0,5,3,3,red%affine cos(pi/4),sin(pi/4),-cos(pi/2),sin(pi/2),-5,-5%drag xy%frect 0,5,3,3,red
15313	schaersvoo	224	@%affine+latex%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%strokecolor blue%fontfamily 42px Arial%centered%drag xy%latex 5,5,\\frac{123}{\\pi^{234}}%affine cos(pi/4),sin(pi/4),-cos(pi/2),sin(pi/2),-5,-5%drag xy%latex 5,5,\\frac{123}{\\pi^{234}}
7614	schaersvoo	225	*/
11806	schaersvoo	226	for(i = 0 ; i<6;i++){
7614	schaersvoo	227	switch(i){
15111	schaersvoo	228	case 0: affine_matrix[0] = get_real(infile,0);break;
		229	case 1: affine_matrix[1] = get_real(infile,0);break;
		230	case 2: affine_matrix[2] = get_real(infile,0);break;
		231	case 3: affine_matrix[3] = get_real(infile,0);break;
		232	case 4: affine_matrix[4] = get_real(infile,0);break;
		233	case 5: affine_matrix[5] = get_real(infile,1);
11806	schaersvoo	234	use_affine = TRUE;
		235	break;
7614	schaersvoo	236	default: break;
		237	}
		238	}
11806	schaersvoo	239	break;
14394	schaersvoo	240	case ALLOW_DUPLICATES:
		241	/*
14393	schaersvoo	242	@ duplicates \|\| allowdups
		243	@ keyword (no arguments)
15645	bpr	244	@ only useful in case of a <a href="#multidraw">multidraw</a> student reply.
		245	@ only useful in default <a href="#replyformat">replyformat</a> (eg in case of a not specified replyformat).
14396	bpr	246	@ if set, duplicate (x:y) coordinates will not be removed from the student reply.
15645	bpr	247	@ technical: a javascript variable "allow_duplicate_answer = 1;" is declared.
		248	@ default for command multidraw is: removal of duplicates.
14393	schaersvoo	249	*/
15111	schaersvoo	250	fprintf(js_include_file,"var allow_duplicate_answers = 1;");
14393	schaersvoo	251	break;
11806	schaersvoo	252	case ANGLE:
7614	schaersvoo	253	/*
11806	schaersvoo	254	@ angle xc,yc,width,start_angle,end_angle,color
		255	@ width is in x-range
14208	schaersvoo	256	@ angles are in degrees
		257	@ not compatible with ''flydraw``
11806	schaersvoo	258	@ will zoom in/out
15690	schaersvoo	259	@ may be set onclick or drag&drop
14208	schaersvoo	260	@ if angle size is controlled by command <a href='#slider'>slider</a>, use radians to set limits of slider
15111	schaersvoo	261	@ ''angle`` and <a href="#arc">arc</a> are exceptions in case of sliders...they are always active (e.g. not click-activated)
12110	schaersvoo	262	@%angle%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor orange%angle 0,0,4,10,135,blue
15111	schaersvoo	263	@%angle_slider%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 3%strokecolor blue%slider -2pi,2pi,260,28,angle active degree,blue arrow%arrow 0,0,8,0,8,blue%fillpattern diamond%angle 0,0,2,0,0,blue%killslider%strokecolor red%slider -2pi,2pi,260,28,angle active radian,red arrow%arrow 0,1,8,1,8,red%fillpattern dot%angle 0,1,2,0,0,red
7614	schaersvoo	264	*/
11806	schaersvoo	265	for(i=0;i<7;i++){
7614	schaersvoo	266	switch(i){
11806	schaersvoo	267	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
15111	schaersvoo	268	case 1:double_data[1] = get_real(infile,0);
		269	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
15116	bpr	270	if(use_affine == TRUE ){ transform(2,2);}
15111	schaersvoo	271	break; /* y-values */
14208	schaersvoo	272	case 2:double_data[2] = get_real(infile,0);break; /* width x-range ! */
15111	schaersvoo	273	case 3:double_data[3] = 0.0174532925(get_real(infile,0) - angle);break; / start angle in degrees -> radians */
		274	case 4:double_data[4] = 0.0174532925(get_real(infile,0) - angle);break; / end angle in degrees -> radians */
11806	schaersvoo	275	case 5:stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	276	if( use_slider != -1 ){ onclick = 3; }/* always active in case of slider */
		277	decimals = find_number_of_digits(precision);
		278	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,17,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		279	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		280	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,17,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		281	add_to_buffer(tmp_buffer);
		282	dragstuff[17] = 1;
		283	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		284	if(onclick != 0){object_cnt++;}/* object_cnt++;*/
11806	schaersvoo	285	break;
7614	schaersvoo	286	}
		287	}
		288	break;
8386	schaersvoo	289
11806	schaersvoo	290	case ANIMATE:
7614	schaersvoo	291	/*
11930	schaersvoo	292	@ animate
11893	schaersvoo	293	@ keyword
15111	schaersvoo	294	@ if set, it will animate a point on a curve
17351	bpr	295	@ all other canvas object or group of objects (like lines,circles,rects,points...images,svg,latex,mathml etc)<br>may be animated using command <a href='#slider'>slider</a> with keyword 'anim'
14071	bpr	296	@ the animated point is a filled rectangle ; adjust colour with command <code>fillcolor colorname/hexnumber</code>
11893	schaersvoo	297	@ use linewidth to adjust size of the points
14078	bpr	298	@ will animate a point on -only- the next <a href='#jsplot'>jsplot/jscurve command</a>. Only a single call to <code>animate</code> is allowed...in case of multiple <code>animate</code> keywords, only the last one is valid
15111	schaersvoo	299	@ only usable in combination with command <a href='#jsplot'>jsplot</a> (normal functions or parametric)
13957	schaersvoo	300	@ moves repeatedly from <a href='#xrange'>xmin to xmax</a> or in case of a parametric function from <a href='#trange'>tmin to tmax</a>
17351	bpr	301	@ use commands <a href='#multilinewidth'>multilinewidth</a>, <a href='#multistrokecolor'>multistrokecolor</a> etc in case of multiple animated functions.<br>use multiple functions as argument in a single call to <a href='#jsplot'>jsplot color,fun1,fun2,fun3...fun_n</a>
13939	bpr	302	@%animate_1%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%linewidth 4%fillcolor red%animate%trange -2pi,2pi%linewidth 1%opacity 255,50%canvastype 100%fill 1.2,1.2,red%canvastype 101%fill -1.2,-1.2,blue%jsplot blue,7cos(x),5sin(2*x)
		303	@%animate_2%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%linewidth 4%fillcolor red%animate%trange -2pi,2pi%linewidth 1%opacity 255,50%canvastype 100%fill 1.2,1.2,red%canvastype 101%fill -1.2,-1.2,blue%multistrokecolors blue,blue,green,green,orange,orange%multilinewidth 2,2,3,3,1,1%jsplot blue,7cos(x),5sin(2x),9sin(x),5*cos(x),x^2,x
7614	schaersvoo	304	*/
13512	schaersvoo	305	use_animate++;
		306	if( use_animate == 1 ){
		307	fprintf(js_include_file,"\nvar trace_canvas = create_canvas%d(%d,xsize,ysize);\
		308	var trace_ctx = trace_canvas.getContext('2d');\
		309	trace_ctx.fillStyle = 'rgba(%s,%f)';\
		310	trace_ctx.strokeStyle = 'rgba(%s,%f)';\
		311	trace_ctx.lineWidth = %d;var anim_pos = 0;\n\
		312	function animate_this(){\
		313	var sync;\
		314	var synchrone = Math.floor(animation_steps/animation_funs);\
		315	trace_ctx.clearRect(0,0,xsize,ysize);\
		316	for(var p=0; p<animation_funs;p++){\
		317	sync = p*synchrone;\
		318	trace_ctx.fillRect(x_anim_points[sync+anim_pos]-%d, y_anim_points[sync+anim_pos]-%d,%d,%d);\
		319	};\
		320	setTimeout(function(){\
		321	requestAnimationFrame(animate_this); anim_pos++;}, 50\
		322	);\
		323	if(anim_pos >= animation_steps){anim_pos = 0;};\
		324	};",canvas_root_id,ANIMATE_CANVAS,fill_color,fill_opacity,stroke_color,stroke_opacity,line_width,line_width,line_width,2line_width,2line_width);
		325	}
		326	else
		327	{
17351	bpr	328	canvas_error("animate can only be used once<br>multiple curves may be animated using something like:<br>jsplot red,sin(x),cos(x),x^2,sin(2*x)");
13512	schaersvoo	329	}
7614	schaersvoo	330	break;
8386	schaersvoo	331
11806	schaersvoo	332	case ARC:
7614	schaersvoo	333	/*
11997	schaersvoo	334	@ arc xc,yc,x-width,y-height,start_angle,end_angle,color
15690	schaersvoo	335	@ may be set ''onclick`` or ''drag xy``
14208	schaersvoo	336	@ compatible with ''flydraw``
		337	@ attention: width & height in x/y-range
16832	bpr	338	@ for arrow hats on an arc, see command <a href='#arcarrow'>arcarrow or arrowarc</a>
14208	schaersvoo	339	@ better use command <a href='#angle'>angle</a> for use with a <a href='#slider'>slider</a>
15111	schaersvoo	340	@%arc%size 400,400%xrange -10,10%yrange -10,10%arc 0,0,4,4,10,135,red
13961	schaersvoo	341	@%arc_filled%size 400,400%xrange -10,10%yrange -10,10%opacity 255,60%filled%fillcolor green%arc 0,0,4,4,10,135,red
7614	schaersvoo	342	*/
11806	schaersvoo	343	for(i=0;i<7;i++){
		344	switch(i){
		345	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
15111	schaersvoo	346	case 1:double_data[1] = get_real(infile,0);
		347	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		348	if(use_affine == TRUE ){ transform(4,2);}
		349	break; /* y-values */
11806	schaersvoo	350	case 2:double_data[2] = get_real(infile,0);break; /* width x-range no pixels ! */
15111	schaersvoo	351	case 3:double_data[3] = get_real(infile,0);
		352	break; /* height y-range no pixels ! */
		353	case 4:double_data[4] = get_real(infile,0) - angle ;break; /* start angle in degrees */
		354	case 5:double_data[5] = get_real(infile,0) - angle;break; /* end angle in degrees */
11806	schaersvoo	355	case 6:stroke_color = get_color(infile,1);/* name or hex color */
		356	/* in Shape library:
		357	x[0] = x[1] = xc = double_data[0]
		358	y[0] = y[1] = yc = double_data[1]
		359	w[0] = width = double_data[2]
		360	w[1] = height = double_data[3]
		361	h[0] = start_angle = double_data[4]
		362	h[1] = end_angle = double_data[5]
		363	*/
15111	schaersvoo	364	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	365	decimals = find_number_of_digits(precision);
15111	schaersvoo	366	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,12,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		367	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		368	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,12,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		369	add_to_buffer(tmp_buffer);reset();
		370	dragstuff[12] = 1;
		371	if(onclick != 0){object_cnt++;}
		372	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	373	break;
		374	}
		375	}
7614	schaersvoo	376	break;
15690	schaersvoo	377	case ARCARROW:
		378	/*
		379	@ arrowarc xc,yc,x-width,y-height,start_angle,end_angle,color,type
15715	schaersvoo	380	@ alternative: arcarrow
15690	schaersvoo	381	@ uses same syntax as <a href='#arc'>arc</a>
17351	bpr	382	@ for arrow hat: type = 1 : right<br>type = 2 : left<br>type = 3 : left&right
15690	schaersvoo	383	@ if the default arrow hat/head is not satisfactory , the size of the arrow may be set with command <a href='#arrowhead'>arrowhead</a>
		384	@ no other arrow types are implemented...yet
		385	@ may be set draggable or onclick
		386	@ attention: when width ad height are very different, the arrow hat is not drawn correctly. This is a flaw and not a feature...(for now: too much calculations to correct)
		387	@%arcarrow%size 400,400%xrange -10,10%yrange -10,10%noreset%onclick%arcarrow 0,0,7,7,50,275,blue,3%arcarrow 0,0,8,8,50,275,red,2%arcarrow 0,0,9,9,50,275,green,1
		388	*/
		389	for(i=0;i<8;i++){
		390	switch(i){
		391	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
		392	case 1:double_data[1] = get_real(infile,0);
		393	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		394	if(use_affine == TRUE ){ transform(4,2);}
		395	break; /* y-values */
		396	case 2:double_data[2] = get_real(infile,0);break; /* width x-range no pixels ! */
		397	case 3:double_data[3] = get_real(infile,0);
		398	break; /* height y-range no pixels ! */
		399	case 4:double_data[4] = get_real(infile,0) - angle ;break; /* start angle in degrees */
		400	case 5:double_data[5] = get_real(infile,0) - angle;break; /* end angle in degrees */
		401	case 6:stroke_color = get_color(infile,0);/* name or hex color */
		402	break;
		403	case 7:int_data[0] = (int) get_real(infile,1);
		404	switch(int_data[0]){
		405	case 1: int_data[1] = 24;break; /* right */
		406	case 2: int_data[1] = 25;break; /* left */
		407	case 3: int_data[1] = 26;break; /* left&right */
		408	default:int_data[1] = 24;break;
		409	}
		410	if(int_data[0] == 1 ){int_data[1] = 24;}
		411	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		412	decimals = find_number_of_digits(precision);
		413	string_length = 1 + snprintf(NULL,0,"var arrow_head = %d;dragstuff.addShape(new Shape(%d,%d,%d,%d,%d,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",arrow_head,drag_type,object_cnt,onclick,use_snap,int_data[1],decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		414	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		415	snprintf(tmp_buffer,string_length,"var arrow_head = %d;dragstuff.addShape(new Shape(%d,%d,%d,%d,%d,[%.f,%.f],[%.f,%.f],[%.f,%.f],[%.f,%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",arrow_head,drag_type,object_cnt,onclick,use_snap,int_data[1],decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		416	add_to_buffer(tmp_buffer);
		417	dragstuff[int_data[1]] = 1;
		418	if(onclick != 0){object_cnt++;}
		419	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		420	js_function[JS_ARROWHEAD] = 1;
		421	reset();
		422	}
		423	}
		424	break;
11806	schaersvoo	425	case ARROW:
7614	schaersvoo	426	/*
11806	schaersvoo	427	@ arrow x1,y1,x2,y2,h,color
15715	schaersvoo	428	@ alternative: vector
17351	bpr	429	@ draw a single headed arrow / vector from (x1:y1) to (x2:y2)<br>with arrowhead size h in px and in color ''color``
14077	bpr	430	@ use command <code>linewidth int</code> to adjust thickness of the arrow
9406	schaersvoo	431	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
13957	schaersvoo	432	@%arrow_drag%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 2%drag xy%arrow 0,0,4,3,8,blue%drag xy%arrow 0,0,-4,3,8,green%drag xy%arrow 0,0,4,-3,8,orange%drag xy%arrow 0,0,-4,-3,8,cyan
		433	@%arrow_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%%onclick%arrow 0,0,4,4,8,blue%onclick%arrow 0,0,-4,5,8,green%onclick%arrow 0,0,4,-6,8,orange%onclick%arrow 0,0,-4,-2,8,cyan
7614	schaersvoo	434	*/
11806	schaersvoo	435	for(i=0;i<6;i++){
7614	schaersvoo	436	switch(i){
		437	case 0: double_data[0] = get_real(infile,0);break; /* x */
		438	case 1: double_data[1] = get_real(infile,0);break; /* y */
11806	schaersvoo	439	case 2: double_data[2] = get_real(infile,0);break; /* x */
		440	case 3: double_data[3] = get_real(infile,0);break; /* y */
		441	case 4: arrow_head = (int) get_real(infile,0);break;/* h */
		442	case 5: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	443	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		444	if(use_affine == TRUE ){ transform(4,2);}
		445	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		446	decimals = find_number_of_digits(precision);
		447	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,8,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		448	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		449	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,8,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		450	if(onclick != 0){object_cnt++;}
		451	/* object_cnt++;*/
		452	add_to_buffer(tmp_buffer);reset();
		453	dragstuff[8] = 1;
		454	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		455	break;
11806	schaersvoo	456	}
		457	}
		458	break;
8386	schaersvoo	459
11806	schaersvoo	460	case ARROWS:
7614	schaersvoo	461	/*
11806	schaersvoo	462	@ arrows color,head (px),x1,y1,x2,y2...x_n,y_n
15715	schaersvoo	463	@ alternative: vectors
15111	schaersvoo	464	@ draw single headed arrows / vectors from (x1:y1) to (x2:y2) ... (x3:y3) to (x4:y4) etc ... in color 'color'
14071	bpr	465	@ use command <code>linewidth int</code> to adjust thickness of the arrow
11806	schaersvoo	466	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
13957	schaersvoo	467	@%arrows_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%arrows red,8,0,0,4,3,0,0,2,4,0,0,-2,4,0,0,-3,-4,0,0,3,-2%
		468	@%arrows_drag%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%arrows red,8,0,0,4,3,0,0,2,4,0,0,-2,4,0,0,-3,-4,0,0,3,-2%
14208	schaersvoo	469	@%arrows_drag_slider%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%# Click arrow(s) to activate %slider 0,2pi,300,30,angle degrees,Rotate%slider -5,5pi,300,30,x display,move in x-direction%slider -10,10*pi,300,30,y display,move in y-direction%arrows red,8,0,0,4,3,0,0,2,4,0,0,-2,4,0,0,-3,-4,0,0,3,-2%
7614	schaersvoo	470	*/
		471	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		472	fill_color = stroke_color;
11806	schaersvoo	473	arrow_head = (int) get_real(infile,0);/* h */
7614	schaersvoo	474	i=0;
		475	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	476	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
7614	schaersvoo	477	if(i%2 == 0 ){
		478	double_data[i] = get_real(infile,0); /* x */
		479	}
		480	else
		481	{
		482	double_data[i] = get_real(infile,1); /* y */
		483	}
		484	i++;
		485	}
15111	schaersvoo	486	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		487	if( use_affine == TRUE ){ transform(i-1,2);}
		488	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
7614	schaersvoo	489	decimals = find_number_of_digits(precision);
11806	schaersvoo	490	for(c = 0 ; c < i-1 ; c = c+4){
15111	schaersvoo	491	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,8,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		492	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		493	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,8,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		494	add_to_buffer(tmp_buffer);
		495	if(onclick != 0){object_cnt++;}/* object_cnt++; */
7614	schaersvoo	496	}
15111	schaersvoo	497	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		498	dragstuff[8] = 1;
7614	schaersvoo	499	reset();
		500	break;
8386	schaersvoo	501
11806	schaersvoo	502	case ARROW2:
7614	schaersvoo	503	/*
11806	schaersvoo	504	@ arrow2 x1,y1,x2,y2,h,color
17351	bpr	505	@ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br>with arrowhead size h in px and in color ''color``
14071	bpr	506	@ use command <code>arrowhead int</code> to adjust the arrow head size
		507	@ use command <code>linewidth int</code> to adjust thickness of the arrow
9406	schaersvoo	508	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	509	@%arrow2%size 400,400%xrange -10,10%yrange -10,10%drag xy%arrow2 0,0,4,3,8,blue%
7614	schaersvoo	510	*/
11806	schaersvoo	511	for(i=0;i<6;i++){
7614	schaersvoo	512	switch(i){
		513	case 0: double_data[0] = get_real(infile,0);break; /* x */
		514	case 1: double_data[1] = get_real(infile,0);break; /* y */
11806	schaersvoo	515	case 2: double_data[2] = get_real(infile,0);break; /* x */
		516	case 3: double_data[3] = get_real(infile,0);break; /* y */
		517	case 4: arrow_head = (int) get_real(infile,0);break;/* h */
		518	case 5: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	519	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		520	if( use_affine == 1 ){ transform(4,2);}
		521	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	522	decimals = find_number_of_digits(precision);
15111	schaersvoo	523	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,10,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		524	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		525	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,10,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		526	add_to_buffer(tmp_buffer);
		527	if(onclick != 0){object_cnt++;}/* object_cnt++;*/
		528	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		529	dragstuff[10] = 1;
11806	schaersvoo	530	reset();
		531	break;
		532	}
		533	}
		534	break;
8386	schaersvoo	535
11806	schaersvoo	536	case ARROWS2:
7614	schaersvoo	537	/*
11806	schaersvoo	538	@ arrows2 color,head (px),x1,y1,x2,y2...x_n,y_n
14071	bpr	539	@ draw double headed arrows / vectors from (x1:y1) to (x2:y2) ... (x3:y3) to (x4:y4) etc ... in color ''color``
		540	@ use command <code>linewidth int</code> to adjust thickness of the arrows
11806	schaersvoo	541	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
12107	schaersvoo	542	@%arrows2%size 400,400%xrange -10,10%yrange -10,10%onclick%arrows2 red,8,0,0,4,3,1,1,2,4,2,2,-2,4,3,3,-3,-4,0,0,3,-2%
7614	schaersvoo	543	*/
		544	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		545	fill_color = stroke_color;
11806	schaersvoo	546	arrow_head = (int) get_real(infile,0);/* h */
7614	schaersvoo	547	i=0;
		548	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	549	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
7614	schaersvoo	550	if(i%2 == 0 ){
		551	double_data[i] = get_real(infile,0); /* x */
		552	}
		553	else
		554	{
		555	double_data[i] = get_real(infile,1); /* y */
		556	}
		557	i++;
		558	}
15111	schaersvoo	559	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		560	if( use_affine == 1 ){ transform(i-1,2);}
		561	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		562
8224	bpr	563	decimals = find_number_of_digits(precision);
11806	schaersvoo	564	for(c = 0 ; c < i-1 ; c = c+4){
15111	schaersvoo	565	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,10,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		566	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		567	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,10,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		568	add_to_buffer(tmp_buffer);
		569	if(onclick != 0){object_cnt++;}/* object_cnt++; */
7614	schaersvoo	570	}
15111	schaersvoo	571	dragstuff[10] = 1;
		572	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	573	reset();
		574	break;
11806	schaersvoo	575	case ARROWHEAD:
9427	schaersvoo	576	/*
11806	schaersvoo	577	@ arrowhead int
		578	@ default 8 (pixels)
9427	schaersvoo	579	*/
11806	schaersvoo	580	arrow_head = (int) (get_real(infile,1));
		581	break;
		582
		583	case AUDIO:
		584	/*
		585	@ audio x,y,w,h,loop,visible,audiofile location
14066	bpr	586	@ x,y: left top corner of audio element (in xrange / yrange)
		587	@ w,y: width and height in pixels
		588	@ loop: 0 or 1 ( 1 = loop audio fragment)
		589	@ visible: 0 or 1 (1 = show controls)
11806	schaersvoo	590	@ audio format may be in .mp3 or .ogg
14066	bpr	591	@ If you are using *.mp3: be aware that FireFox will not (never) play this ! (Pattented format)
		592	@ if you are using *.ogg: be aware that Microsoft based systems not support it natively
17351	bpr	593	@ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br>the program will use both as source tag
11806	schaersvoo	594	*/
15111	schaersvoo	595	js_function[DRAW_AUDIO] = 1;
11806	schaersvoo	596	for(i=0;i<7;i++){
		597	switch(i){
		598	case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
		599	case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system -> pixel */
		600	case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
		601	case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
		602	case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
		603	case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
		604	case 6:
		605	temp = get_string(infile,1);
		606	if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
		607	if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
14208	schaersvoo	608	string_length = 1 + snprintf(NULL,0, "draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
		609	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	610	snprintf(tmp_buffer,string_length,"draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
		611	add_to_buffer(tmp_buffer);
		612	break;
		613	default:break;
9427	schaersvoo	614	}
11806	schaersvoo	615	}
		616	reset();
		617	break;
		618
		619
		620	case AXIS_NUMBERING:
		621	/*
		622	@ axisnumbering
		623	@ keyword (no arguments required)
14246	bpr	624	@ for special numbering of x-axis or y-axis see grid related commands <a href="#axis">axis</a> <a href="#xaxis">xaxis</a>, <a href="#xaxisup">xaxisup</a>, <a href="#noxaxis">noxaxis</a>, <a href="#yaxis">yaxis</a>, <a href="#yaxisup">yaxisup</a>, <a href="#noyaxis">noyaxis</a>
11806	schaersvoo	625	@ to be used before command grid (see <a href="#grid">command grid</a>)
		626	*/
11891	schaersvoo	627	use_axis_numbering++;
11806	schaersvoo	628	break;
		629	case AXIS:
		630	/*
		631	@ axis
		632	@ keyword (no arguments required)
		633	@ to be used before command grid (see <a href="#grid">command grid</a>)
		634
		635	*/
		636	use_axis = TRUE;
		637	break;
		638
		639	case BARCHART:
		640	/*
		641	@ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
14066	bpr	642	@ may <b>only</b> to be used together with command <a href='#grid'>grid</a>
		643	@ can be used together with freestyle x-axis/y-axis texts: see commands <a href='#xaxis'>xaxis</a>,<a href='#xaxisup'>xaxisup</a> and <a href='#yaxis'>yaxis</a>
		644	@ use command <a href='#legend'>legend</a> to provide an optional legend in right-top-corner
11806	schaersvoo	645	@ multiple barchart command may be used in a single script
14066	bpr	646	@ also see command <a href='#piechart'>piechart</a>
		647	@ note: your arguments are not checked by canvasdraw: use your javascript console in case of trouble...
15313	schaersvoo	648	@%barchart%size 400,400%xrange -1,10%yrange -2,14%legend legend Z:legend A:this is B:C:D:E:F:G:H:X%legendcolors green:red:orange:lightblue:cyan:gold:purple:darkred:yellow:lightgreen%xaxis 0:Z:1:A:2:B:3:C:4:D:5:E:6:F:7:G:8:H:9:X%noyaxis%precision 1%fontfamily bold 15px Arial%grid 1,1,white%barchart 0:5.5:green:2:5.5:red:4:6.5:orange:6:8:lightblue:8:11:cyan:1:5.5:gold:3:9:purple:5:4:darkred:7:7:yellow:9:1:lightgreen%mouse red,14
11806	schaersvoo	649	*/
		650	temp = get_string(infile,1);
		651	if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
		652	fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
		653	barchart_cnt++;
		654	reset();
		655	break;
		656
		657	case BEZIER:
		658	/*
		659	@ bezier color,x_start,y_start,x_first,y_first,x_second,y_second,x_end,y_end
		660	@ draw a bezier curve between points, starting from (x_start:y_start)
		661	@ can <b>not</b> be dragged or set onclick
		662	*/
15111	schaersvoo	663	js_function[DRAW_BEZIER] = 1;
11806	schaersvoo	664	decimals = find_number_of_digits(precision);
		665	for(i = 0 ; i < 9; i++){
		666	switch(i){
		667	case 0: stroke_color = get_color(infile,0);break;
		668	case 1: double_data[0] = get_real(infile,0);break;/* start x */
		669	case 2: double_data[1] = get_real(infile,0);break;/* start y */
		670	case 3: double_data[2] = get_real(infile,0);break;/The x-coordinate of the first B�zier control point /
		671	case 4: double_data[3] = get_real(infile,0);break;/The y-coordinate of the first B�zier control point /
		672	case 5: double_data[4] = get_real(infile,0);break;/The x-coordinate of the second B�zier control point /
		673	case 6: double_data[5] = get_real(infile,0);break;/The y-coordinate of the second B�zier control point /
		674	case 7: double_data[6] = get_real(infile,0);break;/The x-coordinate of the B�zier end point /
		675	case 8: double_data[7] = get_real(infile,1);/The y-coordinate of the B�zier end point /
15111	schaersvoo	676	if(use_rotate == TRUE ){rotate(8,angle,rotationcenter,2);}
		677	if(use_affine == TRUE ){ transform(2,5);}
		678	string_length = 1 + snprintf(NULL,0,"draw_bezier(%d,%d,[%f,%f,%f,%f,%f,%f,%f,%f],\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.2f);",STATIC_CANVAS,line_width,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],double_data[6],double_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle);
14208	schaersvoo	679	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	680	snprintf(tmp_buffer,string_length,"draw_bezier(%d,%d,[%f,%f,%f,%f,%f,%f,%f,%f],\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.2f);",STATIC_CANVAS,line_width,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],double_data[6],double_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle);
11806	schaersvoo	681	add_to_buffer(tmp_buffer);
		682	break;
		683	default: break;
9427	schaersvoo	684	}
		685	}
		686	reset();
		687	break;
11806	schaersvoo	688
		689
		690	case BGCOLOR:
9427	schaersvoo	691	/*
11806	schaersvoo	692	@ bgcolor colorname or #hex
		693	@ use this color as background of the "div" containing the canvas(es)
12110	schaersvoo	694	@%bgcolor%size 400,400%xrange -10,10%yrange -10,10%bgcolor lightblue
9427	schaersvoo	695	*/
11806	schaersvoo	696	/* [255,255,255]*/
		697	bgcolor = get_string(infile,1);
		698	if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
		699	int found = 0;
		700	for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
		701	if( strcmp( colors[i].name , bgcolor ) == 0 ){
		702	bgcolor = colors[i].hex;
		703	found = 1;
		704	break;
		705	}
9427	schaersvoo	706	}
14066	bpr	707	if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list: use hexcolor...something like #a0ffc4");}
11806	schaersvoo	708	}
13970	obado	709	fprintf(js_include_file,"/* set background color of canvas div */\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
11806	schaersvoo	710	break;
		711
		712	case BGIMAGE:
		713	/*
		714	@ bgimage image_location
14071	bpr	715	@ use an image as background; technical: we use the background of ''canvas_div``
11806	schaersvoo	716	@ the background image will be resized to match "width = xsize" and "height = ysize"
12110	schaersvoo	717	@%bgimage%size 400,400%xrange -10,10%yrange -10,10%bgimage https://wims.unice.fr/wims/gifs/en.gif
11806	schaersvoo	718	*/
		719	URL = get_string(infile,1);
13970	obado	720	fprintf(js_include_file,"/* set background image to canvas div */\ncanvas_div.style.backgroundImage = \"url(%s)\";canvas_div.style.backgroundSize = \"%dpx %dpx\";\n",URL,xsize,ysize);
11806	schaersvoo	721	break;
		722
		723	case BLINK:
		724	/*
		725	@ blink time(seconds)
		726	@ NOT IMPLEMETED -YET
		727	*/
		728	break;
		729
		730	case BOXPLOT:
		731	/*
		732	@ boxplot x_or_y,box-height_or_box-width,position,min,Q1,median,Q3,max
17351	bpr	733	@ example:<br><code>xrange 0,300<br>yrange 0,10<br>boxplot x,4,8,120,160,170,220,245</code><br>meaning: create a boxplot in x-direction, with height 4 (in yrange) and centered around line y=8
		734	@ example:<br><code>xrange 0,10<br>yrange 0,300<br>boxplot y,4,8,120,160,170,220,245</code><br>meaning: create a boxplot in y-direction, with width 4 (in xrange) and centered around line x=8
		735	@ use command <a href='#filled'>filled</a> to fill the box<br><b>note:</b> the strokecolor is used for filling Q1, the fillcolor is used for filling Q3
14066	bpr	736	@ use command <a href='#fillpattern'>fillpattern some_pattern</a> to use a (diamond for Q1, hatch for Q3) pattern.
		737	@ use command <a href='#opacity'>opacity</a> to adjust fill_opacity of stroke and fill colours
17351	bpr	738	@ use command <a href='#legend'>legend</a> to automatically create a legend <br>unicode allowed in legend<br>use command <a href='#fontfamily'>fontfamily</a> to set the font of the legend.
11806	schaersvoo	739	@ there is no limit to the number of boxplots used.
14078	bpr	740	@ can <b>not</b> be set draggable and <a href='#onclick'>onclick</a> is not ready yet
14066	bpr	741	@ use keyword <a href="#userboxplot">userboxplot</a> before command boxplot, if a pupil must draw a boxplot (using his own min,Q1,median,Q3,max data)
		742	@ use keyword <a href="#userboxplotdata">userboxplotdata</a> before command boxplot, if a pupil must generate the data by some means.
		743	@ use command <a href="#boxplotdata">boxplotdata</a> when the boxplot should be drawn from wims-generated raw statistical date
12110	schaersvoo	744	@%boxplot_1%size 400,400%xrange 0,300%yrange 0,10%opacity 120,50%filled%fillcolor orange%strokecolor blue%linewidth 2%boxplot x,4,8,120,160,170,220,245
		745	@%boxplot_2%size 400,400%xrange 0,10%yrange 0,300%opacity 120,50%filled%fillcolor orange%strokecolor blue%linewidth 2%boxplot y,4,8,120,160,170,220,245
13958	schaersvoo	746	@%boxplot_3%size 400,400%xrange 0,100%yrange 0,10%fillpattern hatch%linewidth 3%fillcolor red%strokecolor green%boxplot x,1,2,4,14,27,39,66%strokecolor blue%boxplot x,1,4,15,45,50,66,87%strokecolor red%boxplot x,1,6,45,70,80,90,100%strokecolor orange%boxplot x,1,8,28,38,48,56,77%mouse red,16
11806	schaersvoo	747	*/
15111	schaersvoo	748	js_function[DRAW_BOXPLOT] = 1;
11806	schaersvoo	749	for(i=0;i<8;i++){
		750	switch(i){
		751	case 0: temp = get_string_argument(infile,0);
		752	if( strstr(temp,"x") != 0){int_data[0] = 1;}else{int_data[0] = 0;} break; /* x or y */
		753	case 1: double_data[0] = get_real(infile,0);break;/* height \| width */
		754	case 2:
		755	if( js_function[DRAW_JSBOXPLOT] == 0 ){
		756	double_data[1] = get_real(infile,0);
		757	fprintf(js_include_file,"var boxplot_source = 0;\n");/* we use given min,Q1,median,Q3,max */
		758	}
		759	else
		760	{
		761	double_data[1] = get_real(infile,1);
		762	double_data[2] = 1;
		763	double_data[3] = 1;
		764	double_data[4] = 1;
		765	double_data[5] = 1;
		766	double_data[6] = 1;
		767	double_data[7] = 1;
		768	i=8;
		769	}
		770	break;/* center value x or y */
		771	case 3: double_data[2] = get_real(infile,0); break;/* min */
		772	case 4: double_data[3] = get_real(infile,0); break;/* Q1 */
		773	case 5: double_data[4] = get_real(infile,0); break;/* median */
		774	case 6: double_data[5] = get_real(infile,0); break;/* Q3 */
		775	case 7: double_data[6] = get_real(infile,1); break;/* max */
		776	default:break;
9427	schaersvoo	777	}
		778	}
		779	decimals = find_number_of_digits(precision);
11806	schaersvoo	780	/function draw_boxplot(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1)/
14208	schaersvoo	781	string_length = 1 + snprintf(NULL,0, "draw_boxplot(%d,%d,%.f,%.f,[%.f,%.f,%.f,%.f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d);\n",BOXPLOT_CANVAS+boxplot_cnt,int_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],decimals,double_data[6],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1]);
11806	schaersvoo	782	check_string_length(string_length);
14208	schaersvoo	783	tmp_buffer = my_newmem(string_length);
11806	schaersvoo	784	snprintf(tmp_buffer,string_length, "draw_boxplot(%d,%d,%.f,%.f,[%.f,%.f,%.f,%.f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d);\n",BOXPLOT_CANVAS+boxplot_cnt,int_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],decimals,double_data[5],decimals,double_data[6],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1]);
		785	add_to_buffer(tmp_buffer);
		786	boxplot_cnt++;
		787	reset();
		788	break;
		789	case BOXPLOTDATA:
		790	/*
		791	@ boxplotdata some_data
15111	schaersvoo	792	@ 'some_data' are a list of numbers separated by a comma "," (items)
14071	bpr	793	@ only be used before command <code>boxplot</code>: the command <a href="#boxplot">boxplot</a> will provide the boxplot drawing of the data.
17351	bpr	794	@ xrange 0,100<br>yrange 0,10<br>boxplotdata 11,22,13,15,23,43,12,12,14,2,45,32,44,13,21,24,13,19,35,21,24,23<br>boxplot x,4,5
11806	schaersvoo	795	@ note: wims will not check your data input \| format. use js-error console to debug any problems.
14071	bpr	796	@ a javascript function <code>statistics()</code> will parse the data and calculate the values [min,Q1,median,Q3,max] and hand them to the boxplot draw function.
		797	@ only a single call to <code>boxplotdata</code> can be made. If multiple boxplots should be present in a single canvas, then use multiple calls to command <a href='#boxplot'>boxplot</a>
13959	bpr	798	@%boxplotdata%size 400,400%xrange 0,100%yrange 0,10%strokecolor orange%fillpattern hatch%linewidth 3%strokecolor green%boxplotdata 11,22,13,15,23,43,12,12,14,2,45,32,44,13,21,24,13,19,35,21,24,23%boxplot x,2,2%mouse red,16
11806	schaersvoo	799	*/
15111	schaersvoo	800	js_function[DRAW_JSBOXPLOT] = 1;
		801	js_function[DRAW_BOXPLOT] = 1;
11806	schaersvoo	802	fprintf(js_include_file,"var boxplot_source = 1;var jsboxplot_data = [%s];\n",get_string(infile,1));
		803
		804	break;
		805
		806	case CANVASTYPE:
		807	canvas_type = (int) (get_real(infile,1));
		808	/*
		809	@ canvastype TYPE
17351	bpr	810	@ for now only useful before commands filltoborder / floodfill / clickfill etc operations<br>Only the images of this TYPE will be scanned and filled
11806	schaersvoo	811	@ default value of TYPE is DRAG_CANVAS e.g. 5 (all clickable / draggable object are in this canvas)
		812	@ use another TYPE, if you know what you are doing...
15309	schaersvoo	813	@ other possible canvasses (e.g. transparent PNG pictures, xsize × ysize on top of each other)<ul><li> EXTERNAL_IMAGE_CANVAS 0</li><li> BG_CANVAS 1</li><li> STATIC_CANVAS 2</li><li> MOUSE_CANVAS 3</li><li> GRID_CANVAS 4</li><li> DRAG_CANVAS 5</li><li> DRAW_CANVAS 6</li><li> TEXT_CANVAS 7</li><li> CLOCK_CANVAS 8</li><li> ANIMATE_CANVAS 9</li><li> TRACE_CANVAS 10</li><li>BOXPLOT_CANVAS 11</li><li> JSPLOT_CANVAS 100, will increase with every call</li><li> FILL_CANVAS 200, will increase with every call</li><li> USERDRAW_JSPLOT 300, will increase with every call</li><li>CLICKFILL_CANVAS 400, will increase with every call/click</li><li>BOXPLOT_CANVAS 500, will increase with every call</li></ul>
11806	schaersvoo	814	*/
		815	break;
		816
15111	schaersvoo	817	case CENTERED:
		818	use_offset = 4;
		819	/*
		820	@ centered
		821	@ keyword ; to place the text centered (in width and height) on the text coordinates(x:y)
		822	@ may be used for text exactly centered on its (x;y)
		823	@ use <a href="#fontfamily">fontfamily</a> for setting the font
		824	@ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the ''drag/drop/onclick-library``)
15313	schaersvoo	825	@%centered%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Arial%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
15111	schaersvoo	826	*/
		827	break;
		828
11806	schaersvoo	829	case CENTERSTRING:
		830	/*
		831	@ centerstring color,y-value,the text string
		832	@ title color,y-value,the text string
		833	@ draw a string centered on the canvas at y = y-value
14071	bpr	834	@ can not be set ''onclick`` or ''drag xy`` (...)
14162	bpr	835	@ unicode supported: <code>centerstring red,5,\\u2232</code>
15313	schaersvoo	836	@ use a command like <code>fontfamily italic 24pt Arial</code> to set fonts on browser that support font change
12110	schaersvoo	837	@%centerstring%size 400,400%xrange -10,10%yrange -10,10%bgcolor lightblue%fontfamily italic 22pt Courier%centerstring blue,7,the center
11806	schaersvoo	838	*/
15111	schaersvoo	839	js_function[DRAW_CENTERSTRING] = 1;
11806	schaersvoo	840	for(i=0;i<3;i++){
		841	switch(i){
		842	case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
		843	case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
		844	case 2: temp = get_string_argument(infile,1);
		845	/* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
		846	decimals = find_number_of_digits(precision);
15111	schaersvoo	847	string_length = 1 + snprintf(NULL,0,"draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
14208	schaersvoo	848	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	849	snprintf(tmp_buffer,string_length,"draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
		850	add_to_buffer(tmp_buffer);
		851	break;
		852	default:break;
		853	}
9427	schaersvoo	854	}
		855	break;
15111	schaersvoo	856	case CHEMTEX:
		857	/*
15116	bpr	858	chemtex
		859	keyword...needs to be the first command in the script (even before the ''size`` command)
		860	only for KaTeX enabled typesetting !
		861	will include 80kB large js-library for chemisty typesetting
		862	using <a href="http://85.148.206.56/wims/download/katex.for.wims.tar.gz">KaTeX</a> : <code>katex x,y,\\ce{ chemistry tex code} like : \\ce{ Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2- }</code>
		863	using MathJaX : <code>latex x,y,\\ce{ chemistry tex code} like : \\ce{ Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2- }</code>
		864	see https://mhchem.github.io/MathJax-mhchem/
15313	schaersvoo	865	%chemtex_katex_mathjax%chemtex%size 400,400%xrange -10,10%yrange -10,10%snaptogrid%fontfamily 22px Arial%strokecolor red%drag xy%centered%latex 0,8,\\ce{Hg^2+}%drag xy%centered%latex 0,4,\\ce{\\xrightarrow{\\text{I}^{-}}}%drag xy%centered%latex 0,0,\\ce{HgI2}%centered%drag xy%latex 0,-4,\\ce{\\xrightarrow{\\text{I}^{-}}}%drag xy%centered%latex 0,-8,\\ce{[Hg^{II}I4]^2-}
15111	schaersvoo	866	*/
		867	found_size_command = 1;
		868	fprintf(stdout,"\n<script src=\"scripts/js/KaTeX/mhchem.js\" defer></script>\n");
		869	break;
8386	schaersvoo	870
		871	case CIRCLE:
8299	schaersvoo	872	/*
8386	schaersvoo	873	@ circle xc,yc,width (2*r in pixels),color
15111	schaersvoo	874	@ use command <code>fcircle xc,yc,d,color</code>
15715	schaersvoo	875	@ alternative: disk
15111	schaersvoo	876	@ use command <code>fillcolor color</code> to set the fillcolor
14071	bpr	877	@ may be set <a href='#drag'>draggable</a> / <a href='#onclick'>onclick</a>
15111	schaersvoo	878	@ will shrink / expand on zoom out / zoom in
12110	schaersvoo	879	@%circle%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%drag xy%circle 0,0,60,red%zoom red
8299	schaersvoo	880	*/
8386	schaersvoo	881	for(i=0;i<4;i++){
		882	switch(i){
		883	case 0: double_data[0] = get_real(infile,0);break; /* x */
		884	case 1: double_data[1] = get_real(infile,0);break; /* y */
14066	bpr	885	case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out: radius in 'dx' xrange*/
8386	schaersvoo	886	case 3: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	887	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		888	if(use_affine == TRUE ){ transform(2,2);}
		889	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8386	schaersvoo	890	decimals = find_number_of_digits(precision);
15111	schaersvoo	891	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,13,[%.f],[%.f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],double_data[2],double_data[2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		892	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		893	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,13,[%.f],[%.f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],double_data[2],double_data[2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		894	add_to_buffer(tmp_buffer);
		895	if(onclick != 0){object_cnt++;}/* object_cnt++;*/
		896	dragstuff[13] = 1;
		897	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8386	schaersvoo	898	reset();
		899	break;
		900	default : break;
		901	}
		902	}
		903	break;
		904
		905	case CIRCLES:
		906	/*
		907	@ circles color,xc1,yc1,r1,xc2,yc2,r2...xc_n,yc_n,r_n
9383	schaersvoo	908	@ <b>attention</b> r = radius in x-range (!)
14071	bpr	909	@ use keyword <code>filled</code> or command <code>fcircles</code> to produce solid circles
15715	schaersvoo	910	@ alternative: disks
14071	bpr	911	@ use command <code>fillcolor color</code> to set the fillcolor
		912	@ may be set <a href='#drag'>draggable</a> / <a href='#onclick'>onclick</a> (individually)
8386	schaersvoo	913	@ will shrink / expand on zoom out / zoom in
14208	schaersvoo	914	@%circles_drag%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%drag xy%circles blue,0,0,2,2,2,3,-3,-3,3,3,3,4,3,-4,2%zoom red
		915	@%circles_onclick%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%onclick%circles blue,0,0,2,2,2,3,-3,-3,3,3,3,4,3,-4,2%zoom red
		916	@%circles_drag_slider%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%# Click circles(s) to activate%opacity 200,50%fillcolor orange%rotationcenter 2,3%slider 0,2pi,300,30,angle degrees,Rotate%slider -5,5pi,300,30,x display,move in x-direction%slider -10,10*pi,300,30,y display,move in y-direction%fcircles blue,0,0,0.5,2,2,1,-3,-3,1.5,3,3,0.5,3,-4,0.5
8386	schaersvoo	917	*/
8299	schaersvoo	918	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		919	fill_color = stroke_color;
8386	schaersvoo	920	i=1;
8299	schaersvoo	921	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	922	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8386	schaersvoo	923	switch (i%3){
		924	case 1:double_data[i-1] = get_real(infile,0);break; /* x */
		925	case 2:double_data[i-1] = get_real(infile,0);break; /* y */
		926	case 0:double_data[i-1] = get_real(infile,1);break; /* r */
8299	schaersvoo	927	}
		928	i++;
		929	}
15111	schaersvoo	930	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,3);}
		931	if(use_affine == TRUE ){ transform(i-1,3);}
		932	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		933
8299	schaersvoo	934	decimals = find_number_of_digits(precision);
8386	schaersvoo	935	for(c = 0 ; c < i-1 ; c = c+3){
15111	schaersvoo	936	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,13,[%.f],[%.f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[c+2],double_data[c+2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		937	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		938	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,13,[%.f],[%.f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[c+2],double_data[c+2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		939	add_to_buffer(tmp_buffer);
		940	if(onclick != 0){object_cnt++;}/* object_cnt++; */
8299	schaersvoo	941	}
		942	reset();
15111	schaersvoo	943	dragstuff[13] = 1;
		944	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8299	schaersvoo	945	break;
11806	schaersvoo	946	case CLEARBUTTON:
		947	/*
		948	@ clearbutton value
15715	schaersvoo	949	@ alternative: delete
		950	@ alternative: erase
15111	schaersvoo	951	@ adds a button to clear the <a href="#userdraw">userdraw</a> canvas with text ''value``
		952	@ <b>attention</b> command <code>clearbutton</code> is incompatible with <a href="#multidraw">multidraw</a> based drawings<br/>(in <code>multidraw</code> there is always a remove_object_button for every draw primitive)
17351	bpr	953	@ normally <a href="#userdraw">userdraw</a> primitives have the option to use middle/right mouse button on<br> a point of the object to remove this specific object...this clear button will remove all drawings
14071	bpr	954	@ uses the tooltip placeholder div element: may not be used with command <code>intooltip</code>
15111	schaersvoo	955	@ use command <a href="#css">css</a> to style the button...
17351	bpr	956	@ the clearbutton will have id="canvas_scripts[%d]" ; starting with %d=0 for the first script<br>to change the style of all ''clearbutton`` of all included canvasdraw scripts, use something like<br><code>if(document.getElementById("clearbutton"+canvas_scripts[0])){<br> var p = 0;<br> while(document.getElementById("clearbutton"+canvas_scripts[p])){<br>  document.getElementById("clearbutton"+canvas_scripts[p]).className="some_class_name";<br>  <!−−</code> or <code>document.getElementById("clearbutton"+canvas_scripts[p]).setAttribute("style","some_style"); −−><br>  p++;<br> };<br>};</code>
13935	bpr	957	@%clearbutton%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 255,50%userdraw circles,red%clearbutton Remove All
11806	schaersvoo	958	*/
		959	if(reply_format == 29){/* eg multidraw is selected */
14054	schaersvoo	960	// canvas_error("command clearbutton incompatible with multidraw...only suitable for userdraw");
11806	schaersvoo	961	}
15111	schaersvoo	962	add_clear_button(css_class,get_string(infile,1));
11806	schaersvoo	963	break;
8386	schaersvoo	964
11806	schaersvoo	965	case CLOCK:
7614	schaersvoo	966	/*
11806	schaersvoo	967	@ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
14071	bpr	968	@ use command <code>opacity stroke-opacity,fill-opacity</code> to adjust foreground (stroke) and background (fill) transparency
17351	bpr	969	@ type hourglass:<br>type = 0: only segments<br>type = 1: only numbers<br>type = 2: numbers and segments
		970	@ colors are optional: if not defined, default values will be used<br>default colours: clock 0,0,60,4,35,45,1,2<br>custom colours: clock 0,0,60,4,35,45,1,2,,,,yellow,red<br>custom colours: clock 0,0,60,4,35,45,1,2,white,green,blue,black,yellow
11806	schaersvoo	971	@ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
17351	bpr	972	@ interactive <ul><li>0: not interactive, just clock(s)</li><li>1: function read_canvas() will read all active clocks in H:M:S format<br>The active clock(s) can be adjusted by pupils</li><li>2: function read_canvas() will return the clicked clock <br>(like multiplechoice; first clock in script in nr. 0 )</li><li>3: no prefab buttons...create your own buttons (or other means) to make the clock(s) adjustable by javascript function set_clock(num,type,diff)<br>wherein: num = clock id (starts with 0) ; type = 1 (hours) ; type = 2 (minutes) ; type = 3 (seconds) <br>and diff = the increment of 'type' (positive or negative)</li></ul>
11806	schaersvoo	973	@ canvasdraw will not check validity of colornames...the javascript console is your best friend
		974	@ no combinations with other reply_types allowed, for now
17351	bpr	975	@ if interactive is set to ''1``, 6 buttons per clock will be displayed for adjusting a clock (H+ M+ S+ H- M- S-)<br> set_clock(clock_id,type,incr) <br>first clock has clock_id=0 ; type: H=1,M=2,S=3 ; incr: increment integer
		976	@ note: if you need multiple -interactive- clocks on a webpage, use multiple ''clock`` commands in a single script !<br>and <i>not multiple canvas scripts</i> in a single page
14066	bpr	977	@ note: clocks will not zoom or pan, when using command <a href='#zoom'>zoom</a>
12110	schaersvoo	978	@%clock_1%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,0,0,red,green,blue,lightgrey,black
		979	@%clock_2%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,1,1,red,green,blue,lightgrey,black
		980	@%clock_3%size 400,400%xrange -10,10%yrange -10,10%clock -5,0,80,4,35,45,2,2,red,green,blue,lightgrey,black%clock 5,0,80,3,15,65,2,2,red,green,blue,lightgrey,black
		981	@%clock_4%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,0,0,red,green,blue,lightgrey,black
		982	@%clock_5%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,1,1,red,green,blue,lightgrey,black
		983	@%clock_6%size 400,400%xrange -10,10%yrange -10,10%clock -5,0,80,4,35,45,2,2,red,green,blue,lightgrey,black%clock 5,0,80,8,55,15,2,2,red,green,blue,lightgrey,black
		984	@%clock_7%size 400,400%xrange -10,10%yrange -10,10%clock 0,0,120,4,35,45,2,0,red,green,blue,lightgrey,black
7614	schaersvoo	985	*/
15111	schaersvoo	986	js_function[DRAW_CLOCK] = 1;
		987	js_function[INTERACTIVE] = 1;
11806	schaersvoo	988
		989	/* var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
		990	for(i=0;i<9;i++){
		991	switch(i){
		992	case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
		993	case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
		994	case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
		995	case 3: int_data[3] = get_real(infile,0);break;/* hours */
		996	case 4: int_data[4] = get_real(infile,0);break;/* minutes */
		997	case 5: int_data[5] = get_real(infile,0);break;/* seconds */
		998	case 6: int_data[6] = get_real(infile,0);if(int_data[6] < 0 \|\| int_data[6] > 2){canvas_error("hourglass can be 0,1 or 2");}break;/* type hourglass */
		999	case 7: int_data[7] = (int)(get_real(infile,1));/* interactive 0,1,2*/
		1000	switch(int_data[7]){
		1001	case 0:break;
		1002	case 1:if(clock_cnt == 0){
		1003	if( reply_format == 0 ){
		1004	reply_format = 18; /* user sets clock */
14208	schaersvoo	1005	/* string_length = 1 + snprintf(NULL,0,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
		1006	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	1007	snprintf(tmp_buffer,string_length,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
		1008	add_to_buffer(tmp_buffer);
		1009	*/
		1010	fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
		1011	}
		1012	else
		1013	{
		1014	canvas_error("interactive clock may not be used together with other reply_types...");
		1015	}
		1016	}
17351	bpr	1017	fprintf(stdout,"<p style=\"text-align:center\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\"><br><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H−\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M−\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S−\"></p>",css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt);
11806	schaersvoo	1018	break;
		1019	case 3:if(clock_cnt == 0){
		1020	if( reply_format == 0 ){
		1021	reply_format = 18; /* user sets clock */
		1022	fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,1,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
		1023	}
		1024	else
		1025	{
		1026	canvas_error("interactive clock may not be used together with other reply_types...");
		1027	}
		1028	}
		1029	/*
17351	bpr	1030	fprintf(stdout,"<p style=\"text-align:center\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\"><br><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H−\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M−\"><input class=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S−\"></p>",css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt,css_class,clock_cnt);
11806	schaersvoo	1031	*/
		1032	break;
		1033	case 2:if( reply_format == 0 ){
		1034	reply_format = 19; /* "onclick */
15111	schaersvoo	1035	js_function[INTERACTIVE] = 1;
		1036	fprintf(js_include_file,"\n/* begin onclick handler for clocks */\nvar reply = new Array();canvas_div.addEventListener( 'mousedown', user_click,false);\n\nfunction user_click(evt){if(evt.button == 1){var canvas_rect = clock_canvas.getBoundingClientRect();var x = evt.clientX - canvas_rect.left;var y = evt.clientY - canvas_rect.top;var p = 0;var name;var t = true;while(t){try{name = eval('clocks'+p);if( x < name.xc + name.radius && x > name.xc - name.radius ){if( y < name.yc + name.radius && y > name.yc - name.radius ){reply[0] = p;name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,\"lightblue\",name.fg_color);};}else{clock_ctx.clearRect(name.xc-name.radius,name.yc-name.radius,name.xc+name.radius,name.yc+name.radius);name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};p++;}catch(e){t=false;};};};};\n");
11806	schaersvoo	1037	}
		1038	else
		1039	{
		1040	if( reply_format != 19){
		1041	canvas_error("clickable clock(s) may not be used together with other reply_types...");
		1042	}
		1043	}
		1044	break;
		1045	default: canvas_error("interactive must be set 0,1 or 2");break;
		1046	}
		1047	break;
		1048	case 8:
14078	bpr	1049	if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock(), for now it's OK */
11806	schaersvoo	1050	fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
		1051	}
		1052	temp = get_string(infile,3);/* optional colors, like: ,,red,,blue*/
		1053	if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
		1054	else{
		1055	/* h_color,m_color,s_color,bg_color,fg_color */
11991	schaersvoo	1056	temp = ",black\",\"black\",\"black\",\"white\",\"black";}
14208	schaersvoo	1057	string_length = 1 + snprintf(NULL,0,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
		1058	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	1059	snprintf(tmp_buffer,string_length,"clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
		1060	add_to_buffer(tmp_buffer);
		1061	fprintf(js_include_file,"var clocks%d;",clock_cnt);
		1062	clock_cnt++;
		1063	break;
		1064	default:break;
		1065	}
		1066	}
		1067	break;
		1068
		1069
		1070	case COLORPALETTE:
		1071	/*
		1072	@ colorpalette color_name_1,color_name_2,...,color_name_8
		1073	@ opacity will be the same for all colors and is set by command <a href="#opacity">opacity [0-255],[0-255]</a>
17351	bpr	1074	@ can be used with command <a href='#userdraw'>userdraw clickfill,color</a> when more than one fillcolor is wanted.<br>in that case use for example <a href='#replyformat'>replyformat 10</a> ... reply=x1:y1:color1,x2:y2:color2...<br>the pupil can choose from the given colors by clicking small coloured buttons.<br> the click coordinates and corresponding fillcolor will be stored in read_canvas()...when using the appropriate replyformat.<br>the first color of the palette is color=0
14077	bpr	1075	@ make sure to include the ''remove button`` by using command <a href='#clearbutton'>clearbutton some_text</a>
11806	schaersvoo	1076	*/
		1077	if( use_tooltip == 1 ){canvas_error("command 'colorpalette' is incompatible with command 'intooltip tip_text'");}
		1078	fprintf(js_include_file,"var multifillcolors = [];var palettecolors = [");
		1079	while( ! done ){
		1080	temp = get_color(infile,1);
		1081	fprintf(js_include_file,"\"%s\",",temp);
		1082	}
		1083	fprintf(js_include_file,"];");/* add black to avoid trouble with dangling comma... */
15111	schaersvoo	1084	add_color_palette(css_class);
11806	schaersvoo	1085	break;
13829	bpr	1086
15111	schaersvoo	1087	case COMMENT:
		1088	sync_input(infile);
		1089	break;
		1090
		1091
11806	schaersvoo	1092	case COPY:
		1093	/*
		1094	@ copy x,y,x1,y1,x2,y2,[filename URL]
		1095	@ The image may be "bitmap" or "SVG"
		1096	@ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
		1097	@ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
		1098	@ [filename] is the URL of the image
15111	schaersvoo	1099	@ <em>TODO:move special image functions to generic 'dragstuff' library</em>
		1100	@ URL is normal URL of network reachable image file location
17351	bpr	1101	@ if command <a href="#drag">drag x/y/xy</a> is set before command ''copy``, the images will be draggable<br>javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br>the command drag is only valid for the next image<br>draggable / non-draggable images may be mixed<br>may be used together with preceding keywords ''snaptogrid``, ''xsnaptogrid``, ''ysnaptogrid`` or <code>snaptopoints x1,y1,x2,y2...</code>.
		1102	@ if keyword <a href="#onclick">onclick</a> is set before command ''copy`` the image(s) is clickable (marked with a green rectangle around the image)<br>use 'read_dragdrop' to get the number of the clicked image(s)<br>use command 'clearbutton some_text' to reset the reply/click array.<br>example: 4 images; student clicked on image 2 and 3: reply = 0,1,1,0<br>after clicking the clear button: reply = 0,0,0,0<br>May be mixed with commands ''drag x\|y\|xy`` (use javascript read_canvas to get the new coordinates
15111	schaersvoo	1103	@ ''onclick`` for external images may be mixed with canvas generated stuff (like lines,curves, embeded XML etc)
11806	schaersvoo	1104	@ you may draw / userdraw / drag other stuff on top of an "imported" image
15633	bpr	1105	@ the use of a slider is not possible: if needed, use command <a href='#html'>html x,y,<img src=my_image.svg /> </a>
14077	bpr	1106	@ use keyword <a href='#centered'>centered</a> before command ''copy`` to place image center at given coordinates.
13967	schaersvoo	1107	@%copy_onclick%size 400,400%xrange -10,10%yrange -10,10%onclick%copy -5,5,-1,-1,-1,-1,gifs/fr.gif%onclick%copy 5,5,-1,-1,-1,-1,gifs/en.gif%onclick%copy 5,-5,-1,-1,-1,-1,gifs/it.gif%onclick%copy -5,-5,-1,-1,-1,-1,gifs/cn.gif
14066	bpr	1108	@%copy_drag_xy%size 400,400%xrange -10,10%yrange -10,10%# attention: left mouse click on the image will activate dragging...%# keep left mouse button pressed while moving the image !%drag xy%copy -5,5,-1,-1,-1,-1,gifs/fr.gif%drag xy%copy 5,5,-1,-1,-1,-1,gifs/en.gif%drag xy%copy 5,-5,-1,-1,-1,-1,gifs/it.gif%drag xy%copy -5,-5,-1,-1,-1,-1,gifs/cn.gif
		1109	@%copy_drag_xy_snaptogrid%size 400,400%xrange -10,10%yrange -10,10%grid 2,2,grey%# attention: left mouse click on the image will activate dragging...%# keep left mouse button pressed while moving the image !%drag xy%# a function read_canvas_images() %copy -6,6,-1,-1,-1,-1,gifs/fr.gif%snaptogrid%drag xy%copy 6,6,-1,-1,-1,-1,gifs/en.gif%snaptogrid%drag xy%copy 6,-6,-1,-1,-1,-1,gifs/it.gif%snaptogrid%drag xy%copy -6,-6,-1,-1,-1,-1,gifs/cn.gif
11806	schaersvoo	1110	*/
		1111	for(i = 0 ; i<7;i++){
7614	schaersvoo	1112	switch(i){
15111	schaersvoo	1113	case 0: double_data[0]=get_real(infile,0);break; /* x left top corner in x/y range */
		1114	case 1: double_data[1]=get_real(infile,0);break; /* y left top corner in x/y range */
11806	schaersvoo	1115	case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
		1116	case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
		1117	case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width */
		1118	case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
		1119	case 6: URL = get_string(infile,1);
15111	schaersvoo	1120	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		1121	if(use_affine == TRUE ){transform(2,2);}
		1122	int_data[0] = x2px(double_data[0]);
		1123	int_data[1] = y2px(double_data[1]);
11806	schaersvoo	1124	int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
		1125	int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
15111	schaersvoo	1126	if( onclick == 0 ){ /* no mouse needed static image copy */
		1127	if(js_function[DRAW_EXTERNAL_IMAGE] == 0){/* create canvas just once */
		1128	fprintf(js_include_file,"var image_copy_canvas = create_canvas%d(%d,xsize,ysize);",canvas_root_id,STATIC_IMAGE_CANVAS);
		1129	js_function[DRAW_EXTERNAL_IMAGE] = 1;
		1130	}
		1131	string_length = 1 + snprintf(NULL,0, "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],use_offset,int_data[10]);
		1132	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1133	snprintf(tmp_buffer,string_length, "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],use_offset,int_data[10]);
11806	schaersvoo	1134	}
15111	schaersvoo	1135	else /* onclick or drag & drop external copy images */
11806	schaersvoo	1136	{
15111	schaersvoo	1137	js_function[DRAG_EXTERNAL_IMAGE] = 1;
		1138	string_length = 1 + snprintf(NULL,0, "drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],onclick,object_cnt,use_offset,use_snap,int_data[10]);
		1139	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15116	bpr	1140	snprintf(tmp_buffer,string_length, "drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],onclick,object_cnt,use_offset,use_snap,int_data[10]);
11806	schaersvoo	1141	}
14038	schaersvoo	1142	add_to_buffer(tmp_buffer);
16847	schaersvoo	1143	object_cnt++;
11806	schaersvoo	1144	break;
7614	schaersvoo	1145	default: break;
		1146	}
		1147	}
15111	schaersvoo	1148	reset();
7614	schaersvoo	1149	break;
11806	schaersvoo	1150	/*
		1151	HTML5 specs:
		1152	context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
		1153	img Specifies the image, canvas, or video element to use
14066	bpr	1154	sx The x coordinate where to start clipping: x1 = int_data[0]
		1155	sy The y coordinate where to start clipping: x2 = int_data[1]
		1156	swidth The width of the clipped image: int_data[2] - int_data[0]
		1157	sheight The height of the clipped image: int_data[3] - int_data[1]
		1158	x The x coordinate where to place the image on the canvas: dx1 = int_data[4]
		1159	y The y coordinate where to place the image on the canvas: dy1 = int_data[5]
		1160	width The width of the image to use (stretch or reduce the image): dx2 - dx1 = int_data[6]
		1161	height The height of the image to use (stretch or reduce the image): dy2 - dy1 = int_data[7]
11806	schaersvoo	1162	*/
		1163	case COPYRESIZED:
		1164	/*
15111	schaersvoo	1165	@ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
11806	schaersvoo	1166	@ The image may be any "bitmap" or "SVG"
17351	bpr	1167	@ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [ filename], <br>possibly resized,<br>to the region of (dx1,dy1) to (dx2,dy2) in x/y-range
14066	bpr	1168	@ (dx1:dy1) must be left top corner; (dx2:dy2) must be right bottom corner of inserted image
11806	schaersvoo	1169	@ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
17351	bpr	1170	@ URL is normal URL of network reachable image file location<br>(as seen from public_html-root or network reachable 'http://some_server/my_images/test.gif'<br>(eg no special wims paths are searched !!)
		1171	@ if command <a href="#drag">drag x/y/xy</a> is set before command ''copy``, the images will be draggable<br>javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br>the command drag is only valid for the next image<br>draggable / non-draggable images may be mixed<br>may be used together with preceding keywords ''snaptogrid``,''xsnaptogrid``,''ysnaptogrid`` or <code>snaptopoints x1,y1,x2,y2...</code>
		1172	@ if keyword <a href="#onclick">onclick</a> is set before command ''copy`` the image(s) is clickable (marked with a green rectangle around the image)<br>use ''read_dragdrop`` to get the number of the clicked image(s)<br>use command 'clearbutton some_text' to reset the reply/click array.<br>example: 4 images; student clicked on image 2 and 3: reply = 0,1,1,0<br>after clicking the clear button: reply = 0,0,0,0<br>May be mixed with commands ''drag x\|y\|xy`` (use javascript read_canvas to get the new coordinates
15111	schaersvoo	1173	@ ''onclick`` for external images may be mixed with canvas generated stuff (like lines,curves etc)
		1174	@ you may draw / userdraw / drag stuff on top of an "imported" image
17351	bpr	1175	@ when set draggable, there will be special function 'read_canvas_images()'<br>now dragging external images may be combined with 'read_canvas()' from <a href='#userdraw'>userdraw</a> or <a href='#multidraw'>multidraw</a><br>set command <a href='#precision'>precision</a> before command ''copy``
15111	schaersvoo	1176	@ use keyword <a href='#centered'>centered</a> before command 'copyresized' to place image center at given coordinates.
		1177	@ <em>TODO:move special image functions to generic 'dragstuff' library</em>
11806	schaersvoo	1178	*/
		1179	for(i = 0 ; i<9;i++){
		1180	switch(i){
		1181	case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
		1182	case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
		1183	case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
		1184	case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
		1185	case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
		1186	case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
		1187	case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
		1188	case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
		1189	case 8: URL = get_string(infile,1);
15111	schaersvoo	1190	if( int_data[1] == -1 ){ int_data[10] = 1; }else{int_data[10] = 0; }/* resized / not resized */
11806	schaersvoo	1191	/* flag error when wrong diagonal: copyresized -1,-1,-1,-1,0,0,7,7,testfig.gif */
		1192	if( int_data[7] < int_data[5] \|\| int_data[6] < int_data[4]){
17351	bpr	1193	canvas_error("in copyresized, use:<br>left top corner (dx1:dy1) and right bottom corner (dx2:dy2) ! ");
11806	schaersvoo	1194	}
		1195	int_data[2] = abs(int_data[2] - int_data[0]);/* swidth */
		1196	int_data[3] = abs(int_data[3] - int_data[1]);/* sheight */
		1197	int_data[6] = abs(int_data[6] - int_data[4]);/* width */
		1198	int_data[7] = abs(int_data[7] - int_data[5]);/* height */
15111	schaersvoo	1199	if( onclick == 0 ){ /* no mouse needed static image copy */
		1200	if(js_function[DRAW_EXTERNAL_IMAGE] == 0){
		1201	fprintf(js_include_file,"var image_copy_canvas = create_canvas%d(%d,xsize,ysize);",canvas_root_id,STATIC_IMAGE_CANVAS);
		1202	js_function[DRAW_EXTERNAL_IMAGE] = 1;
		1203	}
		1204	string_length = 1 + snprintf(NULL,0, "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],use_offset,int_data[10]);
		1205	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1206	snprintf(tmp_buffer,string_length, "draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],use_offset,int_data[10]);
11806	schaersvoo	1207	}
15111	schaersvoo	1208	else /* onclick or drag & drop external copy images */
11806	schaersvoo	1209	{
15111	schaersvoo	1210	js_function[DRAG_EXTERNAL_IMAGE] = 1;
		1211	string_length = 1 + snprintf(NULL,0, "drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],onclick,object_cnt,use_offset,use_snap,int_data[10]);
		1212	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15116	bpr	1213	snprintf(tmp_buffer,string_length, "drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],onclick,object_cnt,use_offset,use_snap,int_data[10]);
15111	schaersvoo	1214	object_cnt++;
11806	schaersvoo	1215	}
14038	schaersvoo	1216	add_to_buffer(tmp_buffer);
11806	schaersvoo	1217	break;
		1218	default: break;
		1219	}
		1220	}
14038	schaersvoo	1221	reset();
11806	schaersvoo	1222	break;
8386	schaersvoo	1223
11806	schaersvoo	1224	case CROSSHAIR:
8386	schaersvoo	1225	/*
11806	schaersvoo	1226	@ crosshair x,y,color
14379	bpr	1227	@ draw a single crosshair point at (x;y) in color ''color``
		1228	@ use command <code>crosshairsize int</code> and / or <code>linewidth int</code> to adjust
11806	schaersvoo	1229	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	1230	@%crosshair%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 2%onclick%crosshair 0,0,red%linewidth 1%onclick%crosshair 1,1,blue%linewidth 3%onclick%crosshair 3,3,green%linewidth 4%xrosshair 4,4,orange
11806	schaersvoo	1231	*/
		1232	for(i=0;i<3;i++){
		1233	switch(i){
		1234	case 0: double_data[0] = get_real(infile,0);break; /* x */
		1235	case 1: double_data[1] = get_real(infile,0);break; /* y */
		1236	case 2: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	1237	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		1238	if(use_affine == TRUE ){ transform(2,2);}
		1239	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	1240	decimals = find_number_of_digits(precision);
15111	schaersvoo	1241	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,7,[%.f],[%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1242	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1243	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,7,[%.f],[%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1244	add_to_buffer(tmp_buffer);
		1245	if(onclick != 0){object_cnt++;}
		1246	/* object_cnt++ */
11806	schaersvoo	1247	reset();
15111	schaersvoo	1248	dragstuff[7] = 1;
11806	schaersvoo	1249	break;
		1250	default:break;
		1251	}
		1252	}
15111	schaersvoo	1253	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	1254	break;
		1255
		1256	case CROSSHAIRS:
		1257	/*
		1258	@ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
14077	bpr	1259	@ draw multiple crosshair points at given coordinates in color ''color``
14246	bpr	1260	@ use command <code>crosshairsize int</code> and / or <code>linewidth int</code> to adjust
9406	schaersvoo	1261	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
12107	schaersvoo	1262	@%crosshairs_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%snaptogrid%linewidth 2%drag xy%crosshairs red,0,0,1,1,2,2,3,3%drag x%crosshairs blue,0,1,1,2,2,3,3,4
		1263	@%crosshairs_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 2%onclick%crosshairs red,0,0,1,1,2,2,3,3%onclick%crosshairs blue,0,1,1,2,2,3,3,4
		1264	*/
8386	schaersvoo	1265	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		1266	fill_color = stroke_color;
		1267	i=0;
		1268	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	1269	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8386	schaersvoo	1270	if(i%2 == 0 ){
		1271	double_data[i] = get_real(infile,0); /* x */
		1272	}
		1273	else
		1274	{
		1275	double_data[i] = get_real(infile,1); /* y */
		1276	}
		1277	i++;
		1278	}
15111	schaersvoo	1279	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		1280	if(use_affine == TRUE ){ transform(i-1,2);}
		1281	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8386	schaersvoo	1282	decimals = find_number_of_digits(precision);
11806	schaersvoo	1283	for(c=0 ; c < i-1 ; c = c+2){
15111	schaersvoo	1284	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,7,[%.f],[%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1285	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1286	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,7,[%.f],[%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1287	add_to_buffer(tmp_buffer);
		1288	if(onclick != 0){object_cnt++;}/* object_cnt++; */
8386	schaersvoo	1289	}
15111	schaersvoo	1290	dragstuff[7] = 1;
		1291	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8386	schaersvoo	1292	reset();
		1293	break;
		1294
11806	schaersvoo	1295	case CROSSHAIRSIZE:
7614	schaersvoo	1296	/*
11806	schaersvoo	1297	@ crosshairsize int
		1298	@ default 8 (px)
7614	schaersvoo	1299	*/
11806	schaersvoo	1300	crosshair_size = (int) (get_real(infile,1));
		1301	break;
15111	schaersvoo	1302	case CSS:
		1303	/*
		1304	@ css css_class
		1305	@ may be used before any ''style-able`` html object (like inputfields or buttons) or some html objects that are generated by some canvasdraw commands
		1306	@ in case of <a href="#multidraw">multidraw</a> this command must be a table css class, for example "wimstable"
		1307	@%css%size 400,400%xrange -10,10%yrange -10,10%css wims_button_help%input 0,0,10,1,Hello
		1308	*/
		1309	css_class = get_string(infile,1);
		1310	break;
11806	schaersvoo	1311
		1312	case CURSOR:
		1313	/*
14086	bpr	1314	@ cursor some CSS cursor_style
15715	schaersvoo	1315	@ alternative: pointer
13956	schaersvoo	1316	@ style can be any valid CSS property value
17351	bpr	1317	@ choose from these types:<br>alias,all-scroll,auto,cell,context-menu,col-resize,copy,crosshair,default,e-resize,<br>ew-resize,grab,grabbing,help,move,n-resize,ne-resize,nesw-resize,ns-resize,nw-resize,<br>nwse-resize,no-drop,none,not-allowed,pointer,progress,row-resize,s-resize,se-resize,<br>sw-resize,text,url(myBall.cur),auto,vertical-text,w-resize,wait,zoom-in,zoom-out,initial
13956	schaersvoo	1318	@ note: wims will not check the validity of your cursor declaration
		1319	@%cursor_css%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 3%drag xy%opacity 200,75%fcircles blue,-5,5,3,-4,-2,6,0,0,5,3,4,2,4,-5,4
11806	schaersvoo	1320	*/
		1321	fprintf(js_include_file,"canvas_div%d.style.cursor = \"%s\";",canvas_root_id,get_string(infile,1));
		1322	break;
		1323
		1324	case CURVE:
		1325	/*
		1326	@ curve color,formula(x)
15715	schaersvoo	1327	@ alternative: plot
17351	bpr	1328	@ use command <a href="#trange">trange</a> in parametric functions before <b>every</b> command curve / plot <code>trange -pi,pi<br>curve color,formula1(t),formula2(t)</code><br>A next parametric curve will only be correctly plot when trange is set again !<br/>this is a design flaw and not a feature...
14086	bpr	1329	@ use command <a href="#precision">precision</a> to increase the number of digits of the plotted points
14066	bpr	1330	@ use command <a href="#plotsteps">plotsteps</a> to increase / decrease the amount of plotted points (default 150)
11806	schaersvoo	1331	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
14379	bpr	1332	@ if you need a plot beyond xrange / yrange, use <a href="#jsplot">jsplot</a> (command ''curve`` will only calculate points within the xrange)
12107	schaersvoo	1333	@%curve%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%xlabel x-axis%ylabel y-axis%precision 1%grid 2,2,grey,2,2,6,grey%precision 1000%curve red,4sqrt(x)%curve green,2sqrt(abs(x)%curve blue,31/sqrt(x)%curve orange,4sin(4/x)%dashed%curve red,4*cos(x)
11806	schaersvoo	1334	*/
15111	schaersvoo	1335	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		1336
11806	schaersvoo	1337	if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
		1338	use_parametric = FALSE;
		1339	stroke_color = get_color(infile,0);
		1340	char *fun1 = get_string_argument(infile,0);
		1341	char *fun2 = get_string_argument(infile,1);
		1342	if( strlen(fun1) == 0 \|\| strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
15601	schaersvoo	1343	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval_parametric(xsize,ysize,fun1,fun2,xmin,xmax,ymin,ymax,tmin,tmax,plot_steps,precision,rotationcenter),2line_width,2line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
15116	bpr	1344	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15601	schaersvoo	1345	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval_parametric(xsize,ysize,fun1,fun2,xmin,xmax,ymin,ymax,tmin,tmax,plot_steps,precision,rotationcenter),2line_width,2line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
15111	schaersvoo	1346	add_to_buffer(tmp_buffer);
11806	schaersvoo	1347	}
		1348	else
		1349	{
		1350	stroke_color = get_color(infile,0);
		1351	char *fun1 = get_string_argument(infile,1);
		1352	if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
15601	schaersvoo	1353	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,rotationcenter),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
15116	bpr	1354	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15601	schaersvoo	1355	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,9,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,rotationcenter),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
15111	schaersvoo	1356	add_to_buffer(tmp_buffer);
11806	schaersvoo	1357	}
15111	schaersvoo	1358	if(onclick != 0){object_cnt++;}/* object_cnt++; */
		1359	dragstuff[9] = 1;
		1360	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	1361	reset();
		1362	break;
15116	bpr	1363
14038	schaersvoo	1364	case CURVEDARROW:
		1365	/*
		1366	@ curvedarrow x1,y1,xc,yc,x2,y2,color
17351	bpr	1367	@ draw a single headed curved arrow from (x1:y1) in direction of (xc:yc) to point (x2:y2)<br> note: the curve will <b>not go through</b> point (xc:yc)
14038	schaersvoo	1368	@ use command <a href='#arrowhead'>arrowhead</a> to set the size of the arrow head.
15111	schaersvoo	1369	@ use command <code>linewidth int</code> to adjust thickness of the arrow
		1370	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
14038	schaersvoo	1371	@%curvedarrow_drag%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 2%drag xy%curvedarrow -5,0,0,10,5,0,blue
		1372	@%curvedarrow_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%%onclick%curvedarrow -5,0,0,-10,5,0,blue%onclick%curvedarrow -8,0,0,5,8,3,green
11806	schaersvoo	1373
14029	schaersvoo	1374	h[0] = arrowhead
14066	bpr	1375	h[1] = type: 1 = single 2=double arrow
15111	schaersvoo	1376	function Shape(object_cnt,onclick,direction,type,x,y,w,h,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle,text,font_size,font_family,use_slider,rotation_center,use_offset)
14038	schaersvoo	1377	*/
15111	schaersvoo	1378	for(i=0;i<7;i++){
14038	schaersvoo	1379	switch(i){
		1380	case 0: double_data[0] = get_real(infile,0);break; /* x1 */
		1381	case 1: double_data[1] = get_real(infile,0);break; /* y1 */
		1382	case 2: double_data[2] = get_real(infile,0);break; /* xc */
		1383	case 3: double_data[3] = get_real(infile,0);break; /* yc */
		1384	case 4: double_data[4] = get_real(infile,0);break; /* y3 */
		1385	case 5: double_data[5] = get_real(infile,0);break; /* y3 */
		1386	case 6: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	1387	if(use_rotate == TRUE ){rotate(6,angle,rotationcenter,2);}
		1388	if(use_affine == TRUE ){ transform(6,2);}
		1389	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
14038	schaersvoo	1390	decimals = find_number_of_digits(precision);
15111	schaersvoo	1391	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,1,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1392	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1393	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,1,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1394	add_to_buffer(tmp_buffer);
		1395	if(onclick != 0){object_cnt++;}/* object_cnt++;*/
		1396	reset();
14038	schaersvoo	1397	break;
		1398	}
15111	schaersvoo	1399	}
		1400	dragstuff[21] = 1;
		1401	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		1402	break;
14029	schaersvoo	1403
14038	schaersvoo	1404	case CURVEDARROW2:
		1405	/*
		1406	@ curvedarrow2 x1,y1,xc,yc,x2,y2,color
17351	bpr	1407	@ draw a double headed curved arrow from (x1:y1) in direction of (xc:yc) to point (x2:y2)<br> note: the curve will <b>not go through</b> point (xc:yc)
14038	schaersvoo	1408	@ use command <a href='#arrowhead'>arrowhead</a> to set the size of the arrow head.
14077	bpr	1409	@ use command <code>linewidth int</code> to adjust thickness of the arrow
14038	schaersvoo	1410	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
		1411	@%curvedarrow_drag%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 2%drag xy%curvedarrow2 -5,0,0,10,5,0,blue
		1412	@%curvedarrow_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%%onclick%cuvedarrow2 -5,0,0,-10,5,0,blue%onclick%curvedarrow -8,0,0,5,8,3,green
14029	schaersvoo	1413
		1414	h[0] = arrowhead
14066	bpr	1415	h[1] = type: 1 = single 2=double arrow
15111	schaersvoo	1416	function Shape(object_cnt,onclick,direction,type,x,y,w,h,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle,text,font_size,font_family,use_slider,rotation_center,use_offset)
14038	schaersvoo	1417	*/
15111	schaersvoo	1418	for(i=0;i<7;i++){
14038	schaersvoo	1419	switch(i){
		1420	case 0: double_data[0] = get_real(infile,0);break; /* x1 */
		1421	case 1: double_data[1] = get_real(infile,0);break; /* y1 */
		1422	case 2: double_data[2] = get_real(infile,0);break; /* xc */
		1423	case 3: double_data[3] = get_real(infile,0);break; /* yc */
		1424	case 4: double_data[4] = get_real(infile,0);break; /* y3 */
		1425	case 5: double_data[5] = get_real(infile,0);break; /* y3 */
		1426	case 6: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	1427	if(use_rotate == TRUE ){rotate(6,angle,rotationcenter,2);}
		1428	if(use_affine == TRUE ){ transform(6,2);}
		1429	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
14038	schaersvoo	1430	decimals = find_number_of_digits(precision);
15111	schaersvoo	1431	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,2,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1432	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1433	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,2,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1434	add_to_buffer(tmp_buffer);
		1435	if(onclick != 0){object_cnt++;}/* object_cnt++;*/
		1436	dragstuff[21] = 1;
		1437	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		1438	reset();
		1439	break;
14038	schaersvoo	1440	}
15111	schaersvoo	1441	}
		1442	break;
14038	schaersvoo	1443	case CURVEDARROWS:
		1444	/*
14248	bpr	1445	@ curvedarrows color,x1,y1,xc,yc,x2,y2,...,x_(n-1),y_(n-1),xc,yc,x_n,y_n
17351	bpr	1446	@ draw curved arrows from (x1:y1) in direction of (xc:yc) to point (x2:y2), etc<br> note: the curve will <b>not go through</b> point (xc:yc)
14038	schaersvoo	1447	@ use command <a href='#arrowhead'>arrowhead</a> to set the size of the arrow head.
14077	bpr	1448	@ use command <code>linewidth int</code> to adjust thickness of the arrow
14038	schaersvoo	1449	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
		1450	@%curvedarrows_drag%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 2%drag xy%curvedarrows red,-8,0,0,8,8,0,-5,5,0,-10,6,3
		1451	@%curvedarrows_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%%onclick%curvedarrows red,-8,0,0,8,8,0,-5,5,0,-10,6,3
14029	schaersvoo	1452
14030	schaersvoo	1453	h[0] = arrowhead
14066	bpr	1454	h[1] = type: 1 = single 2=double arrow
15111	schaersvoo	1455	function Shape(object_cnt,onclick,direction,type,x,y,w,h,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle,text,font_size,font_family,use_slider,rotation_center,use_offset)
14038	schaersvoo	1456	*/
		1457	stroke_color = get_color(infile,0);/* name or hex color */
		1458	i = 0;
		1459	decimals = find_number_of_digits(precision);
15111	schaersvoo	1460	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
14038	schaersvoo	1461	while( ! done ){
15111	schaersvoo	1462	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
		1463	double_data[0] = get_real(infile,0); /* x1 */
		1464	double_data[1] = get_real(infile,0); /* y1 */
		1465	double_data[2] = get_real(infile,0); /* xc */
		1466	double_data[3] = get_real(infile,0); /* yc */
		1467	double_data[4] = get_real(infile,0); /* x3 */
		1468	double_data[5] = get_real(infile,1); /* y3 */
		1469	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,1,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1470	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1471	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,1,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1472	add_to_buffer(tmp_buffer);
		1473	if(onclick != 0){object_cnt++;}
		1474	i = i + 6;
		1475	}
		1476	if(use_rotate == TRUE ){rotate(i-6,angle,rotationcenter,2);}
		1477	if(use_affine == TRUE ){ transform(i-6,2);}
		1478	dragstuff[21] = 1;
		1479	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		1480	reset();
		1481	break;
14030	schaersvoo	1482
14038	schaersvoo	1483	case CURVEDARROWS2:
		1484	/*
		1485	@ curvedarrows2 color,x1,y1,xc,yc,x2,y2,...x_(n-1),y_(n-1),xc,yc,x_n,y_n
17351	bpr	1486	@ draw double headed curved arrows from (x1:y1) in direction of (xc:yc) to point (x2:y2), etc. <br> note: the curve will <b>not go through</b> point (xc:yc)
14038	schaersvoo	1487	@ use command <a href='#arrowhead'>arrowhead</a> to set the size of the arrow head.
14077	bpr	1488	@ use command <code>linewidth int</code> to adjust thickness of the arrow
14038	schaersvoo	1489	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
		1490	@%curvedarrows2_drag%size 400,400%xrange -10,10%yrange -10,10%cursor move%linewidth 2%drag xy%curvedarrows2 red,-8,0,0,8,8,0,-5,5,0,-10,6,3
		1491	@%curvedarrows2_click%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%%onclick%curvedarrow -5,0,0,-10,5,0,blue%onclick%curvedarrows2 red,-8,0,0,8,8,0,-5,5,0,-10,6,3
14030	schaersvoo	1492
		1493	h[0] = arrowhead
14066	bpr	1494	h[1] = type: 1 = single 2=double arrow
15111	schaersvoo	1495	function Shape(object_cnt,onclick,direction,type,x,y,w,h,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1,use_rotate,angle,text,font_size,font_family,use_slider,rotation_center,use_offset)
14038	schaersvoo	1496	*/
		1497	stroke_color = get_color(infile,0);/* name or hex color */
		1498	i = 0;
		1499	decimals = find_number_of_digits(precision);
15111	schaersvoo	1500	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
14038	schaersvoo	1501	while( ! done ){
15111	schaersvoo	1502	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
		1503	double_data[0] = get_real(infile,0); /* x1 */
		1504	double_data[1] = get_real(infile,0); /* y1 */
		1505	double_data[2] = get_real(infile,0); /* xc */
		1506	double_data[3] = get_real(infile,0); /* yc */
		1507	double_data[4] = get_real(infile,0); /* x3 */
		1508	double_data[5] = get_real(infile,1); /* y3 */
		1509	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,2,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1510	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1511	snprintf(tmp_buffer,string_length, "dragstuff.addShape(new Shape(%d,%d,%d,%d,21,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],arrow_head,arrow_head,arrow_head,2,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1512	add_to_buffer(tmp_buffer);
		1513	if(onclick != 0){object_cnt++;}
		1514	i = i + 6;
		1515	}
		1516	if(use_rotate == TRUE ){rotate(i-6,angle,rotationcenter,2);}
		1517	if(use_affine == TRUE ){ transform(i-6,2);}
		1518	dragstuff[21] = 1;
		1519	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		1520	reset();
		1521	break;
15116	bpr	1522
11806	schaersvoo	1523	case DASHED:
		1524	/*
		1525	@ dashed
		1526	@ keyword (no arguments required)
		1527	@ next object will be drawn with a dashed line
		1528	@ change dashing scheme by using command <a href="#dashtype">dashtype</a>
12107	schaersvoo	1529	@%dashed%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%line -5,-5,-5,5,red%dashtype 1,1%dline -4,-5,-4,5,green%dashtype 2,2%dline -3,-5,-3,5,blue%dashtype 3,3%dline 0,-5,0,5,orange%dashtype 4,4%dline 3,-5,3,5,brown
11806	schaersvoo	1530	*/
		1531	use_dashed = TRUE;
		1532	break;
		1533
		1534	case DASHTYPE:
		1535	/*
		1536	@ dashtype line_width_px,space_width_px
		1537	@ every indiviual object may have its own dashtype, if needed...
		1538	@ When keyword <a href='#dashed'>dashed</a> is set, the objects will be drawn with this dashtype
14086	bpr	1539	@ default value <code>dashtype 2,2</code> e.g. 2px line and 2px space
13957	schaersvoo	1540	@ HTML5 canvas specification supports more arguments (dashing schemes) ... but not all modern browsers are yet capable
13949	schaersvoo	1541	@%dashtype%size 400,400%xrange -10,10%yrange -10,10%dashtype 1,1%dhline 0,9,red%dashtype 2,2%dhline 0,8,red%dashtype 4,4%dhline 0,7,red%dashtype 6,6%dhline 0,6,red%dashtype 8,8%dhline 0,5,red%dashtype 10,10%dhline 0,4,red%dashtype 1,2%dhline 0,3,red%dashtype 2,4%dhline 0,2,red%dashtype 3,6%dhline 0,1,red%dashtype 4,8%dhline 0,0,red%linewidth 2%dashtype 1,1%dhline 0,-9,red%dashtype 2,2%dhline 0,-8,red%dashtype 4,4%dhline 0,-7,red%dashtype 6,6%dhline 0,-6,red%dashtype 8,8%dhline 0,-5,red%dashtype 10,10%dhline 0,-4,red%dashtype 1,2%dhline 0,-3,red%dashtype 2,4%dhline 0,-2,red%dashtype 4,8%dhline 0,-1,red
11806	schaersvoo	1542	*/
		1543	for(i=0;i<2;i++){
		1544	switch(i){
		1545	case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
		1546	case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
		1547	}
		1548	}
		1549	break;
		1550
		1551	case DIAMONDFILL:
		1552	/*
		1553	@ diamondfill x0,y0,dx,dy,color
		1554	@ x0,y0 in xrange / yrange
		1555	@ distances dx,dy in pixels
13936	bpr	1556	@ there is also a command <a href="#userdraw">userdraw diamondfill,color</a>
12110	schaersvoo	1557	@%diamondfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%circles red,-4,0,6,4,0,6%linewidth 1%diamondfill 0,0,5,8,blue%diamondfill 0,7,8,8,lightgreen
11806	schaersvoo	1558	*/
15111	schaersvoo	1559	js_function[DRAW_DIAMONDFILL] = 1;
11820	schaersvoo	1560	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		1561	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	1562	add_js_filltoborder(canvas_type);
11820	schaersvoo	1563	}
		1564	decimals = find_number_of_digits(precision);
7614	schaersvoo	1565	for(i=0;i<5;i++){
		1566	switch(i){
11820	schaersvoo	1567	case 0: double_data[0] = get_real(infile,0); break; /* x */
14032	schaersvoo	1568	case 1: double_data[1] = get_real(infile,0); break; /* y */
11820	schaersvoo	1569	case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
		1570	case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
11806	schaersvoo	1571	case 4: stroke_color = get_color(infile,1);
15111	schaersvoo	1572	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		1573	if(use_affine == TRUE ){ transform(2,2);}
11806	schaersvoo	1574	/* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
14208	schaersvoo	1575	string_length = 1 + snprintf(NULL,0, "draw_diamondfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
		1576	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11820	schaersvoo	1577	snprintf(tmp_buffer,string_length,"draw_diamondfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
11806	schaersvoo	1578	add_to_buffer(tmp_buffer);
11820	schaersvoo	1579	fill_cnt++;
15111	schaersvoo	1580	reset();
11806	schaersvoo	1581	break;
		1582	default:break;
		1583	}
		1584	}
		1585	break;
8224	bpr	1586
11806	schaersvoo	1587	case DOTFILL:
		1588	/*
		1589	@ dotfill x0,y0,dx,dy,color
		1590	@ x0,y0 in xrange / yrange
		1591	@ distances dx,dy in pixels
		1592	@ radius of dots is linewidth
13936	bpr	1593	@ there is also a command <a href="#userdraw">userdraw dotfill,color</a>
12110	schaersvoo	1594	@%dotfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%circles red,-4,0,6,4,0,6%dotfill 0,0,5,8,blue%dotfill 0,7,8,8,lightgreen
11806	schaersvoo	1595	*/
15111	schaersvoo	1596	js_function[DRAW_DOTFILL] = 1;
11817	schaersvoo	1597	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		1598	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	1599	add_js_filltoborder(canvas_type);
11817	schaersvoo	1600	}
		1601	decimals = find_number_of_digits(precision);
11806	schaersvoo	1602	for(i=0;i<5;i++){
		1603	switch(i){
11817	schaersvoo	1604	case 0: double_data[0] = get_real(infile,0); break; /* x in px */
		1605	case 1: double_data[1] = get_real(infile,0); break; /* y in py */
		1606	case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
		1607	case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
11806	schaersvoo	1608	case 4: stroke_color = get_color(infile,1);
15111	schaersvoo	1609	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		1610	if(use_affine == TRUE ){ transform(2,2);}
11806	schaersvoo	1611	/* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
14208	schaersvoo	1612	string_length = 1 + snprintf(NULL,0, "draw_dotfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
		1613	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11817	schaersvoo	1614	snprintf(tmp_buffer,string_length,"draw_dotfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
11806	schaersvoo	1615	add_to_buffer(tmp_buffer);
11817	schaersvoo	1616	fill_cnt++;
15111	schaersvoo	1617	reset();
7614	schaersvoo	1618	break;
11806	schaersvoo	1619	default:break;
7614	schaersvoo	1620	}
		1621	}
11806	schaersvoo	1622	break;
		1623
		1624	case DRAG:
		1625	/*
		1626	@ drag [x][y][xy]
		1627	@ the next object will be draggable in x / y / xy direction
14077	bpr	1628	@ the displacement can be read by <code>javascript:read_dragdrop();</code>
17351	bpr	1629	@ the precision (default 2 decimals) in the student reply may be set with command <a href="#precision">precision</a>.<br>Use this 'precision' command before this command 'drag x\|y\|xy' !
14078	bpr	1630	@ <a href='#onclick'>onclick</a> and ''drag x\|y\|xy`` may be combined (for different objects: a single object can either be onclick or drag, not both )
14077	bpr	1631	@ ''multi_objects`` will be numbered in the given x/y-sequence (example: points red,0,0,1,1,2,2,3,3: point (0:0) is object_number 1)
17351	bpr	1632	@ <b>attention</b>: static objects and ''onclick/drag`` objects of the same type (like point,circle,etc) with the same coordinates (e.g. objects that overlap) will give problems in the ''recognition algorithm``) in this example<br> <code>linewidth 4<br>point 0,0,red<br>drag xy<br>point 0,0,blue</code><br>the red point will not be recognised as draggable ! in the example<br><code>linewidth 4<br>drag xy<br>point 0,0,red<br>drag xy<br>point 0,0,blue</code><br>both points will be recognised
		1633	@ the answer is: drag_or_onclick_object_number : Xorg : Yorg : Xnew : Ynew<br>wherein object_number is the sequence number of the draggable & onclick objects in your script.<br>Only draggable & onclick objects will have an object_number (e.g things like point,crosshair,line,segment,circle,rect,triangle...etc)
15650	reyssat	1634	@ use keyword <a href='#snaptogrid'>snaptogrid</a>, <a href='#xsnaptogrid'>xsnaptogrid</a>, <a href='#ysnaptogrid'>ysnaptogrid</a> or command <a href='#snaptopoints'>snaptopoints x1,y1,x2,y2,...</a> to switch from free to discrete movement
17351	bpr	1635	@ in case of external images (commands copy / copyresized) the external image can be set draggable ; always xy. <br>The function javascript;read_canvas() will return the xy-coordinates of all images.
13829	bpr	1636	@%drag_x%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag x%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4
		1637	@%drag_y%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag y%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4
		1638	@%drag_xy%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor lightblue%opacity 200,40%drag xy%linewidth 2%circles blue,-5,0,3,0,0,2,5,0,4,0,4,3,0,-3,4
11806	schaersvoo	1639	*/
		1640	temp = get_string(infile,1);
		1641	if(strstr(temp,"xy") != NULL ){
		1642	drag_type = 0;
		1643	}
		1644	else
		1645	{
		1646	if(strstr(temp,"x") != NULL ){
		1647	drag_type = 1;
		1648	}
		1649	else
		1650	{
		1651	drag_type = 2;
		1652	}
		1653	}
		1654	/* assuming all drag&drop coordinates the same precision: so set only once */
		1655	if( print_drag_params_only_once == FALSE ){
15111	schaersvoo	1656	fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;",precision);
11806	schaersvoo	1657	print_drag_params_only_once = TRUE;
		1658	}
		1659	onclick = 2;
		1660	/* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
15111	schaersvoo	1661	use_dragstuff = 2;
		1662	js_function[INTERACTIVE] = 1;
7614	schaersvoo	1663	break;
8386	schaersvoo	1664
11806	schaersvoo	1665	case ELLIPSE:
8351	schaersvoo	1666	/*
17669	bpr	1667	@ ellipse xc,yc,width_x,height_y,color
		1668	@ ellipses with center xc/yc and width/height in x/y-range etc (this differs from flydraw syntax!)
9406	schaersvoo	1669	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
11806	schaersvoo	1670	@ will shrink / expand on zoom out / zoom in
13949	schaersvoo	1671	@%ellipse%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor orange%opacity 200,40%linewidth 3%drag xy%ellipse 0,0,6,4,green%zoom blue
8351	schaersvoo	1672	*/
11806	schaersvoo	1673	for(i=0;i<5;i++){
		1674	switch(i){
		1675	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
		1676	case 1:double_data[1] = get_real(infile,0);break; /* y-values */
14066	bpr	1677	case 2:double_data[2] = get_real(infile,0);break; /* rx -> px */
		1678	case 3:double_data[3] = get_real(infile,0);break; /* ry -> px */
11806	schaersvoo	1679	case 4:stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	1680	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,4);}
		1681	if(use_affine == TRUE ){ transform(2,4);}
		1682	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	1683	decimals = find_number_of_digits(precision);
15111	schaersvoo	1684	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,3,[%.f],[%.f],[%.f],[%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1685	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1686	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,3,[%.f],[%.f],[%.f],[%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1687	add_to_buffer(tmp_buffer);
		1688	if(onclick != 0){object_cnt++;}/* object_cnt++; */
		1689	dragstuff[3] = 1;
		1690	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	1691	reset();
		1692	break;
		1693	}
		1694	}
		1695	break;
13829	bpr	1696
12110	schaersvoo	1697	case ELLIPSES:
		1698	/*
17669	bpr	1699	@ ellipses color,xc1,yc1,width_x1,height_y1,xc2,yc2,width_x2,height_y2,xc3,yc3,width_x3,height_y3,...
		1700	@ ellipses with center and height in x/y-range etc (this differs from flydraw syntax!)
12110	schaersvoo	1701	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
		1702	@ will shrink / expand on zoom out / zoom in
13949	schaersvoo	1703	@%ellipses%size 400,400%xrange -10,10%yrange -10,10%filled%fillcolor orange%opacity 200,40%linewidth 3%onclick%ellipses red,-3,0,2,4,0,0,4,2,3,0,6,2
12110	schaersvoo	1704	*/
13829	bpr	1705
15111	schaersvoo	1706	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
12110	schaersvoo	1707	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		1708	fill_color = stroke_color;
		1709	i=1;
		1710	while( ! done ){ /* get next item until EOL*/
		1711	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
		1712	switch (i%4){
		1713	case 1:double_data[i-1] = get_real(infile,0);break; /* x */
		1714	case 2:double_data[i-1] = get_real(infile,0);break; /* y */
		1715	case 3:double_data[i-1] = get_real(infile,0);break; /* rx */
		1716	case 0:double_data[i-1] = get_real(infile,1);break; /* ry */
		1717	default: break;
		1718	}
		1719	i++;
		1720	}
15111	schaersvoo	1721	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,4);}
		1722	if(use_affine == TRUE ){ transform(i-1,4);}
12110	schaersvoo	1723	decimals = find_number_of_digits(precision);
		1724	for(c = 0 ; c < i-1 ; c = c+4){
15111	schaersvoo	1725	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,3,[%.f],[%.f],[%.f],[%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+2],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1726	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		1727	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,3,[%.f],[%.f],[%.f],[%.f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+2],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		1728	add_to_buffer(tmp_buffer);
		1729	if(onclick != 0){object_cnt++;} /* object_cnt++; */
12110	schaersvoo	1730	}
		1731	reset();
15111	schaersvoo	1732	dragstuff[3] = 1;
		1733	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
12110	schaersvoo	1734	break;
		1735
11806	schaersvoo	1736	case FILLALL:
		1737	/*
		1738	@ fillall color,x1,y1,x2,y2...x_n,y_n
15111	schaersvoo	1739	@ fill all region containing points (x1:y1),(x2:y2)...(x_n:y_n) with color 'color'
15650	reyssat	1740	@ any other colors (objects) in the <a href="#canvastype">canvastype</a> will act as border to the bucket fill
14246	bpr	1741	@ use this command after all boundary objects are declared.
15111	schaersvoo	1742	@ Use command 'userdraw clickfill,color' for user click driven flood fill.
		1743	@ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
17351	bpr	1744	@ note: the fill-family of commands are very (client) cpu intensive operations!<br>filling is done pixel by pixel e.g. image size of 400x400 uses 160000 pixels: each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br>on every data a few operations / comparisons are done...<br>So have pity on your students CPU..
12110	schaersvoo	1745	@%fillall%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%vlines black,-5,0,-5,0,-4,0,-4,0,3,0,3,0%hlines black,-5,0,-5,0,-5,4,-5,4,-5,-2,-5,-2%circles green,0,0,2,3,3,5,-5,-5,3%opacity 240,50%fillall blue,1,1,8,8,-8,-8
11806	schaersvoo	1746	*/
		1747	decimals = find_number_of_digits(precision);
		1748	fill_color=get_color(infile,0); /* how nice: now the color comes first...*/
8351	schaersvoo	1749	i=0;
11806	schaersvoo	1750	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		1751	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	1752	add_js_filltoborder(canvas_type);
11806	schaersvoo	1753	}
8351	schaersvoo	1754	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	1755	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8351	schaersvoo	1756	if(i%2 == 0 ){
		1757	double_data[i] = get_real(infile,0); /* x */
		1758	}
		1759	else
		1760	{
		1761	double_data[i] = get_real(infile,1); /* y */
14208	schaersvoo	1762	string_length = 1 + snprintf(NULL,0, "setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[i-1],decimals,double_data[i],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
		1763	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11818	schaersvoo	1764	snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[i-1],decimals,double_data[i],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
11806	schaersvoo	1765	add_to_buffer(tmp_buffer);
		1766	fill_cnt++;
8351	schaersvoo	1767	}
		1768	i++;
		1769	}
11806	schaersvoo	1770	break;
		1771
		1772	case FILLED:
		1773	/*
		1774	@ filled
		1775	@ keyword (no arguments required)
14077	bpr	1776	@ the next ''fillable`` object (only the next !) will be filled
14066	bpr	1777	@ use command <a href="#fillcolor">fillcolor color</a> to set fillcolor
11839	schaersvoo	1778	@ use <a href="#fillpattern">fillpattern</a> for non-solid color filling.
14086	bpr	1779	@ use command <code>opacity 0-255,0-255</code> to set stroke and fill-opacity
17351	bpr	1780	@ use command <a href='#fill'>fill x,y,color</a> or <a href="#floodfill">floodfill x,y,color</a> to fill the space around (x;y) with color <br>pixel operation implemented in javascript: use with care !
11806	schaersvoo	1781	*/
11839	schaersvoo	1782	use_filled = 1;
11806	schaersvoo	1783	break;
		1784
		1785	case FILLCOLOR:
		1786	/*
		1787	@ fillcolor colorname or #hex
15111	schaersvoo	1788	@ set the color: mainly used for command 'userdraw obj,stroke_color'
11806	schaersvoo	1789	@ all fillable massive objects will have a fillcolor == strokecolor (just to be compatible with flydraw...)
11839	schaersvoo	1790	@ see <a href="#fillpattern">fillpattern</a> for non-solid color filling.
11806	schaersvoo	1791	*/
		1792	fill_color = get_color(infile,1);
		1793	break;
		1794
11837	schaersvoo	1795	case FILLPATTERN:
		1796	/*
15601	schaersvoo	1797	@ fillpattern grid \| hatch \| diamond \| dot \| image_url
15715	schaersvoo	1798	@ alternative: settile image_url
11837	schaersvoo	1799	@ use a pattern as fillstyle
14066	bpr	1800	@ suitable for all fillable object including the <a href="#userdraw">userdraw objects' family</a>
15601	schaersvoo	1801	@ note: do not use the ''f`` for a fillable object : this is used exclusively for solid colour filling.
17351	bpr	1802	@ the fillcolor is set by the object command, for example:<br><code>size 370,370<br>xrange -5,5<br>yrange -5,5<br>opacity 165,150<br>fillpattern grid<br>fcircle -6,3,160,blue<br>fillpattern dot<br>fcircle -3,-3,160,red<br>fillpattern hatch<br>fcircle 0,3,160,green<br>filpattern diamond<br>fcircle 3,-3,160,cyan<br>userdraw dotfill,blue<br>zoom red</code>
14078	bpr	1803	@ the pattern dimensions are hardcoded (linewidth, radius,dx,dy are fixed)
11837	schaersvoo	1804	@ the pattern color is set by command <a href='#fillcolor'>fillcolor</a> and <a href='#opacity'>opacity</a>
11839	schaersvoo	1805	@ see <a href="#fillcolor">fillcolor</a> for solid color filling.
17351	bpr	1806	@ when using an image-url, make sure it contains an ''/`` in the filename...''fillpattern $module_dir/gifs/test.jpg`` will fill the next fillable object with this image.\|<br>the argument to html5 canvas routine 'createPattern(img,argument)' is set to ''repeat`` e.g. if the image is smaller then the canvas, multiple copies will be used to fill the area ( e.g. ctx.fillStyle() = pattern)<br>for example:<br><code>size 150,150<br>xrange -5,5<br>yrange -5,5<br>drag xy<br>fillpattern gifs/en.gif<br>fcircle 0,0,100,red<br>fillpattern gifs/nl.gif<br>drag xy<br>fcircle -3,2,100,green<br>fillpattern gifs/cn.gif<br>drag xy<br>fcircle 3,2,100,green</code>
		1807	@ fillpattern is also active for <a href="#userdraw">userdraw object,color</a>...<br>the userdraw family a has also ''clickfill type`` (e.g. an object gets filled between boundaries, when clicked) commands like:<br>'userdraw dotfill,color'<br>'userdraw hatchfill,color' etc
15111	schaersvoo	1808	@%fillpattern_1%size 400,400%xrange -5,5%yrange -5,5%opacity 165,150%fillpattern grid%circle -6,3,160,blue%fillpattern dot%circle -3,-3,160,red%fillpattern hatch%circle 0,3,160,green%filpattern diamond%circle 3,-3,160,cyan%zoom red
		1809	@%fillpattern_2%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%fillcolor green%fillpattern hatch%#fillpattern dot,diamond,grid,imageurl%userdraw circle,red
11837	schaersvoo	1810	*/
		1811	temp = get_string(infile,1);
15111	schaersvoo	1812	use_filled = 0;
		1813	js_function[DRAW_FILL_PATTERN] = 1;
15116	bpr	1814	if( strstr(temp,"grid") != 0 ){ use_filled = 2;}
15111	schaersvoo	1815	else{
		1816	if( strstr(temp,"hatch") != 0 ){ use_filled = 3;}
		1817	else{
		1818	if( strstr(temp,"diamond") != 0 ){ use_filled = 4;}
		1819	else{
		1820	if( strstr(temp,"dot") != 0 ){ use_filled = 5;}
		1821	else{
15600	schaersvoo	1822	if( strstr(temp,"/") != 0 ){ /* get_image_from_url() needs to be called after function definition...*/
		1823	use_filled = 6;js_function[JS_LOAD_IMAGE] = 1;
		1824	string_length = 1 + snprintf(NULL,0,"get_image_from_url(\"%s\");",temp);
		1825	check_string_length(string_length);
		1826	tmp_buffer = my_newmem(string_length);
		1827	snprintf(tmp_buffer,string_length,"get_image_from_url(\"%s\");",temp);
		1828	add_to_buffer(tmp_buffer);
		1829	}
15111	schaersvoo	1830	}
		1831	}
		1832	}
		1833	}
		1834	if( use_filled == 0 ){canvas_error("fillpattern unknown or typo...choose grid,hatch,diamond of dot...");}
11837	schaersvoo	1835	break;
11806	schaersvoo	1836	case FILLTOBORDER:
		1837	/*
		1838	@ filltoborder x,y,bordercolor,color
15111	schaersvoo	1839	@ fill the region of point (x:y) with color 'color'
11806	schaersvoo	1840	@ any other color will not act as border to the bucket fill
14246	bpr	1841	@ use this command after all boundary objects are declared.
11806	schaersvoo	1842	@ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
17351	bpr	1843	@ note: filltoborder is a very (client) cpu intensive operation!<br>filling is done pixel by pixel e.g. image size of 400x400 uses 160000 pixels: each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br>on every data a few operations / comparisons are done...<br>So have pity on your students CPU..
11806	schaersvoo	1844	@ maybe used together with command <a href="#userdraw">userdraw clickfill,color</a>
12110	schaersvoo	1845	@%filltoborder%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%filltoborder 6,6,blue,blue%filltoborder 6,-6,blue,red
11806	schaersvoo	1846	*/
		1847	for(i=0 ;i < 4 ; i++){
		1848	switch(i){
		1849	case 0:double_data[0] = get_real(infile,0);break;
		1850	case 1:double_data[1] = get_real(infile,0);break;
		1851	case 2:bgcolor = get_color(infile,0);break;
		1852	case 3:fill_color = get_color(infile,1);
		1853	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
15111	schaersvoo	1854	js_function[DRAW_FILLTOBORDER] = 1;
		1855	add_js_filltoborder(canvas_type);
11806	schaersvoo	1856	}
		1857	decimals = find_number_of_digits(precision);
		1858	/* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
14208	schaersvoo	1859	string_length = 1 + snprintf(NULL,0, "setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
		1860	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11818	schaersvoo	1861	snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
11806	schaersvoo	1862	add_to_buffer(tmp_buffer);
		1863	fill_cnt++;
15111	schaersvoo	1864	reset();
11806	schaersvoo	1865	break;
		1866	default:break;
8351	schaersvoo	1867	}
11806	schaersvoo	1868	}
		1869	break;
		1870	case FLOODFILL:
		1871	/*
		1872	@ floodfill x,y,color
15715	schaersvoo	1873	@ alternative: fill
15111	schaersvoo	1874	@ fill the region of point (x:y) with color 'color'
11806	schaersvoo	1875	@ any other color or size of picture (borders of picture) will act as border to the bucket fill
14246	bpr	1876	@ use this command after all boundary objects are declared.
14077	bpr	1877	@ Use command <code>userdraw clickfill,color</code> for user click driven flood fill.
11806	schaersvoo	1878	@ use command <a href="#canvastype">canvastype </a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)
17351	bpr	1879	@ note: floodfill is a very (client) cpu intensive operation!<br>filling is done pixel by pixel e.g. image size of 400x400 uses 160000 pixels: each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br>on every data a few operations / comparisons are done...<br>So have pity on your students CPU..
12110	schaersvoo	1880	@%floodfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%floodfill 6,6,blue%floodfill 6,-6,red
11806	schaersvoo	1881	*/
		1882	for(i=0 ;i < 4 ; i++){
		1883	switch(i){
		1884	case 0:double_data[0] = get_real(infile,0);break;
		1885	case 1:double_data[1] = get_real(infile,0);break;
		1886	case 2:fill_color = get_color(infile,1);
		1887	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
15111	schaersvoo	1888	js_function[DRAW_FILLTOBORDER] = 1;
		1889	add_js_filltoborder(canvas_type);
11806	schaersvoo	1890	}
		1891	decimals = find_number_of_digits(precision);
		1892	/* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
14208	schaersvoo	1893	string_length = 1 + snprintf(NULL,0, "setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
		1894	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11818	schaersvoo	1895	snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.f,%.f,[%s,%d],[%s,%d],%d,false,null);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215),FILL_CANVAS+fill_cnt);
11806	schaersvoo	1896	add_to_buffer(tmp_buffer);
		1897	fill_cnt++;
		1898	break;
		1899	default:break;
		1900	}
		1901	}
		1902	reset();
		1903	break;
		1904
		1905	case FONTCOLOR:
		1906	/*
		1907	@ fontcolor color
		1908	@ color: hexcolor or colorname
		1909	@ default: black
15650	reyssat	1910	@ use command <a href="#fontfamily">fontfamily</a> to deviate from default font type
13956	schaersvoo	1911	@%fontcolor%size 400,400%xrange -10,10%yrange -10,10%fontcolor red%#note: use command fontfamily to change size and shape%axis%axisnumbering%grid 2,2,grey,2,2,4,grey
11806	schaersvoo	1912	*/
		1913	font_color = get_color(infile,1);
		1914	break;
		1915
		1916	case FONTFAMILY:
		1917	/*
		1918	@ fontfamily font_description
		1919	@ set the font family; for browsers that support it
15313	schaersvoo	1920	@ font_description: Arial, Courier, Helvetica etc
		1921	@ in case commands <code>string color,x,y,the string</code>, <code>stringup color,x,y,rotation,the string</code>, ''fontfamily`` can be something like:<code>fontfamily italic 34pt Arial</code>. Use correct syntax: ''font style``, ''font size pt``, ''fontfamily``
		1922	@%fontfamily%size 400,400%xrange -10,10%yrange -10,10 %fontfamily Bold 10pt Arial%string blue,-9,9,10 pt Arial%fontfamily Italic 20pt Arial%string blue,0,9,20 pt Arial%fontfamily Bold 10pt Helvetica%string blue,-9,5,10 pt Helvetica%fontfamily Italic 20pt Helvetica%string blue,0,5,20 pt Helvetica %fontfamily Bold 10pt Courier%string blue,-9,0,10 pt Courier%fontfamily Italic 20pt Courier%string blue,0,0,20 pt Courier%fontfamily Bold 10pt Fixed%string blue,-9,-5,10 pt Fixed%fontfamily Italic 20pt Fixed%string blue,0,-5,20 pt Fixed %fontfamily Bold 10pt Times%string blue,-9,-9,10 pt Times%fontfamily Italic 20pt Times%string blue,0,-9,20 pt Times
13959	bpr	1923
11806	schaersvoo	1924	*/
		1925	font_family = get_string(infile,1);
		1926	break;
		1927
		1928	case FONTSIZE:
		1929	/*
		1930	@ fontsize font_size
		1931	@ default value 12
17351	bpr	1932	@ note: for some macros (like ''grid \| legend \| xaxistext \| xlabel`` etc) sometimes command <a href="#fontfamily">fontfamily</a> can be used for some specific font-setting<br>this is however not always very straight forward... so just try and see what happens
11806	schaersvoo	1933	*/
		1934	font_size = (int) (get_real(infile,1));
		1935	break;
		1936
		1937	case FUNCTION_LABEL:
		1938	/*
15313	schaersvoo	1939	@ functionlabel label_1:label_2:label_3...
15512	bpr	1940	@ alternative: functionlabels
15111	schaersvoo	1941	@ default value ''f(x)=:g(x)=:h(x)=:i(x)=:j(x)=:k(x)=:m(x)=:n(x)=``
11806	schaersvoo	1942	@ no mathml allowed (just ascii string)
13956	schaersvoo	1943	@ use command <a href='#fontsize'>fontsize int</a> to adjust the size
		1944	@ use command <a href='#strokecolor'>strokecolor colorname</a> to adjust the labels (individually, if needed)
14066	bpr	1945	@ if needed, use before every command <a href='#userinput'>userinput function \| inputfield \| textarea</a>
15111	schaersvoo	1946	@ no limit in amount of inputfields for userbased function plotting
15313	schaersvoo	1947	@%function_label%size 400,400%xrange -5,5%yrange -5,5%precision 0%axis%axisnumbering%opacity 100,190%grid 1,1,grey,2,2,5,black%linewidth 3%linewidth 1%precision 1000%functionlabels F(x)=:H(x)=:Yield(x)=%strokecolor green%userinput function%strokecolor red%userinput function%strokecolor blue%userinput function
11806	schaersvoo	1948	*/
15111	schaersvoo	1949	temp = get_string_argument(infile,1);
		1950	function_label = list2js_array(temp,":");
15116	bpr	1951
11806	schaersvoo	1952	break;
		1953
14078	bpr	1954	case GRID:/* xmajor,ymajor,gridcolor [,xminor,yminor,tick length (px), axis/tickscolor]*/
11806	schaersvoo	1955	/*
		1956	@ grid step_x,step_y,gridcolor
14177	bpr	1957	@ if keywords <a href="#axis">axis</a> or <a href="#axisnumbering">axisnumbering</a> are set, use: <code>grid step_x,step_y,major_color,minor_x,minor_y,tics height in px,axis_color</code> minor x step = step_x / minor_x
15313	schaersvoo	1958	@ in that case, use command <a href="#fontcolor">fontcolor</a>, <a href="#fontsize">fontsize</a> and / or <a href="#fontfamily">fontfamily</a> to adjust font; defaults: black,12,Arial
14071	bpr	1959	@ if xmin > 0 and/or ymin > 0 and zooming / panning is not active: be aware that the x/y-axis numbering and x/y major/minor tic marks will not be visual as they are placed under the x-axis and left to the y-axis (in Quadrant II and IV)
14066	bpr	1960	@ can <b>not</b> be set <a href="#onclick">onclick</a> or <a href="#drag">drag xy</a>
15313	schaersvoo	1961	@ use commands <a href="#xlabel">xlabel some_string</a> and/or <a href="#ylabel">ylabel some_string</a> to label axis; use command ''fontsize`` to adjust size: the font family is non-configurable 'italic your_fontsize px Arial' !
		1962	@ see commands <a href="#xaxis">xaxis or xaxistext</a>, <a href="#yaxis">yaxis or yaxistext</a> to set tailormade values on axis (the used font is set by command <a href="#fontfamily">fontfamily</a>; default '12px Arial')
		1963	@ see command <a href="#legend">legend</a> to set a legend for the graph; use command <a href="#fontsize">fontsize</a> to adjust size (the font family is non-configurable 'bold your_fontsize px Arial')
12110	schaersvoo	1964	@%grid%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%zoom red
		1965	@%grid_axis%size 400,400%xrange -10,10%yrange -10,10%axis%grid 1,1,grey,2,2,6,black%zoom red
15111	schaersvoo	1966	@%grid_axis_axisnumbering%size 400,400%xrange -10,10%yrange -10,10%fontfamily Italic 14px Courier%axis%axisnumbering%precision 0%grid 1,1,grey,2,2,6,black%zoom red
11806	schaersvoo	1967	*/
		1968	if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
15111	schaersvoo	1969	js_function[DRAW_GRID] = 1;
11806	schaersvoo	1970	for(i=0;i<4;i++){
		1971	switch(i){
		1972	case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
		1973	case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
		1974	case 2:
		1975	if( use_axis == TRUE ){
		1976	stroke_color = get_color(infile,0);
		1977	done = FALSE;
		1978	int_data[0] = (int) (get_real(infile,0));/* xminor */
		1979	int_data[1] = (int) (get_real(infile,0));/* yminor */
		1980	int_data[2] = (int) (get_real(infile,0));/* tic_length */
		1981	fill_color = get_color(infile,1); /* used as axis_color*/
8351	schaersvoo	1982	}
		1983	else
		1984	{
11806	schaersvoo	1985	int_data[0] = 1;
		1986	int_data[1] = 1;
		1987	stroke_color = get_color(infile,1);
		1988	fill_color = stroke_color;
8351	schaersvoo	1989	}
11806	schaersvoo	1990	if( double_data[0] <= 0 \|\| double_data[1] <= 0 \|\| int_data[0] <= 0 \|\| int_data[1] <= 0 ){canvas_error("major or minor ticks must be positive !");}
		1991	/* set snap_x snap_y values in pixels */
		1992	fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
15111	schaersvoo	1993	fprintf(js_include_file,"\n/* add grid /function redraw_grid(){draw_grid%d(%d,%d,%.2f,%.f,%.*f,%d,%d,%d,%d,\"%s\",\"%s\",%d,\"%s\",%d,%d,%d,%d,%d,\"%s\",%.2f);return;};",canvas_root_id,GRID_CANVAS,precision,stroke_opacity,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],int_data[2],line_width,stroke_color,fill_color,font_size,font_family,use_axis,use_axis_numbering,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
		1994	string_length = 1 + snprintf(NULL,0, "redraw_grid();\n");
14208	schaersvoo	1995	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	1996	snprintf(tmp_buffer,string_length, "redraw_grid();\n");
11806	schaersvoo	1997	add_to_buffer(tmp_buffer);
		1998	break;
8351	schaersvoo	1999	}
		2000	}
		2001	reset();
		2002	break;
11806	schaersvoo	2003	case GRIDFILL:
		2004	/*
		2005	@ gridfill x0,y0,dx,dy,color
		2006	@ x0,y0 in xrange / yrange
		2007	@ distances dx,dy in pixels
13936	bpr	2008	@ there is also a command <a href="#userdraw">userdraw gridfill,color</a>
12110	schaersvoo	2009	@%gridfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%gridfill 6,6,10,10,blue%gridfill 6,-6,6,6,red
		2010
11806	schaersvoo	2011	*/
15111	schaersvoo	2012	js_function[DRAW_GRIDFILL] = 1;
11820	schaersvoo	2013	decimals = find_number_of_digits(precision);
		2014	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		2015	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	2016	add_js_filltoborder(canvas_type);
11820	schaersvoo	2017	}
11806	schaersvoo	2018	for(i=0;i<5;i++){
		2019	switch(i){
11820	schaersvoo	2020	case 0: double_data[0] = get_real(infile,0); break; /* x */
		2021	case 1: double_data[1] = get_real(infile,0); break; /* y */
		2022	case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
		2023	case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
11806	schaersvoo	2024	case 4: stroke_color = get_color(infile,1);
14208	schaersvoo	2025	string_length = 1 + snprintf(NULL,0, "draw_gridfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
		2026	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11820	schaersvoo	2027	snprintf(tmp_buffer,string_length,"draw_gridfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
11806	schaersvoo	2028	add_to_buffer(tmp_buffer);
11820	schaersvoo	2029	fill_cnt++;
15111	schaersvoo	2030	reset();
11806	schaersvoo	2031	break;
		2032	default:break;
		2033	}
		2034	}
		2035	break;
8386	schaersvoo	2036
16892	schaersvoo	2037	case GROUP:
16972	bpr	2038	/*
16892	schaersvoo	2039	@ group
		2040	@ keyword
		2041	@ work in 'progress'
17351	bpr	2042	@ all objects() after the command and until <a href="#kill">kill group</a> or <a href="#killslider">killslider</a> may be moved together with mouse moverments<br> () for now all real canvas objects and latex / xml ; but no images (work in progress)
16892	schaersvoo	2043	@ may be combined with slider driven movements or drag & drop
		2044	@%group%%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%linewidth 4%rotationcenter 0,0%slider -2pi,2pi,300,40,angle active,rotate%snaptogrid%ftriangle 0,-4,-2,-2,4,--5,blue%fillcolor red%fcircle -4.4,4.4,40,blue%kill slider%slider -20,20,300,40,x active,x-slide%ftriangle -2,0,0,4,2,0,green%fcircle 4.4,4.5,40,red%kill slider%slider -20,20,300,40,y active,y-slide%fcircle 4,-4,40,green%linewidth 4%fcircle -4,-4,40,orange%kill slider%group%fcircle -4.4,4.5,10,blue%fcircle -5.4,4.5,10,blue%fcircle -6.4,4.5,10,blue%fcircle -4.4,8,16,green%fcircle -5.4,8,16,green%fcircle -6.4,8,16,green%mouse red,22%zoom red
		2045	*/
		2046	use_slider++;
		2047	add_slider(2);
		2048	no_reset = TRUE;
		2049	int c = 0;
		2050	for(i=last_slider;i<=use_slider;i++){ int_data[c] = i; c++; }
		2051	my_sliders = data2js_array(int_data,use_slider - last_slider+1);
		2052	if( precision == 0 ){precision = 100;}
		2053	onclick = 5;
		2054	use_dragstuff = 2;
		2055	drag_type = 0;
		2056	js_function[INTERACTIVE] = 1;
		2057	fprintf(js_include_file,"var slider%d;dragdrop_precision = %d;use_dragdrop_reply = true;",use_slider,precision);
16972	bpr	2058	string_length = 1 + snprintf(NULL,0,"slider%d = new move_group(%d);\n",use_slider,use_slider);
16892	schaersvoo	2059	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
16972	bpr	2060	snprintf(tmp_buffer,string_length,"slider%d = new move_group(%d);\n",use_slider,use_slider);
16892	schaersvoo	2061	add_to_buffer(tmp_buffer);
		2062	break;
		2063
8244	schaersvoo	2064	case HALFLINE:
		2065	/*
		2066	@ demiline x1,y1,x2,y2,color
15715	schaersvoo	2067	@ alternative: halfline
15111	schaersvoo	2068	@ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
9406	schaersvoo	2069	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12110	schaersvoo	2070	@%halfline%size 400,400%xrange -10,10%yrange -10,10%halfline -5,5,0,0,red%halfline -5,-5,0,0,blue
8244	schaersvoo	2071	*/
18071	schaersvoo	2072	for(i=0; i<13;i++){double_data[i]=0;}
		2073
8244	schaersvoo	2074	for(i=0;i<5;i++){
		2075	switch(i){
		2076	case 0: double_data[0]= get_real(infile,0);break; /* x-values */
		2077	case 1: double_data[1]= get_real(infile,0);break; /* y-values */
		2078	case 2: double_data[10]= get_real(infile,0);break; /* x-values */
		2079	case 3: double_data[11]= get_real(infile,0);break; /* y-values */
		2080	case 4: stroke_color=get_color(infile,1);/* name or hex color */
		2081	if(double_data[0] == double_data[10]){ /* vertical halfline */
		2082	if(double_data[1] < double_data[11]){
		2083	double_data[3] = ymax + 1000;
		2084	}
		2085	else
		2086	{
		2087	double_data[3] = ymin - 1000;
		2088	}
10953	bpr	2089	double_data[2] = double_data[0];
8244	schaersvoo	2090	}
		2091	else
		2092	{ /* horizontal halfline*/
		2093	if( double_data[1] == double_data[11] ){
		2094	if( double_data[0] < double_data[10] ){
		2095	double_data[2] = xmax + 1000; /* halfline to the right */
		2096	}
		2097	else
		2098	{
		2099	double_data[2] = xmin - 1000; /* halfline to the left */
		2100	}
		2101	double_data[3] = double_data[1];
		2102	}
		2103	else
		2104	{
		2105	/* any other halfline */
		2106	/* slope */
		2107	double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
		2108	/* const */
		2109	double_data[13] = double_data[1] - double_data[12]*double_data[0];
		2110	if( double_data[0] < double_data[10] ){
		2111	double_data[2] = double_data[2] + 1000;
		2112	}
		2113	else
		2114	{
		2115	double_data[2] = double_data[2] - 1000;
		2116	}
		2117	double_data[3] = double_data[12]*double_data[2] + double_data[13];
		2118	}
10953	bpr	2119	}
15111	schaersvoo	2120	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		2121	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		2122	if(use_affine == TRUE ){ transform(4,2);}
		2123	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,18,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2124	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2125	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,18,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2126	add_to_buffer(tmp_buffer);
		2127	if(onclick != 0){object_cnt++;}
		2128	/* object_cnt++; */
8379	schaersvoo	2129	reset();
8244	schaersvoo	2130	break;
		2131	}
		2132	}
15111	schaersvoo	2133	dragstuff[18] = 1;
		2134	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8244	schaersvoo	2135	break;
8386	schaersvoo	2136
8365	schaersvoo	2137	case HALFLINES:
		2138	/*
		2139	@ demilines color,x1,y1,x2,y2,....
15715	schaersvoo	2140	@ alternative: halflines
15111	schaersvoo	2141	@ draws halflines starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex) etc
9406	schaersvoo	2142	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> indiviually
12110	schaersvoo	2143	@%halflines%size 400,400%xrange -10,10%yrange -10,10%halflines red,-5,5,0,0,-5,-5,0,0
8365	schaersvoo	2144	*/
		2145	stroke_color=get_color(infile,0);
		2146	fill_color = stroke_color;
		2147	i=0;
		2148	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	2149	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8365	schaersvoo	2150	if(i%2 == 0 ){
		2151	double_data[i] = get_real(infile,0); /* x */
		2152	}
		2153	else
		2154	{
		2155	double_data[i] = get_real(infile,1); /* y */
		2156	}
		2157	i++;
		2158	}
15111	schaersvoo	2159	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8365	schaersvoo	2160	decimals = find_number_of_digits(precision);
		2161	for(c = 0 ; c < i-1 ; c = c+4){
		2162	if( double_data[c] == double_data[c+2] ){ /* vertical line*/
		2163	if(double_data[c+1] < double_data[c+3]){ /* upright halfline */
		2164	double_data[c+3] = ymax + 1000;
		2165	}
		2166	else
		2167	{
		2168	double_data[c+3] = ymin - 1000;/* descending halfline */
		2169	}
		2170	}
		2171	else
		2172	{
		2173	if( double_data[c+1] == double_data[c+3] ){ /* horizontal line */
		2174	if(double_data[c] < double_data[c+2] ){ /* halfline to the right */
		2175	double_data[c+2] = xmax+100;
		2176	}
		2177	else
		2178	{
		2179	double_data[c+2] = xmin-1000; /* halfline to the right */
		2180	}
		2181	}
		2182	else
		2183	{
		2184	/* m */
		2185	double m = (double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]);
		2186	/* q */
		2187	double q = double_data[c+1] - ((double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]))*double_data[c];
		2188	if(double_data[c] < double_data[c+2]){ /* to the right */
14071	bpr	2189	double_data[c+2] = xmax+1000; /* 1000 is needed for dragging...otherwise it is just segment */
8365	schaersvoo	2190	double_data[c+3] = (m)*(double_data[c+2])+(q);
		2191	}
		2192	else
		2193	{ /* to the left */
		2194	double_data[c+2] = xmin - 1000;
		2195	double_data[c+3] = (m)*(double_data[c+2])+(q);
		2196	}
		2197	}
		2198	}
15111	schaersvoo	2199	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		2200	if(use_affine == TRUE ){ transform(i-1,2);}
		2201	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,18,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2202	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2203	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,18,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2204	add_to_buffer(tmp_buffer);
		2205	if(onclick != 0){object_cnt++;}/* object_cnt++; */
8365	schaersvoo	2206	}
		2207	reset();
15111	schaersvoo	2208	dragstuff[18] = 1;
		2209	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8365	schaersvoo	2210	break;
11806	schaersvoo	2211	case HATCHFILL:
		2212	/*
		2213	@ hatchfill x0,y0,dx,dy,color
		2214	@ x0,y0 in xrange / yrange
		2215	@ distances dx,dy in pixels
13936	bpr	2216	@ there is also a command <a href="#userdraw">userdraw hatchfill,color</a>
12110	schaersvoo	2217	@%hatchfill%size 400,400%xrange -10,10%yrange -10,10%canvastype 100%linewidth 2%precision 1000%jsplot blue,5*sin(x)%opacity 200,50%hatchfill 6,6,10,10,blue%hatchfill 6,-6,6,6,red
11806	schaersvoo	2218	*/
15111	schaersvoo	2219	js_function[DRAW_HATCHFILL] = 1;
11820	schaersvoo	2220	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		2221	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	2222	add_js_filltoborder(canvas_type);
11820	schaersvoo	2223	}
		2224	decimals = find_number_of_digits(precision);
11806	schaersvoo	2225	for(i=0;i<5;i++){
		2226	switch(i){
11820	schaersvoo	2227	case 0: double_data[0] = get_real(infile,0); break; /* x */
		2228	case 1: double_data[1] = get_real(infile,0); break; /* y */
		2229	case 2: int_data[0] = (int) (get_real(infile,0)); break; /* dx pixel */
		2230	case 3: int_data[1] = (int) (get_real(infile,0)); break; /* dy pixel*/
11806	schaersvoo	2231	case 4: stroke_color = get_color(infile,1);
15111	schaersvoo	2232	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		2233	if(use_affine == TRUE ){ transform(2,2);}
11806	schaersvoo	2234	/* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
14208	schaersvoo	2235	string_length = 1 + snprintf(NULL,0, "draw_hatchfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
		2236	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11820	schaersvoo	2237	snprintf(tmp_buffer,string_length,"draw_hatchfill(%d,%.f,%.f,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],line_width,stroke_color,stroke_opacity,xsize,ysize);
11806	schaersvoo	2238	add_to_buffer(tmp_buffer);
11820	schaersvoo	2239	fill_cnt++;
15111	schaersvoo	2240	reset();
11806	schaersvoo	2241	break;
		2242	default:break;
		2243	}
		2244	}
		2245	break;
8386	schaersvoo	2246
8224	bpr	2247	case HLINE:
7614	schaersvoo	2248	/*
		2249	@ hline x,y,color
15715	schaersvoo	2250	@ alternative: horizontalline
15111	schaersvoo	2251	@ draw a horizontal line through point (x:y) in color 'color'
		2252	@ or use command <a href='#curve'>curve color,formula</a> to draw the line (uses more points to draw the line; is however better draggable)
9406	schaersvoo	2253	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12110	schaersvoo	2254	@%hline%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%hline 0,0,red%dhline 0,5,blue
7614	schaersvoo	2255	*/
		2256	for(i=0;i<3;i++) {
		2257	switch(i){
		2258	case 0: double_data[0] = get_real(infile,0);break; /* x-values */
		2259	case 1: double_data[1] = get_real(infile,0);break; /* y-values */
		2260	case 2: stroke_color = get_color(infile,1);/* name or hex color */
		2261	double_data[3] = double_data[1];
15111	schaersvoo	2262	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		2263	if(use_affine == TRUE ){ transform(2,2);}
		2264	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
7614	schaersvoo	2265	decimals = find_number_of_digits(precision);
15111	schaersvoo	2266	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,100xmin,decimals,100xmax,decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2267	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2268	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,100xmin,decimals,100xmax,decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2269	add_to_buffer(tmp_buffer);
		2270	if(onclick != 0){object_cnt++;}/* object_cnt++; */
		2271	dragstuff[4] = 1;
		2272	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8379	schaersvoo	2273	reset();
7614	schaersvoo	2274	break;
		2275	}
		2276	}
		2277	break;
8366	schaersvoo	2278
		2279	case HLINES:
		2280	/*
		2281	@ hlines color,x1,y1,x2,y2,...
15715	schaersvoo	2282	@ alternative: horizontallines
15111	schaersvoo	2283	@ draw horizontal lines through points (x1:y1)...(xn:yn) in color 'color'
9406	schaersvoo	2284	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
12110	schaersvoo	2285	@%hlines%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%hlines red,0,0,0,5,0,-5
8366	schaersvoo	2286	*/
		2287	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		2288	fill_color = stroke_color;
		2289	i=0;
		2290	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	2291	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8366	schaersvoo	2292	if(i%2 == 0 ){
		2293	double_data[i] = get_real(infile,0); /* x */
		2294	}
		2295	else
		2296	{
		2297	double_data[i] = get_real(infile,1); /* y */
		2298	}
		2299	i++;
		2300	}
15111	schaersvoo	2301	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		2302	if(use_affine == TRUE ){ transform(i-1,2);}
		2303	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		2304
8366	schaersvoo	2305	decimals = find_number_of_digits(precision);
		2306	for(c = 0 ; c < i-1 ; c = c+2){
15111	schaersvoo	2307	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,xmin,decimals,xmax,decimals,double_data[c+1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2308	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2309	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,xmin,decimals,xmax,decimals,double_data[c+1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2310	add_to_buffer(tmp_buffer);
		2311	if(onclick != 0){object_cnt++;}/* object_cnt++; */
8366	schaersvoo	2312	}
		2313	reset();
15111	schaersvoo	2314	dragstuff[4] = 1;
		2315	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8366	schaersvoo	2316	break;
11806	schaersvoo	2317	case HTTP:
7614	schaersvoo	2318	/*
11806	schaersvoo	2319	@ http x1,y1,x2,y2,http://some_adress.com
14078	bpr	2320	@ an active html-page will be displayed in an "iframe" rectangle left top (x1:y1), right bottom (x2:y2)
11806	schaersvoo	2321	@ do not use interactivity (or mouse) if the mouse needs to be active in the iframe
14071	bpr	2322	@ can <b>not</b> be ''set onclick`` or ''drag xy``
12110	schaersvoo	2323	@%http%size 400,400%xrange -10,10%yrange -10,10%http 0,10,10,0,http://wims.unice.fr%opacity 200,50%drag xy%fcircle 0,0,100,green
7614	schaersvoo	2324	*/
15111	schaersvoo	2325	js_function[DRAW_HTTP] = 1;
11806	schaersvoo	2326	for(i=0;i<5;i++){
7614	schaersvoo	2327	switch(i){
11806	schaersvoo	2328	case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
14032	schaersvoo	2329	case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system -> pixel height */
11806	schaersvoo	2330	case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
		2331	case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system -> pixel height */
		2332	case 4: decimals = find_number_of_digits(precision);
		2333	temp = get_string(infile,1);
		2334	if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
14208	schaersvoo	2335	string_length = 1 + snprintf(NULL,0,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
11806	schaersvoo	2336	check_string_length(string_length);tmp_buffer = my_newmem(string_length+2);
		2337	snprintf(tmp_buffer,string_length,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
		2338	add_to_buffer(tmp_buffer);
7614	schaersvoo	2339	break;
		2340	}
		2341	}
11806	schaersvoo	2342	reset();
7614	schaersvoo	2343	break;
11806	schaersvoo	2344	case HTML:
8366	schaersvoo	2345	/*
15111	schaersvoo	2346	@ html x1,y1,html_string
14071	bpr	2347	@ all tags are allowed, html code using inputfields could be read using your own javascript code. Do not use ids like 'canvas_input0' etc.
15111	schaersvoo	2348	@ can be set <a href='#onclick'>onclick</a> and <a href='#drag'>drag&drop</a>
		2349	@ command <a href='#affine'>affine</a> will produce CSS3 matrix transformations
		2350	@ command <a href='#rotate'>rotate</a> will rotate the object
14038	schaersvoo	2351	@ use keyword <a href='#centered'>centered</a> to center the html object on (x1:y1)
15111	schaersvoo	2352	@ note: using drag&drop for all external P,SPAN,DIV,IMG,SVG-images onto a canvasdraw element, use ''onclick=javascript:place_image_on_canvas(this.id)``
16707	schaersvoo	2353	@ note: sub & sup are supported in command family <a href='#string'>string</a>, e.g. real internal canvas objects !
15629	bpr	2354	@%html-text%size 500,500%xrange -10,10%yrange -10,10%drag xy%centered%fillcolor lightblue%html 2,2,<h1 style='color:red'>DRAG ME</h1> %opacity 200,50%drag xy%fcircle 0,0,100,green
17351	bpr	2355	@%html-image-slider%size 500,500%xrange -10,10%yrange -10,10%fontsize 42%rotationcenter 0,0%centered%html 0,0,<img src="http://85.148.206.56/gifs/can1.gif">%slider 0,pi,400,40,angle active degree, %centered%html 0,0,<img src="http://85.148.206.56/gifs/can2.gif">
8366	schaersvoo	2356	*/
15111	schaersvoo	2357	js_function[DRAW_XML] = 1;
11806	schaersvoo	2358	for(i=0;i<5;i++){
		2359	switch(i){
15111	schaersvoo	2360	case 0: double_data[0] = get_real(infile,0);break;
		2361	case 1: double_data[1] = get_real(infile,0);break;
11806	schaersvoo	2362	case 4: decimals = find_number_of_digits(precision);
15111	schaersvoo	2363	if(use_affine == TRUE ){ transform(2,2);}/* needs double_data[] */
		2364	if( use_offset != 0 \|\| drag_type != -1 ){int_data[2] = 1;}else{int_data[2] = 0;} /* only centered or not-centered */
		2365	int_data[0] = x2px(double_data[0]);/* needs px */
		2366	int_data[1] = y2px(double_data[1]);
		2367	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
15116	bpr	2368	if( use_slider != -1 && drag_type != -1){ onclick = 5; }
11806	schaersvoo	2369	temp = get_string(infile,1);
15111	schaersvoo	2370	if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","\\\""); }
		2371	if( strstr(temp,"<img ")!= 0){URL="image";}else{URL="html";}
		2372	string_length = 1 + snprintf(NULL,0,"var draw_xml%d = {id:%d,type:'%s',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};slidergroup[%d] = null;draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,URL,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,object_cnt,drawxml_cnt);
14208	schaersvoo	2373	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	2374	snprintf(tmp_buffer,string_length, "var draw_xml%d = {id:%d,type:'%s',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};slidergroup[%d] = null;draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,URL,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,object_cnt,drawxml_cnt);
11806	schaersvoo	2375	add_to_buffer(tmp_buffer);
15111	schaersvoo	2376	if(onclick != 0 ){object_cnt++;}
		2377	drawxml_cnt++;/* keeps track on imported img,div,p,span,mathml,svg */
11806	schaersvoo	2378	break;
		2379	default:break;
8366	schaersvoo	2380	}
		2381	}
15111	schaersvoo	2382	reset();
8366	schaersvoo	2383	break;
8386	schaersvoo	2384
11806	schaersvoo	2385	case IMAGEFILL:
7614	schaersvoo	2386	/*
11996	schaersvoo	2387	@ imagefill x,y,scaling to xsize × ysize?,image_url
11874	schaersvoo	2388	@ The next suitable <b>filled object</b> will be filled with "image_url" tiled
		2389	@ scaling to xsize × ysize ? ... 1 = yes 0 = no
14078	bpr	2390	@ After pattern filling, the fill-color should be reset !
14066	bpr	2391	@ wims getins / image from class directory: imagefill 80,80,my_image.gif
15111	schaersvoo	2392	@ normal url: imagefill 80,80,0,$module_dir/gifs/my_image.gif
14066	bpr	2393	@ normal url: imagefill 80,80,1,http://adres/a/b/c/my_image.jpg
11874	schaersvoo	2394	@ if dx,dy is larger than the image, the whole image will be background to the next object.
13967	schaersvoo	2395	@%imagefill_tile%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%circles blue,0,0,5,3,2,5%imagefill 1.5,1.5,0,gifs/en.gif%imagefill -5,5,0,gifs/logo/wimsedu.png
		2396	@%imagefill_scale%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%circles blue,0,0,5,3,2,5%imagefill 1.5,1.5,1,gifs/en.gif%imagefill -5,5,1,gifs/logo/wimsedu.png
7614	schaersvoo	2397	*/
15111	schaersvoo	2398	js_function[DRAW_IMAGEFILL] = 1;
11854	schaersvoo	2399	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		2400	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	2401	add_js_filltoborder(canvas_type);
11854	schaersvoo	2402	}
11874	schaersvoo	2403	for(i=0 ;i < 4 ; i++){
7614	schaersvoo	2404	switch(i){
11806	schaersvoo	2405	case 0:int_data[0] = (int) (get_real(infile,0));break;
		2406	case 1:int_data[1] = (int) (get_real(infile,0));break;
11874	schaersvoo	2407	case 2:int_data[2] = (int) (get_real(infile,0));break; /* 0 \| 1 */
		2408	case 3: URL = get_string_argument(infile,1);
14208	schaersvoo	2409	string_length = 1 + snprintf(NULL,0, "draw_imagefill(%d,%d,%d,\"%s\",%d,%d,%d,%d);\n",STATIC_CANVAS+fill_cnt,int_data[0],int_data[1],URL,xsize,ysize,use_userdraw,int_data[2]);
		2410	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11874	schaersvoo	2411	snprintf(tmp_buffer,string_length,"draw_imagefill(%d,%d,%d,\"%s\",%d,%d,%d,%d);\n",STATIC_CANVAS+fill_cnt,int_data[0],int_data[1],URL,xsize,ysize,use_userdraw,int_data[2]);
11806	schaersvoo	2412	add_to_buffer(tmp_buffer);
11874	schaersvoo	2413	fill_cnt++;
11806	schaersvoo	2414	break;
7614	schaersvoo	2415	}
		2416	}
11806	schaersvoo	2417	reset();
		2418	break;
14066	bpr	2419
14038	schaersvoo	2420	case IMAGEPALETTE:
		2421	/*
		2422	@ imagepalette image1,image2,image3,...
14379	bpr	2423	@ if used before and together with command <a href='#multidraw'>multidraw images,..,..., etc</a> the image will be presented in a small table in the ''control panel``.
15313	schaersvoo	2424	@%imagepalette%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%copy 0,0,-1,-1,-1,-1,gifs/images/skull_and_crossbones50.png%fontcolor green%fontfamily Bold 42pt Arial%imagepalette gifs/ca.gif,gifs/en.gif,gifs/nl.gif,gifs/fr.gif,gifs/cn.gif,gifs/de.gif,gifs/kh.gif,gifs/it.gif%multiuserinput 0,0,1%css color:blue;%multisnaptogrid 1,1,1%multilinewidth 0,4,0%# attention: use unicode text input without the slash %# \u222D ---> u222D at least will sometimes work%# otherwise cut&past unicode symbols into inputfield...%multilabel TEXT,REACTION ARROW,FLAGS,STOP DRAWING%multidraw text,arrow,images
14038	schaersvoo	2425	*/
		2426	temp = get_string(infile,1);
		2427	temp = str_replace(temp,",","\",\"");
		2428	if( use_tooltip == 1 ){canvas_error("command 'imagepalette' is incompatible with command 'intooltip tip_text',as they use the same div-element ");}
		2429	fprintf(js_include_file,"\nvar current_id;var imagepalette = [\" %s \"];\n",temp);
		2430	break;
14066	bpr	2431
11806	schaersvoo	2432	case INPUT:
		2433	/*
		2434	@ input x,y,size,editable,value
		2435	@ to set inputfield "readonly", use editable = 0
15111	schaersvoo	2436	@ if no preset 'value' is needed...use a 'space' as last item argument
11806	schaersvoo	2437	@ only active inputfields (editable = 1) will be read with read_canvas();
17351	bpr	2438	@ if ''$status=done`` (e.g. in answer.phtml) the inputfield will be cleared and set readonly<br>override this by keyword <a href="#status">status</a>
15111	schaersvoo	2439	@ may be further controlled by <a href="#css">css</a>
11806	schaersvoo	2440	@ if mathml inputfields are present and / or some userdraw is performed, these data will <b>not</b> be send as well (javascript:read_canvas();)
17351	bpr	2441	@ use keyword <a href='#xoffset'>xoffset \| centered</a> if the inputfield should be centered on (x:y)<br> default is the left top corner is (x:y)
13953	schaersvoo	2442	@ if the student must place an inputfield(s) somewhere on the canvas, use command <a href="#userdraw">userdraw input,color</a> or make use of a command like <a href="#userdraw">userdraw text,color</a>
		2443	@%input%size 400,400%xrange -10,10%yrange -10,10%linewidth 6%point 1,2,red%input 1,2,5,1, ?%point -5,5,red%input -5,5,5,1, ?%point 6,-5,red%input 6,-5,5,1, ?%point -5,-8,red%input -5,-8,5,1, ?
11806	schaersvoo	2444	*/
15111	schaersvoo	2445	js_function[DRAW_INPUTS] = 1;
11806	schaersvoo	2446	for(i = 0 ; i<5;i++){
		2447	switch(i){
		2448	case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
		2449	case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
		2450	case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
		2451	case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
15260	schaersvoo	2452	case 4: temp = get_string(infile,3);
15111	schaersvoo	2453	string_length = 1 + snprintf(NULL,0, "draw_static_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d);\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],css_class,temp,use_offset);
14208	schaersvoo	2454	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	2455	snprintf(tmp_buffer,string_length,"draw_static_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d);\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],css_class,temp,use_offset);
11806	schaersvoo	2456	add_to_buffer(tmp_buffer);
		2457	input_cnt++;break;
		2458	default: break;
		2459	}
		2460	}
		2461	if(reply_format == 0 ){reply_format = 15;}
		2462	reset();
		2463	break;
8386	schaersvoo	2464
11806	schaersvoo	2465	case INTOOLTIP:
		2466	/*
		2467	@ intooltip link_text
		2468	@ link_text is a single line (span-element)
15111	schaersvoo	2469	@ link_text may also be an image URL ''http://some_server/images/my_image.png`` or ''$module_dir/gifs/my_image.jpg``
11806	schaersvoo	2470	@ link_text may contain HTML markup
14071	bpr	2471	@ the canvas will be displayed in a tooltip on ''link_text``
15111	schaersvoo	2472	@ the canvas is default transparent: use command <a href="#bgcolor">bgcolor color</a> to adjust background-color, the link text will also be shown with this 'bgcolor'.
17351	bpr	2473	@ many ''userinput stuff`` will use the tooltip_placeholder_div element...only one is defined in the wims-page<br>and are therefore these commands are mutually exclusive.<br>keep this in mind...
		2474	@%intooltip%size 400,400%xrange -10,10%yrange -10,10%fontfamily Bold 42pt Courier%string black,0,0,Hello World%intooltip <span style="background-color:black;color:white;font-style:bold;font-size:48pt;">CLICK <br>HERE</span>
11806	schaersvoo	2475	*/
		2476	if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy or other commands using the tooltip-div...see documentation");}
		2477	if( use_tooltip == 1 ){ canvas_error("command 'intooltip' cannot be combined with command 'popup'...");}
		2478	tooltip_text = get_string(infile,1);
		2479	if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
		2480	use_tooltip = 1;
		2481	break;
		2482
		2483	case JSCURVE:
7614	schaersvoo	2484	/*
11893	schaersvoo	2485	@ jscurve color,formula1(x),formula2(x),formula3(x),...
15715	schaersvoo	2486	@ alternative: jsplot
11893	schaersvoo	2487	@ your function will be plotted by the javascript engine of the client browser
17351	bpr	2488	@ if <a href='trange'>trange</a> is defined, the two functions will be plotted parametric<br><b>note</b>: use <i>x</i> as variable...and not <i>t</i>. Use keyword <a href='#animate'>animate</a> to animate a point on the curve
14071	bpr	2489	@ use only basic math in your curve: <code>sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e</code>
		2490	@ use parenthesis and rawmath: use 2*x instead of 2x ; use 2^(sin(x))...etc etc (use error console to debug any errors...)
		2491	@ <b>attention</b>: last ''precision`` command in the canvasdraw script determines the calculation precision of the javascript curve plot !
11806	schaersvoo	2492	@ no validity check is done by wims.
17351	bpr	2493	@ zooming & panning are implemented:<br>use command ''zoom color`` for mouse driven zooming<br>or use keyword 'setlimits' for inputfields setting xmin/xmax, ymin/ymax
11806	schaersvoo	2494	@ zooming & panning is better than for curves produced by command <a href="#curve">curve color,formula</a> because for avery change in x/y-range the curve is recalculated in javascript
15116	bpr	2495	@ zooming & panning in case of userbased functionplot: reclick the OK button to re-plot curve onto the resized grid
11893	schaersvoo	2496	@ use keyword <a href='animate'>animate</a> for animating a point on the curve
14071	bpr	2497	@ use command ''trace_jscurve formula(x)`` for tracing
14246	bpr	2498	@ use command ''jsmath formula(x)`` for calculating and displaying indiviual points on the curve
11806	schaersvoo	2499	@ can <b>not</b> be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> (yet)
14071	bpr	2500	@ commands plotjump / plotstep are not active for ''jscurve``
11806	schaersvoo	2501	@ every command jscurve will produce a new canvas (canvastype 111,112,113...) for this one curve.
14071	bpr	2502	@ plotting multiple js-curves on the same canvas (for example if you want to use 'userdraw clickfill,color' on <a href="#canvastype">canvastype</a> number 111, use:<br/> <code>jscurve red,fun1(x),fun2(x)...fun_n(x)</code>, you must specify individual multistrokecolors & multistrokeopacity & multilinewidth for these multiple js-curves to use different colors. Otherwise all curves will be the same color... Use commands like: <a href="#multistrokecolors">multistrokecolors</a>, <a href="#multilinewidth">multilinewidth</a>, <a href="#multidash">multidash</a>, <a href="#multistrokeopacity">multistroke</a>, <b>color</b> given for the command <code>jscurve color,formulas(x)</code> will not be used in that case... but the color argument must still be given in any case (otherwise syntax error...)
14622	schaersvoo	2503	@%jscurve%size 400,400%xrange -10,10%yrange -10,10%multistrokecolors red,green,blue,orange%multilinewidth 1,2,3%multistrokeopacity 0.5,0.8,1.0%jscurve red,sin(x),1/sin(x),sin(x^2)
11806	schaersvoo	2504	*/
15111	schaersvoo	2505	jsplot_cnt++;/* -1 --> 0 */
11806	schaersvoo	2506	stroke_color = get_color(infile,0);
15111	schaersvoo	2507	js_function[JS_MATH] = 1;
		2508	js_function[JS_PLOT] = 1;
		2509	if( tmin != 0 && tmax !=0){use_parametric = TRUE;}
11806	schaersvoo	2510	temp = get_string(infile,1);
		2511	temp = str_replace(temp,",","\",\"");
15111	schaersvoo	2512	string_length = 1 + snprintf(NULL,0, "var js_plot%d = function(){jsplot(%d,[\"%s\"],[%d],[\"%s\"],[%.2f],[%d],%d,%d,[%f,%f],%d,%d,%d,0);};js_plot%d();",jsplot_cnt,JSPLOT_CANVAS+jsplot_cnt,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],tmin,tmax,plot_steps,use_parametric,use_animate,jsplot_cnt);
14208	schaersvoo	2513	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	2514	snprintf(tmp_buffer,string_length, "var js_plot%d = function(){jsplot(%d,[\"%s\"],[%d],[\"%s\"],[%.2f],[%d],%d,%d,[%f,%f],%d,%d,%d,0);};js_plot%d();",jsplot_cnt,JSPLOT_CANVAS+jsplot_cnt,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],tmin,tmax,plot_steps,use_parametric,use_animate,jsplot_cnt);
11806	schaersvoo	2515	add_to_buffer(tmp_buffer);
15111	schaersvoo	2516	fprintf(js_include_file,"if(typeof(all_jsplots) !== 'number'){var all_jsplots;};all_jsplots = %d;",jsplot_cnt);
		2517
11806	schaersvoo	2518	/* we need to create multiple canvasses, so we may zoom and pan ?? */
		2519	break;
		2520
		2521	case JSMATH:
		2522	/*
		2523	@ jsmath some_math_function
		2524	@ will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
14246	bpr	2525	@ default labels ''x`` and ''y``; the commands ''xlabel some_x_axis_name`` and ''ylabel some_y_axis_name`` will set the label for the input fields
15111	schaersvoo	2526	@ use command 'css some_css' for styling the display fields. Use command 'fontsize int' to size the labels ''x`` and ''y``
17351	bpr	2527	@ the client browser will convert your math function to javascript math.<br>use parenthesis and rawmath: use 2*x instead of 2x etc etc<br>no check is done on the validity of your function and/or syntax<br>use error console to debug any errors...
11806	schaersvoo	2528	@ be aware that the formula's of the plotted function(s) can be found in the page javascript source
12111	schaersvoo	2529	@%jsmath%size 400,400%xrange -10,10%yrange -10,10%jsplot blue,sin(x^2)%jsmath sin(x^2)
11806	schaersvoo	2530	*/
15111	schaersvoo	2531	js_function[DRAW_CROSSHAIRS] = 1;
		2532	js_function[JS_MATH] = 1;
		2533	add_calc_y(get_string(infile,1),font_size,css_class);
		2534	break;
15716	schaersvoo	2535	case KILL:
		2536	/*
		2537	@ kill arguments
		2538	@ arguments may be: affine linear translation rotation slider offset reset
		2539	@ for documentation see: killaffine,killlinear,killtranslation...
		2540	@ multiple arguments are allowed (although not checked for validity...)
		2541	*/
		2542	temp = get_string(infile,1);
		2543	if(strstr(temp,"affine") != 0 ){use_affine = FALSE;affine_matrix[0] = 1.0;affine_matrix[1] = 0.0;affine_matrix[2] = 0.0;affine_matrix[3] = 1.0;affine_matrix[4] = 0.0;affine_matrix[5] = 0.0;}
		2544	if(strstr(temp,"linear") != 0 ){affine_matrix[0] = 1.0;affine_matrix[1] = 0.0;affine_matrix[2] = 0.0;affine_matrix[3] = 1.0;}
		2545	if(strstr(temp,"translation") != 0 \|\| strstr(temp,"translate") != 0 ){affine_matrix[4] = 0.0;affine_matrix[5] = 0.0;}
		2546	if(strstr(temp,"rotation") != 0 \|\| strstr(temp,"rotate") != 0 ){use_rotate = FALSE;angle = 0.0;rotation_center="null";}
		2547	if(strstr(temp,"slider") != 0 ){slider_type = "0";my_sliders = "[-1]";last_slider = use_slider+1;}
16872	schaersvoo	2548	if(strstr(temp,"group") != 0 ){onclick = 0;drag_type = -1;slider_type = "0";my_sliders = "[-1]";last_slider = use_slider+1;use_slider = -1;reset();}
15716	schaersvoo	2549	if(strstr(temp,"reset") != 0 ){if(no_reset == FALSE){no_reset = TRUE;}else{no_reset = FALSE;reset();}}
		2550	if(strstr(temp,"offset") != 0 ){use_offset = 0;}
		2551	break;
11806	schaersvoo	2552	case KILLAFFINE:
		2553	/*
		2554	@ killaffine
14066	bpr	2555	@ keyword: resets the transformation matrix to 1,0,0,1,0,0
15633	bpr	2556	@ note: any active linear transformation will also be reset: tx=0, ty=0
11806	schaersvoo	2557	*/
15111	schaersvoo	2558	use_affine = FALSE;
		2559	affine_matrix[0] = 1.0;
		2560	affine_matrix[1] = 0.0;
		2561	affine_matrix[2] = 0.0;
		2562	affine_matrix[3] = 1.0;
		2563	affine_matrix[4] = 0.0;
		2564	affine_matrix[5] = 0.0;
11806	schaersvoo	2565	break;
15111	schaersvoo	2566	case KILLLINEAR:
		2567	/*
		2568	@ killlinear
		2569	@ keyword: resets the transformation matrix to 1,0,0,1,tx,ty
		2570	@ note:any active transformation or rotation will not be killed (tx,ty remain active)
		2571	*/
		2572	affine_matrix[0] = 1.0;
		2573	affine_matrix[1] = 0.0;
		2574	affine_matrix[2] = 0.0;
		2575	affine_matrix[3] = 1.0;
		2576	break;
11806	schaersvoo	2577
15111	schaersvoo	2578
11806	schaersvoo	2579	case KILLROTATE:
		2580	/*
14071	bpr	2581	@ killrotate
15111	schaersvoo	2582	@ will set the rotation angle to 0.
		2583	@ will also reset the command <a href="#rotationcenter">rotationcenter</a> to the first (x;y) of the next rotatable/slidable object(s) <br/>eg a following rotate command will have the first object point as rotation center
11806	schaersvoo	2584	@ if not set, the rotation center will remain unchanged
15111	schaersvoo	2585	@ note:any active transformation or linear will not be killed (e.g an active transformation matrix remains active)
15116	bpr	2586	@%killrotate%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%rotationcenter 0,0%# slider is active for all following objects until 'killslider'%slider -10,10,300,40,angle degree,Rotate%drag xy%# after dragging the object must be clicked to re-activate the slider%linewidth 4%arrow 0,0,6,0,9,blue%%# reset rotation center to the first (x,y) of the next object/arrow...%killrotate%drag xy%# after dragging the object must be clicked to re-activate the slider%arrow 0,0,6,1,9,red
11806	schaersvoo	2587	*/
15111	schaersvoo	2588	use_rotate = FALSE;
14549	schaersvoo	2589	angle = 0.0;
15111	schaersvoo	2590	rotation_center="null";
11806	schaersvoo	2591	break;
		2592
		2593	case KILLSLIDER:
		2594	/*
		2595	@ killslider
		2596	@ keyword (no arguments required)
		2597	@ ends grouping of object under a previously defined slider
		2598	*/
14208	schaersvoo	2599	slider_type = "0";
15111	schaersvoo	2600	my_sliders = "[-1]";
		2601	last_slider = use_slider+1;
11806	schaersvoo	2602	break;
		2603
		2604	case KILLTRANSLATION:
		2605	/*
15116	bpr	2606	@ killtranslation
15715	schaersvoo	2607	@ alternative: killtranslate
15111	schaersvoo	2608	@ note: a active linear or affine transformation will not be 100% reset...only tx=0,ty=0
		2609	@ resets the translation matrix a,b,c,d,tx,ty to a,b,c,d,0,0
11806	schaersvoo	2610	*/
15111	schaersvoo	2611	affine_matrix[4] = 0.0;
		2612	affine_matrix[5] = 0.0;
11806	schaersvoo	2613	break;
15757	schaersvoo	2614
14225	schaersvoo	2615	case LATEX:
		2616	/*
15111	schaersvoo	2617	@ latex x,y,tex string
15715	schaersvoo	2618	@ alternative: math
17351	bpr	2619	@ note: <b>for a single greek letter</b> ,please be smart and use a command like <a href='#string'>string</a> along with <b>unicode</b> !! <br>possibly together with command <a href="#xyoffset">xoffset, yoffset or xyoffset</a><br/> See <a target='new' href='https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode'>https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode</a><br/> See <a target='new' href='https://en.wikipedia.org/wiki/Greek_script_in_Unicode'>https://en.wikipedia.org/wiki/Greek_script_in_Unicode</a>
15111	schaersvoo	2620	@ you may also use command <a href="#mathml">mathml</a> for xml strings generated with wims commmand ''mathmlmath`` (will not work on KaTeX enabled WIMS)
15633	bpr	2621	@ transformation commands <a href='#affine'>affine</a>, <a href='#translation'>translation</a> and <a href='#rotate'>rotate</a> are supported.(onclick and drag will work)
17351	bpr	2622	@ can be set onclick: <code>javascript:read_dragdrop();</code> will return click numbers of mathml-objects<br>if 4 clickable object are drawn, the reply could be 1,0,1,0 ... meaning clicked on the first and third object
15111	schaersvoo	2623	@ can be set draggable:<code>javascript:read_dragdrop();</code> will return all coordinates in the same order as the canvas script: unmoved object will have their original coordinates...
		2624	@ can be moved/rotated with command <a href='#slider'>slider</a>
		2625	@ snaptogrid is supported
		2626	@ when clicked, the colour of the 'div background' of the 'mathobject' will be determined by the <a href="#fillcolor">fillcolor</a> and <a href="#opacity">opacity</a> settings
		2627	@ userdraw may be combined with 'latex' ; the js-function 'read_canvas()' will contain the coordinates of the drawing.
		2628	@ userdraw may be combined; the read_canvas() will contain the drawing.
		2629	@ draggable or onclick 'external images' from command <a href='#copyresized'>copy or copyresized</a> and all objects from commands <a href='#html'>html</a> or <a href='#obabel'>obabel</a> can be combined with drag and/or onclick mathml
14230	schaersvoo	2630	@ other drag objects (circles/rects etc) are supported, but read_dragdrop() will probably be difficult to interpret...
17351	bpr	2631	@ if inputfields are incorporated in mathml (with id's: id='mathml0',id='mathml1',...id='mathml_n')<br>the user_input values will be read by <code>javascript:read_mathml();</code>. <b>attention</b>: if after this mathml-input object other user-interactions are included, these will read mathml too using "read_canvas();"
14379	bpr	2632	@ If other inputfields (command input / command textarea) or userdraw are performed, the function read_canvas() will not read mathml. Use some generic function to read it....
17351	bpr	2633	@ use keyword <a href='#centered'>centered</a> to center the katex div object on (x1:y1) <br>this may not work as expected for MathJaX [TO BE TESTED]
		2634	@ note: if you want to include external TeX via drag&drop onto a canvasdraw element, use \\mmlid{integer} in the tex-command:''!insmath \\mmlid{1}\\frac{1}{\pi}``<br> (if your wims_mathml does not support it...use <a href="http://85.148.206.56/wims/download/Mathml.tar.gz">this version...</a>)
15111	schaersvoo	2635	@ note: the same is true for all external P,SPAN,DIV,IMG,SVG-images via drag&drop onto a canvasdraw element, use ''onclick=javascript:place_image_on_canvas(this.id)``
		2636	@%latex_drag%size 400,400%xrange -10,10%yrange -10,10%grid 2,2,grey%strokecolor red%drag xy%centered%latex -6,5,\\frac{1}{2}+ \\frac{\\pi}{2}%strokecolor blue%drag xy%centered%latex -3,5,\\frac{1}{3}+ \\frac{\\pi}{3}%strokecolor green%drag xy%centered%latex 0,5,\\frac{1}{4}+ \\frac{\\pi}{4}%strokecolor orange%drag xy%fontfamily 26px Times%centered%latex 3,5,\\frac{1}{5}+ \\frac{\\pi}{6}
17351	bpr	2637	@%latex%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 3%vline 0,0,green%hline 0,0,green%fontfamily 16px Arial%fillcolor orange%strokecolor blue%linewidth 2%slider 0,4*pi,400,40,angle degree active, %centered%latex 0,0,\\frac{12345}{23456} \\times \\frac{12345}{23456}%translate 4,4%centered%rotate 180%drag xy%html 0,0,<table><tr><th>HTML TABLE</th></tr><tr><th><a href="https://wimsedu.info/">WIMS EDU </a> </th></tr><tr><td><img src="gifs/en.gif"></tr><tr><td><img src="gifs/nl.gif"></tr><tr><td><img src="gifs/fr.gif"></tr><tr><td><img src="gifs/cn.gif"></tr><tr><td><img src="gifs/it.gif"></tr></table>%userdraw arrow2,red
14225	schaersvoo	2638	*/
15111	schaersvoo	2639	js_function[DRAW_XML] = 1;
15757	schaersvoo	2640	for(i=0;i<3;i++){
14225	schaersvoo	2641	switch(i){
15111	schaersvoo	2642	case 0: double_data[0]=get_real(infile,0);break; /* x in x/y-range coord system -> pixel width */
		2643	case 1: double_data[1]=get_real(infile,0);break; /* y in x/y-range coord system -> pixel height */
14225	schaersvoo	2644	case 2: decimals = find_number_of_digits(precision);
15757	schaersvoo	2645	temp = get_string(infile,1);
		2646	if(use_affine == TRUE ){ transform(2,2);}/* slider will use css-rotate transformation */
15111	schaersvoo	2647	if( use_offset != 0 \|\| drag_type != -1 ){int_data[2] = 1;}else{int_data[2] = 0;} /* only centered or not-centered */
		2648	int_data[0] = x2px(double_data[0]);
		2649	int_data[1] = y2px(double_data[1]);
16882	schaersvoo	2650	if( use_slider != -1 && onclick == 0 ){ onclick = 5;}
15116	bpr	2651	if( use_slider != -1 && drag_type != -1){ onclick = 5; }
15757	schaersvoo	2652	#ifdef KATEX_INSTALLED
		2653	if( strstr(temp,"\\") != 0 ){ temp = str_replace(temp,"\\","\\\\"); }
16613	schaersvoo	2654	if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
16882	schaersvoo	2655	string_length = 1 + snprintf(NULL,0,"var draw_xml%d = {id:%d,type:'katex',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,drawxml_cnt);
15757	schaersvoo	2656	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
16882	schaersvoo	2657	snprintf(tmp_buffer,string_length, "var draw_xml%d = {id:%d,type:'katex',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,drawxml_cnt);
15757	schaersvoo	2658	#else
15111	schaersvoo	2659	temp = getMML(temp);/* generate MathML for Firefox or MathJaX */
		2660	if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
16882	schaersvoo	2661	string_length = 1 + snprintf(NULL,0,"var draw_xml%d = {id:%d,type:'mathml',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,drawxml_cnt);
15111	schaersvoo	2662	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
16882	schaersvoo	2663	snprintf(tmp_buffer,string_length, "var draw_xml%d = {id:%d,type:'mathml',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,drawxml_cnt);
15757	schaersvoo	2664	#endif
15111	schaersvoo	2665	add_to_buffer(tmp_buffer);
		2666	if(onclick != 0 ){object_cnt++;}
		2667	drawxml_cnt++;/* keeps track on imported img,div,p,span,mathml,svg */
		2668	break;
14225	schaersvoo	2669	default:break;
		2670	}
		2671	}
15111	schaersvoo	2672	reset();
14225	schaersvoo	2673	break;
14230	schaersvoo	2674	case LATTICE:
		2675	/*
		2676	@ lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
		2677	@ can <b>not</b> be set ''onclick`` or ''drag xy``
		2678	@%lattice%size 400,400%xrange -10,10%yrange -10,10%fillcolor red%linewidth 2%lattice -10,-10,0,1,1,1,10,10,red%fillcolor blue%lattice 10,-10,0,1,-1,1,10,10,blue
		2679	*/
15111	schaersvoo	2680	js_function[DRAW_LATTICE] = 1;
14230	schaersvoo	2681	for( i = 0; i<9; i++){
		2682	switch(i){
		2683	case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values -> x-pixels*/
		2684	case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values -> y-pixels*/
		2685	case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values -> x-pixels*/
		2686	case 3: int_data[3] = (int) -1(get_real(infile,0));break; / y1-values -> y-pixels*/
		2687	case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values -> x-pixels*/
		2688	case 5: int_data[5] = (int) -1(get_real(infile,0));break; / y2-values -> y-pixels*/
		2689	case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
		2690	case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
		2691	case 8: stroke_color=get_color(infile,1);
		2692	decimals = find_number_of_digits(precision);
15111	schaersvoo	2693	string_length = 1 + snprintf(NULL,0,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d); ",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_filled);
14230	schaersvoo	2694	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	2695	snprintf(tmp_buffer,string_length,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d); ",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_filled);
14230	schaersvoo	2696	add_to_buffer(tmp_buffer);break;
		2697	default:break;
		2698	}
		2699	}
		2700	reset();
		2701	break;
15111	schaersvoo	2702	case LINEAR:
		2703	/*
		2704	@ linear a,b,c,d
		2705	@ defines a transformation matrix for subsequent objects
		2706	@ use keyword <a href='#killlinear'>killlinear</a> to end the transformation...the next objects will be drawn in the original x/y-range
		2707	@ a: Scales the drawings horizontally
		2708	@ b: Skews the drawings horizontally
		2709	@ c: Skews the drawings vertically
		2710	@ d: Scales the drawings vertically
		2711	@ the data precision may be set by preceding command ''precision int``
		2712	@ note: any active translation (tx,ty) is not changed
15309	schaersvoo	2713	@%linear%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%fcircle 5,5,40,blue%linear 0.2,0,0,0.2%fcircle 5,5,40,green
15111	schaersvoo	2714	*/
		2715	for(i = 0 ; i<4;i++){
		2716	switch(i){
		2717	case 0: affine_matrix[0] = get_real(infile,0);break;
		2718	case 1: affine_matrix[1] = get_real(infile,0);break;
		2719	case 2: affine_matrix[2] = get_real(infile,0);break;
		2720	case 3: affine_matrix[3] = get_real(infile,1);
		2721	affine_matrix[4] = 0;affine_matrix[5] = 0;
		2722	use_affine = TRUE;
		2723	break;
		2724	default: break;
		2725	}
		2726	}
		2727	reset();
		2728	break;
14230	schaersvoo	2729
11806	schaersvoo	2730	case LINE:
		2731	/*
		2732	@ line x1,y1,x2,y2,color
14379	bpr	2733	@ draw a line through points (x1:y1)--(x2:y2) in color ''color``
15111	schaersvoo	2734	@ or use command ''curve color,formula`` to draw the line (uses more points to draw the line; is however better draggable)
9406	schaersvoo	2735	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	2736	@%line%size 400,400%xrange -10,10%yrange -10,10%line 0,1,2,-1,green
7614	schaersvoo	2737	*/
8386	schaersvoo	2738	for(i=0;i<5;i++){
7614	schaersvoo	2739	switch(i){
11806	schaersvoo	2740	case 0: double_data[10]= get_real(infile,0);break; /* x-values */
		2741	case 1: double_data[11]= get_real(infile,0);break; /* y-values */
		2742	case 2: double_data[12]= get_real(infile,0);break; /* x-values */
		2743	case 3: double_data[13]= get_real(infile,0);break; /* y-values */
		2744	case 4: stroke_color=get_color(infile,1);/* name or hex color */
		2745	if( double_data[10] == double_data[12] ){ /* vertical line*/
		2746	double_data[1] = xmin;
		2747	double_data[3] = ymax;
		2748	double_data[0] = double_data[10];
		2749	double_data[2] = double_data[10];
		2750	}
		2751	else
		2752	{
		2753	if( double_data[11] == double_data[13] ){ /* horizontal line */
		2754	double_data[1] = double_data[11];
		2755	double_data[3] = double_data[11];
		2756	double_data[0] = ymin;
		2757	double_data[2] = xmax;
		2758	}
		2759	else
		2760	{
		2761	/* m */
		2762	double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
		2763	/* q */
		2764	double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
		2765
		2766	/xmin,mxmin+q,xmax,mxmax+q/
		2767
		2768	double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
		2769	double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
		2770	double_data[0] = xmin;
		2771	double_data[2] = xmax;
		2772	}
		2773	}
15111	schaersvoo	2774	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		2775	if(use_affine == TRUE ){ transform(4,2);}
		2776	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		2777
11806	schaersvoo	2778	decimals = find_number_of_digits(precision);
15111	schaersvoo	2779	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2780	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2781	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2782	add_to_buffer(tmp_buffer);
		2783	if(onclick != 0){object_cnt++;}
		2784	/* object_cnt++;*/
11806	schaersvoo	2785	reset();
		2786	break;
7614	schaersvoo	2787	}
		2788	}
15111	schaersvoo	2789	dragstuff[4] = 1;
		2790	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	2791	break;
8386	schaersvoo	2792
11806	schaersvoo	2793	case LINES:
8370	schaersvoo	2794	/*
11806	schaersvoo	2795	@ lines color,x1,y1,x2,y2...x_n-1,y_n-1,x_n,y_n
15111	schaersvoo	2796	@ draw multiple lines through points (x1:y1)--(x2:y2) ...(x_n-1:y_n-1)--(x_n:y_n) in color 'color'
17351	bpr	2797	@ or use multiple commands ''curve color,formula`` or ''jscurve color,formule`` to draw the line <br>(uses more points to draw the line; is however better draggable)
11806	schaersvoo	2798	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
14071	bpr	2799	@ <b>attention</b>: the flydraw command ''lines`` is equivalent to canvasdraw command <a href="#polyline">polyline</a>
12107	schaersvoo	2800	@%lines%size 400,400%xrange -10,10%yrange -10,10%lines green,0,1,1,3,0,0,1,3,0,0,-2,1
8370	schaersvoo	2801	*/
		2802	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		2803	fill_color = stroke_color;
		2804	i=0;
		2805	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	2806	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8370	schaersvoo	2807	if(i%2 == 0 ){
		2808	double_data[i] = get_real(infile,0); /* x */
		2809	}
		2810	else
		2811	{
		2812	double_data[i] = get_real(infile,1); /* y */
		2813	}
		2814	i++;
		2815	}
		2816	decimals = find_number_of_digits(precision);
15111	schaersvoo	2817	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8370	schaersvoo	2818	for(c = 0 ; c < i-1 ; c = c+4){
11806	schaersvoo	2819	if( double_data[c] == double_data[c+2] ){ /* vertical line*/
		2820	double_data[c+1] = xmin;
		2821	double_data[c+3] = ymax;
		2822	double_data[c+2] = double_data[c];
		2823	}
		2824	else
		2825	{
		2826	if( double_data[c+1] == double_data[c+3] ){ /* horizontal line */
		2827	double_data[c+3] = double_data[c+1];
		2828	double_data[c] = ymin;
		2829	double_data[c+2] = xmax;
		2830	}
		2831	else
		2832	{
		2833	/* m */
		2834	double m = (double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]);
		2835	/* q */
		2836	double q = double_data[c+1] - ((double_data[c+3] - double_data[c+1]) /(double_data[c+2] - double_data[c]))*double_data[c];
		2837	/xmin,mxmin+q,xmax,mxmax+q/
		2838	double_data[c+1] = (m)*(xmin)+(q);
		2839	double_data[c+3] = (m)*(xmax)+(q);
		2840	double_data[c] = xmin;
		2841	double_data[c+2] = xmax;
		2842	}
		2843	}
15111	schaersvoo	2844	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		2845	if(use_affine == TRUE ){ transform(i-1,2);}
		2846
		2847	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2848	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2849	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2850	add_to_buffer(tmp_buffer);
		2851	if(onclick != 0){object_cnt++;}
		2852	/* object_cnt++; */
8370	schaersvoo	2853	}
15111	schaersvoo	2854	dragstuff[4] = 1;
		2855	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8370	schaersvoo	2856	reset();
		2857	break;
8386	schaersvoo	2858
11806	schaersvoo	2859
		2860	case LINEWIDTH:
7614	schaersvoo	2861	/*
11806	schaersvoo	2862	@ linewidth int
		2863	@ default 1
12107	schaersvoo	2864	@%linewidth%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%line -5,-5,-5,5,red%linewidth 2%line -4,-5,-4,5,green%linewidth 3%line -3,-5,-3,5,blue%linewidth 4%line -2,-5,-2,5,orange%linewidth 1%line -1,-5,-1,5,brown%linewidth 5%line 1,-5,1,5,cyan%linewidth 6%line 3,-5,3,5,purple%linewidth 7%line 5,-5,5,5,black
7614	schaersvoo	2865	*/
11806	schaersvoo	2866	line_width = (int) (get_real(infile,1));
		2867	break;
		2868
		2869	case LEVELCURVE:
8363	schaersvoo	2870	/*
11806	schaersvoo	2871	@ levelcurve color,expression in x/y,l1,l2,...
15111	schaersvoo	2872	@ draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
17351	bpr	2873	@ the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br>(choose flydraw if you want quality...)
		2874	@ every individual level curve may be set 'onclick / drag xy' <br>e.g. every single level curve (l1,l2,l3...l_n) has a unique identifier
15111	schaersvoo	2875	@ note: the arrays for holding the javascript data are limited in size
17351	bpr	2876	@ note: reduce image size if javascript data arrays get overloaded<br>(command 'plotsteps int' will not control the data size of the plot...)
12107	schaersvoo	2877	@%levelcurve%size 400,400%xrange -10,10%yrange -10,10%levelcurve red,x*y,1,2,3,4
8363	schaersvoo	2878	*/
11806	schaersvoo	2879	fill_color = get_color(infile,0);
		2880	char *fun1 = get_string_argument(infile,0);
		2881	if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
		2882	i = 0;
		2883	done = FALSE;
		2884	while( !done ){
		2885	double_data[i] = get_real(infile,1);
		2886	i++;
		2887	}
15111	schaersvoo	2888	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		2889
11806	schaersvoo	2890	for(c = 0 ; c < i; c++){
15111	schaersvoo	2891	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,16,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval_levelcurve(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,double_data[c]),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2892	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		2893	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,16,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,eval_levelcurve(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,double_data[c]),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		2894	add_to_buffer(tmp_buffer);
		2895	if(onclick != 0){object_cnt++;}
		2896	/* object_cnt++; */
11806	schaersvoo	2897	}
15111	schaersvoo	2898	dragstuff[16] = 1;
		2899	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	2900	reset();
		2901	break;
8386	schaersvoo	2902
11806	schaersvoo	2903	case LEGEND:
		2904	/*
		2905	@ legend string1:string2:string3....string_n
		2906	@ will be used to create a legend for a graph
14066	bpr	2907	@ also see command <a href='#piechart'>piechart</a>
14071	bpr	2908	@ will use the same colors per default as used in the graphs; use command <a href='#legendcolors'>legendcolors</a> to override the default
15111	schaersvoo	2909	@ use command <a href="#fontsize">fontsize</a> to adjust. (command ''fontfamily`` is not active for command ''legend``)
14066	bpr	2910	@%legend%size 400,400%xrange -10,10%yrange -10,10%bgcolor white%fontsize 16%legend legend 1:legend 2:legend 3:legend 4:this is legend 5:legend 6:another legend abc%legendcolors red:green:blue%grid 1,1,white%# note: command "grid" is mandatory%# just set grid invisible if not wanted
11806	schaersvoo	2911	*/
		2912	temp = get_string(infile,1);
		2913	if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
14066	bpr	2914	legend_cnt++; /* attention: starts with -1: it will be used in piechart etc */
11806	schaersvoo	2915	fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
		2916	break;
		2917
		2918	case LEGENDCOLORS:
		2919	/*
		2920	@ legendcolors color1:color2:color3:...:color_n
17351	bpr	2921	@ will be used to color a legend: use this command after the legend command ! e.g. <code>legend test1:test2:test3<br>legendcolors blue:red:orange</code>.
14379	bpr	2922	@ make sure the number of colors match the number of legend items
15111	schaersvoo	2923	@ command ''legend`` in case of ''piechart`` and ''barchart`` will use these colours per default (no need to specify ''legendcolors``)
13960	bpr	2924	@%legendcolors%size 400,400%xrange -10,10%yrange -10,10%fontsize 18%legend legend 1:legend 2:legend 3%legendcolors red:green:blue%grid 1,1,grey
11806	schaersvoo	2925	*/
		2926	if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
		2927	temp = get_string(infile,1);
		2928	if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
		2929	fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
		2930	break;
		2931
14078	bpr	2932	case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed', 'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
11806	schaersvoo	2933	/*
		2934	@ linegraph x1:y1:x2:y2...x_n:y_n
		2935	@ will plot your data in a graph
14066	bpr	2936	@ may <b>only</b> to be used together with command <a href='#grid'>grid</a>
		2937	@ can be used together with freestyle x-axis/y-axis texts: see commands <a href='#xaxis'>xaxis</a>,<a href='#xaxisup'>xaxisup</a> and <a href='#yaxis'>yaxis</a>
		2938	@ use command <a href='#legend'>legend</a> to provide an optional legend in right-top-corner
		2939	@ also see command <a href='#piechart'>piechart</a>
11806	schaersvoo	2940	@ multiple linegraphs may be used in a single plot
14066	bpr	2941	@ note: your arguments are not checked by canvasdraw: use your javascript console in case of trouble...
14379	bpr	2942	@ <ul><li>use command <a href='#strokecolor'>strokecolor</a> before a command ''linegraph`` to set the color of this graph</li><li>use command <a href='#linewidth'>linewidth</a> before command ''linegraph`` to set linewidth of this graph</li><li>use keyword <a href='#dashed'>dashed</a> before command ''linegraph`` to set dashing of the graph</li><li>if dashing is set, use command <a href='#dashtype'>dashtype</a> before command ''linegraph`` to set the type of dashing of the (individual) graph</li></ul>
12107	schaersvoo	2943	@%linegraph%size 400,400%xrange -10,10%yrange -10,10%strokecolor red%linegraph -10:1:-5:-1:3:3:10:-5%strokecolor blue%linegraph -10:-1:-5:1:3:-3:10:5%dashed%strokecolor green%linegraph -10:2:-5:-2:3:4:10:2%grid 1,1,grey
11806	schaersvoo	2944	*/
		2945	temp = get_string(infile,1);
		2946	if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
		2947	fprintf(js_include_file,"var linegraph_%d = [\"%s\",\"%d\",\"%d\",\"%d\",\"%d\",\"%s\"];",linegraph_cnt,stroke_color,line_width,use_dashed,dashtype[0],dashtype[1],temp);
		2948	linegraph_cnt++;
		2949	reset();
		2950	break;
		2951
		2952	case MATHML:
		2953	/*
15111	schaersvoo	2954	@ mathml x1,y1,mathml_string
14230	schaersvoo	2955	@ this command is special for GECKO browsers, and it makes use of Native Mathml
15313	schaersvoo	2956	@ For general use with all browsers, use command <a href='#latex'>latex</a>
17351	bpr	2957	@ can be set <a href='onclick'>onclick</a> and <a href='drag'>drag&drop</a> <br>Note: dragging is fairly primitive dragging of the div-element, and is not done using the <em>dragstuff library</em>
15111	schaersvoo	2958	@ command <a href='#affine'>affine</a> will produce CSS3 matrix transformations
		2959	@ command <a href='#rotate'>rotate</a> will rotate the object
15315	bpr	2960	@ the mathml object is centered at (x1:y1)
14379	bpr	2961	@ the ''mathml_string`` can be produced using WIMS commands like ''texmath`` followed by ''mathmlmath``... or write correct TeX and use only ''mathmlmath``
15313	schaersvoo	2962	@ mathml will be displayed in a rectangle left top (x1:y1)
14247	bpr	2963	@ can be set onclick <code>javascript:read_dragdrop();</code> will return click numbers of mathml-objects; if 4 clickable object are drawn, the reply could be 1,0,1,0 ... meaning clicked on the first and third object
14379	bpr	2964	@ can be set draggable: <code>javascript:read_dragdrop()</code> will return all coordinates in same order as the canvas script: unmoved objects will have their original coordinates...
14247	bpr	2965	@ snaptogrid is supported...snaptopoints will work, but use with care... due to the primitive dragging. Technically: the dragstuff library is not used... the mathml is embedded in a new div element and not in the html5-canvas.
		2966	@ when clicked, the mathml object will be drawn in red color; the div background color will be determined by the <a href="#fillcolor">fillcolor</a> and <a href="#opacity">opacity</a> settings.
15111	schaersvoo	2967	@ userdraw may be combined with 'mathml' ; the read_canvas() will contain the drawing.
		2968	@ draggable or onclick 'external images' from command <a href='#copyresized'>copy or copyresized</a> can be combined with drag and/or onclick mathml
14078	bpr	2969	@ other drag objects (circles/rects etc) are supported, but read_dragdrop() will probably be difficult to interpret...
17351	bpr	2970	@ if inputfields are incorporated in mathml (with id's: id='mathml0',id='mathml1',...id='mathml_n')<br>the user_input values will be read by javascript:read_mathml();<br><b>attention</b>: if after this mathml-input object other user-interactions are included, these will read mathml too using "read_canvas();"
11806	schaersvoo	2971	@ If other inputfields (command input / command textarea) or userdraw is performed, the function read_canvas() will not read mathml. Use some generic function to read it....
14038	schaersvoo	2972	@ use keyword <a href='#centered'>centered</a> to center the mathml/xml object on (x1:y1)
15313	schaersvoo	2973	@%mathml_onclick%size 400,400%xrange -10,10%yrange -10,10%onclick%strokecolor red%mathml -5,5,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml366290"><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex" columnalign=" left " columnlines=" none " rowlines=" none " ><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mn>2</mn></mfrac></mstyle><mo>⋅</mo><msup><mi>x</mi> <mn>2</mn></msup></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><msup><mi>x</mi> <mn>2</mn></msup></mrow></mfrac></mstyle></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%onclick%strokecolor blue%mathml 5,5,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml580175" ><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex" columnalign=" left " columnlines=" none " rowlines="none"><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></mfrac></mstyle></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>
		2974	@%mathml_drag%size 400,400%xrange -10,10%yrange -10,10%drag xy%strokecolor red%mathml -5,5,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml366290"><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex" columnalign=" left " columnlines=" none " rowlines=" none "><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mn>2</mn></mfrac></mstyle><mo>⋅</mo><msup><mi>x</mi> <mn>2</mn></msup></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><msup><mi>x</mi> <mn>2</mn></msup></mrow></mfrac></mstyle></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%drag xy%strokecolor blue%mathml 5,5,<span style="font-size:1em;"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mstyle id="wims_mathml580175" ><mrow><mo stretchy="true">[</mo><mtable rowspacing="0.5ex" columnalign=" left " columnlines=" none " rowlines=" none "><mtr><mtd><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><mstyle displaystyle="true"><mfrac><mn>1</mn><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></mfrac></mstyle></mtd></mtr> <mtr><mtd><mi>g</mi><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>=</mo><msqrt><mrow><mi>sin</mi><mrow><mo stretchy="true">(</mo><msup><mi>x</mi> <mn>2</mn></msup><mo stretchy="true">)</mo></mrow></mrow></msqrt></mtd></mtr></mtable><mo stretchy="true">]</mo></mrow></mstyle></math></span>%#click left top corner...then drag...
11806	schaersvoo	2975	*/
15111	schaersvoo	2976	js_function[DRAW_XML] = 1;
		2977	for(i=0;i<3;i++){
11806	schaersvoo	2978	switch(i){
15111	schaersvoo	2979	case 0: double_data[0]=get_real(infile,0);break; /* x in x/y-range coord system -> pixel width */
		2980	case 1: double_data[1]=get_real(infile,0);break; /* y in x/y-range coord system -> pixel height */
		2981	case 2: decimals = find_number_of_digits(precision);
		2982
		2983	if(use_affine == TRUE ){ transform(2,2);}/* needs double_data[] */
		2984	if( use_offset != 0 \|\| drag_type != -1 ){int_data[2] = 1;}else{int_data[2] = 0;} /* only centered or not-centered */
		2985	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		2986	int_data[0] = x2px(double_data[0]);/* needs px */
		2987	int_data[1] = y2px(double_data[1]);
		2988	if( use_slider != -1 && onclick == 0 ){ onclick = 3;}/* no drag&onclick but slideable */
15116	bpr	2989	if( use_slider != -1 && drag_type != -1){ onclick = 5; }
11806	schaersvoo	2990	temp = get_string(infile,1);
		2991	if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
15111	schaersvoo	2992	string_length = 1 + snprintf(NULL,0,"var draw_xml%d = {id:%d,type:'mathml',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%d,rotation_center:%s,once:true};draw_xml(draw_xml%d);slidergroup[%d] = null;\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,use_slider,rotation_center,drawxml_cnt,object_cnt);
14208	schaersvoo	2993	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	2994	snprintf(tmp_buffer,string_length, "var draw_xml%d = {id:%d,type:'mathml',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%d,rotation_center:%s,once:true};draw_xml(draw_xml%d);slidergroup[%d] = null;\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,use_slider,rotation_center,drawxml_cnt,object_cnt);
11806	schaersvoo	2995	add_to_buffer(tmp_buffer);
15111	schaersvoo	2996	if(onclick != 0 ){object_cnt++;}
		2997	drawxml_cnt++;/* keeps track on imported img,div,p,span,mathml,svg */
11806	schaersvoo	2998	/*
15111	schaersvoo	2999	in case inputs are present, trigger adding the read_mathml()
		3000	if no other reply_format is defined
		3001	note: all other reply types will include a reading of elements with id='mathml'+p)
		3002	*/
		3003	if(strstr(temp,"mathml0") != NULL){ if(reply_format == 0 ){reply_format = 16;}} /* no other reply type is defined */
11806	schaersvoo	3004	break;
15116	bpr	3005	default:break;
11806	schaersvoo	3006	}
		3007	}
15111	schaersvoo	3008	reset();
11806	schaersvoo	3009	break;
		3010
		3011	case MOUSE:
		3012	/*
		3013	@ mouse color,fontsize
15313	schaersvoo	3014	@ will display the cursor (x:y) coordinates in ''color`` and ''fontsize`` using default fontfamily Arial
14379	bpr	3015	@ note: use command ''mouse`` at the end of your script code (the same is true for command ''zoom``)
12107	schaersvoo	3016	@%mouse%size 400,400%xrange -10,10%yrange -10,10%mouse red,22
11806	schaersvoo	3017	*/
		3018	stroke_color = get_color(infile,0);
		3019	font_size = (int) (get_real(infile,1));
		3020	tmp_buffer = my_newmem(26);
13371	schaersvoo	3021	snprintf(tmp_buffer,26,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
15111	schaersvoo	3022	add_js_mouse(MOUSE_CANVAS,precision,stroke_color,font_size,stroke_opacity,2);
		3023	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3024	break;
		3025
		3026
		3027	case MOUSE_DEGREE:
		3028	/*
		3029	@ mouse_degree color,fontsize
17351	bpr	3030	@ will display the angle in degrees between x-axis, (0:0) and the cursor (x:y) in 'color' and 'font size'<br> using a fontfamily Arial
11806	schaersvoo	3031	@ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
15111	schaersvoo	3032	@ note: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
12107	schaersvoo	3033	@%mouse_degree%size 400,400%xrange -10,10%yrange -10,10%userdraw arc,blue%precision 100000%mouse_degree red,22
11806	schaersvoo	3034	*/
		3035	stroke_color = get_color(infile,0);
		3036	font_size = (int) (get_real(infile,1));
		3037	tmp_buffer = my_newmem(26);
13371	schaersvoo	3038	snprintf(tmp_buffer,26,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
15111	schaersvoo	3039	add_js_mouse(MOUSE_CANVAS,precision,stroke_color,font_size,stroke_opacity,3);
11806	schaersvoo	3040	js_function[JS_FIND_ANGLE] = 1;
15111	schaersvoo	3041	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3042	break;
		3043	case MOUSE_DISPLAY:
		3044	/*
		3045	@ display TYPE,color,fontsize
15111	schaersvoo	3046	@ TYPE may be x \| y \| xy \| degree \| radian \| radius
		3047	@ will display the mouse cursor coordinates as x-only,y-only,(x:y), the radius of a circle (this only in case 'userdraw circle(s),color') or the angle in degrees or radians for commands <code>userdraw arc,color</code> or protractor, ruler (if set dynamic).
15650	reyssat	3048	@ use commands ''xunit`` and / or ''yunit`` to add the units to the mouse values. The ''degree \| radian`` will always have the appropriate symbol).
14077	bpr	3049	@ just like commands ''mouse``, ''mousex``, ''mousey``, ''mouse_degree``... only other name
12111	schaersvoo	3050	@%display_x%size 400,400%xrange -10,10%yrange -10,10%xunit \\u212B%display x,red,22
12107	schaersvoo	3051	@%display_y%size 400,400%xrange -10,10%yrange -10,10%yunit seconds%display y,red,22
13936	bpr	3052	@%display_xy%size 400,400%xrange -10,10%yrange -10,10%xunit centimetre%yunit seconds%display xy,red,22%userdraw segments,blue
12107	schaersvoo	3053	@%display_deg%size 400,400%xrange -10,10%yrange -10,10%display degree,red,22%fillcolor orange%opacity 200,50%userdraw arc,blue
		3054	@%display_rad%size 400,400%xrange -10,10%yrange -10,10%display radian,red,22%fillcolor orange%opacity 200,50%userdraw arc,blue
12111	schaersvoo	3055	@%display_radius%size 400,400%xrange -10,10%yrange -10,10%xunit cm%xunit \\u212b%display radius,red,22%userdraw circle,blue
11806	schaersvoo	3056	*/
		3057	temp = get_string_argument(infile,0);
		3058	if( strstr(temp,"xy") != NULL ){
		3059	int_data[0] = 2;
		3060	}else{
		3061	if( strstr(temp,"y") != NULL ){
		3062	int_data[0] = 1;
		3063	}else{
		3064	if( strstr(temp,"x") != NULL ){
		3065	int_data[0] = 0;
		3066	}else{
		3067	if(strstr(temp,"degree") != NULL){
		3068	int_data[0] = 3;
		3069	js_function[JS_FIND_ANGLE] = 1;
		3070	}else{
		3071	if(strstr(temp,"radian") != NULL){
		3072	int_data[0] = 4;
		3073	js_function[JS_FIND_ANGLE] = 1;
		3074	}else{
		3075	if(strstr(temp,"radius") != NULL){
		3076	int_data[0] = 5;
		3077	}else{
		3078	int_data[0] = 2;
		3079	}
		3080	}
		3081	}
		3082	}
		3083	}
		3084	}
		3085	stroke_color = get_color(infile,0);
		3086	font_size = (int) (get_real(infile,1));
		3087	tmp_buffer = my_newmem(26);
13371	schaersvoo	3088	snprintf(tmp_buffer,26,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
15111	schaersvoo	3089	add_js_mouse(MOUSE_CANVAS,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
		3090	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3091	break;
		3092
		3093	case MOUSE_PRECISION:
		3094	/*
		3095	@ precision int
		3096	@ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
		3097	@ may be used / changed before every object
15111	schaersvoo	3098	@ In case of user interaction (like ''userdraw`` or ''multidraw``), this value will be used to determine the amount of decimals in the reply / answer
13936	bpr	3099	@%precision%size 400,400%xrange -10,10%yrange -10,10%precision 1%userdraw segment,red
11806	schaersvoo	3100	*/
		3101	precision = (int) (get_real(infile,1));
		3102	if(precision < 1 ){precision = 1;};
		3103	break;
		3104
		3105	case MOUSEX:
		3106	/*
		3107	@ mousex color,fontsize
15313	schaersvoo	3108	@ will display the cursor x-coordinate in ''color`` and ''font size`` using the fontfamily Arial.
14247	bpr	3109	@ note: use command ''mouse`` at the end of your script code (the same is true for command ''zoom``).
11806	schaersvoo	3110
		3111	*/
		3112	stroke_color = get_color(infile,0);
		3113	font_size = (int) (get_real(infile,1));
		3114	tmp_buffer = my_newmem(26);
13371	schaersvoo	3115	snprintf(tmp_buffer,26,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
15111	schaersvoo	3116	add_js_mouse(MOUSE_CANVAS,precision,stroke_color,font_size,stroke_opacity,0);
		3117	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3118	break;
		3119	case MOUSEY:
		3120	/*
		3121	@ mousey color,fontsize
15313	schaersvoo	3122	@ will display the cursor y-coordinate in ''color`` and ''font size`` using default fontfamily Arial.
14247	bpr	3123	@ note: use command ''mouse`` at the end of your script code (the same is true for command ''zoom``).
11806	schaersvoo	3124
		3125	*/
		3126	stroke_color = get_color(infile,0);
		3127	font_size = (int) (get_real(infile,1));
		3128	tmp_buffer = my_newmem(26);
13371	schaersvoo	3129	snprintf(tmp_buffer,26,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
15111	schaersvoo	3130	add_js_mouse(MOUSE_CANVAS,precision,stroke_color,font_size,stroke_opacity,1);
		3131	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3132	break;
		3133
		3134	case MULTIDASH:
		3135	/*
		3136	@ multidash 0,1,1
14071	bpr	3137	@ meaning draw objects no. 2 (circle) and 3 (segments), in the list of command like <code>multifill points,circle,segments</code>, are dashed
14066	bpr	3138	@ use before command <a href='#multidraw'>multidraw</a>
14247	bpr	3139	@ if not set all objects will be set ''not dashed``... unless a generic keyword ''dashed`` was given before command ''multidraw``
17351	bpr	3140	@ the dash-type is not -yet- adjustable <br>(e.g. command <code>dashtype line_px,space_px</code> will give no control over multidraw objects)
11806	schaersvoo	3141	@ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
14077	bpr	3142	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3143	*/
		3144	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3145	temp = get_string(infile,1);
		3146	temp = str_replace(temp,",","\",\"");
		3147	fprintf(js_include_file,"var multidash = [\"%s\"];",temp);
		3148	reset();/* if command 'dashed' was given...reset to not-dashed */
		3149	break;
		3150
		3151	case MULTIDRAW:
		3152	/*
		3153	@ multidraw obj_type_1,obj_type_2...obj_type_11
14066	bpr	3154	@ for simple single object user drawings you could also use command <a href="#userdraw">userdraw</a>
17351	bpr	3155	@ implemented obj_types:<ul><li>point \| points</li><li>circle \| circles</li><li>line \| lines</li><li>segment \| segments</li><li>arrow \| arrows (use command 'arrowhead int' for size (default value 8 pixels))</li><li>curvedarrow \| curvedarrows</li><li>rect \| rects</li><li>closedpoly<br><b>only one</b> closedpolygon may be drawn.The number of ''corner points`` is not preset (e.g. not limited, freestyle), the polygon is closed when clicking on the first point again..(+/- 10px)</li><li>triangle \| triangles</li><li>parallelogram \| parallelograms</li><li>poly[3-9] \| polys[3-9] draw 3...9 point polygone(s): polys3 is of course triangles</li><li>images</li><li>crosshair \| crosshairs</li><li>function <br/>for more function user input fields, use it multiple times<br>for 4 inputfields use : multidraw function,function,function,function</li></ul>
		3156	@ additionally objects may be user labelled, using obj_type ''text``...<br>in this case allways a text input field and if <a href='#multiuserinput'> multiuserinput=1 </a> also (x:y) inputfields will be added to the page.<br>use commands ''fontfamily`` and ''fontcolor`` to adjust (command ''multistrokeopacity`` may be set to adjust text opacity)<br>note: text is always centered on the mouse-click or user-input coordinates !<br>note: no keyboard listeners are used
		3157	@ it makes no sense using something like ''multidraw point,points`` ... <br>something like "multidraw polys4,polys7" will only result in drawing a ''4 point polygone`` and not a ''7 point polygone``: this is a design flaw and not a feature...
		3158	@ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br> to overrule use command/keyword "status" (no arguments required)
		3159	@ buttons for changing the obj_type (and in case of ''multiuserinput``, some inputfields and buttons) <br>will be present in the reserved div ''tooltip_div`` and can be styled using command 'css some_css'
		3160	@ the button label will be default the ''object primitive name`` (like ''point``, ''circles``).<br>If you want a different label (e.g. an other language), use command ''multilabel``<br>for example in dutch: <br><code>multilabel cirkel,lijnstuk,punten,STOP<br>multidraw circle,segment,points</code><br>(see command <a href='#multilabel'>multilabel</a> for more details)
14063	schaersvoo	3161	@ a right mouse button click will remove the last drawn object of the selected drawing type. All other type of objects are not removed
15111	schaersvoo	3162	@ multidraw is incompatible with command ''tooltip`` (the reserved div_area is used for the multidraw control buttons)
17351	bpr	3163	@ all ''multidraw`` drawings will scale on zooming.<br>this in contrast to the command <a href="#userdraw">userdraw</a>.
		3164	@ wims will <b>not</b> check the amount or validity of your command arguments ! <br>( use javascript console to debug any typo's )
		3165	@ a local function <code>read_canvas%d</code> will read all userbased drawings.<br>The output is always a 16 lines string with fixed sequence.<br/>line 1 = points_x+";"+points_y+"\\n"<br/>line 2 = circles_x+";"+circles_y+";"+multi_radius+"\\n"<br/>line 3 = segments_x+";"+segments_y+"\\n"<br/>line 4 = arrows_x+";"+arrows_y+"\\n"<br/>line 5 = lines_x+";"+lines_y+"\\n"<br/>line 6 = triangles_x+";"+triangles_y+"\\n"<br/>line 7 = polys[3-9]_x+";"+polys[3-9]_y+"\\n"<br/>line 8 = rects_x +";"+rects_y+"\\n"<br>line 9 = closedpoly_x+";"+closedpoly_y+"\\n"<br/>line 10 = parallelogram_x+";"+parallelogram_y"\\n"<br/>line 11 = text_x+";"+text_y+";"+text"\\n"<br>line 12 = image_x+";"+image_y+";"+image_id<br>line 13 = curvedarrows_x +";"+ curvedarrows_y +"\\n"<br>line 14 = curvedarrows2_x +";"+ curvedarrows2_y +"\\n"<br>line 15 = crosshairs_x +";"+ crosshairs_y +"\\n"<br>line 16 = userdraw_x +";"+userdraw_y + "\\n" note: this is for single ''userdraw object,color`` and ''replyformat 29``<br/>line 17 = userdraw_x +";"+userdraw_y +";"+userdraw_radius + "\\n" note: this is for single ''userdraw object,color`` and ''replyformat 29``<br/>The x/y-data are in x/y-coordinate system and display precision may be set by a previous command ''precision 0 \| 10 \| 100 \| 1000...``<br>In case of circles the radius is -for the time being- rounded to pixels<br><b>use the wims "direct exec" tool to see the format of the reply</b>
		3166	@ It is best to prepare / format the student reply in clientside javascript.<br>However in ''wims`` language you could use something like this<br>for example you are interested in the polys5 drawings of a pupil (the pupil may draw multiple poly5 objects...)<br>note: the reply for 2 poly5's is: x11,x12,x13,x14,x15,x21,x22,x23,x24,x25 ; y11,y12,y13,y14,y15,y21,y22,y23,y24,y25<br>rep = !line 7 of reply <br>rep = !translate ';' to '\\n' in $rep <br>pts = 5 # 5 points for polygon <br>x_rep = !line 1 of $rep <br>y_rep = !line 2 of $rep <br>tot = !itemcnt $x_rep <br>num_poly = $[$tot/$pts] <br>idx = 0 <br>!for p=1 to $num_poly <br> !for s=1 to $pts <br>  !increase idx <br>  X = !item $idx of $x_rep <br>  Y = !item $idx of $y_rep <br>  # do some checking <br> !next s <br>!next p <br>
14379	bpr	3167	@ <b>attention</b>: for command argument ''closedpoly``, only one polygone can be drawn. The last point (e.g. the point clicked near the first point) of the array is removed.
17351	bpr	3168	@ technical: all 10 ''draw primitives`` + ''text`` will have their own -transparent- PNG bitmap canvas. <br>So for example there can be a points_canvas entirely separated from a line_canvas.<br>This to avoid the need for a complete redraw when something is drawn to the canvas...(eg only the object_type_canvas is redrawn), this in contrast too many very slow do-it-all HTML5 canvas javascript libraries.<br>The mouselisteners are attached to the canvas-div element.
		3169	@ a special object type is ''images``.<br>if used together with <a href='#imagepalette'>imagepalette</a> a image table will be integrated in the 'control section' of multidraw (set <code>multiuserinput 1</code> for ''images``) if not used with <a href='#imagepalette'>imagepalette</a>, provide the images or div's (<img> tag with bitmap or SVG or anything in a div element) somewhere on the html exercise page, with an onclick handler like:<br><code><img src='gifs/images/dog.svg' onclick='javascript:place_image_on_canvas(this.id);' id="ext_image_1" /><br><img src='gifs/fish.png' onclick='javascript:place_image_on_canvas(this.id);' id="another" /></code><br>etc ... when activating the multidraw ''image`` button, the images can be selected<br> (left mouse button/onclick) and placed on the canvas...left mouse click.<br>using div's will enable you -amongst other content- to add math typesetting from the exercise page onto the canvas.
		3170	@ When you are not content with the default ''multidraw control panel``, you can create your own interface, using a few javascript functions to call the drawprimitives, delete things and ''stop drawing`` in case you also want to drag&drop stuff...</br>To activate this feature, use <a href='#multilabel'>multilabel NOCONTROLS</a><br>The object types are internally represented by the following numbers (making typos will render your exercise null and void)<br/>point = 0<br>points =1<br>circle = 2<br>circles = 3<br>line = 4<br>lines = 5<br>segment = 6<br>segments = 7<br>arrow = 8<br>arrows = 9<br>triangle = 10<br>triangles = 11<br>closedspoly = 12<br>text = 13<br>rect = 14<br>rects = 15<br>poly[3-9] = 16<br>polys[3-9] = 17<br>parallelogram = 18<br>parallelograms = 19<br>images = 20<br>curvedarrow = 21<br>curvedarrows = 22<br>curvedarrow2 = 23<br>curvedarrows2 = 24<br>crosshair = 25<br>crosshairs = 26 <br>controls for example:<br><code><input type='button' onclick='javascript:userdraw_primitive=null' value='STOP DRAWING' /><br><input type='button' onclick='javascript:userdraw_primitive=24;multidraw_object_cnt = 0;' value='start drawing curvedarrows2' /> <br><input type='button' onclick='javascript:var fun=eval("clear_draw_area"+canvas_scripts[0]);fun(24,0);' value='REMOVE LAST CURVEDARROW ' /> </code><br/> If using multiple canvas scripts in a single page, loop through the canvas_scripts[n] <br>note: if using NOCONTROLS and just a single draw primitive (for example, just: 'multidraw circles'), the object may be drawn directly. (analogue to 'userdraw circles,color')<br>And since a right mouse button click will always remove the last drawn object of the current object type, there is no need for a special "remove button"
16828	schaersvoo	3171	@%multidraw_function%size 400,400%xrange -10,10%yrange -10,10%fontfamily Italic 22px Helvetica%axis%axisnumbering%precision 0%grid 2,2,grey,1,1,5,black%multicolors red,green,blue%fontcolor orange%multilinewidth 1,2,3%multidraw text,function,function,function,line
12107	schaersvoo	3172	@%multidraw%size 400,400%xrange -10,10%yrange -10,10%multidash 1,0%multilinewidth 1,2%multistrokecolors red,blue%multisnaptogrid 1,1%multilabel LINES,CIRCLES,STOP DRAWING%multidraw lines,circles
15313	schaersvoo	3173	@%multidraw_images%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%drag xy%# use special function to read the drag coordinates%copy 0,0,-1,-1,-1,-1,gifs/images/skull_and_crossbones50.png%fontcolor green%fontfamily Bold 42pt Arial%imagepalette gifs/ca.gif,gifs/en.gif,gifs/nl.gif,gifs/fr.gif,gifs/cn.gif,gifs/de.gif,gifs/kh.gif,gifs/it.gif%multiuserinput 0,0,1%css color:blue;%multisnaptogrid 1,1,1%multilinewidth 0,4,0%# attention: use unicode text input without the slash %# \u222D ---> u222D at least will sometimes work%# otherwise cut&past unicode symbols into inputfield...%multilabel TEXT,REACTION ARROW,FLAGS,STOP DRAWING%multidraw text,arrow,images
		3174	@%multidraw_demo%size 800,800%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%css color:blue;%fontfamily Italic 42pt Arial%precision 1%opacity 200,50%snaptogrid%linewidth 3%filled%multistrokecolors red,green,blue,orange,yellow,purple,black,cyan,red,green,blue,orange,green,purple,black,cyan%multifillcolors red,green,blue,orange,yellow,purple,black,cyan,red,green,blue,orange,brown,purple%imagepalette gifs/ca.gif,gifs/en.gif,gifs/nl.gif,gifs/fr.gif,gifs/cn.gif,gifs/de.gif,gifs/kh.gif,gifs/it.gif%multidraw closedpoly,segments,rect,parallelogram,triangles,poly5,points,lines,arrows,circles,text,curvedarrows,curvedarrows2,images
16827	schaersvoo	3175	@%multidraw_NOCONTROLS%size 400,400%xrange -10,10%yrange -10,10%grid 2,2,grey%linewidth 3%strokecolor green%fillcolor blue%filled%opacity 255,60%multilabel NOCONTROLS%multidraw circles%# RIGHT MOUSE CLICK REMOVES LAST OBJECT
11806	schaersvoo	3176	*/
15111	schaersvoo	3177	js_function[INTERACTIVE] = 1;
15633	bpr	3178	if(js_function[JS_ZOOM] == 1){use_zoom = 1;} /* use noisy zoom_code, when command zoom is given before command 'multidraw' */
14038	schaersvoo	3179	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
15111	schaersvoo	3180	if( use_userdraw == 1 ){canvas_error("Only one userdraw primitive may be used in command 'userdraw' use command 'multidraw' for this...");}
		3181	use_userdraw = 2;
11806	schaersvoo	3182	temp = get_string(infile,1);
		3183	fprintf(js_include_file,"\
15111	schaersvoo	3184	var MMP = %d;\
		3185	if( typeof(multisnaptogrid) == 'undefined' && multisnaptogrid == null){var multisnaptogrid = new Array(MMP);for(var i=0;i<MMP;i++){multisnaptogrid[i] = %d;};};\
		3186	if( typeof(multistrokecolors) === 'undefined' && multistrokecolors == null){ var multistrokecolors = new Array(MMP);for(var i=0;i<MMP;i++){multistrokecolors[i] = '%s';};};\
		3187	if( typeof(multifillcolors) === 'undefined' && multifillcolors == null ){var multifillcolors = new Array(MMP);for(var i=0;i<MMP;i++){multifillcolors[i] = '%s';};};\
		3188	if( typeof(multistrokeopacity) === 'undefined' && multistrokeopacity == null){var multistrokeopacity = new Array(MMP);for(var i=0;i<MMP;i++){multistrokeopacity[i] = %.2f;};};\
		3189	if( typeof(multifillopacity) === 'undefined' && multifillopacity == null){var multifillopacity = new Array(MMP);for(var i=0;i<MMP;i++){multifillopacity[i] = %.2f;};};\
		3190	if( typeof(multilinewidth) === 'undefined' && multilinewidth == null){var multilinewidth = new Array(MMP);for(var i=0;i<MMP;i++){multilinewidth[i] = %d;};};\
		3191	if( typeof(multifill) === 'undefined' && multifill == null){var multifill = new Array(MMP);for(var i=0;i<MMP;i++){multifill[i] = %d;};};\
		3192	if( typeof(multidash) === 'undefined' && multidash == null){var multidash = new Array(MMP);for(var i=0;i<MMP;i++){multidash[i] = %d;};};\
		3193	if( typeof(multilabel) === 'undefined' && multilabel == null){var multilabel = [\"%s\",\"stop drawing\"];};\
		3194	if( typeof(multiuserinput) === 'undefined' && multiuserinput == null){var multiuserinput = new Array(MMP);for(var i=0;i<MMP;i++){multiuserinput[i] = '0';};};\
		3195	var arrow_head = %d;var multifont_color = '%s';var multifont_family = '%s';var forbidden_zone = [xsize+2,ysize+2];",
		3196	MAX_MULTI_PRIMITIVES,
		3197	use_snap,
		3198	stroke_color,
		3199	fill_color,
		3200	stroke_opacity,
		3201	fill_opacity,
		3202	line_width,
		3203	use_filled,
		3204	use_dashed,
		3205	str_replace(temp,",","\",\""),
		3206	arrow_head,font_color,font_family);
16827	schaersvoo	3207	add_js_multidraw(temp,css_class,use_offset,int_data[MAX_MULTI_PRIMITIVES+1],crosshair_size,use_zoom);
		3208	/* no_controls == int_data[MAX_MULTI_PRIMITIVES+1] */
		3209	reply_precision = precision;
11806	schaersvoo	3210	if(strstr(temp,"text") != NULL){
15111	schaersvoo	3211	js_function[JS_SAFE_EVAL] = 1;
16722	schaersvoo	3212	js_function[DRAW_SUBSUP] = 1;
11806	schaersvoo	3213	}
16827	schaersvoo	3214	if(strstr(temp,"function") != NULL){
16832	bpr	3215	int pp, funs = count_substring(temp, "function");
16827	schaersvoo	3216	js_function[JS_SAFE_EVAL] = 1;
		3217	js_function[JS_RAWMATH] = 1;
		3218	js_function[DRAW_JSFUNCTION] = 1;
		3219	js_function[JS_MATH] = 1;
		3220	js_function[JS_PLOT] = 1;
16832	bpr	3221	for(pp = 0 ; pp< funs ;pp++){
16827	schaersvoo	3222	add_input_jsfunction(css_class,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1],font_size);
		3223	input_cnt++;
		3224	jsplot_cnt++;
		3225	}
		3226	fprintf(js_include_file,"if(typeof(all_jsplots) !== 'number'){var all_jsplots;};all_jsplots = %d;function redraw_userdraw(){redraw_jsplot();return;};",jsplot_cnt);
		3227	}
11806	schaersvoo	3228	/* the canvasses range from 1000 ... 1008 */
		3229	if( reply_format == 0){reply_format = 29;}
		3230	reset();/* if command 'filled' / 'dashed' was given...reset all */
		3231	break;
		3232	case MULTILABEL:
		3233	/*
		3234	@ multilabel button_label_1,button_label_2,...,button_label_8,'stop drawing text'
14066	bpr	3235	@ use before command <a href='#multidraw'>multidraw</a>
15111	schaersvoo	3236	@ if not set all labels (e.g. the value of input type 'button') will be set by the english names for the draw_primitives (like 'point','circle'...)
17351	bpr	3237	@ the ''stop drawing`` button text <b>must</b> be the last item on the ''multilabel`` -list <br>for example:<br><code>multilabel punten,lijnen,Stop met Tekenen<br>multidraw points,lines</code>
		3238	@ all buttons can be ''styled`` by using command <code>css</code><br><b>note:</b>If you want to add some CSS style to the buttons...<br>the id's of the ''draw buttons`` are their english command argument<br>(e.g. id="canvasdraw_points" for the draw points button).<br>the id of the ''stop drawing`` button is "canvasdraw_stop_drawing".<br>the id of the "OK" button is ''canvasdraw_ok_button``
15111	schaersvoo	3239	@ wims will not check the amount or validity of your input
		3240	@ always use the same sequence as is used for ''multidraw``
		3241	@ if you don't want the controls, and want to write your own interface, set <code>multilabel NOCONTROLS</code>
11806	schaersvoo	3242	*/
		3243	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3244	temp = get_string(infile,1);
15116	bpr	3245	if( strcasestr(temp,"NOCONTROLS") ){
15111	schaersvoo	3246	int_data[MAX_MULTI_PRIMITIVES+1] = 1; /int_data[25] = 1 --> 'no_controls = 1' in canvasmacro.c /
		3247	fprintf(js_include_file,"var multilabel = null;");
		3248	}
		3249	else
		3250	{
		3251	int_data[MAX_MULTI_PRIMITIVES+1] = 0; /* so DO use control buttons etc */
		3252	temp = str_replace(temp,",","\",\"");
		3253	fprintf(js_include_file,"var multilabel = [\"%s\"];",temp);
		3254	}
11806	schaersvoo	3255	break;
		3256	case MULTILINEWIDTH:
		3257	/*
		3258	@ multilinewidth linewidth_1,linewidth_2,...,linewidth_8
14066	bpr	3259	@ use before command <a href='#multidraw'>multidraw</a>
14071	bpr	3260	@ if not set all line widths will be set by a previous command ''linewidth int``
		3261	@ use these up to 7 different line widths for the draw primitives used by command <code>multidraw obj_type_1,obj_type_2...obj_type_7</code>
11806	schaersvoo	3262	@ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
14071	bpr	3263	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3264	*/
		3265	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3266	temp = get_string(infile,1);
		3267	temp = str_replace(temp,",","\",\"");
		3268	fprintf(js_include_file,"var multilinewidth = [\"%s\"];",temp);
		3269	break;
		3270	case MULTIFILL:
		3271	/*
		3272	@ multifill 0,0,1,0,1,0,0
14071	bpr	3273	@ meaning draw objects no. 3 and 5, in the list of command ''multifill``, are filled (if the object is fillable...and not a line,segment,arrow or point...)
17351	bpr	3274	@ using a fillpattern: multifill 0,1,2,5,3,4<br>meaning: first object is not filled...second object is solid color filled...2=grid \| 3=hatch \| 4=diamond \| 5=dot
14066	bpr	3275	@ use before command <a href='#multidraw'>multidraw</a>
14246	bpr	3276	@ if not set all objects -except point\|points- will be set ''not filled``... unless a command <code>filled</code> was given before command <code>multifill</code>
15651	reyssat	3277	@ only suitable for draw_primitives like ''circle \| circles``, ''triangle \| triangles``, ''rect \| rects``, ''poly[3-9] \| polys[3-9]`` and ''polygon``
11806	schaersvoo	3278	@ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
14071	bpr	3279	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3280	*/
		3281	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
15111	schaersvoo	3282	i=0;
		3283	while( ! done ){ /* get next item until EOL*/
		3284	if(i > MAX_MULTI_PRIMITIVES){canvas_error("too many multidraw primitives...read the documentation...");}
		3285	int_data[i] = (int)(get_real(infile,1)); /* 0,1,2,3,4,5 */
		3286	if(int_data[i] < 0 \|\| int_data[i] > 5 ){canvas_error("the only possible multifill arguments are: 0,1,2,3,4,5 ");}
		3287	if(int_data[i] > 1 ){use_filled = 2;js_function[DRAW_FILL_PATTERN] = 1;}/* switch to trigger pattern filling */
15116	bpr	3288	i++;
15111	schaersvoo	3289	}
		3290	fprintf(js_include_file,"var multifill = %s ;",data2js_array(int_data,i-1));
11806	schaersvoo	3291	break;
		3292
		3293	case MULTIFILLCOLORS:
		3294	/*
		3295	@ multifillcolors color_name_1,color_name_2,...,color_name_8
14066	bpr	3296	@ use before command <a href='#multidraw'>multidraw</a>
14078	bpr	3297	@ if not set all fillcolors (for circle \| triangle \| poly[3-9] \| closedpoly ) will be ''stroke_color``, ''fill_opacity``
14071	bpr	3298	@ use these up to 6 colors for the draw primitives used by command <code>multidraw obj_type_1,obj_type_2...obj_type_n</code>
11806	schaersvoo	3299	@ wims will <b>not</b> check if the number of colours matches the amount of draw primitives...
14379	bpr	3300	@ always use the same sequence as is used for ''multidraw``
17351	bpr	3301	@ can also be used with command <a href='#userdraw'>userdraw clickfill,color</a> when more than one fillcolor is wanted.<br>in that case use for example <a href='#replyformat'>replyformat 10</a> ... reply=x1:y1:color1,x2:y2:color2...<br>the colors will restart at the first color, when there are more fill-clicks than multi-fill-colors<br>if more control over the used colours is wanted, see command <a href='#colorpalette'>colorpalette color1,color2...</a>
11806	schaersvoo	3302	*/
		3303	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3304	fprintf(js_include_file,"var multifillcolors = [");
		3305	while( ! done ){
		3306	temp = get_color(infile,1);
		3307	fprintf(js_include_file,"\"%s\",",temp);
		3308	}
		3309	fprintf(js_include_file,"\"0,0,0\"];");/* add black to avoid trouble with dangling comma... */
		3310	break;
		3311
		3312	case MULTIFILLOPACITY:
		3313	/*
		3314	@ multifillopacity fill_opacity_1,fill_opacity_2,...,fill_opacity_8
		3315	@ float values 0 - 1 or integer values 0 - 255
14066	bpr	3316	@ use before command <a href='#multidraw'>multidraw</a>
14071	bpr	3317	@ if not set all fill opacity_ will be set by previous command <code>opacity int,int</code> and keyword ''filled``
		3318	@ use these up to 7 different stroke opacities for the draw primitives used by command <code>multidraw obj_type_1,obj_type_2...obj_type_y</code>
11806	schaersvoo	3319	@ wims will not check the amount or validity of your input
14071	bpr	3320	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3321	*/
		3322	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3323	temp = get_string(infile,1);
		3324	temp = str_replace(temp,",","\",\"");
		3325	fprintf(js_include_file,"var multifillopacity = [\"%s\"];",temp);
		3326	break;
		3327	case MULTISNAPTOGRID:
		3328	/*
		3329	@ multisnaptogrid 0,1,1
15715	schaersvoo	3330	@ alternative: multisnap
14071	bpr	3331	@ meaning draw objects no. 2 (circle) and 3 (segments), in the list of command like <code>multifill points,circle,segments</code>, will snap to the xy-grid (default 1 in x/y-coordinate system: see command <a href='#snaptogrid'>snaptogrid</a>)
		3332	@ freehand drawing...specify precision for reply: all objects snap to grid <code>multisnaptogrid 1,1,1,...</code>
14246	bpr	3333	@ only the xy-values snap_to_grid: all objects snap to grid <code>multisnaptogrid 1,1,1,...</code>
14071	bpr	3334	@ only the x-values snap_to_grid: all objects snap to x-grid <code>multisnaptogrid 2,2,2,...</code>
		3335	@ only the y-values snap_to_grid: all objects snap to y-grid <code>multisnaptogrid 3,3,3,...</code>
17351	bpr	3336	@ if <a href='#snaptopoints'>snaptopoints</a> is defined: all objects snap to points <code>multisnaptogrid 4,4,4,...</code> <br><b>make sure to define the points to snap on...</b> use command <a href='#snaptopoints'>snaptopoints</a>
		3337	@ <code>multisnaptogrid 0,1,2,3,4<br>multidraw text,arrow,line,circle,image</code><br>''text`` is free hand, ''arrow`` is snap to grid, ''line`` is snap to x-grid, ''circle`` is snap to y-grid, ''image`` is snap to points defined by command <a href='#snaptopoints'>snaptopoints</a>
15111	schaersvoo	3338	@ use before command <a href='#multidraw'>multidraw</a>
		3339	@ attention: if not set all objects will be set ''no snap``... unless a generic command ''snaptogrid`` was given before command ''multidraw``
		3340	@ commands <a href='#xsnaptogrid'>xsnaptogrid</a>, <a href='#ysnaptogrid'>ysnaptogrid</a>, <a href='#snaptofunction'>snaptofunction</a> are <b>not</b> supported amd only functional for command <a href='#userdraw'>userdraw</a>
14071	bpr	3341	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3342	@ wims will <b>not</b> check if the number of 0 or 1's matches the amount of draw primitives...
		3343	*/
		3344	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3345	temp = get_string(infile,1);
14038	schaersvoo	3346	fprintf(js_include_file,"var multisnaptogrid = [%s];",temp);
15111	schaersvoo	3347	reset();/* if command 'dashed' was given...reset to not-dashed */
11806	schaersvoo	3348	break;
		3349	case MULTISTROKECOLORS:
		3350	/*
		3351	@ multistrokecolors color_name_1,color_name_2,...,color_name_8
14066	bpr	3352	@ use before command <a href='#multidraw'>multidraw</a>
14071	bpr	3353	@ if not set all colors will be ''stroke_color``, ''stroke_opacity``
		3354	@ use these up to 6 colors for the draw primitives used by command <code>multidraw obj_type_1,obj_type_2...obj_type_7</code>
11806	schaersvoo	3355	@ wims will <b>not</b> check if the number of colours matches the amount of draw primitives...
14071	bpr	3356	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3357	*/
		3358	if( use_tooltip == 1 ){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3359	fprintf(js_include_file,"var multistrokecolors = [");
		3360	while( ! done ){
		3361	temp = get_color(infile,1);
		3362	fprintf(js_include_file,"\"%s\",",temp);
		3363	}
		3364	fprintf(js_include_file,"\"0,0,0\"];");/* add black to avoid trouble with dangling comma... */
		3365	break;
		3366	case MULTISTROKEOPACITY:
		3367	/*
		3368	@ multistrokeopacity stroke_opacity_1,stroke_opacity_2,...,stroke_opacity_7
		3369	@ float values 0 - 1 or integer values 0 - 255
14066	bpr	3370	@ use before command <a href='#multidraw'>multidraw</a>
14071	bpr	3371	@ if not set all stroke opacity_ will be set by previous command <code>opacity int,int</code>
15111	schaersvoo	3372	@ use these up to 7 different stroke opacities for the draw primitives used by command <code>multidraw obj_type_1,obj_type_2...obj_type_7</code>
11806	schaersvoo	3373	@ wims will not check the amount or validity of your input
14071	bpr	3374	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3375	*/
		3376	if( use_tooltip == 1){canvas_error("command 'multidraw' is incompatible with command 'intooltip tip_text'");}
		3377	temp = get_string(infile,1);
		3378	temp = str_replace(temp,",","\",\"");
		3379	fprintf(js_include_file,"var multistrokeopacity = [\"%s\"];",temp);
		3380	break;
		3381
		3382	case MULTIUSERINPUT:
		3383	/*
		3384	@ multiuserinput 0,1,1,0
15715	schaersvoo	3385	@ alternative: multiinput
17351	bpr	3386	@ meaning, when the command ''multidraw`` is used <code>multidraw circles,points,lines,triangles</code><br>objects ''points`` and ''lines`` may additionally be ''drawn`` by direct input (inputfields)<br/>all other objects must be drawn with a mouse
		3387	@ in case of circle \| circles a third inputfield for Radius (R) is added. The radius must be in the x/y coordinate system (x-range) and <b>not</b> in pixels...students don't think in pixels.<br>note: R-values will not snap-to-grid
		3388	@ in case of line(s) \| segment(s) \| arrow(s) the user should write <b>x1:y1</b> in the first inputfield and <b>x2:y2</b> in the second.<br>These ''hints`` are pre-filled into the input field.<br>Other coordinate delimiters are '';`` and '',`` e.g. <b>x1;y1</b> or <b>x1,y1</b>.<br>An error message (alert box) will popup when things are not correctly...
15111	schaersvoo	3389	@ in case of a triangle \| poly3, three inputfields are provided.
15651	reyssat	3390	@ in case of ''text`` and ''multiuserinput=1, 3`` inputfields will be shown: ''x,y,text``
		3391	@ in case of ''text`` and ''multiuserinput=0, 1`` inputfield will be shown: text ... a mouse click will place the text on the canvas.
15111	schaersvoo	3392	@ may be styled using command <a href="#css">css</a>
		3393	@ an additional button ''stop drawing`` may be used to combine userbased drawings with ''drag&and;drop`` or ''onclick`` elements
17351	bpr	3394	@ when exercise if finished (status=done) the buttons will not be shown.<br>To override this default behaviour use command / keyword ''status``
15111	schaersvoo	3395	@ use before command <a href='#multidraw'>multidraw</a>
		3396	@ always use the same sequence as is used for ''multidraw``
11806	schaersvoo	3397	*/
		3398	/* simple rawmath and input check */
15111	schaersvoo	3399	js_function[JS_SAFE_EVAL] = 1;
11806	schaersvoo	3400	temp = get_string(infile,1);
		3401	temp = str_replace(temp,",","\",\"");
		3402	fprintf(js_include_file,"var multiuserinput = [\"%s\"];",temp);
		3403	break;
15111	schaersvoo	3404	case NORESET:
		3405	/*
15715	schaersvoo	3406	@ noreset
		3407	@ alternative: killreset
15111	schaersvoo	3408	@ keyword
		3409	@ may come in handy if canvas script code is generated using loops
17351	bpr	3410	@ if used the following properties will remain to be valid<br><ul><li>filled</li><li>dash settings</li><li>onclick or drag settings</li><li>centering or offset</li></ul>
15111	schaersvoo	3411	@ if used again, these properies will be reset to the default values and normal behaviour is continued (e.g. the above properties will be reset after 'use' on a canvas object)
		3412	@ etc etc
17351	bpr	3413	@ commands <a href='#slider'>slider</a>, <a href='#linear'>linear</a>, <a href='#rotate'>rotate</a>, <a href='#translate'>translate</a>, <a href='#affine'>affine</a> are always active until the 'kill' commands are given: <br><a href='#killlinear'>killlinear</a>, <a href='#killrotate'>killrotate</a>, <a href='#killtranslate'>killtranslate</a> and <a href='#killaffine'>killaffine</a>
15633	bpr	3414	@ commands like 'opacity', 'linewidth', 'fontsize', 'fontfamily' are only changed when redefined again
15111	schaersvoo	3415	@%noreset%size 400,400%xrange -10,10%yrange -10,10%noreset%drag xy%linewidth 4%filled%rect -4,4,-2,2,blue%triangle -3,-3,0,0,1,-5,green%circle 0,0,50,orange%noreset%rect 2,4,4,2,blue
15758	schaersvoo	3416	@%noreset_oefgraduation%size 800,100%xrange 0,11%yrange -1,1%hline 0,0,black%parallel 0,0,0,0.5,1,0,11,blue%noreset%onclick%centered%text black,1,0.6,large,20%text black,2,0.6,large,30%text black,3,0.6,large,40%text black,4,0.6,large,50%text black,5,0.6,large,60%text black,6,0.6,large,70%text black,7,0.6,large,80%text black,8,0.6,large,90%text black,9,0.6,large,100%text black,10,0.6,large,110
15111	schaersvoo	3417	*/
		3418	if(no_reset == FALSE){no_reset = TRUE;}else{no_reset = FALSE;reset();}
		3419	break;
11806	schaersvoo	3420	case NOXAXIS:
		3421	/*
14252	bpr	3422	@ noxaxis
11806	schaersvoo	3423	@ keyword
		3424	@ if set, the automatic x-axis numbering will be ignored
14252	bpr	3425	@ use command <a href="#axis">axis</a> to have a visual x/y-axis lines (see command <a href="#grid">grid</a>)
11806	schaersvoo	3426	@ to be used before command grid (see <a href="#grid">command grid</a>)
		3427	*/
11891	schaersvoo	3428	fprintf(js_include_file,"x_strings = {};x_strings_up = [];\n");
		3429	use_axis_numbering = -1;
11806	schaersvoo	3430	break;
		3431	case NOYAXIS:
		3432	/*
14251	bpr	3433	@ noyaxis
11806	schaersvoo	3434	@ keyword
		3435	@ if set, the automatic y-axis numbering will be ignored
14252	bpr	3436	@ use command <a href="#axis">axis</a> to have a visual x/y-axis lines (see command <a href="#grid">grid</a>)
11806	schaersvoo	3437	@ to be used before command grid (see <a href="#grid">command grid</a>)
		3438	*/
11891	schaersvoo	3439	fprintf(js_include_file,"y_strings = {};\n");
11806	schaersvoo	3440	break;
11890	schaersvoo	3441	case NUMBERLINE:
		3442	/*
		3443	@ numberline x0,x1,xmajor,xminor,y0,y1
		3444	@ numberline is using xrange/yrange system for all dimensions
11996	schaersvoo	3445	@ multiple numberlines are allowed ; combinations with command <a href='#grid'>grid</a> is allowed; multiple commands <a href='#xaxis'>xaxis numbering</a> are allowed
11890	schaersvoo	3446	@ x0 is start x-value in xrange
		3447	@ x1 is end x-value in xrange
		3448	@ xmajor is step for major division
14071	bpr	3449	@ xminor is divisor of xmajor; using small (30% of major tick) tick marks: this behaviour is ''hardcoded``
		3450	@ is xminor is an even divisor, an extra tickmark (60% of major tick) is added to the numberline: this behaviour is ''hardcoded``
11890	schaersvoo	3451	@ y0 is bottom of numberline; y1 endpoint of major tics
13829	bpr	3452	@ use command <a href="#linewidth">linewidth</a> to control appearance
11890	schaersvoo	3453	@ use <a href="#strokecolor">strokecolor</a> and <a href="#opacity">opacity</a> to controle measure line
		3454	@ for all ticks linewidth and color / opacity are identical.
		3455	@ if command <a href="#xaxis">xaxis</a> or <a href="#xaxisup">xaxisup</a> is not defined, the labeling will be on major ticks: x0...x1
13829	bpr	3456	@ use <a href="#fontfamily">fontfamily</a> and <a href="#fontcolor">fontcolor</a> to control fonts settings
14078	bpr	3457	@ may be used together with <a href="#userdraw">userdraw</a>, <a href="#multidraw">multidraw</a> and <a href="#drag">user drag</a> command family for the extra object drawn onto the numberline
11890	schaersvoo	3458	@ <a href="#snaptogrid">snaptogrid, snaptopoints etc</a> and <a href="#zoom">zooming and panning</a> is supported
		3459	@ onclick and dragging of the numberline are not -yet- supported
14071	bpr	3460	@ note: in case of multiple numberlines, make sure the numberline without special x-axis numbering (e.g. ranging from xmin to xmax) comes first !
13829	bpr	3461	@%numberline%size 400,400%xrange -10,10%yrange -10,10%precision 1%strokecolor black%numberline -8,8,1,6,-4,-3.5%strokecolor red%xaxis -4:AA:-2:BB:2:CC:4:DD%numberline -8,8,1,2,4,4.5%strokecolor green%xaxisup -4:AAA:-2:BBB:2:CCC:4:DDD%numberline -8,8,1,3,2,2.5%strokecolor blue%xaxis -4:AAAA:-2:BBBB:2:CCCC:4:DDDD%numberline -8,8,1,4,0,0.5%strokecolor brown%xaxis -4:AAAAA:-2:BBBBB:2:CCCCC:4:DDDDD%numberline -8,8,1,5,-2,-1.5%zoom red
11890	schaersvoo	3462	*/
15111	schaersvoo	3463	js_function[DRAW_NUMBERLINE] = 1;
11890	schaersvoo	3464	for(i=0;i<6;i++){
		3465	switch(i){
		3466	case 0: double_data[0] = get_real(infile,0);break;/* xmin */
		3467	case 1: double_data[1] = get_real(infile,0);break;/* xmax */
		3468	case 2: double_data[2] = get_real(infile,0);break;/* xmajor */
		3469	case 3: double_data[3] = get_real(infile,0);break;/* xminor */
		3470	case 4: double_data[4] = get_real(infile,0);break;/* ymin */
		3471	case 5: double_data[5] = get_real(infile,1);/* ymax */
		3472	/*
		3473	var draw_numberline%d = function(canvas_type,xmin,xmax,xmajor,xminor,ymin,ymax,linewidth,strokecolor,strokeopacity,fontfamily,fontcolor);
		3474	*/
		3475	fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[2] / double_data[3],double_data[5] - double_data[4] );
14208	schaersvoo	3476	string_length = 1 + snprintf(NULL,0,"\ndraw_numberline(%d,%d,%f,%f,%f,%f,%f,%f,%d,\"%s\",%f,\"%s\",\"%s\",%d); ",NUMBERLINE_CANVAS+numberline_cnt,use_axis_numbering,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],line_width,stroke_color,stroke_opacity,font_family,font_color,precision);
		3477	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11996	schaersvoo	3478	snprintf(tmp_buffer,string_length,"\ndraw_numberline(%d,%d,%f,%f,%f,%f,%f,%f,%d,\"%s\",%f,\"%s\",\"%s\",%d); ",NUMBERLINE_CANVAS+numberline_cnt,use_axis_numbering,double_data[0],double_data[1],double_data[2],double_data[3],double_data[4],double_data[5],line_width,stroke_color,stroke_opacity,font_family,font_color,precision);
11890	schaersvoo	3479	add_to_buffer(tmp_buffer);
		3480	numberline_cnt++;
		3481	break;
		3482	default:break;
		3483	}
		3484	}
		3485	reset();
		3486	break;
		3487
15541	schaersvoo	3488	case OBABEL:
		3489
		3490	/*
		3491	@ obabel x,y,type input,molecule smiles-code or file location, extra arguments,extra arguments,...
15633	bpr	3492	@ will call the ''obabel`` program, if installed.
15541	schaersvoo	3493	@ output will be an svg file
15686	reyssat	3494	@ see documentation of obabel for special keys
15541	schaersvoo	3495	@ command <a href='#affine'>affine</a> will produce CSS3 matrix transformations
		3496	@ command <a href='#rotate'>rotate</a> will rotate the object
17351	bpr	3497	@ can be set onclick: <code>javascript:read_dragdrop();</code> will return click numbers of mathml-objects<br>if 4 clickable object are drawn, the reply could be 1,0,1,0 ... meaning clicked on the first and third object
15541	schaersvoo	3498	@ can be set draggable: <code>javascript:read_dragdrop();</code> will return all coordinates in the same order as the canvas script: unmoved object will have their original coordinates...
17351	bpr	3499	@ snaptogrid is supported...snaptopoints will work, but use with care...due to the primitive dragging<br>technically: the dragstuff library is not used...the mathml is embedded in a new div element and not in the html5-canvas
		3500	@ external files may be loaded if they are present on the server or in the modules <br>for example:<br> obabel 0,0,mol,$module_dir/caffeine.mol,-P100,-xb none
15541	schaersvoo	3501	@%obabel_smi%size 400,400%xrange -10,10%yrange -10,10%fillcolor green%drag xy%centered%obabel 0,0,smi,-:c1cFccc1cc,-xb none,-xB blue,-xi,-xt,-xa,-xX,-xP180,-h
		3502	*/
		3503	js_function[DRAW_XML] = 1;
		3504	for(i=0;i<4;i++){
		3505	switch(i){
		3506	case 0: double_data[0]=get_real(infile,0);break; /* x in x/y-range coord system -> pixel width */
		3507	case 1: double_data[1]=get_real(infile,0);break; /* y in x/y-range coord system -> pixel height */
		3508	case 2: URL = get_string_argument(infile,0);break;
		3509	case 3:
		3510	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		3511	temp = getSVGMOL(URL,get_string(infile,1));
		3512	decimals = find_number_of_digits(precision);
		3513	if(use_affine == TRUE ){ transform(2,2);}
		3514	if( use_offset != 0 \|\| drag_type != -1 ){int_data[2] = 1;}else{int_data[2] = 0;} /* only centered or not-centered */
		3515	int_data[0] = x2px(double_data[0]);
		3516	int_data[1] = y2px(double_data[1]);
		3517	if( use_slider != -1 && onclick == 0 ){ onclick = 3;}/* no drag&onclick but slideable */
		3518	if( use_slider != -1 && drag_type > 0 ){ onclick = 5;}/* slider+drag*/
		3519	if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
		3520	string_length = 1 + snprintf(NULL,0,"var draw_xml%d = {id:%d,type:'svg',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};slidergroup[%d] = null;draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,object_cnt,drawxml_cnt);
		3521	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3522	snprintf(tmp_buffer,string_length, "var draw_xml%d = {id:%d,type:'svg',x:[%d],y:[%d],mathml:\"%s\",drag_type:%d,onclick:%d,object_cnt:%d,stroke_color:\"%s\",stroke_opacity:%.2f,fill_color:\"%s\",fill_opacity:%.2f,use_center:%d,use_snap:%d,angle:%f,fontfamily:\"%s\",transform:%s,use_affine:%d,offset:[0,0],use_slider:%s,rotation_center:%s,once:true};slidergroup[%d] = null;draw_xml(draw_xml%d);\n",drawxml_cnt,drawxml_cnt,int_data[0],int_data[1],temp,drag_type,onclick,object_cnt,stroke_color,stroke_opacity,fill_color,fill_opacity,int_data[2],use_snap,angle,font_family,doubledata2js_array(affine_matrix,6,decimals),use_affine,my_sliders,rotation_center,object_cnt,drawxml_cnt);
		3523	add_to_buffer(tmp_buffer);
		3524	if(onclick != 0 ){object_cnt++;}
		3525	drawxml_cnt++;/* keeps track on imported img,div,p,span,mathml,svg */
		3526	break;
		3527	default:break;
		3528	}
		3529	}
		3530	reset();
		3531	break;
		3532
11806	schaersvoo	3533	case OPACITY:
		3534	/*
13951	schaersvoo	3535	@ opacity [0-255],[0-255]
		3536	@ opacity [0.0 - 1.0],[0.0 - 1.0]
15715	schaersvoo	3537	@ alternative: transparent
11806	schaersvoo	3538	@ first item is stroke opacity, second is fill opacity
13951	schaersvoo	3539	@%opacity%size 400,400%xrange -10,10%yrange -10,10%opacity 255,0%fcircle -10,0,100,blue%opacity 250,50%fcircle -5,0,100,blue%opacity 200,100%fcircle 0,0,100,blue%opacity 150,150%fcircle 5,0,100,blue%opacity 100,200%fcircle 10,0,100,blue
11806	schaersvoo	3540	*/
		3541	for(i = 0 ; i<2;i++){
		3542	switch(i){
		3543	case 0: double_data[0]= get_real(infile,0);break;
		3544	case 1: double_data[1]= get_real(infile,1);break;
		3545	default: break;
		3546	}
		3547	}
15633	bpr	3548	if( double_data[0] > 255 \|\| double_data[1] > 255 \|\| double_data[0] < 0 \|\| double_data[1] < 0 ){ canvas_error("opacity [0 - 255], [0 - 255] ");}/* typo or non-RGB ? */
11997	schaersvoo	3549	if( double_data[0] > 1 ){ stroke_opacity = (double) (0.0039215double_data[0]); }else{ stroke_opacity = 0.0;} / 0.0 - 1.0 */
		3550	if( double_data[1] > 1 ){ fill_opacity = (double) (0.0039215double_data[1]); }else{ fill_opacity = 0.0;} / 0.0 - 1.0 */
11806	schaersvoo	3551	break;
		3552
		3553	case ONCLICK:
		3554	/*
		3555	@ onclick
		3556	@ keyword (no arguments required)
15111	schaersvoo	3557	@ if the next object is clicked, its ''object onclick_or_drag sequence number`` in fly script is returned by <code>javascript:read_canvas();</code>
14086	bpr	3558	@ onclick seqeuence numbering starts at ''0``, e.g. if there are 6 objects set onclick, the first onclick object will have id-number ''0``, the last id-number ''5``
17351	bpr	3559	@ line based objects will show an increase in line width<br>font based objects will show the text in ''bold`` when clicked.
14562	bpr	3560	@ the click zone (accuracy) is determined by 2× the line width of the object
14071	bpr	3561	@ onclick and <a href="#drag">drag x\|y\|xy</a> may be combined in a single flyscript (although a single object can <b>not</b> be onclick and draggable at the same time...)
11806	schaersvoo	3562	@ note: not all objects may be set onclick
12107	schaersvoo	3563	@%onclick%size 400,400%xrange -10,10%yrange -10,10%opacity 255,60%linewidth 3%onclick%fcircles blue,-3,3,1,1,2,2,3,1,1%onclick%ftriangles red,-4,-4,-4,0,-3,-2,0,0,4,0,2,-4%onclick%frects green,-4,4,-2,2,1,-1,3,-4
11806	schaersvoo	3564	*/
15111	schaersvoo	3565	fprintf(js_include_file,"use_dragdrop_reply = true;");
11806	schaersvoo	3566	onclick = 1;
15111	schaersvoo	3567	use_dragstuff=2;
		3568	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3569
		3570	break;
		3571
		3572	case PARALLEL:
		3573	/*
		3574	@ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
15611	schaersvoo	3575	@ affine transformations should be identical to flydraw
15613	schaersvoo	3576	@ in case of <a href='#rotate'>rotation</a> or <a href='#affine'>affine transformation </a>, command parallel will produce <em>n</em> individual segments, and these may be set ''onclick`` or ''drag xy`` individually.
		3577	@ in case of <em>no rotation or transformations</em> the lines can not be set ''onclick`` or ''drag xy``.
15629	bpr	3578	@ note: a large number of parallel lines (large <em>n</em>) may result in a canvasdraw error (...simplify your script...it produces too many lines...)
15611	schaersvoo	3579	@%parallel_click%size 400,400%xrange -10,10%yrange -10,10%parallel -5,5,-4,-5,0.25,0,40,red%rotate 45%onclick%parallel -5,5,-4,-5,0.25,0,40,blue
		3580	@%parallel%size 400,400%xrange -10,10%yrange -10,10%parallel -5,5,-4,-5,0.25,0,40,red
		3581	*/
15613	schaersvoo	3582	decimals = find_number_of_digits(precision);
15611	schaersvoo	3583	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		3584
15613	schaersvoo	3585	if( use_rotate == TRUE \|\| use_affine == TRUE ){
		3586	for( i = 0;i < 8; i++ ){
		3587	switch(i){
		3588	case 0: double_data[0] = get_real(infile,0);break; /* x1-values */
		3589	case 1: double_data[1] = get_real(infile,0);break; /* y1-values */
		3590	case 2: double_data[2] = get_real(infile,0);break; /* x2-values */
		3591	case 3: double_data[3] = get_real(infile,0);break; /* y2-values */
		3592	case 4: double_data[4] = get_real(infile,0);break; /* xv */
		3593	case 5: double_data[5] = get_real(infile,0);break; /* yv */
		3594	case 6: int_data[0] = (int) (get_real(infile,0));break; /* n */
		3595	case 7: stroke_color=get_color(infile,1);break;/* name or hex color */
		3596	default: break;
		3597	}
11806	schaersvoo	3598	}
15613	schaersvoo	3599	double_data[6] = double_data[0]; /* x1 */
15629	bpr	3600	double_data[7] = double_data[1]; /* y1 */
15613	schaersvoo	3601	double_data[8] = double_data[2]; /* x2 */
15629	bpr	3602	double_data[9] = double_data[3]; /* y2 */
15613	schaersvoo	3603	for(i = 0 ; i < int_data[0] ; i++){
15629	bpr	3604	double_data[0] = double_data[6] + i*double_data[4];
		3605	double_data[1] = double_data[7] + i*double_data[5];
		3606	double_data[2] = double_data[8] + i*double_data[4];
		3607	double_data[3] = double_data[9] + i*double_data[5];
15613	schaersvoo	3608	if(use_rotate == TRUE ){ rotate(4,angle,rotationcenter,2);}
		3609	if(use_affine == TRUE ){ transform(4,2);}
		3610	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3611	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3612	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3613	add_to_buffer(tmp_buffer);
		3614	if(onclick != 0){object_cnt++;}
		3615	}
		3616	dragstuff[4] = 1;
11806	schaersvoo	3617	}
15613	schaersvoo	3618	else /* use the old parallel version: calculations in javascript */
		3619	{
		3620	for( i = 0;i < 8; i++ ){
		3621	switch(i){
		3622	case 0: double_data[0] = get_real(infile,0);break; /* x1-values */
		3623	case 1: double_data[1] = get_real(infile,0);break; /* y1-values */
		3624	case 2: double_data[2] = get_real(infile,0);break; /* x2-values */
		3625	case 3: double_data[3] = get_real(infile,0);break; /* y2-values */
		3626	case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv */
		3627	case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv */
		3628	case 6: int_data[0] = (int) (get_real(infile,0));break; /* n */
		3629	case 7: stroke_color=get_color(infile,1);/* name or hex color */
		3630	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,11,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d,%d],[%d,%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3631	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3632	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,11,[%.f,%.f,%.f],[%.f,%.f,%.f],[%d,%d,%d],[%d,%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3633	add_to_buffer(tmp_buffer);
		3634	if(onclick != 0){object_cnt++;}
		3635	break;
		3636	default: break;
		3637	}
		3638	dragstuff[11] = 1;
		3639	}
		3640	}
15111	schaersvoo	3641	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
15613	schaersvoo	3642	reset();
11806	schaersvoo	3643	break;
15629	bpr	3644
11806	schaersvoo	3645	case PLOTSTEPS:
		3646	/*
		3647	@ plotsteps a_number
		3648	@ default 150
14066	bpr	3649	@ only used for commands <a href="#curve">curve / plot</a> and <a href="#levelcurve">levelcurve</a>
11806	schaersvoo	3650	@ use with care !
		3651	*/
		3652	plot_steps = (int) (get_real(infile,1));
		3653	break;
13829	bpr	3654
11806	schaersvoo	3655	case POINT:
		3656	/*
		3657	@ point x,y,color
15111	schaersvoo	3658	@ draw a single point at (x;y) in color 'color'
14246	bpr	3659	@ use command <code>linewidth int</code> to adjust size
11806	schaersvoo	3660	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
14071	bpr	3661	@ will not resize on zooming (command <code>circle x,y,r,color</code> will resize on zooming)
14066	bpr	3662	@ attention: in case of command <a href="#rotate">rotate angle</a> a point has rotation center (0:0) in x/y-range
12107	schaersvoo	3663	@%point%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 1%onclick%point 0,0,red%linewidth 2%onclick%point 1,1,blue%linewidth 3%onclick%point 3,3,green%linewidth 4%point 4,4,orange
11806	schaersvoo	3664	*/
		3665	for(i=0;i<3;i++){
		3666	switch(i){
		3667	case 0: double_data[0] = get_real(infile,0);break; /* x */
		3668	case 1: double_data[1] = get_real(infile,0);break; /* y */
		3669	case 2: stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	3670	if(use_rotate == TRUE ){rotate(2,angle,rotationcenter,2);}
		3671	if(use_affine == TRUE ){ transform(2,2);}
		3672	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		3673
11806	schaersvoo	3674	decimals = find_number_of_digits(precision);
15111	schaersvoo	3675	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,2,[%.f],[%.f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],1.5line_width,line_width,1.5line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3676	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3677	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,2,[%.f],[%.f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],1.5line_width,line_width,1.5line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3678	add_to_buffer(tmp_buffer);
		3679	/* object_cnt++; */
		3680	if(onclick != 0){object_cnt++;}
11806	schaersvoo	3681	break;
		3682	default: break;
		3683	}
		3684	}
15111	schaersvoo	3685	dragstuff[2] = 1;
		3686	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	3687	reset();
		3688	break;
		3689
		3690	case POINTS:
		3691	/*
		3692	@ points color,x1,y1,x2,y2,...,x_n,y_n
15111	schaersvoo	3693	@ draw multiple points at given coordinates in color 'color'
14246	bpr	3694	@ use command <code>linewidth int</code> to adjust size
11806	schaersvoo	3695	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
14066	bpr	3696	@ attention: in case of command <a href="#rotate">rotate angle</a> the points have rotation center (0:0) in x/y-range
12107	schaersvoo	3697	@%points_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%snaptogrid%linewidth 1%drag xy%points red,0,0,1,1,2,2,3,3%drag x%points blue,0,1,1,2,2,3,3,4
		3698	@%points_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,255%linewidth 1%onclick%points red,0,0,1,1,2,2,3,3%onclick%points blue,0,1,1,2,2,3,3,4
11806	schaersvoo	3699	*/
8363	schaersvoo	3700	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		3701	fill_color = stroke_color;
		3702	i=0;
		3703	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	3704	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8363	schaersvoo	3705	if(i%2 == 0 ){
		3706	double_data[i] = get_real(infile,0); /* x */
		3707	}
		3708	else
		3709	{
		3710	double_data[i] = get_real(infile,1); /* y */
		3711	}
		3712	i++;
		3713	}
15111	schaersvoo	3714	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		3715	if(use_affine == TRUE ){ transform(i-1,2);}
		3716	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8363	schaersvoo	3717	decimals = find_number_of_digits(precision);
11806	schaersvoo	3718	for(c = 0 ; c < i-1 ; c = c+2){
15111	schaersvoo	3719	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,2,[%.f],[%.f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],1.5line_width,line_width,1.5line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3720	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3721	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,2,[%.f],[%.f],[%.2f],[%d],%.2f,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],1.5line_width,line_width,1.5line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3722	add_to_buffer(tmp_buffer);
		3723	/* object_cnt++; */
		3724	if(onclick != 0){object_cnt++;}
8363	schaersvoo	3725	}
15111	schaersvoo	3726	dragstuff[2] = 1;
		3727	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8363	schaersvoo	3728	reset();
		3729	break;
11806	schaersvoo	3730
		3731	case POLY:
		3732	/*
		3733	@ poly color,x1,y1,x2,y2...x_n,y_n
		3734	@ polygon color,x1,y1,x2,y2...x_n,y_n
		3735	@ draw closed polygon
14071	bpr	3736	@ use command ''fpoly`` to fill it or use keyword <a href='#filled'>filled</a>
11806	schaersvoo	3737	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	3738	@%polygon_1%size 400,400%xrange -10,10%yrange -10,10%opacity 255,25%fillcolor orange%filled%linewidth 2%drag xy%snaptogrid%poly blue,0,0,1,3,3,1,2,4,-1,3
		3739	@%polygon_2%size 400,400%xrange -10,10%yrange -10,10%opacity 255,25%fillcolor orange%filled%linewidth 1%onclick%poly green,0,0,1,3,3,1,2,4,-1,3
11806	schaersvoo	3740	*/
		3741	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		3742	i=0;
		3743	c=0;
		3744	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	3745	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	3746	for( c = 0 ; c < 2; c++){
		3747	if(c == 0 ){
		3748	double_data[i] = get_real(infile,0);
		3749	i++;
		3750	}
		3751	else
		3752	{
		3753	double_data[i] = get_real(infile,1);
		3754	i++;
		3755	}
		3756	}
		3757	}
15111	schaersvoo	3758	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		3759	if(use_affine == TRUE ){ transform(i-1,2);}
		3760	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		3761
14066	bpr	3762	/* draw path: closed & optional filled */
15111	schaersvoo	3763	decimals = find_number_of_digits(precision);
		3764	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3765	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3766	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3767	add_to_buffer(tmp_buffer);
		3768	if(onclick != 0){object_cnt++;}
		3769	reset();
		3770	dragstuff[5] = 1;
		3771	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	3772	break;
		3773
7614	schaersvoo	3774	case POLYLINE:
		3775	/*
		3776	@ polyline color,x1,y1,x2,y2...x_n,y_n
10975	schaersvoo	3777	@ brokenline color,x1,y1,x2,y2...x_n,y_n
		3778	@ path color,x1,y1,x2,y2...x_n,y_n
14086	bpr	3779	@ remark: there is <b>no</b> command polylines \| brokenlines \| paths ... just use multiple commands <code>polyline, x1,y1,x2,y2...x_n,y_n</code>
17351	bpr	3780	@ remark: there are commands <code>userdraw path(s),color</code> and <code>userdraw polyline,color</code>... these are two entirely different things ! the path(s) userdraw commands may be used for freehand drawing(s)<br>the polyline userdraw command is analogue to this polyline\|brokenline command
10975	schaersvoo	3781	@ the command interconnects the points in the given order with a line (canvasdraw will not close the drawing: use command <a href="#poly">polygon</a> for this)
14071	bpr	3782	@ use command <a href='#segments'>segments</a> for a series of segments. These may be clicked/dragged individually
9406	schaersvoo	3783	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	3784	@%polyline_1%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%snaptogrid%polyline blue,0,0,1,3,3,1,2,4,-1,3
		3785	@%polyline_2%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%onclick%polyline green,0,0,1,3,3,1,2,4,-1,3
7614	schaersvoo	3786	*/
13829	bpr	3787
7614	schaersvoo	3788	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		3789	i=0;
		3790	c=0;
		3791	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	3792	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
7614	schaersvoo	3793	for( c = 0 ; c < 2; c++){
		3794	if(c == 0 ){
		3795	double_data[i] = get_real(infile,0);
		3796	i++;
		3797	}
		3798	else
		3799	{
		3800	double_data[i] = get_real(infile,1);
		3801	i++;
		3802	}
		3803	}
		3804	}
15111	schaersvoo	3805
		3806	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		3807	if(use_affine == TRUE ){ transform(i-1,2);}
		3808	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		3809
14066	bpr	3810	/* draw path: not closed & not filled */
7614	schaersvoo	3811	decimals = find_number_of_digits(precision);
15111	schaersvoo	3812	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3813	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		3814	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		3815	add_to_buffer(tmp_buffer);
		3816	if(onclick != 0){object_cnt++;}
		3817	/* object_cnt++;*/
8379	schaersvoo	3818	reset();
15111	schaersvoo	3819	dragstuff[4] = 1;
		3820	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	3821	break;
11806	schaersvoo	3822
		3823	case POPUP:
		3824	/*
		3825	@ popup
		3826	@ keyword (no arguments)
14086	bpr	3827	@ if fly-script starts with keyword ''popup``, the canvas image will be exclusively in a popup window (xsize px × ysize px)
14071	bpr	3828	@ if keyword ''popup`` is used after command <code>size xsize,ysize</code> the canvas will also be displayed in a popup window with size ''xsize × ysize``
15309	schaersvoo	3829	@ the popup window will be embedded into the page as a normal image, when ''status=done``; override with keyword <a href="#status">nostatus</a>
17351	bpr	3830	@ to access the read_canvas and read_dragdrop functions in a popup window, use:<br> <code> function read_all(){<br> if( typeof popup !== 'undefined' ){<br> var fun1 = popup['read_dragdrop'+canvas_scripts[0]];<br>var fun2 = popup['read_canvas'+canvas_scripts[0]];<br> popup.close();<br> return "dragdrop="+fun1()+"\\ncanvas="+fun2();<br> };</code>
		3831	@ to set a canvasdraw produced <a href="#clock">clock</a> or multiple clocks...use something like: <code>popup.set_clock(clock_id,type,diff);</code> as js-function for a button (or something else) in your document page.<br>where in <b>clock_id</b> starts with 0 for the first clock<br><b>type</b> is 1 for Hours,2 for Minutes and 3 for Seconds<br><b>diff</b> is the increment (positive or negative) per click
15313	schaersvoo	3832	@%popup%popup%size 400,400%xrange -2pi,2pi%yrange -5,5%precision 0%axis%axisnumbering%opacity 100,190%grid 1,1,grey,2,2,5,black%linewidth 4%fillcolor blue%trange -pi,pi%animate%linewidth 1%precision 1000%jsplot red,4cos(2x),2sin(3x-pi/6)%strokecolor green%functionlabel H(x)=%userinput function
11806	schaersvoo	3833	*/
		3834	use_tooltip = 2;
		3835	break;
		3836
		3837	case PROTRACTOR:
7614	schaersvoo	3838	/*
11806	schaersvoo	3839	@ protractor x,y,x_width,type,mode,use_a_scale
		3840	@ x,y are the initial location
14066	bpr	3841	@ x_width: give the width in x-coordinate system (e.g. not in pixels !)
17351	bpr	3842	@ type = 1: a triangle range 0 - 180<br>type = 2: a circle shape 0 - 360
		3843	@ mode: use -1 to set the protractor interactive (mouse movement of protractor)<br>use mode = '0° - 360°' to set the protractor with a static angle of some value
11806	schaersvoo	3844	@ if the value of the user_rotation angle is to be shown...use command <a href='#display'>display degree,color,fontsize</a><a href='#display'>display radian,color,fontsize</a>
14066	bpr	3845	@ use_scale = 1: the protractor will have some scale values printed; use_scale=0 to disable
11806	schaersvoo	3846	@ the rotating direction of the mouse around the protractor determines the clockwise/ counter clockwise rotation of the protractor...
14071	bpr	3847	@ commands ''stroke_color \| fill_color \| linewidth \| opacity \| font_family`` will determine the looks of the protractor.
17351	bpr	3848	@ default replyformat: reply[0] = x;reply[1] = y;reply[2] = angle_in_radians<br>use command ''precision`` to set the reply precision.
11806	schaersvoo	3849	@ if combined with a ruler, use replyformat = 32
14071	bpr	3850	@ command <code>snap_to_grid</code> may be used to assist the pupil at placing the protractor
17351	bpr	3851	@ when using command ''zoom``, pay <b>attention</b> to the size and symmetry of your canvas<br>...to avoid a partial image, locate the start position near the center of the visual canvas<br>technical: the actual ''protractor`` is just a static generated image in a new canvas-memory<br>This image is only generated once, and a copy of its bitmap is translated & rotated onto the visible canvas.<br>That is the reason for the ''high-speed dragging and rotating``.<br>I've limited its size to xsize × ysize e.g. the same size as the visual canvas...
11806	schaersvoo	3852	@ only one protractor allowed (for the time being)
17351	bpr	3853	@ usage: first left click on the protractor will activate dragging;<br>a second left click will activate rotating (just move mouse around)<br>a third click will freeze this position and the x/y-coordinate and angle in radians will be stored in reply(3)<br>a next click will restart this sequence...
15313	schaersvoo	3854	@%protractor%size 400,400%xrange -5,10%yrange -5,10%hline 0,0,black%vline 0,0,black%fillcolor orange%opacity 255,40%protractor 2,-2,6,0,-1,1,1%mouse red,22
7614	schaersvoo	3855	*/
11806	schaersvoo	3856	for( i = 0;i < 6; i++ ){
		3857	switch(i){
		3858	case 0: double_data[0] = get_real(infile,0);break; /* x-center */
		3859	case 1: double_data[1] = get_real(infile,0);break; /* y-center */
		3860	case 2: double_data[2] = get_real(infile,0);break; /* x-width */
		3861	case 3: int_data[0] = (int)(get_real(infile,0));break; /* type: 1==triangle 2 == circle */
		3862	case 4: int_data[1] = (int)(get_real(infile,0));break; /* passive mode == 0; active mode == -1 */
		3863	case 5: int_data[2] = (int)(get_real(infile,1)); /* use scale */
		3864	decimals = find_number_of_digits(precision);
11821	schaersvoo	3865	if( int_data[1] < 0 ){ js_function[JS_FIND_ANGLE] = 1;}
15111	schaersvoo	3866	add_js_protractor(int_data[0],double_data[0],double_data[1],double_data[2],font_family,stroke_color,stroke_opacity,fill_color,fill_opacity,line_width,int_data[2],int_data[1],use_snap);
11806	schaersvoo	3867
14208	schaersvoo	3868	string_length = 1 + snprintf(NULL,0,";protractor%d(); ",canvas_root_id);
		3869	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	3870	snprintf(tmp_buffer,string_length,";protractor%d(); ",canvas_root_id);
		3871	add_to_buffer(tmp_buffer);
		3872	reply_precision = precision;
		3873	/* no reply from protractor if non-interactive */
		3874	if( reply_format == 0 && int_data[1] == -1 ){reply_format = 30;}
15111	schaersvoo	3875	js_function[INTERACTIVE] = 1;
11806	schaersvoo	3876	break;
		3877	default: break;
		3878	}
		3879	}
		3880	break;
		3881
		3882	case PIXELS:
		3883	/*
		3884	@ pixels color,x1,y1,x2,y2,x3,y3...
		3885	@ draw rectangular "points" with diameter 1 pixel
		3886	@ pixels can <b>not</b> be dragged or clicked
14086	bpr	3887	@ "pixelsize = 1" may be changed by command <code>pixelsize int</code>
12111	schaersvoo	3888	@%pixels%size 400,400%opacity 255,255%pixelsize 5%pixels red,1,1,2,2,3,3,4,4,5,5,10,10,20,20,30,30,40,40,50,50,60,60,70,70,80,80,90,90,100,100,120,120,140,140,160,160,180,180,200,200,240,240,280,280,320,320,360,360,400,400%#NOTE pixelsize=5...otherwise you will not see them clearly...
11806	schaersvoo	3889	*/
15111	schaersvoo	3890	js_function[DRAW_PIXELS] = 1;
11806	schaersvoo	3891	stroke_color=get_color(infile,0);
7614	schaersvoo	3892	i=0;
		3893	c=0;
		3894	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	3895	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
7614	schaersvoo	3896	for( c = 0 ; c < 2; c++){
		3897	if(c == 0 ){
		3898	double_data[i] = get_real(infile,0);
		3899	i++;
		3900	}
		3901	else
		3902	{
		3903	double_data[i] = get_real(infile,1);
		3904	}
		3905	}
		3906	}
15111	schaersvoo	3907	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		3908	if(use_affine == TRUE ){ transform(i-1,2);}
11806	schaersvoo	3909	decimals = find_number_of_digits(precision);
		3910	/* double_xy2js_array(double xy[],int len,int decimals) /
14208	schaersvoo	3911	string_length = 1 + snprintf(NULL,0, "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
		3912	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	3913	snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
		3914	add_to_buffer(tmp_buffer);
		3915	reset();
7614	schaersvoo	3916	break;
11806	schaersvoo	3917
		3918	case PIXELSIZE:
7614	schaersvoo	3919	/*
11806	schaersvoo	3920	@ pixelsize int
		3921	@ in case you want to deviate from default pixelsize = 1(...)
12111	schaersvoo	3922	@ pixelsize 100 is of course a filled rectangle 100px × 100px
7614	schaersvoo	3923	*/
11806	schaersvoo	3924	pixelsize = (int) get_real(infile,1);
		3925	break;
8105	schaersvoo	3926
11806	schaersvoo	3927	case PIECHART:
7614	schaersvoo	3928	/*
11806	schaersvoo	3929	@ piechart xc,yc,radius,'data+colorlist'
14066	bpr	3930	@ (xc: yc) center of circle diagram in xrange/yrange
11806	schaersvoo	3931	@ radius in pixels
17351	bpr	3932	@ data+color list: a colon separated list of raw data and corresponding colours<br>canvasdraw will not check validity of colornames...<br>in case of trouble look into javascript debugging of your browser
14066	bpr	3933	@ example data+colorlist: 32:red:65:green:23:black:43:orange:43:yellow:14:white
11806	schaersvoo	3934	@ the number of colors must match the number of data.
17351	bpr	3935	@ if defined <a href='#fillpattern'>fillpattern some_pattern</a> then the pie pieces will be filled with the respective color and a fill pattern...<br>the pattern is cycled from the 4 pattern primitives: grid,hatch,diamond,dot,grid,hatch,diamond,dot,...
14086	bpr	3936	@ use command <a href='#opacity'>opacity</a> to adjust fill_opacity of colours
17351	bpr	3937	@ use command <a href='#legend'>legend</a> to automatically create a legend using the same colours as pie segments; unicode allowed in legend; expect javascript trouble if the amount of ''pie-slices``, ''pie-colors``, ''pie-legend-titles`` do not match, a javascript console is your best friend...<br>use command ''fontfamily`` to set the font of the legend.
14066	bpr	3938	@ use command <a href='centered'>centered</a> to place <a href='#legend'>legend</a> text inside the piechart. The text is using the same color as the pie segment: use (fill) opacity to enhance visibility.
12538	schaersvoo	3939	@%piechart_1%size 300,200%xrange -10,10%yrange -10,10%legend cars:motorcycles:bicycles:trikes%opacity 255,120%piechart -5,0,75,22:red:8:blue:63:green:7:purple%
15313	schaersvoo	3940	@%piechart_2%size 200,200%xrange -10,10%yrange -10,10%fontfamily 16px Arial%centered%legend cars:motorcycles:bicycles:trikes%opacity 255,60%piechart 0,0,100,22:red:8:blue:63:green:7:purple
7614	schaersvoo	3941	*/
15111	schaersvoo	3942	js_function[DRAW_PIECHART] = 1;
7614	schaersvoo	3943	for(i=0;i<5;i++){
		3944	switch(i){
11806	schaersvoo	3945	case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
14032	schaersvoo	3946	case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y */
11806	schaersvoo	3947	case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
		3948	case 3: temp = get_string(infile,1);
		3949	if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
14208	schaersvoo	3950	string_length = 1 + snprintf(NULL,0,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\",%d,%d);\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family,use_filled,use_offset);
		3951	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
12538	schaersvoo	3952	snprintf(tmp_buffer,string_length,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\",%d,%d);\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family,use_filled,use_offset);
11806	schaersvoo	3953	add_to_buffer(tmp_buffer);
		3954	break;
		3955	default:break;
7614	schaersvoo	3956	}
		3957	}
11806	schaersvoo	3958	reset();
7614	schaersvoo	3959	break;
16832	bpr	3960
15773	schaersvoo	3961	case RANGE:
		3962	/*
		3963	@ range xmin,xmax,ymin,ymax
		3964	@ if not given: 0,xsize,0,ysize (eg in pixels)
		3965	*/
		3966	for(i = 0 ; i<4; i++){
		3967	switch(i){
		3968	case 0: xmin = get_real(infile,0);break;
		3969	case 1: xmax = get_real(infile,1);break;
		3970	case 2: ymin = get_real(infile,0);break;
		3971	case 3: ymax = get_real(infile,1);break;
		3972	default: break;
		3973	}
		3974	}
		3975	if(xmin >= xmax){canvas_error(" xrange is not OK: xmin < xmax !");}
		3976	if(ymin >= ymax){canvas_error(" yrange is not OK: ymin < ymax !");}
		3977	fprintf(js_include_file,"var xmin = %f;var xmax = %f;var ymin = %f;var ymax = %f;",xmin,xmax,ymin,ymax);
		3978	found_size_command = found_size_command+2;
		3979	break;
8304	schaersvoo	3980
15773	schaersvoo	3981
7614	schaersvoo	3982	case RAYS:
		3983	/*
		3984	@ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
15111	schaersvoo	3985	@ draw rays in color 'color' and center (xc:yc)
7786	schaersvoo	3986	@ may be set draggable or onclick (every individual ray)
12111	schaersvoo	3987	@%rays_onclick%size 400,400%xrange -10,10%yrange -10,10%onclick%rays blue,0,0,3,9,-3,5,-4,0,4,-9,7,9,-8,1,-1,-9
		3988	@%rays_drag_xy%size 400,400%xrange -10,10%yrange -10,10%drag xy%rays blue,0,0,3,9,-3,5,-4,0,4,-9,7,9,-8,1,-1,-9
7614	schaersvoo	3989	*/
		3990	stroke_color=get_color(infile,0);
7786	schaersvoo	3991	fill_color = stroke_color;
		3992	double_data[0] = get_real(infile,0);/* xc */
		3993	double_data[1] = get_real(infile,0);/* yc */
		3994	i=2;
		3995	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	3996	if(i > MAX_INT - 1){canvas_error("in command rays too many points / rays in argument: repeat command multiple times to fit");}
7786	schaersvoo	3997	if(i%2 == 0 ){
		3998	double_data[i] = get_real(infile,0); /* x */
7614	schaersvoo	3999	}
7786	schaersvoo	4000	else
		4001	{
		4002	double_data[i] = get_real(infile,1); /* y */
7614	schaersvoo	4003	}
7786	schaersvoo	4004	fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
		4005	i++;
7614	schaersvoo	4006	}
15111	schaersvoo	4007	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		4008	if(use_affine == TRUE ){ transform(i-1,2);}
8224	bpr	4009	if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
		4010	decimals = find_number_of_digits(precision);
15111	schaersvoo	4011	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
7786	schaersvoo	4012	for(c=2; c<i;c = c+2){
15111	schaersvoo	4013	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[c],decimals,double_data[1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4014	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4015	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[c],decimals,double_data[1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4016	add_to_buffer(tmp_buffer);
		4017	/* object_cnt++; */
		4018	if(onclick != 0){object_cnt++;}
7614	schaersvoo	4019	}
		4020	reset();
15111	schaersvoo	4021	dragstuff[4] = 1;
		4022	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	4023	break;
8304	schaersvoo	4024
11806	schaersvoo	4025	case RECT:
8386	schaersvoo	4026	/*
11806	schaersvoo	4027	@ rect x1,y1,x2,y2,color
14071	bpr	4028	@ use command <code>frect x1,y1,x2,y2,color</code> for a filled rectangle
14246	bpr	4029	@ use command/keyword <a href='#filled'>filled</a> before command <code>rect x1,y1,x2,y2,color</code>
9406	schaersvoo	4030	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
15541	schaersvoo	4031	@ note: internally a rect is defined with 4 points. So when performing some affine transformation, other than translation, it will result in some morphing of the rectangle !<br/>this is a deviation of flydraw's rect&affine
12111	schaersvoo	4032	@%rect%size 400,400%xrange -10,10%yrange -10,10%rect 0,0,4,-4,green%rect 0,5,4,1,red
8386	schaersvoo	4033	*/
11806	schaersvoo	4034	for(i=0;i<5;i++){
		4035	switch(i){
		4036	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
		4037	case 1:double_data[1] = get_real(infile,0);break; /* y-values */
15111	schaersvoo	4038	case 2:double_data[4] = get_real(infile,0);break; /* x-values */
		4039	case 3:double_data[5] = get_real(infile,0);break; /* y-values */
11806	schaersvoo	4040	case 4:stroke_color = get_color(infile,1);/* name or hex color */
8386	schaersvoo	4041	decimals = find_number_of_digits(precision);
15111	schaersvoo	4042	double_data[2] = double_data[4];
		4043	double_data[3] = double_data[1];
		4044	double_data[6] = double_data[0];
		4045	double_data[7] = double_data[5];
		4046	/* using closed PATH (type=5) in stead of ctx.rect (type=1)!!!
		4047	0,1 2,3
		4048	6,7 4,5
		4049	x = [0,2,4,6]
		4050	y = [1,3,5,7]
		4051	*/
		4052	if(use_rotate == TRUE ){rotate(8,angle,rotationcenter,2);}
		4053	if(use_affine == TRUE ){ transform(8,2);}
		4054	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		4055	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[6],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],decimals,double_data[7],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4056	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4057	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[6],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],decimals,double_data[7],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4058	add_to_buffer(tmp_buffer);
		4059	if(onclick != 0){object_cnt++;}
		4060	/* object_cnt++; */
8386	schaersvoo	4061	reset();
		4062	break;
11806	schaersvoo	4063	}
		4064	}
15111	schaersvoo	4065	dragstuff[5] = 1;
		4066	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	4067	break;
8386	schaersvoo	4068
11806	schaersvoo	4069	case RECTS:
8304	schaersvoo	4070	/*
11806	schaersvoo	4071	@ rects color,x1,y1,x2,y2,.....
14071	bpr	4072	@ use command <code>frect color,x1,y1,x2,y2,.....</code> for a filled rectangle
14246	bpr	4073	@ use command/keyword <a href='#filled'>filled</a> before command <code>rects color,x1,y1,x2,y2,....</code>
14071	bpr	4074	@ use command <code>fillcolor color</code> before ''frects`` to set the fill colour.
9406	schaersvoo	4075	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
12111	schaersvoo	4076	@%rects%size 400,400%xrange -10,10%yrange -10,10%rects red,0,0,4,-4,0,5,4,1
8304	schaersvoo	4077	*/
15111	schaersvoo	4078	/* using closed PATH (type=5) in stead of ctx.rect (type=1)!!!
		4079	0,1 2,3 .....8,9 10,11.....
		4080	6,7 4,5 .....14,15 12,13.....
		4081	x = [0,2,4,6,8,10,12,14...]
		4082	y = [1,3,5,7,9,11,13,15...]
		4083	*/
8304	schaersvoo	4084	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		4085	fill_color = stroke_color;
		4086	i=0;
		4087	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	4088	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8304	schaersvoo	4089	if(i%2 == 0 ){
		4090	double_data[i] = get_real(infile,0); /* x */
		4091	}
		4092	else
		4093	{
		4094	double_data[i] = get_real(infile,1); /* y */
		4095	}
		4096	i++;
		4097	}
15111	schaersvoo	4098	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		4099	if(use_affine == TRUE ){ transform(i-1,2);}
		4100	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
15116	bpr	4101
8304	schaersvoo	4102	decimals = find_number_of_digits(precision);
		4103	for(c = 0 ; c < i-1 ; c = c+4){
15111	schaersvoo	4104	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+2],decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+1],decimals,double_data[c+3],decimals,double_data[c+3],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4105	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4106	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+2],decimals,double_data[c],decimals,double_data[c+1],decimals,double_data[c+1],decimals,double_data[c+3],decimals,double_data[c+3],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4107	add_to_buffer(tmp_buffer);
		4108	if(onclick != 0){object_cnt++;}
		4109	/* object_cnt++; */
8304	schaersvoo	4110	}
15111	schaersvoo	4111	dragstuff[5] = 1;
		4112	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
		4113	if(use_rotate == TRUE ){
		4114	rotate(i-1,angle,rotationcenter,2);
		4115	}
8304	schaersvoo	4116	reset();
		4117	break;
8386	schaersvoo	4118
11806	schaersvoo	4119	case REPLYFORMAT:
7614	schaersvoo	4120	/*
11806	schaersvoo	4121	@ replyformat number
		4122	@ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
		4123	@ default values should be fine !
14071	bpr	4124	@ use command <code>precision [0,1,10,100,1000,10000...]</code> before command ''replyformat`` to set the desired number of decimals in the student reply / drawing
14246	bpr	4125	@ the last value for ''precision int`` will be used to calculate the reply coordinates, if needed (read_canvas();)
17351	bpr	4126	@ choose<ul><li>replyformat 1: <code>x1,x2,x3,x4....x_n<br>y1,y2,y3,y4....y_n</code> x/y in pixels</li><li>replyformat 2: <code> x1,x2,x3,x4....x_n<br> y1,y2,y3,y4....y_n</code> x/y in xrange / yrange coordinate system</li><li>replyformat 3: <code> x1,x2,x3,x4....x_n<br> y1,y2,y3,y4....y_n<br> r1,r2,r3,r4....r_n</code> x/y in pixels, r in pixels</li><li>replyformat 4: <code> x1,x2,x3,x4....x_n<br> y1,y2,y3,y4....y_n<br> r1,r2,r3,r4....r_n</code> x/y in xrange / yrange coordinate system, r in pixels</li><li>replyformat 5: <code> Ax1,Ax2,Ax3,Ax4....Ax_n<br> Ay1,Ay2,Ay3,Ay4....Ay_n<br> Bx1,Bx2,Bx3,Bx4....Bx_n<br> By1,By2,By3,By4....By_n<br> Cx1,Cx2,Cx3,Cx4....Cx_n<br> Cy1,Cy2,Cy3,Cy4....Cy_n<br> ....<br> Zx1,Zx2,Zx3,Zx4....Zx_n<br> Zy1,Zy2,Zy3,Zy4....Zy_n</code> x/y in pixels</li><li>replyformat 6: <code> Ax1,Ax2,Ax3,Ax4....Ax_n<br> Ay1,Ay2,Ay3,Ay4....Ay_n<br> Bx1,Bx2,Bx3,Bx4....Bx_n<br> By1,By2,By3,By4....By_n<br> Cx1,Cx2,Cx3,Cx4....Cx_n<br> Cy1,Cy2,Cy3,Cy4....Cy_n<br> ....<br> Zx1,Zx2,Zx3,Zx4....Zx_n<br> Zy1,Zy2,Zy3,Zy4....Zy_n</code> x/y in xrange / yrange coordinate system</li><li>replyformat 7: <code> x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n</code> x/y in pixels</li><li>replyformat 8: <code> x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n</code> x/y in xrange / yrange coordinate system</li><li>replyformat 9: <code> x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n</code> x/y in pixels</li><li>replyformat 10: <code> x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n</code> x/y in xrange / yrange coordinate system</li><li>replyformat 11: <code> Ax1,Ay1,Ax2,Ay2<br>Bx1,By1,Bx2,By2<br> Cx1,Cy1,Cx2,Cy2<br> Dx1,Dy1,Dx2,Dy2<br> ......<br> Zx1,Zy1,Zx2,Zy2</code> x/y in xrange / yrange coordinate system</li><li>replyformat 12: <code> Ax1,Ay1,Ax2,Ay2<br> Bx1,By1,Bx2,By2<br>Cx1,Cy1,Cx2,Cy2<br> Dx1,Dy1,Dx2,Dy2<br> ......<br> Zx1,Zy1,Zx2,Zy2</code> x/y in pixels</li><li>replyformat 13: <code> Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2</code> x/y in xrange / yrange coordinate system</li><li>replyformat 14: <code> Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2</code> x/y in pixels</li><li>replyformat 15: reply from inputfields,textareas <code>reply1,reply2,reply3,...,reply_n</code></li><li>replyformat 16: mathml input fields</li><li>replyformat 17: read ''userdraw text,color`` only <code>x1,y1,text1 \\n x2,y2,text2...\\n...x_n,y_n,text_n </code> x/y-values are in xrange/yrange</li><li>replyformat 18: read_canvas() will read all interactive clocks in <code>H1:M1:S1,H2:M2:S2...Hn:Mn:Sn</code></li><li>replyformat 19: read_canvas() will return the object number of marked / clicked object (clock), analogue to (shape library) onclick command</li><li>replyformat 20: read_canvas() will reply "object_number:x:y" of external images: object_number of the first draggable external image in the fly-script starts with 0, e.g. expect something like 0:-5:4,1:6:2,2:-2:-5, the first image position is (-5:4), the second image position is (6:2) and the third image position is (-2:-5) <li>replyformat 21: <code> (x1:y1) (x2:y2) ... (x_n:y_n)</code> verbatim coordinate return</li><li>replyformat 22: returns an array .... <code>reply[0]=x1 reply[1]=y1 reply[2]=x2 reply[3]=y2 ... reply[n-1]=x_n reply[n]=y_n</code> x/y in xrange / yrange coordinate system</li><li>replyformat 23: can only be used for drawtype ''polyline``. A typical click sequence in drawtype polyline is x1,y1,x2,y2,x2,y2,x3,y3,x3,y3.....,x(n-1),y(n-1),x(n-1),y(n-1),xn,yn --replyformat 23 gives <code>x1,y1,x2,y2,x3,y3,.....x(n-1),y(n-1),xn,yn</code>; multiple occurences will be filtered out. The reply will be in x-y-range (xreply \\n yreply)</li><li>replyformat 24: read all inputfield values: even those set ''readonly``</li><li>replyformat 25: <code> angle1,angle2;...;angle_n</code> will return the radius (one or many) of the user drawn circle segment in degrees</li><li>replyformat 26: <code> rad1,rad2,...rad_n</code> will return the radius (one or many) of the user drawn circle segment in radians</li><li>replyformat 27: return (only) userdraw inputfields <code>x1,y1,text1<br> x2,y2,text2...<br>...x_n,y_n,textn</code></li><li>replyformat 28: <code> x1,y1,r1,x2,y2,r2...x_n,y_n,r_n</code> x / y / r in xrange / yrange coordinate system: may be used to reinput into command <code>circles color,x1,y1,r1,x2,y2,r2...x_n,y_n,r_n</code> will not return anything else (e.g. no inputfields, text etc)</li><li>replyformat 34: a special for OEF and dragging external images -included via commands <a href='#copy'>copy</a> or <a href='#copyresized'>copyresized</a> there will be an extra function <code>read_canvas_images()</code> for reading the coordinates of the images.<br>for now this is a unique function, e.g. there is no ''canvas id`` linked to it. (TO DO !!! 18/5/2019)</li></ul>
		4127	@ special replyformat = 100 ; will access to the raw javascript object data...use: read_dragdrop([property,property,...])<br>for example properies like 'clicked','text', 'angle' , 'x'
11806	schaersvoo	4128	*/
		4129	reply_format = (int) get_real(infile,1);
		4130	reply_precision = precision;
		4131	break;
		4132
		4133	case ROUNDRECT:
		4134	/*
		4135	@ roundrect x1,y1,x2,y2,radius in px,color
14071	bpr	4136	@ use command <code>froundrect x1,y1,x2,y2,radius,color</code> for a filled rectangle
		4137	@ use command/keyword <a href='#filled'>filled</a> before command <code>roundrect x1,y1,x2,y2,radius,color</code>
		4138	@ fillcolor will be identical to ''color``
9406	schaersvoo	4139	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12111	schaersvoo	4140	@%roundrect%size 400,400%xrange -10,10%yrange -10,10%roundrect 0,0,4,-4,20,green%roundrect 0,5,4,1,10,red
7614	schaersvoo	4141	*/
11806	schaersvoo	4142	for(i=0;i<6;i++){
		4143	switch(i){
		4144	case 0:double_data[0] = get_real(infile,0);break; /* x-values */
		4145	case 1:double_data[1] = get_real(infile,0);break; /* y-values */
		4146	case 2:double_data[2] = get_real(infile,0);break; /* x-values */
		4147	case 3:double_data[3] = get_real(infile,0);break; /* y-values */
		4148	case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
		4149	case 5:stroke_color = get_color(infile,1);/* name or hex color */
15111	schaersvoo	4150	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		4151	if(use_affine == TRUE ){ transform(2,4);}
		4152	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	4153	/* ensure no inverted roundrect is produced... */
		4154	if( double_data[0] > double_data[2] ){double_data[4] = double_data[0];double_data[0] = double_data[2];double_data[2] = double_data[4];}
		4155	if( double_data[3] > double_data[1] ){double_data[4] = double_data[1];double_data[1] = double_data[3];double_data[3] = double_data[4];}
7614	schaersvoo	4156	decimals = find_number_of_digits(precision);
15111	schaersvoo	4157	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,6,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4158	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4159	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,6,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4160	add_to_buffer(tmp_buffer);
		4161	if(onclick != 0){object_cnt++;}
		4162	/* object_cnt++;*/
8379	schaersvoo	4163	reset();
11806	schaersvoo	4164	break;
		4165	}
		4166	}
15111	schaersvoo	4167	dragstuff[6] = 1;
		4168	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	4169	break;
8386	schaersvoo	4170
11806	schaersvoo	4171	case ROUNDRECTS:
8347	schaersvoo	4172	/*
11806	schaersvoo	4173	@ roundrects color,radius in px,x1,y1,x2,y2,x3,y3,x4,y4,....
14066	bpr	4174	@ for filled roundrects use command/keyword <a href='#filled'>filled</a> before command
9406	schaersvoo	4175	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
13935	bpr	4176	@%roundrects%size 400,400%xrange -10,10%yrange -10,10%roundrects blue,5,0,0,4,-4,5,4,1,2
8347	schaersvoo	4177	*/
11806	schaersvoo	4178
8347	schaersvoo	4179	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
11806	schaersvoo	4180	int_data[0] = (int) (get_real(infile,0)); /* radius value in pixels */
8347	schaersvoo	4181	fill_color = stroke_color;
		4182	i=0;
		4183	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	4184	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
8347	schaersvoo	4185	if(i%2 == 0 ){
		4186	double_data[i] = get_real(infile,0); /* x */
		4187	}
		4188	else
		4189	{
		4190	double_data[i] = get_real(infile,1); /* y */
		4191	}
		4192	i++;
		4193	}
15111	schaersvoo	4194	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		4195	if(use_affine == TRUE ){ transform(i-1,2);}
		4196	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
8347	schaersvoo	4197	decimals = find_number_of_digits(precision);
		4198	for(c = 0 ; c < i-1 ; c = c+4){
11806	schaersvoo	4199	/* ensure no inverted roundrect is produced... */
		4200	if( double_data[c] > double_data[c+2] ){double_data[c+4] = double_data[c];double_data[c] = double_data[c+2];double_data[c+2] = double_data[c+4];}
		4201	if( double_data[c+3] > double_data[c+1] ){double_data[c+4] = double_data[c+1];double_data[c+1] = double_data[c+3];double_data[c+3] = double_data[c+4];}
15111	schaersvoo	4202	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,6,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4203	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4204	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,6,[%.f,%.f],[%.f,%.f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4205	add_to_buffer(tmp_buffer);
		4206	if(onclick != 0){object_cnt++;}
		4207	/* object_cnt++; */
8347	schaersvoo	4208	}
15111	schaersvoo	4209	dragstuff[6] = 1;
		4210	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
8347	schaersvoo	4211	reset();
		4212	break;
8386	schaersvoo	4213
11806	schaersvoo	4214	case RULER:
7614	schaersvoo	4215	/*
14078	bpr	4216	@ ruler x,y,x-width,y-height,mode
11806	schaersvoo	4217	@ x,y are the initial location
14078	bpr	4218	@ x-width, y-height are the ruler dimensions width & height in xy-coordinate system
14071	bpr	4219	@ the ruler scale is by definition the x-scale, set by command ''xrange``. For example: a ruler x-width of 6 will have a scale ranging from 0 to 6
17351	bpr	4220	@ mode: use -1 to set the ruler interactive (eg mouse movement of ruler; drag & rotate)<br>use mode = '0° - 360°' to set the ruler with a static angle of some value
11806	schaersvoo	4221	@ if combined with a protractor, use replyformat = 32
		4222	@ only one ruler allowed (for the time being)
15651	reyssat	4223	@ when using command ''zoom``, pay <b>attention</b> to the size and symmetry of your canvas to avoid a partial image, locate the start position near the center of the visual canvas; technical: the actual ''ruler`` is just a static generated image in a new canvas-memory. This image is only generated once, and a copy of its bitmap is translated & rotated onto the visible canvas. That is the reason for the ''high-speed dragging and rotating``. I have limited its size to xsize × ysize e.g. the same size as the visual canvas...
14247	bpr	4224	@ usage: first left click on the ruler will activate dragging; a second left click will activate rotating (just move mouse around), a third click will freeze this position and the x/y-coordinate and angle in radians will be stored in reply(3), a next click will restart this sequence...
15313	schaersvoo	4225	@%ruler_interactive%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler -9,0,10,2,-1%display degree,blue,22
		4226	@%ruler_set_degree_45%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler 0,0,10,2,45
		4227	@%ruler_set_degree_125%size 800,400%xrange -10,10%yrange -10,10%strokecolor blue%opacity 200,50%filled%fillcolor lightgrey%ruler 0,0,10,2,125
7614	schaersvoo	4228	*/
11806	schaersvoo	4229	for( i = 0;i < 5; i++ ){
7614	schaersvoo	4230	switch(i){
11806	schaersvoo	4231	case 0: double_data[0] = get_real(infile,0);break; /* x-center */
		4232	case 1: double_data[1] = get_real(infile,0);break; /* y-center */
		4233	case 2: double_data[2] = get_real(infile,0);break; /* x-width */
		4234	case 3: double_data[3] = get_real(infile,0);break; /* y-width */
		4235	case 4: int_data[0] = (int)(get_real(infile,1)); /* passive mode */
		4236	decimals = find_number_of_digits(precision);
		4237	if( int_data[0] < 0 ){
15116	bpr	4238	js_function[JS_FIND_ANGLE] = 1;
11806	schaersvoo	4239	}
15111	schaersvoo	4240	add_js_ruler(double_data[0],double_data[1],double_data[2],double_data[3],font_family,stroke_color,stroke_opacity,fill_color,fill_opacity,line_width,int_data[0],use_snap);
14208	schaersvoo	4241	string_length = 1 + snprintf(NULL,0,";ruler%d(); ",canvas_root_id);
		4242	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	4243	snprintf(tmp_buffer,string_length,";ruler%d(); ",canvas_root_id);
		4244	add_to_buffer(tmp_buffer);
		4245	reply_precision = precision;
		4246	/* no reply from ruler if non-interactive */
		4247	if( reply_format == 0 && int_data[0] == -1 ){reply_format = 31;}
7614	schaersvoo	4248	break;
		4249	default: break;
		4250	}
		4251	}
		4252	break;
8386	schaersvoo	4253
15111	schaersvoo	4254	case RESETOFFSET:
		4255	/*
		4256	@ resetoffset
		4257	@ keyword ; use to restore text placement on the canvas to the real (x;y) coordinates of the left bottom corner of the text
		4258	@ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-librariy
		4259	*/
		4260	use_offset = 0;
		4261	break;
11806	schaersvoo	4262
15111	schaersvoo	4263	case ROTATE:
		4264	/*
		4265	@ rotate rotation_angle
		4266	@ angle in degrees
		4267	@ (only) the next object will be rotated is given angle
		4268	@ positive values rotate counter clockwise
17351	bpr	4269	@ attention: all objects will be rotated around their first point...<br><code>rotate 45<br>triangle 1,1,5,1,3,4,red</code><br>will rotate 45 degrees around point (1:1)
		4270	@ if another rotation center is needed, use command <a href="#rotationcenter">rotationcenter xc,yc</a>.<br>to reset this rotationcenter, use keyword <a href="#killrotate">killrotate</a>
		4271	@ attention: rotate will mess up the interactivity of the rotated object <br>e.g. if combined with command <a href="#drag">drag xy</a> or keyword <a href="#onclick">onclick</a>: the mouse recognises the original -unrotated- coordinates of the object
15111	schaersvoo	4272	@%rotate_1%size 400,400%xrange -10,10%yrange -10,10%fpoly yellow,0,0,4,3,2,5%rotate 45%fpoly violet,0,0,4,3,2,5%killrotate%rotate 90%fpoly violet,0,0,4,3,2,5%
		4273	*/
		4274	use_rotate = TRUE;
		4275	angle = -1(get_real(infile,1));/ -1: to be compatible with Flydraw... */
		4276	break;
		4277	case ROTATION_CENTER:
		4278	/*
		4279	@ rotationcenter x_center,y_center
		4280	@ define an rotation center in your x/y-coordinate system
		4281	@ wims will not check the validity of your input; use javascript console to debug any erors
		4282	@ if not defined a rotation will be around the first point of an object
		4283	@ to be used before command <a href="#rotate">rotate</a>
		4284	@ use <a href="#killrotate">killrotate</a> to reset to 'null' <br/>(eg. the rotationcenter of the next object(s) will be the first (x;y) coordinate of the object(s))
		4285	@ all other commands will use this rotation center, unless a <a href="#killrotation">killrotation</a> is given
		4286	@%rotationcenter%size 400,400%xrange -5,10%yrange -5,10%circles green,3,3,4.25%rotationcenter 3,3%opacity 255,80%fpoly yellow,0,0,4,3,2,5%rotate 45%fpoly violet,0,0,4,3,2,5%rotate 90%fpoly lightblue,0,0,4,3,2,5%rotate 135%fpoly blue,0,0,4,3,2,5%rotate 180%fpoly orange,0,0,4,3,2,5%rotate 225%fpoly green,0,0,4,3,2,5%rotate 270%fpoly cyan,0,0,4,3,2,5%rotate 315%fpoly purple,0,0,4,3,2,5%linewidth 3%point 3,3,red%mouse red,22
15633	bpr	4287	@%rotationcenter_slider%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%fillcolor black%strokecolor yellow%rotationcenter 0,0%fontsize 28%slider 0,2pi,400,30,angle degrees active, rotate...%plot red,5sin(x)%filled%linewidth 1%opacity 150,50%fillcolor orange%angle 0,0,pi,0,0,blue
15111	schaersvoo	4288	*/
		4289	for( i = 0;i < 2; i++ ){
		4290	switch(i){
		4291	case 0: rotationcenter[0] = get_real(infile,0);break; /* x-center */
		4292	case 1: rotationcenter[1] = get_real(infile,1);break; /* y-center */
		4293	}
		4294	string_length = 1 + snprintf(NULL,0,"[%f,%f ]",rotationcenter[0],rotationcenter[1]);
		4295	check_string_length(string_length);
		4296	rotation_center = my_newmem(string_length);
		4297	snprintf(rotation_center,string_length,"[%f,%f]",rotationcenter[0],rotationcenter[1]);
		4298	}
		4299	break;
11806	schaersvoo	4300
		4301	case SIZE:
		4302	/*
		4303	@ size width,height
		4304	@ set canvas size in pixels
14066	bpr	4305	@ mandatory first command (can only be preceded by keyword <a href="#popup">popup</a>)
17351	bpr	4306	@ if xrange and/or yrange is not given the range will be set to pixels:<br>xrange 0,xsize yrange 0,ysize<br>note: lower left corner is origin (0:0) !!! this in contrast to flydraw
11806	schaersvoo	4307	*/
		4308	found_size_command = 1;
14066	bpr	4309	/* using fabs: however "xsize == int": so "xsize = abs( (int) get_real(infile,0))" would be the idea... */
11806	schaersvoo	4310	xsize = (int)(fabs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
		4311	ysize = (int)(fabs(round(get_real(infile,1))));
		4312	/* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
		4313	xmin = 0;xmax = xsize;
		4314	ymin = 0;ymax = ysize;
		4315
		4316	/*
		4317	The sequence in which stuff is finally printed is important !!
		4318	*/
		4319	fprintf(stdout,"\n\
13970	obado	4320	<script>\n\
11806	schaersvoo	4321	/<![CDATA[/\n\
		4322	if( typeof(wims_status) === 'undefined' ){ var wims_status = \"$status\";};\
		4323	if( typeof(use_dragdrop_reply) === 'undefined' ){ var use_dragdrop_reply = false;};\
		4324	if( typeof(canvas_scripts) === 'undefined' ){ var canvas_scripts = new Array();};\
		4325	canvas_scripts.push(\"%d\");\n/]]>/\n</script>\n\
		4326	",canvas_root_id);
		4327
		4328	/* style=\"display:block;position:relative;margin-left:auto;margin-right:auto;margin-bottom:4px;\" */
		4329	if( use_tooltip != 2){
16844	bpr	4330	fprintf(stdout,"<!-- canvasdraw div -->\n\
16845	bpr	4331	<div tabindex=\"0\" id=\"canvas_div%d\" style=\"max-width:%dpx;width:%dpx;height:%dpx\" class=\"canvas_wrapper\" oncontextmenu=\"return false;\">\
		4332	<canvas class=\"canvas_placeholder\" width=\"%d\" height=\"%d\"></canvas>\
		4333	</div>\n\
		4334	<!-- tooltip and input placeholder -->\n\
		4335	<div id=\"tooltip_placeholder_div%d\" style=\"text-align:center\">\
		4336	<span id=\"tooltip_placeholder%d\" class=\"tooltip_placeholder\"></span></div>\
		4337	<!-- include actual object code via include file -->\n\
		4338	<script id=\"canvas_script%d\" src=\"%s\" defer></script>\n",canvas_root_id,xsize,xsize,ysize,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,getfile_cmd);
		4339	} else {
11806	schaersvoo	4340	/*
14066	bpr	4341	set canvas_div invisible and do not include placeholder in main html page:
15111	schaersvoo	4342	the js-include will also be in a popup window...to be shown when wims $status = done
11806	schaersvoo	4343	*/
16844	bpr	4344	fprintf(stdout,"<!-- canvasdraw div invisible -->\n\
16845	bpr	4345	<div tabindex=\"0\" id=\"canvas_div%d\" class=\"canvas_wrapper\" style=\"display:none;max-width:%dpx;width:%dpx;height:%dpx;\">\
		4346	<canvas class=\"canvas_placeholder\" width=\"%d\" height=\"%d\"></canvas>\
		4347	</div>\n\
		4348	<div id=\"tooltip_placeholder_div%d\" style=\"display:none;position:relative;margin-left:auto;margin-right:auto;margin-bottom:4px;\">\
		4349	<span id=\"tooltip_placeholder%d\" class=\"tooltip_placeholder\"></span></div>\
		4350	<!-- include actual object code via include file -->\n\
		4351	<script id=\"canvas_script%d\" src=\"%s\"></script>\n",canvas_root_id,xsize,xsize,ysize,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,getfile_cmd);
11806	schaersvoo	4352	}
		4353
14071	bpr	4354	/* these must be global...it is all really very poor javascript:( */
15734	schaersvoo	4355	fprintf(js_include_file,"\n/* begin generated javascript include for canvasdraw version %s */\n\
11806	schaersvoo	4356	\"use strict\";\n\
15111	schaersvoo	4357	/* these variables and functions must be global */\
11806	schaersvoo	4358	var read_dragdrop%d;\
14038	schaersvoo	4359	var read_canvas_images;\
11806	schaersvoo	4360	var read_canvas%d;\
		4361	var set_clock;\
		4362	var clear_draw_area%d;\
		4363	var update_draw_area%d;\
14038	schaersvoo	4364	var place_image_on_canvas;\
11806	schaersvoo	4365	var draw_boxplot;\
		4366	var redraw_all%d;\
15111	schaersvoo	4367	var userdraw_primitive;\
		4368	var wims_canvas_function%d = function(){\n/* common used stuff */\
		4369	var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\
11806	schaersvoo	4370	var xsize = %d;\
		4371	var ysize = %d;\
		4372	var precision = 100;\
		4373	var canvas_div = document.getElementById(\"canvas_div%d\");\
		4374	var create_canvas%d = function(canvas_type,size_x,size_y){var cnv;if(document.getElementById(\"wims_canvas%d\"+canvas_type)){ cnv = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{try{ cnv = document.createElement(\"canvas\"); }catch(e){alert(\"Your browser does not support HTML5 CANVAS:GET FIREFOX !\");return;};canvas_div.appendChild(cnv);};cnv.width = size_x;cnv.height = size_y;cnv.style.top = 0;cnv.style.left = 0;cnv.style.position = \"absolute\";cnv.id = \"wims_canvas%d\"+canvas_type;return cnv;};\
		4375	function findPosX(i){ var obj = i;var curleft = 0;if(obj.offsetParent){while(1){curleft += obj.offsetLeft;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.x){curleft += obj.x;};};return curleft;};function findPosY(i){var obj = i;var curtop = 0;if(obj.offsetParent){while(1){curtop += obj.offsetTop;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.y){curtop += obj.y;};};return curtop;};\
15111	schaersvoo	4376	function x2px(x){if(use_xlogscale == 0 ){return parseFloat((x)xsize/(xmax - xmin) - xsizexmin/(xmax - xmin));}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_in = Math.log(x)/Math.log(xlogbase);return x_inxsize/(x_max - x_min) - xsizex_min/(x_max - x_min);};};\
11806	schaersvoo	4377	function px2x(px){if(use_xlogscale == 0 ){return parseFloat(px(xmax - xmin)/xsize + xmin);}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_out = x_min +px(x_max - x_min)/(xsize);return Math.pow(xlogbase,x_out);};};\
		4378	function px2y(py){if(use_ylogscale == 0 ){return parseFloat(ymax - py(ymax - ymin)/ysize);}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_out = y_max +py(y_min - y_max)/(ysize);return Math.pow(ylogbase,y_out);};};\
15111	schaersvoo	4379	function y2px(y){if(use_ylogscale == 0){return parseFloat(-1(y)ysize/(ymax - ymin) + ymaxysize/(ymax - ymin));}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_in = Math.log(y)/Math.log(ylogbase);return (y_max - y_in)ysize/(y_max - y_min);};};\
11806	schaersvoo	4380	function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
		4381	function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
		4382	function distance(x1,y1,x2,y2){return Math.sqrt( (x1-x2)(x1-x2) + (y1-y2)(y1-y2) );};\
		4383	function distance_to_line (r,q,x,y){var c = (y) - (-1/r)(x);var xs = r(c - q)/(rr+1);var ys = (r)(xs)+(q);return parseInt(Math.sqrt( (xs-x)(xs-x) + (ys-y)(ys-y) ));};\
		4384	function move(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = obj.x[p] + dx;obj.y[p] = obj.y[p] + dy;};return obj;};\
15111	schaersvoo	4385	var snap_x = 1;var snap_y = 1;\
11806	schaersvoo	4386	function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
11890	schaersvoo	4387	function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
15111	schaersvoo	4388	function multisnap_check(x,y,snap){switch(snap){case 1:return [snap_to_x(x),snap_to_y(y)];break;case 2:return [snap_to_x(x),y];break;case 3:return [x,snap_to_y(y)];break;case 4:return snap_to_points(x,y);break;case 5: return snap_to_fun(x,y);break;default: return [x,y];break;};};\
11806	schaersvoo	4389	var xlogbase = 10;\
		4390	var ylogbase = 10;\
		4391	var use_xlogscale = 0;\
		4392	var use_ylogscale = 0;\
11891	schaersvoo	4393	var x_strings = {};var x_strings_up = [];\
11806	schaersvoo	4394	var y_strings = null;\
		4395	var use_jsmath = 0;\
		4396	var xstart = 0;\
		4397	var ystart = 0;\
		4398	var unit_x=\" \";\
		4399	var unit_y=\" \";\
15111	schaersvoo	4400	var dragdrop_reply = [];\
15734	schaersvoo	4401	var external_canvas = create_canvas%d(%d,xsize,ysize);",VERSION,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,EXTERNAL_IMAGE_CANVAS);
15111	schaersvoo	4402	/* var xstart,ystart are normally 0 : in case of sgraph they have the 'jump' in the graph */
11806	schaersvoo	4403	break;
		4404
		4405
		4406	case SEGMENT:
7614	schaersvoo	4407	/*
11806	schaersvoo	4408	@ segment x1,y1,x2,y2,color
15715	schaersvoo	4409	@ alternative: seg
14071	bpr	4410	@ draw a line segment between points (x1:y1)--(x2:y2) in color ''color``
11806	schaersvoo	4411	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
14061	schaersvoo	4412	@%segment_onclick%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%segment 1,1,-9,3,green
		4413	@%segment_drag_y%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag y%segment 1,1,-9,3,green
7614	schaersvoo	4414	*/
11806	schaersvoo	4415	for(i=0;i<5;i++) {
7614	schaersvoo	4416	switch(i){
11806	schaersvoo	4417	case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
		4418	case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
		4419	case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
		4420	case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
		4421	case 4: stroke_color=get_color(infile,1);/* name or hex color */
15111	schaersvoo	4422	if(use_rotate == TRUE ){rotate(4,angle,rotationcenter,2);}
		4423	if(use_affine == TRUE ){ transform(4,2);}
		4424	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	4425	decimals = find_number_of_digits(precision);
15111	schaersvoo	4426	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4427	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4428	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4429	add_to_buffer(tmp_buffer);
		4430	if(onclick != 0){object_cnt++;}
		4431	/* object_cnt++; */
11806	schaersvoo	4432	reset();
		4433	break;
		4434	default: break;
7614	schaersvoo	4435	}
		4436	}
15111	schaersvoo	4437	dragstuff[4] = 1;
		4438	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	4439	break;
10953	bpr	4440
11806	schaersvoo	4441	case SEGMENTS:
9213	schaersvoo	4442	/*
11806	schaersvoo	4443	@ segments color,x1,y1,x2,y2,...,x_n,y_n
15715	schaersvoo	4444	@ alternative: segs
14071	bpr	4445	@ draw multiple segments between points (x1:y1)--(x2:y2).....and... (x_n-1:y_n-1)--(x_n:y_n) in color ''color``
15318	bpr	4446	@ use command ''linewidth int`` to adjust size
11806	schaersvoo	4447	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
12111	schaersvoo	4448	@%segments_onclick%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%segments green,1,1,3,3,0,0,-3,3,1,1,4,-1,-5,5,-3,-1
		4449	@%segments_drag_y%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag y%segments green,1,1,3,3,0,0,-3,3,1,1,4,-1,-5,5,-3,-1
9213	schaersvoo	4450	*/
11806	schaersvoo	4451	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		4452	fill_color = stroke_color;
		4453	i=0;
		4454	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	4455	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	4456	if(i%2 == 0 ){
		4457	double_data[i] = get_real(infile,0); /* x */
		4458	}
		4459	else
		4460	{
		4461	double_data[i] = get_real(infile,1); /* y */
		4462	}
		4463	i++;
		4464	}
15111	schaersvoo	4465	if(use_rotate == TRUE ){rotate(i-1,angle,rotationcenter,2);}
		4466	if(use_affine == TRUE ){ transform(i-1,2);}
		4467	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	4468	decimals = find_number_of_digits(precision);
		4469	for(c = 0 ; c < i-1 ; c = c+4){
15111	schaersvoo	4470	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4471	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4472	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4473	add_to_buffer(tmp_buffer);
		4474	if(onclick != 0){object_cnt++;}
		4475	/* object_cnt++;*/
11806	schaersvoo	4476	}
		4477	reset();
15111	schaersvoo	4478	dragstuff[4] = 1;
		4479	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
9213	schaersvoo	4480	break;
11806	schaersvoo	4481
		4482	case SETLIMITS:
9213	schaersvoo	4483	/*
11806	schaersvoo	4484	@ setlimits
14071	bpr	4485	@ keyword: if set, it will produce 4 inputfields for ''xmin,xmax,ymin,ymax`` and an ''ok`` button
11806	schaersvoo	4486	@ may be used for inputfield based zooming / panning
15111	schaersvoo	4487	@ may be styled using command <a href="#css">css</a>
14071	bpr	4488	@ use commands <a href="#xlabel">xlabel / ylabel</a> to change text from xmin to ''xlabel`` etc
14247	bpr	4489	@ note: the input value will not be checked on validity
12107	schaersvoo	4490	@%setlimits%size 400,400%xrange -10,10%yrange -10,10%precision 1%xlabel T%ylabel H%axis%axisnumbering%grid 2,2,grey,2,2,5,grey%precision 100%multistrokecolors red,green,blue,orange%multilinewidth 1,1,2,2%multistrokeopacity 0.6,0.7,0.8,0.9%jsplot red,1/x,-1,x,1/(x-3),1/(x+3)%setlimits
9213	schaersvoo	4491	*/
15111	schaersvoo	4492	js_function[JS_SAFE_EVAL] = 1;
		4493	js_function[JSPLOT_AND_ZOOM] = 1;
		4494	add_setlimits(font_size,css_class);
11806	schaersvoo	4495	done = TRUE;
9213	schaersvoo	4496	break;
11806	schaersvoo	4497
		4498	case SETPIXEL:
9213	schaersvoo	4499	/*
11806	schaersvoo	4500	@ setpixel x,y,color
		4501	@ A rectangular "point" with diameter 1 pixel centered at (x:y) in xrange / yrange
		4502	@ pixels can <b>not</b> be dragged or clicked
14086	bpr	4503	@ "pixelsize = 1" may be changed by command <code>pixelsize int</code>
12107	schaersvoo	4504	@%setpixel%size 400,400%xrange -10,10%yrange -10,10%setpixel 1,1,red%pixelsize 2%setpixel 2,2,green%pixelsize 3%setpixel 3,3,blue%
9213	schaersvoo	4505	*/
15111	schaersvoo	4506	js_function[DRAW_PIXELS] = 1;
11806	schaersvoo	4507	for(i=0;i<3;i++){
		4508	switch(i){
		4509	case 0: double_data[0] = get_real(infile,0); break; /* x */
14162	bpr	4510	case 1: double_data[1] = get_real(infile,0); break; /* y */
11806	schaersvoo	4511	case 2: stroke_color = get_color(infile,1);
14208	schaersvoo	4512	string_length = 1 + snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
		4513	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	4514	snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
		4515	add_to_buffer(tmp_buffer);
		4516	break;
		4517	default:break;
		4518	}
		4519	}
		4520	reset();
		4521	break;
		4522	case SLIDER:
9213	schaersvoo	4523	/*
14071	bpr	4524	@ slider start_value,end_value,width px,height px,type,label
15655	schaersvoo	4525	@ type may be: ''x,y,angle``
		4526	@ if a slider value display is desired, use for argument ''type``: ''x display``, ''y display``, ''angle radian``, ''angle degree``
15651	reyssat	4527	@ is the slider is used for animation, add keyword ''anim`` or ''animate`` to ''type``; for now only one animated slider may be used...
17351	bpr	4528	@ default behaviour is: click on an object to use its slider(s)<br/>to use sliders without clicking on an object, use for ''type`` keyword ''active``<br>eg: <code>slider -2pi,2pi,300,30,angle degree active,Rotate</code>
14071	bpr	4529	@ if a unit (or something like that...) for x/y-value display is needed, use commands ''xunit`` and / or ''yunit``
17351	bpr	4530	@ if the translation should be performed using a function, use for type: ''x function``, ''y function``<br>use commands ''sliderfunction_x`` and/or ''sliderfunction_y`` before the slider command to define the functions. Example:<code>sliderfunction_x x^2<br>sliderfunction_y y^2<br>slider -5,5,100,100,xy function,Some_Text<br>...some stuff to slide<br>killslider<br>sliderfunction_x x^2-2<br>slider -15,15,100,10,x function,Some_Other_Text<br>...more stuff to slide<br>killslider... etc</code>
14071	bpr	4531	@ use command ''slider`` before draggable/clickable objects.
17351	bpr	4532	@ drag and drop may be combined with rotation slider<br>for example an arrow rotated by a slider may be placed anywhere (drag&drop)<br><code>size 300,300<br>xrange -5,5<br>yrange -5,5<br>grid 1,1,grey<br>linewidth 3<br>drag xy<br>fillcolor orange<br>strokecolor blue<br>slider 0,2*pi,250,30,angle degrees,Rotate arrow<br>arrow 2,2,5,5,8,red</code><br>note: except a combination 'drag' and 'slider' for command 'latex, katex, mathml, html, obabel'
14071	bpr	4533	@ no slider for a math function, these can be traced using command ''trace_jscurve some_function_in_x``
17351	bpr	4534	@ a slider will affect all draggable objects after the ''slider`` command...<br>and can be used to group translate / rotate several objects...<br>until a next ''slider`` or keyword ''killslider``
11806	schaersvoo	4535	@ amount of sliders is not limited.
14208	schaersvoo	4536	@ a slider can not be set ''snaptogrid`` or other ''snapto*`` : you may always use 'drag xy' in combination with the slider objects
14071	bpr	4537	@ <code>javascript:read_dragdrop();</code> will return an array with ''object_number:slider_value``
11806	schaersvoo	4538	@ every draggable object may have its own slider (no limit in amount of sliders)
17351	bpr	4539	@ label: some slider text. <br>Note: on <a target='new' href='https://katex.org'>KaTeX</a> enabled wims, TeX produced by wims command ''mathmlmath``, is allowed.
15111	schaersvoo	4540	@ use fillcolor for slider controlkey
11806	schaersvoo	4541	@ use strokecolor for slider bar
		4542	@ use fontfamily / fontcolor to set used fonts
		4543	@ use opacity (only fill opacity will be used) to set transparency
14071	bpr	4544	@ the slider canvas will be added to the ''tooltip div``: so incompatible with command tooltip ; setlimits etc
15655	schaersvoo	4545	@%slider_x_y_angle%%size 300,300%xrange -5,5%yrange -5,5%grid 1,1,grey%linewidth 3%fillcolor orange%strokecolor blue%slider 0,2*pi,300,30,angle active degrees,Rotate arrow%arrow 0,0,4.5,0,8,red%killslider%opacity 200,100%slider -2,2,300,30,x active,move blue rectangle%frect -4,4,1,-1,blue%killslider%linewidth 2%slider -2,2,300,30,y,move green rectangle%frect -4,4,1,-1,green
15633	bpr	4546	@%slider_click%%size 300,300%xrange -6,6%yrange -6,6%grid 1,1,grey%linewidth 2%slider 0,2*pi,300,28,angle degree, name%fillcolor lightgreen%#CLICK ON THE OBJECTS TO ACTIVATE%opacity 255,30%ftriangle 2,2,-2,2,0,0,red%ftriangle -2,2,-2,-2,0,0,blue%ftriangle -2,-2,2,-2,0,0,green%ftriangle 2,-2,2,2,0,0,orange%rotationcenter 0,0%frect -2,2,2,-2,black
		4547	@%slider_active%%size 300,300%xrange -6,6%yrange -6,6%grid 1,1,grey%linewidth 1%slider 0,2*pi,300,28,angle degree active, name%fillcolor lightgreen%opacity 255,30%ftriangle 2,2,-2,2,0,0,red%ftriangle -2,2,-2,-2,0,0,blue%ftriangle -2,-2,2,-2,0,0,green%ftriangle 2,-2,2,2,0,0,orange%rotationcenter 0,0%frect -2,2,2,-2,black
		4548	@%slider_animate%%size 300,300%xrange -6,6%yrange -6,6%grid 1,1,grey%linewidth 1%slider 0,2*pi,300,28,angle anim active, name%fillcolor lightgreen%opacity 255,30%ftriangle 2,2,-2,2,0,0,red%ftriangle -2,2,-2,-2,0,0,blue%ftriangle -2,-2,2,-2,0,0,green%ftriangle 2,-2,2,2,0,0,orange%rotationcenter 0,0%frect -2,2,2,-2,black
17351	bpr	4549	@%slider_html_image%%size 400,400%xrange -6,6%yrange -6,6%bgcolor white%grid 1,1,grey%linewidth 1%slider 0,2*pi,300,28,angle active degree,%centered%html 0,0,<img src="gifs/domains/sciences/flasks.svg" width="100px" height="100px">
9213	schaersvoo	4550	*/
16832	bpr	4551	js_function[INTERACTIVE] = 1;
14208	schaersvoo	4552	int_data[2] = 0; /* --> show_display = 0; */
11806	schaersvoo	4553	for(i=0; i<6 ; i++){
		4554	switch(i){
		4555	case 0: double_data[0] = get_real(infile,0);break; /* start value */
		4556	case 1: double_data[1] = get_real(infile,0);break; /* end value */
		4557	case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
		4558	case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
15655	schaersvoo	4559	case 4: temp = get_string_argument(infile,0); /* type: x,y,angle */
15111	schaersvoo	4560	if( strstr(temp,"displ")!=0 \|\| strstr(temp,"deg")!=0 \|\| strstr(temp,"rad")!=0 ){int_data[5] = 1; }else{int_data[5] = 0;}
		4561	if(strstr(temp,"anim")!= 0){int_data[3] = 1;}else{int_data[3] = 0;}
		4562	if(strstr(temp,"active")!= 0){onclick = 4;}else{onclick=0;}
14208	schaersvoo	4563	if(strstr(temp,"angle")!= 0){slider_type="R";if( strstr(temp,"rad")!= 0){int_data[2] = 3;}if( strstr(temp,"deg")!= 0){int_data[2] = 4;}}
11806	schaersvoo	4564	else
14208	schaersvoo	4565	if(strstr(temp,"xy") != 0){slider_type = "XY";if( strstr(temp,"disp")!= 0){int_data[2] = 5;}}
11806	schaersvoo	4566	else
14208	schaersvoo	4567	if(strstr(temp,"x") != 0){slider_type = "X";if( strstr(temp,"disp")!= 0){int_data[2] = 1;}}
		4568	else
		4569	if(strstr(temp,"y") != 0){slider_type = "Y";if( strstr(temp,"disp")!= 0){int_data[2] = 2;}}
		4570	else
15655	schaersvoo	4571	canvas_error("slider can be of type: x,y,angle,fun_x:fun_y");
14208	schaersvoo	4572	break;
15655	schaersvoo	4573	case 5: temp = get_string_argument(infile,1); if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\""," ");}
16832	bpr	4574	/* slider label : in case of latex/mathmlmath we need to remove the extra " */
15655	schaersvoo	4575	break;
11806	schaersvoo	4576	}
		4577	}
15111	schaersvoo	4578
		4579	if(use_slider == -1 ){ /* add once */
		4580	add_slider(int_data[3]);
		4581	if(int_data[5] == 1 ){add_slider_display(precision,font_size,font_color,stroke_opacity);}
14208	schaersvoo	4582	}
15111	schaersvoo	4583	use_slider++;
		4584	if(int_data[3] == 0){\
		4585	string_length = 1 + snprintf(NULL,0,"slider%d = new slider(\"%s\",\"%s\",%d,%d,%d,%d,\"%s\",\"%s\",[%f,%f],%f,%f,'%s',%d);\n",use_slider,slider_type,temp,use_slider,int_data[0],int_data[1],line_width,fill_color,stroke_color,fill_opacity,stroke_opacity,double_data[0],double_data[1],font_family,int_data[2]);
		4586	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4587	snprintf(tmp_buffer,string_length ,"slider%d = new slider(\"%s\",\"%s\",%d,%d,%d,%d,\"%s\",\"%s\",[%f,%f],%f,%f,'%s',%d);\n",use_slider,slider_type,temp,use_slider,int_data[0],int_data[1],line_width,fill_color,stroke_color,fill_opacity,stroke_opacity,double_data[0],double_data[1],font_family,int_data[2]);
		4588	}else{
		4589	string_length = 1 + snprintf(NULL,0,"slider%d = new animslider(\"%s\",\"%s\",%d,%d,%d,%d,\"%s\",\"%s\",[%f,%f],%f,%f,'%s',%d);\n",use_slider,slider_type,temp,use_slider,int_data[0],int_data[1],line_width,fill_color,stroke_color,fill_opacity,stroke_opacity,double_data[0],double_data[1],font_family,int_data[2]);
		4590	add_slider(int_data[3]);/* use only once !! */
		4591	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4592	snprintf(tmp_buffer,string_length ,"slider%d = new animslider(\"%s\",\"%s\",%d,%d,%d,%d,\"%s\",\"%s\",[%f,%f],%f,%f,'%s',%d);\n",use_slider,slider_type,temp,use_slider,int_data[0],int_data[1],line_width,fill_color,stroke_color,fill_opacity,stroke_opacity,double_data[0],double_data[1],font_family,int_data[2]);
		4593	}
14208	schaersvoo	4594	add_to_buffer(tmp_buffer);
15111	schaersvoo	4595	fprintf(js_include_file,"var slider%d;",use_slider);
		4596	use_dragstuff = 2;
		4597	// dragstuff[22] = 1; /* dragstuff switch no 22 is a slider...*/
		4598	if(onclick != 4 ){ js_function[INTERACTIVE] = 1; }/* no need to click on object to use slider... */
		4599	//js_function[JS_ROTATE_MOUSE] = 1;
		4600	c = 0;
		4601	for(i=last_slider;i<=use_slider;i++){
		4602	int_data[c] = i; c++;
		4603	}
		4604	my_sliders = data2js_array(int_data,use_slider - last_slider+1);
14208	schaersvoo	4605	break;
		4606
11806	schaersvoo	4607	case SGRAPH:
		4608	/*
		4609	@ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
14071	bpr	4610	@ primitive implementation of a ''broken scale`` graph...
17351	bpr	4611	@ not very versatile: only usable in combination with userdraw <br>eg no other objects will obey this "coordinate system"<br>if you want to place an object into this coordinate system, be aware that 10% or 20% of xsize and/or ysize is ''lost``.<br>Use these "formulas" to recalculate the virtual coordinates:<br>factor=0.8 in case xstart != xmin (or ystart != ymin)<br>factor=0.9 in case xstart = xmin (or ystart = ymin)<br>px_x_point = ((factorxsize)/(xmax - xstart))(x_point - xmax)+xsize<br>x_recalculated = px(xmax - xmin)/xsize + $xmin<br>px_y_point = -1factory_pointysize/(ymax - ystart) + ymaxfactorysize/(ymax - ystart)<br>y_recalculated = ymax - py*(ymax - ymin)/ysize<br>
12111	schaersvoo	4612	@%sgraph%size 400,400%xrange 0,10000%yrange 0,100%sgraph 9000,50,100,10,4,4,grey,blue%userinput_xy%linewidth 2%userdraw segments,red%precision 0%mouse blue,22
11806	schaersvoo	4613	*/
15111	schaersvoo	4614	js_function[DRAW_SGRAPH] = 1;
11806	schaersvoo	4615	for(i = 0 ; i < 8 ;i++){
		4616	switch(i){
		4617	case 0:double_data[0] = get_real(infile,0);break;
		4618	case 1:double_data[1] = get_real(infile,0);break;
		4619	case 2:double_data[2] = get_real(infile,0);break;
		4620	case 3:double_data[3] = get_real(infile,0);break;
		4621	case 4:int_data[0] = (int)(get_real(infile,0));break;
		4622	case 5:int_data[1] = (int)(get_real(infile,0));break;
		4623	case 6:stroke_color = get_color(infile,0);break;
		4624	case 7:font_color = get_color(infile,1);
14208	schaersvoo	4625	string_length = 1 + snprintf(NULL,0,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
		4626	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	4627	snprintf(tmp_buffer,string_length,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
		4628	add_to_buffer(tmp_buffer);
		4629	break;
		4630	default:break;
		4631	}
		4632	}
		4633	/* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
9213	schaersvoo	4634	break;
11806	schaersvoo	4635	case SNAPTOFUNCTION:
9213	schaersvoo	4636	/*
11806	schaersvoo	4637	@ snaptofunction some_function_in_x,some_funtion_in_y
15715	schaersvoo	4638	@ alternative: snaptofun
11806	schaersvoo	4639	@ the next object will snap to the calculated values
14071	bpr	4640	@ note: snaptofun is probably not really useful feature...
14066	bpr	4641	@ if you want only modification of y-values,just use: <code>snaptofunction x,5*sin(1/y)</code>
		4642	@ if you want only modification of x-values,just use: <code>snaptofunction 5*sin(1/x),y</code>
14071	bpr	4643	@ for now only one instance of ''snaptofunction`` is allowed
11806	schaersvoo	4644	@ use rawmath on your functions: no validity checking is done by wims !
14071	bpr	4645	@ note: switching x and y coordinates? <code>snaptofunction y,x</code>
13960	bpr	4646	@%snaptofunction_1%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%snaptofunction x,5sin(x)%linewidth 3%crosshairsize 6%userdraw crosshairs,red%linewidth 2%curve blue,5sin(x)%xunit = x-value%display x,blue,22
		4647	@%snaptofunction_2%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 100%snaptofunction y^2-9,y%#snaptofunction y^2-9,abs(y)%linewidth 3%crosshairsize 6%userdraw crosshairs,red%linewidth 2%curve blue,sqrt(x+9)%curve blue,-1*sqrt(x+9)%yunit = y-value%display y,blue,22
9213	schaersvoo	4648	*/
11806	schaersvoo	4649	temp = get_string_argument(infile,0);
14038	schaersvoo	4650	use_snap = 2;
15111	schaersvoo	4651	use_snap = 5;
		4652	js_function[JS_MATH] = 1;
11806	schaersvoo	4653	fprintf(js_include_file,"var snap_fun = {x:to_js_math('%s'),y:to_js_math('%s')};function snap_to_fun(px,py){ var x = px2x(px); var y = px2y(py); return [ x2px(eval(snap_fun.x)) , y2px(eval(snap_fun.y)) ];};",temp,get_string(infile,1));
		4654	break;
		4655	case SNAPTOPOINTS:
		4656	/*
		4657	@ snaptopoints x1,y1,x2,y2,x3,y3....
		4658	@ a userdraw object will snap to these points.
17583	schaersvoo	4659	@ the array size (e.g. the number of points) of command ''snaptopoints`` is limited by constant MAX_INT (canvasdraw.h)<br/>this command may be repeated multiple times (no limit) to add points
14162	bpr	4660	@ a draggable object (use command ''drag x\|y\|xy``) will snap to the closed of these points when dragged (mouseup)
14078	bpr	4661	@ other options: use keyword ''snaptogrid``, ''xsnaptogrid`` or ''ysnaptogrid``
13950	schaersvoo	4662	@%snaptopoints%size 400,400%xrange -5,5%yrange -5,5%snaptopoints -1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%linewidth 2%points red,-1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%userdraw arrows,red
16872	schaersvoo	4663	@%snaptopoints%size 400,400%xrange -5,5%yrange -5,5%snaptopoints -1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%linewidth 3%%points blue,-1,-3,-1,-2,-1,0,-1,1,-1,2,-1,3,1,-3,1,-2,1,-1,1,0,1,1,1,2,1,3%drag xy%ftriangle -4,0,-2,3,0,0,red
11806	schaersvoo	4664	*/
		4665	i = 0;
		4666	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	4667	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	4668	if(i%2 == 0 ){
		4669	double_data[i] = get_real(infile,0); /* x */
		4670	}
		4671	else
		4672	{
		4673	double_data[i] = get_real(infile,1); /* y */
		4674	}
		4675	i++;
		4676	}
		4677	decimals = find_number_of_digits(precision);
17583	schaersvoo	4678	/* NEED AN EXTRA COUNTER VARIABLE FOR MORE THAN 2 CALLS */
		4679	fprintf(js_include_file,"if( temp_push_array === 'undefined' ){var temp_push_array;};if( points_to_snap_on === 'undefined' ){var points_to_snap_on;};var temp_push_array = [%s];\n",double_xy2js_array(double_data,i,decimals));
		4680	if( snap_to_points_cnt == 0 ){
		4681	fprintf(js_include_file,"points_to_snap_on = temp_push_array;function find_min_diff(x,y,X,Y){var diff = 100000000;var chk;var idx = 0;var p = 0;while(X[p] != null){chk = distance(x,y,X[p],Y[p]);if( chk < diff ){ diff = chk; idx = p;};p++;};return idx;};function snap_to_points(x,y){x = px2x(x); y = px2y(y);var xpoints = points_to_snap_on[0];var ypoints = points_to_snap_on[1];var idx = find_min_diff(x,y,xpoints,ypoints);x = xpoints[idx];y = ypoints[idx];return [x2px(x),y2px(y)];};");
		4682	}else{
		4683	fprintf(js_include_file,"points_to_snap_on[0].push.apply(points_to_snap_on[0],temp_push_array[0]);points_to_snap_on[1].push.apply(points_to_snap_on[1],temp_push_array[1]);");
		4684	}
		4685	snap_to_points_cnt = 1; /* do not repeat including the js-functions...just once*/
		4686	use_snap = 4;
11806	schaersvoo	4687	break;
		4688
		4689	case SNAPTOGRID:
		4690	/*
		4691	@ snaptogrid
		4692	@ keyword (no arguments required)
14162	bpr	4693	@ a draggable object (use command ''drag x\|y\|xy``) will snap to the given grid when dragged (mouseup)
11806	schaersvoo	4694	@ in case of userdraw the drawn points will snap to xmajor / ymajor grid
14078	bpr	4695	@ if no grid is defined, points will snap to every integer xrange/yrange value. (eg snap_x=1,snap_y=1)
14071	bpr	4696	@ if you do not want a visible grid, but you only want a ''snaptogrid`` with some value...define this grid with opacity 0.
17351	bpr	4697	@ if xminor / yminor is defined,(use keyword ''axis`` to activate the minor steps) the drawing will snap to xminor and yminor<br>use only even dividers in x/y-minor...for example <code>snaptogrid<br>axis<br>grid 2,1,grey,4,4,7,red</code> will snap on x=0, x=0.5, x=1, x=1.5 .... will snap on y=0, y=0.25 y=0.5 y=0.75 ...
12311	schaersvoo	4698	@%snaptogrid_1%size 400,400%xrange -5,5%yrange -5,5%axis%axisnumbering%precision 1%grid 1,1,grey,2,2,6,grey%linewidth 2%snaptogrid%userdraw crosshairs,blue%mouse red,22
		4699	@%snaptogrid_2%size 400,400%xrange -5,5%yrange -5,5%axis%axisnumbering%precision 1%grid 1,1,grey,4,1,6,grey%linewidth 1%snaptogrid%userdraw crosshairs,blue%mouse red,22
11806	schaersvoo	4700	*/
14038	schaersvoo	4701	use_snap = 1;
11806	schaersvoo	4702	break;
		4703
		4704	case SQUARE:
		4705	/*
14078	bpr	4706	@ square x,y,side (px),color
15111	schaersvoo	4707	@ draw a square with left top corner (x:y) with side ''side`` in color 'color'
14071	bpr	4708	@ use command <code>fsquare x,y,side,color</code> for a filled square
14162	bpr	4709	@ use command/keyword <a href='#filled'>filled</a> before command <code>square x,y,side,color</code>
11806	schaersvoo	4710	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	4711	@%square%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%filled%fillcolor blue%square 0,0,120,green
11806	schaersvoo	4712	*/
11991	schaersvoo	4713	for(i=0;i<4;i++){
11806	schaersvoo	4714	switch(i){
		4715	case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
		4716	case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
11991	schaersvoo	4717	case 2:double_data[2] = get_real(infile,0);break; /* width in px */
		4718	case 3:stroke_color = get_color(infile,1);/* name or hex color */
		4719	decimals = find_number_of_digits(precision);
		4720	double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
		4721	double_data[4] = double_data[1] + -1(ymax - ymin)double_data[2]/ysize;
15111	schaersvoo	4722	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		4723	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,1,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[3],decimals,double_data[3],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[4],decimals,double_data[4],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4724	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4725	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,1,[%.f,%.f,%.f,%.f],[%.f,%.f,%.f,%.f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[3],decimals,double_data[3],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[4],decimals,double_data[4],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		4726	add_to_buffer(tmp_buffer);
		4727	if(onclick != 0){object_cnt++;}/* object_cnt++; */
11991	schaersvoo	4728	reset();break;
		4729	default: break;
11806	schaersvoo	4730	}
		4731	}
15111	schaersvoo	4732	dragstuff[1] = 1;
		4733	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
9213	schaersvoo	4734	break;
13829	bpr	4735
11806	schaersvoo	4736	case STATUS:
9213	schaersvoo	4737	/*
11806	schaersvoo	4738	@ status
		4739	@ keyword
14066	bpr	4740	@ alernative: nostatus
14078	bpr	4741	@ used to override the effects of ''status=done`` in wims (answer.phtml)
14071	bpr	4742	@ affects ''readonly`` in inputfields / textareas in canvasimage and all userdraw based commands
		4743	@ e.g.: if keyword ''status`` is set, the pupil will be able to modify the canvas when the ''wims $status variable`` is set to ''done``
9213	schaersvoo	4744	*/
11806	schaersvoo	4745
		4746	fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
9213	schaersvoo	4747	break;
11806	schaersvoo	4748
		4749	case STRING:
9213	schaersvoo	4750	/*
11806	schaersvoo	4751	@ string color,x,y,the text string
15111	schaersvoo	4752	@ may be set ''onclick`` or ''drag xy``
17351	bpr	4753	@ note: when set ''onclick``, use an extra command ''fontsize`` (default: fontsize=12) to adjust the size of the clicked text-string<br>note: a clicked text string will be hardcoded : fontsize+10 in the font family courier
16706	schaersvoo	4754	@ unicode supported: <code>string red,0,0,\\u2232</code><br/> See <a target='new' href='https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode'>https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode</a><br/> See <a target='new' href='https://en.wikipedia.org/wiki/Greek_script_in_Unicode'>https://en.wikipedia.org/wiki/Greek_script_in_Unicode</a>
15313	schaersvoo	4755	@ use a command like <code>fontfamily italic 24px Arial</code> to set fonts on browser that support font change
17586	schaersvoo	4756	@ super / sub script is supported, using '<b>_</b>' and '<b>^</b>' <br>The font family for the sub/sup string will be Helvetica e.g. your font family settings will be ignored <br>to force end the subscript/supscript, use an extra space...see example:
		4757	@%string_sup_sub%size 400,400%xrange -6,6%yrange -6,6%fontfamily 22px Arial%# you can use a single space for separation in formula...%# use double space to create new word%string blue,-5,3,H_3O^+ + OH^- \\u2192 2H_2O%# you can use a single space for separation in formula...%string red,-5,-3,H_3 O^+ + OH^\\u2212 \\u2192 2H_2 O%
15313	schaersvoo	4758	@%string%size 400,400%xrange -10,10%yrange -10,10%fontfamily 14px Arial%crosshair -3,-3,red%crosshair 3,3,blue%string red,-3,-3,Hello World%fontfamily Italic 18px Arial%string red,3,3,Hello World%fontfamily 22pt STIX%string black,-10,8,\\u03B1 \\u03B2 \\u03B3 \\u03B4 \\u03B5 \\u03B6 \\u03B7 \\u03B8 \\u03B9 \\u03BA \\u03BB \\u03BC \\u03BD \\u03BE \\u03BF
9213	schaersvoo	4759	*/
15111	schaersvoo	4760	if( use_rotate == TRUE ){js_function[JS_ROTATE_MOUSE] = 1; }
		4761	dragstuff[14] = 1;
		4762	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	4763	for(i=0;i<5;i++){
		4764	switch(i){
		4765	case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
		4766	case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
		4767	case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
		4768	case 3: decimals = find_number_of_digits(precision);
15111	schaersvoo	4769	if(use_affine == TRUE ){ transform(2,2);}
		4770	/* rotate is done by HTML5/CANVAS context rotation */
11806	schaersvoo	4771	temp = get_string_argument(infile,1);
16700	schaersvoo	4772	if(strstr(temp,"_") != NULL \|\| strstr(temp,"^") != NULL){js_function[DRAW_SUBSUP] = 1;}
11806	schaersvoo	4773	decimals = find_number_of_digits(precision);
15111	schaersvoo	4774	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		4775	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,my_sliders,rotation_center,use_offset);
		4776	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4777	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,my_sliders,rotation_center,use_offset);
		4778	add_to_buffer(tmp_buffer);
		4779	if(onclick != 0){object_cnt++;}
15758	schaersvoo	4780	//onclick = 0;
		4781	//use_offset = 0;
15111	schaersvoo	4782	reset();
11806	schaersvoo	4783	break;
		4784	default:break;
		4785	}
9213	schaersvoo	4786	}
		4787	break;
11806	schaersvoo	4788
		4789	case STRINGUP:
9213	schaersvoo	4790	/*
11806	schaersvoo	4791	@ stringup color,x,y,rotation_degrees,the text string
15111	schaersvoo	4792	@ may be set ''onclick`` or ''drag xy``
17351	bpr	4793	@ note: when set ''onclick``, use an extra command ''fontsize`` (default: fontsize=12) to adjust the size of the clicked text-string<br>note: a clicked text string will be hardcoded : fontsize+10 in the font family courier
15111	schaersvoo	4794	@ unicode supported: <code>stringup red,0,0,45,\\u2232</code>
		4795	@ use a command like <code>fontfamily bold 34px Courier</code> to set fonts on browser that support font change
		4796	@ you could use keyword <a href='#yoffset'>yoffset</a> to -sometimes- do a small correction of text placement under/above a point (e.g. text & point have thesame coordinates)
17351	bpr	4797	@ note: no need to ''killrotate`` after ''stringup``<br><code>onclick<br>rotate 45<br>string red,0,0,AAAAAA<br/>killrotate<br>string red,4,4,BBBBBB</code><br>is identical with:<br><code>onclick<br>stringup red,0,0,45,AAAAAA<br>string red,4,4,BBBBBB</code>
		4798	@ super / sub script is supported, using '<b>_</b>' and '<b>^</b>' <br>to end the subscript/supscript, use an extra space...see example:
16705	schaersvoo	4799	@%stringup_sub_sup%size 400,400%xrange -6,6%yrange -6,6%fontfamily 22px Arial%# use single space for separation in formula...%# use double space to create new word%stringup red,-5,0,45,H_3 O^+ + OH^\\u2212 \\u2192 2H_2 O%
15313	schaersvoo	4800	@%stringup%size 400,400%xrange -10,10%yrange -10,10%fontsize 24%fontfamily 14px Arial%crosshair -3,0,red%crosshair 3,0,blue%onclick%stringup red,-3,0,-90,Hello World%drag xy%stringup red,-3,0,-45,Hello World%stringup red,-3,0,45,Hello World%stringup red,-3,0,90,Hello World%stringup blue,3,0,-90,Hello World%stringup blue,3,0,-45,Hello World%stringup blue,3,0,45,Hello World%stringup blue,3,0,90,Hello World
11806	schaersvoo	4801
14634	bpr	4802	*/
15111	schaersvoo	4803	/* html5 canvas rotation is only used for text objects */
		4804	use_rotate = TRUE ;
		4805	dragstuff[14] = 1;
		4806	js_function[JS_ROTATE_MOUSE] = 1;
		4807	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
15116	bpr	4808
15111	schaersvoo	4809	for(i=0;i<6;i++){
11806	schaersvoo	4810	switch(i){
14596	schaersvoo	4811	case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
		4812	case 1: double_data[0] = get_real(infile,0);break; /* x */
		4813	case 2: double_data[1] = get_real(infile,0);break; /* y */
15111	schaersvoo	4814	case 3: angle = get_real(infile,0);break;/* rotation */
11806	schaersvoo	4815	case 4: decimals = find_number_of_digits(precision);
14596	schaersvoo	4816	temp = get_string_argument(infile,1);
16700	schaersvoo	4817	if(strstr(temp,"_") != NULL \|\| strstr(temp,"^") != NULL){js_function[DRAW_SUBSUP] = 1;}
14596	schaersvoo	4818	decimals = find_number_of_digits(precision);
15111	schaersvoo	4819	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		4820	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,my_sliders,rotation_center,use_offset);
		4821	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4822	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,my_sliders,rotation_center,use_offset);
		4823	add_to_buffer(tmp_buffer);
		4824	if(onclick != 0){object_cnt++;}
15758	schaersvoo	4825	//onclick = 0;
		4826	//use_offset = 0;
14596	schaersvoo	4827	reset();
		4828	break;
11806	schaersvoo	4829	default:break;
		4830	}
9213	schaersvoo	4831	}
14596	schaersvoo	4832	use_rotate = FALSE;
9213	schaersvoo	4833	break;
11767	schaersvoo	4834
11806	schaersvoo	4835	case STYLE:
11767	schaersvoo	4836	/*
11806	schaersvoo	4837	@ highlight color,opacity,linewidth
		4838	@ NOT IMPLEMENTED
14071	bpr	4839	@ use command ''onclick``: when the object receives a userclick it will increase its linewidth
11767	schaersvoo	4840	*/
		4841	break;
11806	schaersvoo	4842
		4843
		4844	case STROKECOLOR:
9213	schaersvoo	4845	/*
11806	schaersvoo	4846	@ strokecolor colorname or #hex
14071	bpr	4847	@ to be used for commands that do not supply a color argument (like command ''linegraph``)
9213	schaersvoo	4848	*/
11806	schaersvoo	4849	stroke_color = get_color(infile,1);
9213	schaersvoo	4850	break;
11806	schaersvoo	4851
		4852	case FLY_TEXT:
9213	schaersvoo	4853	/*
11806	schaersvoo	4854	@ text fontcolor,x,y,font,text_string
14066	bpr	4855	@ font may be described by keywords: giant,huge,normal,small,tiny
15111	schaersvoo	4856	@ use command ''fontsize`` to increase base fontsize for these keywords
		4857	@ may be set ''onclick`` or ''drag xy``
11806	schaersvoo	4858	@ backwards compatible with flydraw
		4859	@ unicode supported: text red,0,0,huge,\\u2232
16700	schaersvoo	4860	@ special: use '_' and '^' to imitate html sup/sub, like H_3O^+ + OH^\\u22i2 \\u2192 2H_2 O
16706	schaersvoo	4861	@ much better to use command <a href='#string'>string</a> combined with <a href='#fontfamily'>fontfamily</a> for a more fine grained control over html5 canvas text element
17351	bpr	4862	@ super / sub script is supported, using '<b>_</b>' and '<b>^</b>' <br>to end the subscript/supscript, use an extra space...see <a href='#string'>string </a> command
15313	schaersvoo	4863	@ Avoid mixing old flydraw commands ''text``, ''textup`` with new canvasdraw commands ''string``, ''stringup``. If the fontfamily was set completely like <code>fontfamily italic 24px Arial</code>. In that case reset ''fontfamily`` to something lke ''fontfamily Arial`` before the old flydraw commands.
12311	schaersvoo	4864	@%text%size 400,400%xrange -10,10%yrange -10,10%fontsize 14%onclick%drag xy%text green,-4,-4,small,Hello World%drag xy%text red,-4,-2,large,Hello World%drag xy%text blue,-4,0,huge,Hello World%drag xy%text green,-4,3,giant,Hello World%drag xy
9213	schaersvoo	4865	*/
11806	schaersvoo	4866	for(i = 0; i < 5 ;i++){
		4867	switch(i){
		4868	case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
		4869	case 1: double_data[0] = get_real(infile,0);break; /* x */
		4870	case 2: double_data[1] = get_real(infile,0);break; /* y */
		4871	case 3: fly_font = get_string_argument(infile,0);
		4872	if(strcmp(fly_font,"giant") == 0){
		4873	fly_font_size = (int)(font_size + 24);
		4874	}
		4875	else
		4876	{
		4877	if(strcmp(fly_font,"huge") == 0){
		4878	fly_font_size = (int)(font_size + 14);
		4879	}
		4880	else
		4881	{
		4882	if(strcmp(fly_font,"large") == 0){
		4883	fly_font_size = (int)(font_size + 6);
		4884	}
		4885	else
		4886	{
		4887	if(strcmp(fly_font,"small") == 0){
		4888	fly_font_size = (int)(font_size - 4);
		4889	if(fly_font_size<0){fly_font_size = 8;}
		4890	}
		4891	}
		4892	}
		4893	}
		4894	break;
		4895	case 4:
		4896	temp = get_string_argument(infile,1);
16700	schaersvoo	4897	if(strstr(temp,"_") != NULL \|\| strstr(temp,"^") != NULL){js_function[DRAW_SUBSUP] = 1;}
11806	schaersvoo	4898	decimals = find_number_of_digits(precision);
15111	schaersvoo	4899	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
15646	schaersvoo	4900	if(use_affine == TRUE ){ transform(2,2);}
15111	schaersvoo	4901	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,%s,%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,fly_font_size,"null",my_sliders,rotation_center,use_offset);
		4902	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		4903	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,14,[%.f],[%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,%s,%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,fly_font_size,"null",my_sliders,rotation_center,use_offset);
		4904	add_to_buffer(tmp_buffer);
		4905	if(onclick != 0){object_cnt++;}
11806	schaersvoo	4906	reset();
		4907	break;
		4908	default:break;
		4909	}
10953	bpr	4910	}
15111	schaersvoo	4911	dragstuff[14] = 1;
		4912	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
9213	schaersvoo	4913	break;
11806	schaersvoo	4914	case TEXTAREA:
9289	schaersvoo	4915	/*
11806	schaersvoo	4916	@ textarea x,y,cols,rows,readonly,value
15111	schaersvoo	4917	@ may be further controlled by <a href="#css">css</a>
14162	bpr	4918	@ if ''$status=done`` (e.g. in answer.phtml) the inputfield will be cleared and set readonly. Override this by keyword <a href="#status">status</a>.
14066	bpr	4919	@ if mathml inputfields are present and / or some userdraw is performed, these data will <b>not</b> be send as well (<code>javascript:read_canvas();</code>)
14071	bpr	4920	@ keyword ''xoffset \| centered`` is not active for command ''textarea``
15111	schaersvoo	4921	@%textarea%size 400,400%xrange -10,10%yrange -10,10%css color:red;background-color:lightblue;font-size:14px;text-align:center%textarea -3,-2,6,3,1,?%css color:blue;background-color:yellow;font-size:14px;text-align:center%textarea 0,-2,8,2,1,?
9289	schaersvoo	4922	*/
15111	schaersvoo	4923	js_function[DRAW_TEXTAREAS] = 1;
11806	schaersvoo	4924	for(i = 0 ; i<6;i++){
9289	schaersvoo	4925	switch(i){
11806	schaersvoo	4926	case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
		4927	case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
		4928	case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
		4929	case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
		4930	case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
		4931	case 5: temp = get_string_argument(infile,1);
15111	schaersvoo	4932	string_length = 1 + snprintf(NULL,0, "draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],css_class,temp);
14208	schaersvoo	4933	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	4934	snprintf(tmp_buffer,string_length,"draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],css_class,temp);
11806	schaersvoo	4935	add_to_buffer(tmp_buffer);
		4936	input_cnt++;break;
9289	schaersvoo	4937	default: break;
		4938	}
		4939	}
11806	schaersvoo	4940	if(reply_format == 0 ){reply_format = 15;}
		4941	reset();
9289	schaersvoo	4942	break;
11806	schaersvoo	4943
11830	schaersvoo	4944	case TEXTFILL:
		4945	/*
		4946	@ textfill x0,y0,color,some_text
		4947	@ x0,y0 in xrange / yrange
		4948	@ color will be used for the font color
		4949	@ use command <a href="#fontfamily">fontfamily</a> to set font type and size
13829	bpr	4950	@ there is also a command <a href="#userdraw">userdraw textfill,color,some_text</a>
15313	schaersvoo	4951	@%textfill%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%fontfamily 24pt Arial%circles red,0,0,3,3,3,6%textfill 4,4,blue,HELLO WORLD
11830	schaersvoo	4952	*/
		4953
		4954	js_function[DRAW_TEXTFILL] = 1;
		4955	if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
		4956	js_function[DRAW_FILLTOBORDER] = 1;
15111	schaersvoo	4957	add_js_filltoborder(canvas_type);
11830	schaersvoo	4958	}
		4959	decimals = find_number_of_digits(precision);
		4960	for(i=0;i<4;i++){
		4961	switch(i){
		4962	case 0: double_data[0] = get_real(infile,0); break; /* x in px */
		4963	case 1: double_data[1] = get_real(infile,0); break; /* y in py */
13829	bpr	4964	case 2: font_color = get_color(infile,0); break;
11830	schaersvoo	4965	case 3: temp = get_string(infile,1);
14208	schaersvoo	4966	string_length = 1 + snprintf(NULL,0,"draw_textfill(%d,%.f,%.f,'%s','%s',%d,%d,'%s',false); ",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],font_color,font_family,xsize,ysize,temp);
		4967	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11830	schaersvoo	4968	snprintf(tmp_buffer,string_length,"draw_textfill(%d,%.f,%.f,'%s','%s',%d,%d,'%s',false); ",FILL_CANVAS+fill_cnt,decimals,double_data[0],decimals,double_data[1],font_color,font_family,xsize,ysize,temp);
		4969	add_to_buffer(tmp_buffer);
		4970	fill_cnt++;
		4971	break;
		4972	default:break;
		4973	}
		4974	}
		4975	reset();
		4976	break;
		4977
		4978
11806	schaersvoo	4979	case FLY_TEXTUP:
9289	schaersvoo	4980	/*
11806	schaersvoo	4981	@ textup fontcolor,x,y,font,text_string
14078	bpr	4982	@ can <b>not</b> be set ''onclick`` or ''drag xy`` (because of translaton matrix...mouse incompatible)
14066	bpr	4983	@ font may be described by keywords: giant,huge,normal,small,tiny
14071	bpr	4984	@ use command ''fontsize`` to increase base fontsize for the keywords
11806	schaersvoo	4985	@ backwards compatible with flydraw
		4986	@ unicode supported: textup red,0,0,huge,\\u2232
14071	bpr	4987	@ use command ''stringup`` and ''fontfamily`` for a more fine grained control over html5 canvas text element
15313	schaersvoo	4988	@ Avoid mixing old flydraw commands ''text``, ''textup`` with new canvasdraw commands ''string``; ''stringup``. If the fontfamily was set completely like <code>fontfamily italic 24px Arial</code>. In that case reset ''fontfamily`` to something like ''fontfamily Arial`` before the old flydraw commands.
9289	schaersvoo	4989	*/
15111	schaersvoo	4990	js_function[DRAW_TEXTS] = 1;
11806	schaersvoo	4991	for(i = 0; i<5 ;i++){
9289	schaersvoo	4992	switch(i){
11806	schaersvoo	4993	case 0: font_color = get_color(infile,0);break;/* name or hex color */
		4994	case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
		4995	case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
		4996	case 3: fly_font = get_string_argument(infile,0);
		4997	if(strcmp(fly_font,"giant") == 0){
		4998	fly_font_size = (int)(font_size + 24);
		4999	}
		5000	else
		5001	{
		5002	if(strcmp(fly_font,"huge") == 0){
		5003	fly_font_size = (int)(font_size + 14);
		5004	}
		5005	else
		5006	{
		5007	if(strcmp(fly_font,"large") == 0){
		5008	fly_font_size = (int)(font_size + 6);
		5009	}
		5010	else
		5011	{
		5012	if(strcmp(fly_font,"small") == 0){
		5013	fly_font_size = (int)(font_size - 4);
		5014	if(fly_font_size<0){fly_font_size = 8;}
		5015	}
		5016	}
		5017	}
		5018	}
		5019	break;
		5020	case 4:
9289	schaersvoo	5021	decimals = find_number_of_digits(precision);
11806	schaersvoo	5022	temp = get_string_argument(infile,1);
15111	schaersvoo	5023	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		5024	string_length = 1 + snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],fly_font_size,"null",font_color,stroke_opacity,temp,use_rotate,angle,use_offset);
14208	schaersvoo	5025	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
15111	schaersvoo	5026	snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],fly_font_size,"null",font_color,stroke_opacity,temp,use_rotate,angle,use_offset);
9289	schaersvoo	5027	add_to_buffer(tmp_buffer);
15758	schaersvoo	5028	reset();
		5029	//use_offset = 0;
9289	schaersvoo	5030	break;
11806	schaersvoo	5031	default:break;
		5032	}
		5033	}
		5034	break;
		5035
		5036
		5037	case TRACE_JSCURVE:
		5038	/*
		5039	@ trace_jscurve some_math_function
		5040	@ will use a crosshair to trace the jsmath curve
		5041	@ two inputfields will display the current x/y-values (numerical evaluation by javascript)
14071	bpr	5042	@ default labels ''x`` and ''y``; use commands ''xlabel some_x_axis_name`` and ''ylabel some_y_axis_name`` to customize the labels for the input fields
15111	schaersvoo	5043	@ use commands fontsize and css to format the fonts for labels and inputfields.
14071	bpr	5044	@ use commands ''linewidth, strokecolor, crosshairsize`` to adjust the corsshair.
17351	bpr	5045	@ the client browser will convert your math function to javascript math.<br>use parenthesis and rawmath: use 2*x instead of 2x etc etc no check is done on the validity of your function and/or syntax (use error console to debug any errors...)
14071	bpr	5046	@ be aware that the formulas of the plotted function(s) can be found in the page javascript source
15111	schaersvoo	5047	@%trace_jscurve%size 400,400%xrange -10,10%yrange -10,10%precision 0%axis%axisnumbering%grid 2,2,grey,2,2,5,gray%recision 100%css color:blue;%linewidth 4%crosshairsize 8%trace_jscurve 5sin(0.1x^2)%linewidth 1%jsplot red,5sin(0.1x^2)%#only one curve can be traced
11806	schaersvoo	5048	*/
15111	schaersvoo	5049	js_function[INTERACTIVE] = 1;
		5050	js_function[DRAW_CROSSHAIRS] = 1;
		5051	js_function[DRAW_LINES] = 1;
		5052	js_function[JS_MATH] = 1;
		5053	add_trace_js_mouse(TRACE_CANVAS,stroke_color,get_string(infile,1),font_size,stroke_opacity,line_width,crosshair_size,css_class);
11806	schaersvoo	5054	break;
		5055
		5056
		5057	case TRANGE:
		5058	/*
		5059	@ trange tmin,tmax
15715	schaersvoo	5060	@ alternative: ranget
11806	schaersvoo	5061	@ default -2,2
		5062	*/
		5063	use_parametric = TRUE;
		5064	for(i = 0 ; i<2; i++){
		5065	switch(i){
		5066	case 0: tmin = get_real(infile,0);break;
		5067	case 1: tmax = get_real(infile,1);break;
9289	schaersvoo	5068	default: break;
		5069	}
		5070	}
14066	bpr	5071	if(tmin >= tmax ){canvas_error(" trange is not OK: tmin < tmax!\n");}
9289	schaersvoo	5072	break;
11806	schaersvoo	5073	case TRANSLATION:
		5074	/*
		5075	@ translation tx,ty
15715	schaersvoo	5076	@ alternative: translate
11806	schaersvoo	5077	@ will translate the next objects tx in xrange and ty in yrange
14071	bpr	5078	@ use command ''killtranstation`` to end the command
13958	schaersvoo	5079	@%translation%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%fillpattern grid%ftriangle -6,6,8,6,5,1,blue%translation 2,2%ftriangle -6,6,8,6,5,1,red
11806	schaersvoo	5080	*/
		5081	for(i = 0 ; i<2;i++){
		5082	switch(i){
15111	schaersvoo	5083	case 0: affine_matrix[4] = get_real(infile,0);break;
		5084	case 1: affine_matrix[5] = get_real(infile,1);
11806	schaersvoo	5085	use_affine = TRUE;
15111	schaersvoo	5086	/* the other values affine_matrix[0..3] remain untouched*/
11806	schaersvoo	5087	break;
		5088	default: break;
		5089	}
		5090	}
		5091	break;
		5092
		5093	case TRIANGLE:
		5094	/*
		5095	@ triangle x1,y1,x2,y2,x3,y3,color
14066	bpr	5096	@ use ftriangle or keyword <a href='#filled'>filled</a> for a solid triangle
11806	schaersvoo	5097	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
13948	schaersvoo	5098	@%triangle%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%opacity 250,150%drag xy%triangle 0,0,-4,4,6,8,red%drag xy%ftriangle 0,0,-4,-4,6,-8,red%fillpattern grid%drag xy%ftriangle -6,6,8,6,5,1,blue
11806	schaersvoo	5099	*/
		5100	for(i=0;i<7;i++){
		5101	switch(i){
		5102	case 0: double_data[0] = get_real(infile,0);break; /* x */
		5103	case 1: double_data[1] = get_real(infile,0);break; /* y */
		5104	case 2: double_data[2] = get_real(infile,0);break; /* x */
		5105	case 3: double_data[3] = get_real(infile,0);break; /* y */
		5106	case 4: double_data[4] = get_real(infile,0);break; /* x */
		5107	case 5: double_data[5] = get_real(infile,0);break; /* y */
		5108	case 6: stroke_color = get_color(infile,1);/* name or hex color */
		5109	decimals = find_number_of_digits(precision);
15111	schaersvoo	5110	if( use_rotate == TRUE ){ rotate(6,angle,rotationcenter,2);}
		5111	if( use_affine == TRUE ){ transform(6,2);}
		5112	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		5113	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5114	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5115	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5116	add_to_buffer(tmp_buffer);
		5117	if(onclick != 0){object_cnt++;}
		5118	/* object_cnt++;*/
11806	schaersvoo	5119	reset();
		5120	break;
		5121	default: break;
		5122	}
		5123	}
15111	schaersvoo	5124	dragstuff[5] = 1;
		5125	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	5126	break;
		5127	case TRIANGLES:
		5128	/*
		5129	@ triangles color,x1,y1,x2,y2,x3,y3,...
14066	bpr	5130	@ use ftriangles or keyword <a href='#filled'>filled</a> for solid triangles
11806	schaersvoo	5131	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
13948	schaersvoo	5132	@%triangles%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%onclick%triangles red,0,0,-4,4,6,8,0,0,-4,-4,6,-8,-6,6,8,6,5,1%# the same as 3 calls to command triangle
11806	schaersvoo	5133	*/
		5134	stroke_color = get_color(infile,0);/* name or hex color */
		5135	i = 0;
		5136	decimals = find_number_of_digits(precision);
15111	schaersvoo	5137	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
15116	bpr	5138
11806	schaersvoo	5139	while( ! done ){
11997	schaersvoo	5140	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	5141	double_data[0] = get_real(infile,0); /* x1 */
		5142	double_data[1] = get_real(infile,0); /* y1 */
		5143	double_data[2] = get_real(infile,0); /* x2 */
		5144	double_data[3] = get_real(infile,0); /* y2 */
		5145	double_data[4] = get_real(infile,0); /* x3 */
		5146	double_data[5] = get_real(infile,1); /* y3 */
15111	schaersvoo	5147	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5148	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5149	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,5,%s,[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5150	add_to_buffer(tmp_buffer);
		5151	if(onclick != 0){object_cnt++;}
11806	schaersvoo	5152	i = i + 6;
		5153	}
		5154	reset();
15111	schaersvoo	5155	dragstuff[5] = 1;
		5156	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
11806	schaersvoo	5157	break;
		5158	case USERBOXPLOT:
		5159	/*
		5160	@ userboxplot
		5161	@ keyword, no arguments
14066	bpr	5162	@ use before command <a href="#boxplot">boxplot x_or_y,box-height_or_box-width,x_or_y-position</a>
14071	bpr	5163	@ if set, the student will have to calculate "min,Q1,median,Q3,max" and feed these data into the ''draw_boxplot`` function
17351	bpr	5164	@ for example: put the canvas-script into a html element with id='boxplot' and set style='display:none'<br>define a variable called ''student_boxplot`` and fill it with the 5 student-data (from inputfields or something)<br><code>var student_boxplot = new Array(5)<br>function show_boxplot(){<br>student_boxplot[0] = min;<br>student_boxplot[1] = Q1;<br>student_boxplot[2] = median;<br>student_boxplot[3] = Q3;<br>student_boxplot[4] = max;<br>document.getElementById('boxplot').style.display = "block";<br>draw_boxplot(12345,1,2.00,5.00,[0,0,0,0,0],4,"0,0,255",0.78,"255,165,0",0.60,1,0,1,1);<br>};</code><br>In the canvas-script the function draw_boxplot has the following arguments:<br>draw_boxplot=function(canvas_type,xy,hw,cxy,data,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype0,dashtype1)
11806	schaersvoo	5165	*/
15111	schaersvoo	5166	js_function[DRAW_BOXPLOT] = 1;
11806	schaersvoo	5167	fprintf(js_include_file,"var boxplot_source = 3;\n");
		5168	js_function[DRAW_JSBOXPLOT] = 2;
		5169	break;
		5170
		5171	case USERBOXPLOTDATA:
		5172	/*
		5173	@ userboxplotdata
		5174	@ keyword, no arguments
14066	bpr	5175	@ use before command <a href="#boxplot">boxplot x_or_y,box-height_or_box-width,x_or_y-position</a>
14071	bpr	5176	@ if set, the student will have to generate some statistical data. These data should be put in a named array ''student_boxplot_data``
15111	schaersvoo	5177	@ ''min,Q1,median,Q3,max`` are calculated by a js-function and the 'draw_boxplot' function will draw a boxplot.
14066	bpr	5178	@ see command <a href="#userboxplot">userboxplot</a> for calling 'draw_boxplot()'
11806	schaersvoo	5179	*/
15111	schaersvoo	5180	js_function[DRAW_BOXPLOT] = 1;
11806	schaersvoo	5181	fprintf(js_include_file,"var boxplot_source = 2;\n");
		5182	js_function[DRAW_JSBOXPLOT] = 1;
		5183
		5184	break;
		5185
7614	schaersvoo	5186	case USERDRAW:
		5187	/*
		5188	@ userdraw object_type,color
9213	schaersvoo	5189	@ only a single object_type is allowed.
15111	schaersvoo	5190	@ right mouse click will remove last drawn object.
		5191	@ for multiple different 'userdraw' objects in an exercise, use command <a href="#multidraw">multidraw</a>
17351	bpr	5192	@ implemented object_type: <ul><li>point</li><li>points</li><li>crosshair</li><li>crosshairs</li><li>line</li><li>lines</li><li>vline</li><li>vlines</li><li>hline</li><li>hlines</li><li>demiline</li><li>demilines</li><li>segment</li><li>segments</li><li>polyline \| brokenline</li><li>circle</li><li>circles</li><li>arrow</li><li>arrow2 (double arrow)</li><li>arrows</li><li>arrows2 (double arrows)</li><li>curvedarrow</li><li>curvedarrows</li><li>curvedarrow2</li><li>curvedarrows2</li><li>triangle</li><li>polygon</li><li>poly[3-9] (e.g poly3 ... poly7...poly9</li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline \| path</li><li>freehandlines \| paths</li><li>clickfill: fill the clicked area with color<br>multiple areas may be selected <br>multiple colors may be provided using commands <a href='#colorpalette'>colorpalette color1,color2,color3,...</a> use <a href='#replyformat'>replyformat 10</a> for checking the user click color ... reply=x1:y1:color1,x2:y2:color2...<br/>attention: this will <b>not</b> work for pattern filling, because the pattern image is only generated once and after creation can not be changed !<br>the opacity of this image on a separate canvas is set to 0.01 and not 0 (!!)...in the ''fill algorithm`` the opacity of the matching pixels is set to 1</li><li>dotfill: fill the clicked area with a dot pattern; use command linewidth to change dot size</li><li>diamondfill: fill the clicked area with a diamond pattern</li><li>hatchfill: fill the clicked area with a hatch pattern</li><li>gridfill: fill the clicked area with a grid pattern</li><li>textfill: fill the clicked area with a repeating string<br>userdraw textfill,blue,some_text<br>use command <a href="#fontfamily">fontfamily</a> to adjust text style and size</li><li>''clickfill \| pattern filling`` in general:<br>the clicks may be set <a href="#snaptogrid">snaptogrid</a><br>can be used together with command <a href="#floodfill">floodfill or fill</a><br><b>always</b> use together with command <a href="#clearbutton">clearbutton some_text</a> for removal of all click_colored areas<br>the function read_canvas() will return the click coordinates in the sequence of the user clicks<br>use command <a href="#canvastype">canvastype</a> to fill another canvas (default should be fine: DRAG_CANVAS = 5)</li><li>text <br>an inputfield is provided, unicode allowed. The text is drawn a the mouse click, or if used with command ''userinput inputfield`` also at the given x/y-coordonates</li><li>arc</li><li>arcs</li><li>image<br/>only a single "image" of every supported type() may be added to canvas window from the surrounding html page.<br>the image should have an 'id' and an onclick handler.<br>() supported types are ''svg``,''bitmap``,''p-element``,''div-element`` and ''mathml/tex-code`` with ''\\mmlid{int}``.</li><li>images</li><li>input<br/>place a single inputfield on ''canvas`` <br>use commands 'css' for css styling: use command ''linewidth`` for adjusting the input field size (default 1)</li><li>inputs<br/>place multiple inputfield: placing inputfields on top of each other is not possible</li><li>function : identical to <a href="#userinput">userinput function</a></li></ul>
		5193	@ note: mouselisteners are only active if ''$status != done`` (eg only drawing in an active/non-finished exercise) <br> to overrule use command/keyword ''status`` (no arguments required)
		5194	@ note: object_type text: Any string or multiple strings may be placed anywhere on the canvas.<br>Use command ''fontfamily`` to set font
11088	schaersvoo	5195	@ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
15111	schaersvoo	5196	@ note: all objects will be removed -after a javascript confirm box- when clicked on an object point with middle or right mouse button (e.g. event.button != 1: all buttons but left)
		5197	@ use a prefix <a href='#filled'>filled</a> or ''f`` to set fillable objects filled. (fcircles,filledcircles etc)<br/> in case of ''fillpattern`` do not use the ''f`` prefix !
11839	schaersvoo	5198	@ for non solid filling, use command <a href="#fillpattern">fillpattern grid,hatch,diamond,dot</a>
14071	bpr	5199	@ use <a href='#opacity'>opacity int,int</a> and <a href='#fillcolor'>fillcolor color</a> to trigger coloured filling of fillable objects
14078	bpr	5200	@ use command ''dashed`` and/or ''dashtype int,int`` to trigger dashing
		5201	@ use command ''replyformat int`` to control / adjust output formatting of javascript function read_canvas(); (the defaults should be fine...)
14071	bpr	5202	@ may be combined with onclick or drag xy of other components of flyscript objects (although not very useful...)
14066	bpr	5203	@ may be combined with keyword <a href='#userinput_xy'>userinput_xy</a>
		5204	@ may be combined width the <a href='#snaptogrid'>snaptogrid snaptopoints </a> etc, to simplify the checking of the student reply
13956	schaersvoo	5205	@ the cursor may be appropriately styled using command <a href='cursor'>cursor</a>
17351	bpr	5206	@ note: when zooming / panning after a drawing, the drawing will NOT be zoomed / panned...this is a "design" flaw and not a feature <br>To avoid trouble do not use zooming / panning together width userdraw.!<br>use command <a href="#multidraw">multidraw</a> is this is a problem for you...
14247	bpr	5207	@ note: the default replyformat for ''userdraw input(s),color`` used format x1;y1;text1 \n x2;y2;test2 \n x_n;y_n;text_n (e.g. it is not a comma separated array...use ''direct exec`` to test)
17351	bpr	5208	@ note: a special case is ''userdraw image,boguscolor``. Images (bitmap or svg or div) present in the exercise page and the img/svg/div-tag with an unique 'id' and <code>onclick='javascript:place_image_on_canvas(this.id)'</code> can be placed onto the canvas.<br>The ''id`` and (x;y) coordinates will be returned using read_canvas();<br> native MathML, MathJax or KaTeX typesetting may be included in div's.(experiments; wims_modules svn version only!)
		5209	@ note: command <br><code>userdraw function,color</code> is identical to acombination of <code>strokecolor color</code> and <code>userinput function</code><br>
		5210	@ note: commands :<br><code>multicolors red,green,blue<br>multilabel f(x)=:g(x)=:h(x)=<br>userdraw functions3,color</code><br>is identical to commands :<br><code>functionlabel f(x)=:p(x)=:w(x)=<br/>strokecolor red<br>userinput function <br>strokecolor green<br>userinput function <br>strokecolor blue<br>userinput function</code>
16613	schaersvoo	5211	@%userdraw_canvastype_a%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%grid 2,2,grey%replyformat 10%colorpalette orange,yellow,red,green,lightgreen,blue,lightblue,cyan%canvastype 4%userdraw clickfill,blue%clearbutton REMOVE LAST RECTANGLE
12107	schaersvoo	5212	@%userdraw_canvastype_b%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%canvastype 4%snaptogrid%replyformat 10%userdraw dotfill,blue%clearbutton REMOVE LAST RECTANGLE
		5213	@%userdraw_rect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw rect,green
		5214	@%userdraw_rects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw rects,green
		5215	@%userdraw_frect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw frect,green
		5216	@%userdraw_frects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw frects,green
		5217	@%userdraw_roundrect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw roundrect,green
		5218	@%userdraw_roundrects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw roundrects,green
		5219	@%userdraw_froundrect%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw froundrect,green
		5220	@%userdraw_froundrects%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw froundrects,green
		5221	@%userdraw_line%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw line,green
		5222	@%userdraw_lines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw lines,green
		5223	@%userdraw_vline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw vline,green
		5224	@%userdraw_vlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw vlines,green
		5225	@%userdraw_hline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw hline,green
		5226	@%userdraw_hlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw hlines,green
		5227	@%userdraw_demiline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw demiline,green
		5228	@%userdraw_demilines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw demilines,green
		5229	@%userdraw_arc%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw arc,green
		5230	@%userdraw_arcs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw arcs,green
		5231	@%userdraw_point%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw point,green
		5232	@%userdraw_points%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw points,green
		5233	@%userdraw_arrow%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrow,green
		5234	@%userdraw_arrows%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrows,green
		5235	@%userdraw_arrow2%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrow2,green
		5236	@%userdraw_arrows2%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw arrows2,green
14025	schaersvoo	5237	@%userdraw_curvedarrow%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 1%linewidth 3%userdraw curvedarrow,red%clearbutton REMOVE ALL ARROWS
		5238	@%userdraw_curvedarrows%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 1%linewidth 3%userdraw curvedarrows,red%clearbutton REMOVE ALL ARROWS
14270	schaersvoo	5239	@%userdraw_curvedarrow2%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 1%linewidth 3%userdraw curvedarrow2,red%clearbutton REMOVE ALL ARROWS
		5240	@%userdraw_curvedarrows2%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%precision 1%linewidth 3%userdraw curvedarrows2,red%clearbutton REMOVE ALL ARROWS
12107	schaersvoo	5241	@%userdraw_crosshair%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw crosshair,green
		5242	@%userdraw_crosshairs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw crosshairs,green
		5243	@%userdraw_circle%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw circle,green
		5244	@%userdraw_circles%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw circles,green
		5245	@%userdraw_segment%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw segment,green
		5246	@%userdraw_segments%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw segments,green
		5247	@%userdraw_line%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw line,green
		5248	@%userdraw_lines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw lines,green
		5249	@%userdraw_triangle%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw triangle,green
		5250	@%userdraw_poly5%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw poly5,green
		5251	@%userdraw_filled_poly5%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw poly5,green
		5252	@%userdraw_poly7%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw poly7,green
		5253	@%userdraw_filled_poly7%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw poly7,green
		5254	@%userdraw_polyline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%userdraw polyline,green
		5255	@%userdraw_freehandline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw freehandline,green
		5256	@%userdraw_filled_freehandline%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%fillcolor orange%opacity 200,50%filled%userdraw freehandline,green
		5257	@%userdraw_freehandlines%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%opacity 200,50%userdraw freehandlines,green
		5258	@%userdraw_input%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%userdraw input,green
		5259	@%userdraw_inputs%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%userdraw inputs,green
		5260	@%userdraw_text%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%fontfamily 42px Courier%userdraw text,green
15111	schaersvoo	5261	@%userdraw_function%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 1%grid 2,2,grey,2,2,5,grey%multicolors orange,red,green,blue,cyan%precision 1000%userdraw functions3,red%jscurve blue,x^2,-x^2,5*cos(x)%precision 1%mouse red,22
14044	schaersvoo	5262	@%userdraw_clickfill_colorpalette%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%circles blue,0,0,4,1,1,6,3,3,3,-3,-3,5%opacity 255,120%colorpalette red,green,yellow,blue%userdraw clickfill,green
13948	schaersvoo	5263	@%userdraw_clickfill_1%size 400,400%xrange -10,10%yrange -10,10%linewidth 3%circles blue,0,0,4,1,1,6,3,3,3,-3,-3,5%opacity 255,120%userdraw clickfill,green
		5264	@%userdraw_clickfill_2%size 400,400%xrange -10,10%yrange -10,10%linewidth 1%circles blue,0,0,2,1,1,5,5,5,4,-5,5,6,5,-5,6%userdraw hatchfill,red%#userdraw dotfill,red%#userdraw diamonefill,red%#userdraw gridfill,red
14071	bpr	5265	@%userdraw_clickfill_2%size 400,400%xrange -10,10%yrange -10,10%bgcolor white%# to get nice click coordinates take invisible ''grid`` and use ''snaptogrid`` %grid 1,1,white%snaptogrid%circles blue,0,0,2,1,1,5,5,5,4,-5,5,6,5,-5,6%userdraw gridfill,red
7614	schaersvoo	5266	*/
15111	schaersvoo	5267	if( use_userdraw != 0 ){ /* only one object type may be drawn*/
14038	schaersvoo	5268	canvas_error("Only one userdraw primitive may be used in command 'userdraw' use command 'multidraw' for this...");
7614	schaersvoo	5269	}
15111	schaersvoo	5270	js_function[INTERACTIVE] = 1;
7614	schaersvoo	5271	draw_type = get_string_argument(infile,0);
15111	schaersvoo	5272	if( strcmp(draw_type,"textfill") == 0){
		5273	fprintf(js_include_file,"var userdraw_text_string = \"%s\";", get_string(infile,1));
7614	schaersvoo	5274	}
		5275	else
15111	schaersvoo	5276	{
		5277	if( strcmp(draw_type,"imagefill") == 0){
		5278	fprintf(js_include_file,"var userdraw_image_url = \"%s\";", get_string(infile,1));
		5279	}
		5280	else
		5281	{
		5282	stroke_color = get_color(infile,1);
		5283	}
7614	schaersvoo	5284	}
15116	bpr	5285
15111	schaersvoo	5286	if( strcmp(draw_type,"clickfill") == 0){use_filled = 1;fill_color = stroke_color;}
		5287	reply_precision = precision;
		5288	use_userdraw = 1;
		5289	fprintf(js_include_file,"\n\
		5290	/* begin userdraw */\
		5291	userdraw_x = new Array();userdraw_y = new Array();userdraw_radius = new Array();\
		5292	var forbidden_zone=[xsize+1,ysize+1];var xy_cnt = 0;\
		5293	var canvas_userdraw = create_canvas%d(%d,xsize,ysize);\
		5294	var context_userdraw = canvas_userdraw.getContext(\"2d\");\
		5295	var use_dashed = %d;\
		5296	var use_snap = %d;if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};\
		5297	context_userdraw.lineWidth = %d;var use_filled = %d;\
		5298	context_userdraw.strokeStyle = \"rgba(%s,%.2f)\";\
		5299	context_userdraw.font = \"%s\";\
15128	schaersvoo	5300	var user_is_dragging = false;\
15111	schaersvoo	5301	if(wims_status != \"done\"){\
		5302	canvas_div.addEventListener(\"mousedown\" ,user_draw,false);\
		5303	canvas_div.addEventListener(\"mousemove\" ,user_drag,false);\
		5304	canvas_div.addEventListener(\"touchstart\",function(e){ e.preventDefault();user_draw(e.changedTouches[0]);},false);\
		5305	canvas_div.addEventListener(\"touchmove\" ,function(e){ e.preventDefault();user_drag(e.changedTouches[0]);},false);\
15128	schaersvoo	5306	canvas_div.addEventListener(\"touchend\" ,function(e){ e.preventDefault();user_drawstop(e.changedTouches[0]);},false);\
15111	schaersvoo	5307	};",canvas_root_id,DRAW_CANVAS,use_dashed,use_snap,dashtype[0],dashtype[1],dashtype[0],dashtype[1],line_width,use_filled,stroke_color,stroke_opacity,font_family);
		5308
		5309	if( use_filled == 0 ){
		5310	fprintf(js_include_file,"context_userdraw.fillStyle = \"rgba(255,255,255.0)\";");
7614	schaersvoo	5311	}
		5312	else
		5313	{
15111	schaersvoo	5314	if( use_filled == 1 ){
		5315	fprintf(js_include_file,"context_userdraw.fillStyle = \"rgba(%s,%.2f)\";",fill_color,fill_opacity);
		5316	}
		5317	else
		5318	{
		5319	js_function[DRAW_FILL_PATTERN] = 1;
		5320	fprintf(js_include_file,"context_userdraw.fillStyle = create_Pattern(0,0,%d,[%s]);\n",use_filled,fill_color);
		5321	}
7614	schaersvoo	5322	}
15111	schaersvoo	5323	add_js_userdraw(draw_type,stroke_color,stroke_opacity,crosshair_size,arrow_head,use_offset,css_class,use_snap,canvas_type,use_filled,fill_color,fill_opacity,line_width,font_family);
7614	schaersvoo	5324	reset();
		5325	break;
8386	schaersvoo	5326
		5327	case USERINPUT:
		5328	/*
13955	schaersvoo	5329	@ userinput function inputfield
15715	schaersvoo	5330	@ alternative: userinput_function
		5331	@ alternative: userinput_xy
15111	schaersvoo	5332	@ ''inputfield`` is only usable in combination with some ''userdraw draw_type``
		5333	@ note: the input fields are not cleared after the object is drawn...be aware of multiple idential drawings (many clicks on the ''ok`` button)
		5334	@ ''userinput function`` may be used any time (e.g. without userdraw)
14071	bpr	5335	@ multiple ''userinput function`` commands may be used.
		5336	@ use command <code>functionlabel some_string</code> to define the inputfield text: default value "f(x)="
		5337	@ use command <code>strokecolor some_color</code> to adjust the plot / functionlabel color
15111	schaersvoo	5338	@ use command <code>css some_css</code> to adjust the inputfields
14071	bpr	5339	@ use command <code>fontsize int</code> to adjust the label fonts. (default 12px)
17351	bpr	5340	@ the user input for the function will be corrected by a simple ''rawmath`` implementation...<br>an error message will be shown if javascript can not interpret the user input
15111	schaersvoo	5341	@%userinput_function%size 400,400%xrange -10,10%yrange -10,10%functionlabel your function g(x)=%axis%axisnumbering%xlabel x-axis%ylabel y-axis%grid 2,2,grey,3,3,5,grey%css color:blue;text-align:center%userinput function%# note: number of function inputs not limited
13955	schaersvoo	5342	@%userinput_points%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%# adding 2 inputfields for x and y%userinput inputfield%userdraw points,blue
		5343	@%userinput_arrows%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%#adding 4 inputfields for (x1;y1)---(x2;y2)%userinput inputfieldd%userdraw arrows,blue
15111	schaersvoo	5344	@%userinput_combined%size 400,400%xrange -10,10%yrange -10,10%functionlabel your function g(x)=%axis%axisnumbering%xlabel x-axis%ylabel y-axis%precision 0%grid 2,2,grey,3,3,5,grey%css color:blue;text-align:center%precision 1000%strokecolor red%opacity 255,255%userinput function%# note: number of function inputs not limited%userdraw line,blue
8386	schaersvoo	5345	*/
		5346	temp = get_string_argument(infile,1);
		5347	if(strstr(temp,"function") != 0 \|\| strstr(temp,"curve") != 0 \|\| strstr(temp,"plot") != 0 ){
		5348	if( js_function[DRAW_JSFUNCTION] != 1 ){
15111	schaersvoo	5349	js_function[JS_RAWMATH] = 1;
8386	schaersvoo	5350	js_function[DRAW_JSFUNCTION] = 1;
		5351	if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
15111	schaersvoo	5352	add_input_jsfunction(css_class,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1],font_size);
8386	schaersvoo	5353	input_cnt++;
		5354	}
10953	bpr	5355	else
8386	schaersvoo	5356	{
14078	bpr	5357	/* no need to add DRAW_JSFUNCTION, just call it with the parameters */
15111	schaersvoo	5358	fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",%s,%d,\"%s\",\"%.2f\",%d,%d,%d,%d);\n",input_cnt,css_class,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],font_size);
8386	schaersvoo	5359	input_cnt++;
		5360	}
15111	schaersvoo	5361	js_function[JS_MATH] = 1;
		5362	js_function[JS_PLOT] = 1;
8386	schaersvoo	5363	}
		5364	else
		5365	{
		5366	if(strstr(temp,"inputfield") != 0 ){
15111	schaersvoo	5367	js_function[JS_SAFE_EVAL] = 1;
		5368	js_function[ADD_USER_INPUTS] = 1;
8386	schaersvoo	5369	}
		5370	else
		5371	{
15111	schaersvoo	5372	canvas_error("userinput argument may be \"function\" or \"inputfield\"");
8386	schaersvoo	5373	}
		5374	}
		5375	break;
		5376	case USERINPUT_XY:
		5377	/*
		5378	@ userinput_xy
9372	schaersvoo	5379	@ keyword (no arguments required)
8386	schaersvoo	5380	@ to be used in combination with command "userdraw object_type,color"
17351	bpr	5381	@ if set two (or three) input fields are added to the document<br>(one for x-values, one for y-values and in case of drawing circle one for radius-values)
8386	schaersvoo	5382	@ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
17351	bpr	5383	@ math input is allowed (e.g something like: 1+3,2*6,1/3,sqrt(3), sin(pi/4),10^-2,log(2)...)<br>eval function is ''protected`` against code injection.
		5384	@ can <b>not</b> be combined with command ''intooltip tiptext`` <br>note: the ''tooltip div element`` is used for placing inputfields
8386	schaersvoo	5385	@ user drawings will not zoom on zooming (or pan on panning)
15651	reyssat	5386	@ use command ''css some_css`` to adjust the inputarea.
14071	bpr	5387	@ use command ''fontsize int`` to adjust the text labels (if needed)
13950	schaersvoo	5388	@%userinput_xy%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%precision 0%grid 2,2,grey,3,3,6,black%# provides inputfields for (x1:y1)---(x2:y2)%userinput_xy%linewidth 2%precision 1000%userdraw lines,blue
8386	schaersvoo	5389	*/
		5390	/* add simple eval check to avoid code injection with unprotected eval(string) */
15111	schaersvoo	5391	js_function[JS_SAFE_EVAL] = 1;
		5392	js_function[ADD_USER_INPUTS] = 1;
8386	schaersvoo	5393	break;
		5394
		5395	case USERINPUT_FUNCTION:
		5396	/*
		5397	@ userinput_function
15715	schaersvoo	5398	@ alternative: userinput
9372	schaersvoo	5399	@ keyword (no arguments required)
14078	bpr	5400	@ if set, a inputfield will be added to the page
8386	schaersvoo	5401	@ repeat keyword for more function input fields
		5402	@ the userinput value will be plotted in the canvas
17351	bpr	5403	@ this value may be read with <code>read_canvas()</code>. <br>for do it yourself js-scripters: If this is the first inputfield in the script, its id is canvas_input0
		5404	@ use before this command ''userinput_function``,<br>commands like ''css some_css``, ''xlabel some_description``, ''opacity int,int``, ''linewidth int``, ''dashed`` and ''dashtype int,int`` to modify
14071	bpr	5405	@ fontsize can be set using command ''fontsize int``
		5406	@ incompatible with command ''intooltip link_text_or_image``: it uses the tooltip div for adding the inputfield
15313	schaersvoo	5407	@%userinput_function%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%xlabel x-axis%ylabel y-axis%precision 0%grid 2,2,grey,2,2,5,grey%precision 1000%linewidth 2%# first inputfield%css color:blue;text-align:center;font-family:Italic;%strokecolor blue%functionlabel g(x)=:p(x)=:k(x)=%userinput function%# second inputfield%css color:green;text-align:center;font-family:Italic;%strokecolor green%userinput function%# third inputfield%css color:purple;text-align:center;font-family:Italic;%strokecolor purple%userinput function%# no limit in number of function inputfields
8386	schaersvoo	5408	*/
		5409	if( js_function[DRAW_JSFUNCTION] != 1 ){
		5410	js_function[DRAW_JSFUNCTION] = 1;
15111	schaersvoo	5411	js_function[JS_RAWMATH] = 1;
8386	schaersvoo	5412	if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
15111	schaersvoo	5413	add_input_jsfunction(css_class,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1],font_size);
8386	schaersvoo	5414	input_cnt++;
		5415	}
10953	bpr	5416	else
8386	schaersvoo	5417	{
14078	bpr	5418	/* no need to add DRAW_JSFUNCTION, just call it with the parameters */
15111	schaersvoo	5419	fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",%s,%d,\"%s\",\"%.2f\",%d,%d,%d,%d);\n",input_cnt,css_class,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],font_size);
8386	schaersvoo	5420	input_cnt++;
		5421	}
15111	schaersvoo	5422	js_function[JS_MATH] = 1;
		5423	js_function[JS_PLOT] = 1;
8386	schaersvoo	5424	break;
		5425
11806	schaersvoo	5426	case VLINE:
8386	schaersvoo	5427	/*
11806	schaersvoo	5428	@ vline x,y,color
15715	schaersvoo	5429	@ alternative: verticalline
15111	schaersvoo	5430	@ draw a vertical line through point (x:y) in color 'color'
11806	schaersvoo	5431	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a>
12107	schaersvoo	5432	@%vline%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%vline 0,0,red%onclick%vline 1,0,orange%onclick%vline 2,0,blue%onclick%vline 3,0,green
8386	schaersvoo	5433	*/
11806	schaersvoo	5434	for(i=0;i<3;i++) {
7614	schaersvoo	5435	switch(i){
11806	schaersvoo	5436	case 0: double_data[0] = get_real(infile,0);break; /* x-values */
		5437	case 1: double_data[1] = get_real(infile,0);break; /* y-values */
		5438	case 2: stroke_color=get_color(infile,1);/* name or hex color */
		5439	double_data[2] = double_data[0];
7614	schaersvoo	5440	decimals = find_number_of_digits(precision);
15111	schaersvoo	5441	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
		5442	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,100ymin,decimals,100ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5443	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5444	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[0],decimals,double_data[2],decimals,100ymin,decimals,100ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5445	add_to_buffer(tmp_buffer);
		5446	if(onclick != 0){object_cnt++;}
		5447	/* object_cnt++; */
8379	schaersvoo	5448	reset();
7614	schaersvoo	5449	break;
		5450	}
		5451	}
15111	schaersvoo	5452	dragstuff[4] = 1;
		5453	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	5454	break;
		5455
11806	schaersvoo	5456	case VLINES:
11802	schaersvoo	5457	/*
11806	schaersvoo	5458	@ vlines color,x1,y1,x2,y2....
15715	schaersvoo	5459	@ alternative: verticallines
15111	schaersvoo	5460	@ draw vertical lines through points (x1:y1),(x2:y2)... in color 'color'
11806	schaersvoo	5461	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually
13939	bpr	5462	@%vlines%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%vlines red,1,0,2,0,3,0,4,0
11802	schaersvoo	5463	*/
11806	schaersvoo	5464	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		5465	fill_color = stroke_color;
		5466	i=0;
		5467	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	5468	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	5469	if(i%2 == 0 ){
		5470	double_data[i] = get_real(infile,0); /* x */
7614	schaersvoo	5471	}
11806	schaersvoo	5472	else
		5473	{
		5474	double_data[i] = get_real(infile,1); /* y */
7983	schaersvoo	5475	}
11806	schaersvoo	5476	i++;
7983	schaersvoo	5477	}
11806	schaersvoo	5478	decimals = find_number_of_digits(precision);
15111	schaersvoo	5479	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	5480	for(c = 0 ; c < i-1 ; c = c+2){
15111	schaersvoo	5481	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c],decimals,ymin,decimals,ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5482	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5483	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,4,[%.f,%.f],[%.f,%.f],[0],[0],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c],decimals,ymin,decimals,ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5484	add_to_buffer(tmp_buffer);
		5485	if(onclick != 0){object_cnt++;}
		5486	/* object_cnt++; */
11806	schaersvoo	5487	}
		5488	reset();
15111	schaersvoo	5489	dragstuff[4] = 1;
		5490	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7983	schaersvoo	5491	break;
11806	schaersvoo	5492
		5493	case VIDEO:
7614	schaersvoo	5494	/*
11806	schaersvoo	5495	@ video x,y,w,h,videofile location
14066	bpr	5496	@ x,y: left top corner of audio element (in xrange / yrange)
		5497	@ w,y: width and height in pixels
		5498	@ video format may be in *.mp4 (todo: other formats)
13950	schaersvoo	5499	@%video%size 400,400%xrange -10,10%yrange -10,10%opacity 200,100%frect -9,9,6,-6,green%video -5,5,200,200,http://techslides.com/demos/sample-videos/small.mp4
7614	schaersvoo	5500	*/
15111	schaersvoo	5501	js_function[DRAW_VIDEO] = 1;
7614	schaersvoo	5502	for(i=0;i<5;i++){
		5503	switch(i){
11806	schaersvoo	5504	case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
14162	bpr	5505	case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system -> pixel */
11806	schaersvoo	5506	case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
		5507	case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
		5508	case 4: temp = get_string(infile,1);
14208	schaersvoo	5509	string_length = 1 + snprintf(NULL,0, "draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
		5510	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
11806	schaersvoo	5511	snprintf(tmp_buffer,string_length,"draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
7614	schaersvoo	5512	add_to_buffer(tmp_buffer);
		5513	break;
		5514	default:break;
		5515	}
		5516	}
		5517	reset();
		5518	break;
11806	schaersvoo	5519
7614	schaersvoo	5520	case X_AXIS_STRINGS:
		5521	/*
		5522	@ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
16832	bpr	5523	@ alternative: xaxistext
13936	bpr	5524	@ usable for commands <a href="#numberline">numberline</a> and <a href="#grid">grid</a> or combinations thereof
9346	schaersvoo	5525	@ use these x-axis num1...num_n values instead of default xmin...xmax
14071	bpr	5526	@ in case of command ''grid``. there is no need to use keyword <a href="#axisnumbering">axisnumbering</a>
13936	bpr	5527	@ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="#grid">grid</a>
17351	bpr	5528	@ use command ''fontcolor``, ''fontfamily`` to adjust font <br>defaults: black,12,Arial<br>note: command ''fontsize`` is not active for this command.(''fontsize`` can be used for the <a href="#legend">legend</a> in a <a href="#grid">grid</a>)
9346	schaersvoo	5529	@ a javascript error message will flag non-matching value:name pairs
14071	bpr	5530	@ if the ''x-axis words`` are too big and will overlap, a simple alternating offset will be applied
11044	schaersvoo	5531	@ to be used before command grid (see <a href="#grid">command grid</a>)
14078	bpr	5532	@ ''xmajor`` steps should be synchronised with numbers eg. ''1`` in the next example <code>grid 1,100,grey,1,4,6,grey</code>
13937	schaersvoo	5533	@%xaxistext%size 800,200%xrange -1,13%yrange -5,10%axis%xaxistext 1:january:2:february:3:march:4:april:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%grid 1,4,grey,1,2,10,red
7614	schaersvoo	5534	*/
11891	schaersvoo	5535	use_axis_numbering++;
7614	schaersvoo	5536	temp = get_string(infile,1);
		5537	if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
		5538	if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
11891	schaersvoo	5539	fprintf(js_include_file,"x_strings[%d] = [\"%s\"];x_strings_up[%d] = null;",use_axis_numbering,temp,use_axis_numbering);
7614	schaersvoo	5540	break;
9341	schaersvoo	5541	case X_AXIS_STRINGS_UP:
		5542	/*
		5543	@ xaxisup num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
15715	schaersvoo	5544	@ alternative: xaxistextup
9341	schaersvoo	5545	@ the text will be rotated 90° up
11044	schaersvoo	5546	@ no need to use keyword <a href="#axisnumbering">axisnumbering</a>
13936	bpr	5547	@ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="#grid">grid</a>
9346	schaersvoo	5548	@ use these x-axis num1...num_n values instead of default xmin...xmax
17351	bpr	5549	@ use command ''fontcolor``, <a href="#fontfamily">fontfamily</a> to adjust font <br>defaults: black,12,Arial<br>note: command ''fontsize`` is not active for this command.(''fontsize`` can be used for the <a href="#legend">legend</a> in a <a href="#grid">grid</a>)
9346	schaersvoo	5550	@ a javascript error message will flag non-matching value:name pairs
17351	bpr	5551	@ if the ''x-axis words`` are too big, they will overlap the graph<br> (in this case the text will start from ysize upwards)
11044	schaersvoo	5552	@ to be used before command grid (see <a href="#grid">command grid</a>)
14086	bpr	5553	@''xmajor`` steps should be synchronised with numbers eg. "1" in the next example <code>grid 1,100,grey,1,4,6,grey</code>
13937	schaersvoo	5554	@%xaxistextup%size 800,300%xrange -1,13%yrange -10,10%fontfamily Italic 18pt Courier%axis%xaxistextup 1:january:2:february:3:march:4:april:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%grid 1,4,grey,1,2,10,red
9341	schaersvoo	5555	*/
11891	schaersvoo	5556	use_axis_numbering++;
9341	schaersvoo	5557	temp = get_string(infile,1);
		5558	if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
		5559	if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
11891	schaersvoo	5560	fprintf(js_include_file,"x_strings_up[%d] = 1;x_strings[%d] = [\"%s\"];",use_axis_numbering,use_axis_numbering,temp);
9341	schaersvoo	5561	break;
8224	bpr	5562
11806	schaersvoo	5563	case XERRORBARS:
7614	schaersvoo	5564	/*
11806	schaersvoo	5565	@ xerrorbars color,E1,E2,x1,y1,x2,y2,...,x_n,y_n
15111	schaersvoo	5566	@ draw multiple points with x-errorbars E1 (error value left from point) and E2 (error value right from point) at given coordinates in color 'color'
11806	schaersvoo	5567	@ the errors E1 and E2 values are in xrange.
14071	bpr	5568	@ use command ''linewidth int`` to adust size
11806	schaersvoo	5569	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
12107	schaersvoo	5570	@%xerrorbars%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%drag xy%xerrorbars red,0.8,1.3,0,0,1,1,2,3,3,2,4,5,5,2,6,1,-1,-2,-2,0,-3,2,-4,4,-5,-1
12006	schaersvoo	5571
7614	schaersvoo	5572	*/
11806	schaersvoo	5573	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		5574	fill_color = stroke_color;
		5575	i=0;
		5576	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	5577	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11806	schaersvoo	5578	if(i%2 == 0 ){
		5579	double_data[i] = get_real(infile,0); /* x */
8071	schaersvoo	5580	}
11806	schaersvoo	5581	else
		5582	{
		5583	double_data[i] = get_real(infile,1); /* y */
7614	schaersvoo	5584	}
11806	schaersvoo	5585	i++;
7614	schaersvoo	5586	}
11806	schaersvoo	5587	decimals = find_number_of_digits(precision);
15111	schaersvoo	5588	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	5589	for(c = 2 ; c < i-1 ; c = c+2){
15111	schaersvoo	5590	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,20,[%.f],[%.f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5591	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5592	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,20,[%.f],[%.f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5593	add_to_buffer(tmp_buffer);
		5594	/* object_cnt++; */
		5595	if(onclick != 0){object_cnt++;}
11806	schaersvoo	5596	}
7614	schaersvoo	5597	reset();
15111	schaersvoo	5598	dragstuff[20] = 1;
		5599	if(use_dragstuff == 0 ){ use_dragstuff = 1; }
7614	schaersvoo	5600	break;
11806	schaersvoo	5601
17425	schaersvoo	5602	case NEWRANGE:
		5603	/*
		5604	@ newrange xmin,xmax,ymin,ymax
		5605	@ objects defined after command will make use of this new range
		5606	@ https://wimsedu.info/?topic=dessiner-des-portions-de-fonctions-sur-un-meme-graphe
		5607	*/
		5608	for(i = 0 ; i<4; i++){
		5609	switch(i){
		5610	case 0: xmin = get_real(infile,0);break;
		5611	case 1: xmax = get_real(infile,0);break;
		5612	case 2: ymin = get_real(infile,0);break;
		5613	case 3: ymax = get_real(infile,1);break;
		5614	default: break;
		5615	}
		5616	}
		5617	string_length = 1 + snprintf(NULL,0,"\n\nxmin = %f;xmax = %f;ymin = %f;ymax = %f;\n\n",xmin,xmax,ymin,ymax);
		5618	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5619	snprintf(tmp_buffer,string_length,"\n\nxmin = %f;xmax = %f;ymin = %f;ymax = %f;\n\n",xmin,xmax,ymin,ymax);
		5620	add_to_buffer(tmp_buffer);
		5621	break;
		5622
11806	schaersvoo	5623	case XRANGE:
7614	schaersvoo	5624	/*
11806	schaersvoo	5625	@ xrange xmin,xmax
15715	schaersvoo	5626	@ alternative: rangex
11806	schaersvoo	5627	@ if not given: 0,xsize (eg in pixels)
7614	schaersvoo	5628	*/
11806	schaersvoo	5629	for(i = 0 ; i<2; i++){
7614	schaersvoo	5630	switch(i){
11806	schaersvoo	5631	case 0: xmin = get_real(infile,0);break;
		5632	case 1: xmax = get_real(infile,1);break;
7614	schaersvoo	5633	default: break;
		5634	}
		5635	}
15111	schaersvoo	5636	if(xmin >= xmax){canvas_error(" xrange is not OK: xmin < xmax !");}
		5637	fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
11806	schaersvoo	5638	found_size_command++;
7614	schaersvoo	5639	break;
8386	schaersvoo	5640
11806	schaersvoo	5641	case XSNAPTOGRID:
7614	schaersvoo	5642	/*
11806	schaersvoo	5643	@ xsnaptogrid
		5644	@ keyword (no arguments required)
15111	schaersvoo	5645	@ a draggable object (use command ''drag x\|y\|xy``) will snap to the given x-grid values when dragged (mouseup)
		5646	@ in case of userdraw the drawn points will snap to xmajor grid
14078	bpr	5647	@ if no grid is defined, points will snap to every integer xrange value. (eg snap_x=1)
14071	bpr	5648	@ if you do not want a visible grid, but you only want a ''snaptogrid`` with some value...define this grid with opacity 0.
17351	bpr	5649	@ if xminor is defined (use keyword ''axis`` to activate xminor), the drawing will snap to xminor <br>use only even dividers in x-minor...for example<br><code>xsnaptogrid<br>axis<br>grid 2,1,grey,4,4,7,red</code><br> will snap on x=0, x=0.5, x=1, x=1.5 ....<br> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br>
13939	bpr	5650	@%xsnaptogrid_1%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 2%xsnaptogrid%userdraw segments,red%precision 1%display x,red,12
		5651	@%xsnaptogrid_2%size 400,400%xrange -10,10%yrange -10,10%grid 1,1,grey%linewidth 3%drag x%points red,0,0,0,0,0,0,0,0,0,0
12007	schaersvoo	5652
7614	schaersvoo	5653	*/
14038	schaersvoo	5654	use_snap = 2;
11806	schaersvoo	5655	break;
8386	schaersvoo	5656
11806	schaersvoo	5657	case XOFFSET:
7614	schaersvoo	5658	/*
12063	schaersvoo	5659	@ xoffset
13829	bpr	5660	@ keyword ; to place the text centered above the text coordinates(x:y) ...
		5661	@ may be used for points or other things requiring centered labels
12063	schaersvoo	5662	@ use <a href="#fontfamily">fontfamily</a> for setting the font
11811	schaersvoo	5663	@ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-library)
15313	schaersvoo	5664	@%xoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Arial%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
7614	schaersvoo	5665	*/
12063	schaersvoo	5666	use_offset = 2;
11806	schaersvoo	5667	break;
8386	schaersvoo	5668
11806	schaersvoo	5669	case XYOFFSET:
7614	schaersvoo	5670	/*
11806	schaersvoo	5671	@ xyoffset
		5672	@ keyword ; to place the text (x:y) to (x+dx:y+dy)... dx/dy are dependent on fontsize/fontfamily
13829	bpr	5673	@ may be used for points or other things requiring labels
12063	schaersvoo	5674	@ use <a href="#fontfamily">fontfamily</a> for setting the font
11806	schaersvoo	5675	@ only active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-librariy
17351	bpr	5676	@ in case of inputfields the inputfield will be centered x and y on its coordinates.<br>for example:<br>inputs 1,1,10,? <br>point 1,1,red <br> the point will be completely invisible<br>note: keyword ''xyoffset`` will also provide centering if used with <a href='#userdraw'>input(s),color</a>
15313	schaersvoo	5677	@%xyoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Arial%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
7614	schaersvoo	5678	*/
12063	schaersvoo	5679	use_offset = 3;
11806	schaersvoo	5680	break;
8386	schaersvoo	5681
7996	schaersvoo	5682	case XUNIT:
		5683	/*
		5684	@ xunit some_unit_for_x-values
		5685	@ unicode allowed (no html code)
15309	schaersvoo	5686	@ use together with command <a href="#display">display or mouse</a>
14071	bpr	5687	@ will display the cursor x-coordinate in ''unit``
12107	schaersvoo	5688	@%xunit%size 400,400%xrange -10,10%yrange -10,10%xunit cm \\u00B2%grid 2,2,grey%linewidth 2%userdraw segments,blue%display x,blue,18
7996	schaersvoo	5689	*/
		5690	fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
		5691	break;
11806	schaersvoo	5692
		5693	case XLABEL:
7996	schaersvoo	5694	/*
11806	schaersvoo	5695	@ xlabel some_string
15111	schaersvoo	5696	@ will be used to create a label for the x-axis (label is in quadrant I)
17351	bpr	5697	@ can only be used together with command ''grid``<br>not depending on keywords ''axis`` and ''axisnumbering``
		5698	@ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)<br>use command ''fontsize`` to adjust.<br>(command ''fontfamily`` is not active for this command)
15309	schaersvoo	5699	@ use <a href="#ylabel">ylabel</a>
		5700	@%xlabel%size 400,400%xrange -10,10%yrange -10,10%axis%axisnumbering%xlabel cm\\u00B2 %ylabel v\\u00B2 %precision 1%grid 2,2,grey,2,2,5,grey
7996	schaersvoo	5701	*/
11806	schaersvoo	5702	temp = get_string(infile,1);
		5703	fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
7996	schaersvoo	5704	break;
8071	schaersvoo	5705
11806	schaersvoo	5706	case XLOGBASE:
7991	schaersvoo	5707	/*
11806	schaersvoo	5708	@ xlogbase number
		5709	@ sets the logbase number for the x-axis
		5710	@ default value 10
		5711	@ use together with commands xlogscale / xylogscale
7991	schaersvoo	5712	*/
11806	schaersvoo	5713	fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
7991	schaersvoo	5714	break;
		5715
11806	schaersvoo	5716	case XLOGSCALE:
7614	schaersvoo	5717	/*
11806	schaersvoo	5718	@ xlogscale ymajor,yminor,majorcolor,minorcolor
14071	bpr	5719	@ the x/y-range are set using commands <code>xrange xmin,xmax</code> and <code>yrange ymin,ymax</code>
11806	schaersvoo	5720	@ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
14071	bpr	5721	@ the linewidth is set using command ''linewidth int``
14066	bpr	5722	@ the opacity of major / minor grid lines is set by command <a href='#opacity'>opacity</a>
14379	bpr	5723	@ default logbase number = 10 ... when needed, set the logbase number with command ''xlogbase number``
14071	bpr	5724	@ the x/y- axis numbering is triggered by keyword ''axisnumbering``<ul><li>use command ''precision`` before ''xlogscale`` command to set the precision (decimals) of the axis numbering</li><li>use commands ''xlabel some_text`` and/or ''ylabel some_text`` for text on axis: use command ''fontsize int`` to set the fontsize (default 12px)</li><li>use command ''fontfamily fnt_family_string`` to set the fonts for axis-numbering</li><li>use command ''fontcolor`` to set the colour</li></ul>
		5725	@ note: the complete canvas will be used for the ''log paper``
11806	schaersvoo	5726	@ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
17351	bpr	5727	@ note: command ''mouse color,fontsize`` will show the real values in the logpaper.<br>\
		5728	@ note: when using something like ''xrange 0.0001,0.01``...combined with commands <a href='#mouse'>mouse</a> and/or <a href='#userdraw'>userdraw</a>...<br> make sure the <a href='#precision'>precision</a> is set accordingly
14078	bpr	5729	@ note: in case of userdraw, the use of keyword <a href='#userinput_xy'>userinput_xy</a> may be handy !
14071	bpr	5730	@ <b>attention</b>: keyword ''snaptogrid`` may not lead to the desired result...
15111	schaersvoo	5731	@ <b>attention</b>: do not use command ''zoom``
12107	schaersvoo	5732	@%xlogscale%size 400,400%xrange 10,50000%yrange -5,5%xlabel x-axis%ylabel y-axis%xlogscale 10,1,black,grey%display x,red,22
7614	schaersvoo	5733	*/
11972	schaersvoo	5734	use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
11806	schaersvoo	5735	if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
15111	schaersvoo	5736	js_function[DRAW_XLOGSCALE] = 1;
11806	schaersvoo	5737	for(i=0;i<4;i++){
7614	schaersvoo	5738	switch(i){
11806	schaersvoo	5739	case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
		5740	case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
		5741	case 2: stroke_color = get_color(infile,0); break;
		5742	case 3: fill_color = get_color(infile,1);
14208	schaersvoo	5743	string_length = 1 + snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
		5744	tmp_buffer = my_newmem(string_length);
11806	schaersvoo	5745	snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
		5746	fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
		5747	add_to_buffer(tmp_buffer);
		5748	break;
7614	schaersvoo	5749	default:break;
		5750	}
		5751	}
		5752	break;
11806	schaersvoo	5753
		5754	case XYLOGSCALE:
7614	schaersvoo	5755	/*
11806	schaersvoo	5756	@ xylogscale majorcolor,minorcolor
14071	bpr	5757	@ the x/y-range are set using commands ''xrange xmin,xmax`` and ''yrange ymin,ymax``
		5758	@ the linewidth is set using command ''linewidth int``
		5759	@ the opacity of major / minor grid lines is set by command ''opacity [0-255],[0-255]``
14078	bpr	5760	@ default logbase number = 10 ... when needed, set the logbase number with command ''xlogbase number`` and/or ''ylogbase number``
14071	bpr	5761	@ the x/y- axis numbering is triggered by keyword ''axisnumbering``<ul><li>use commands ''xlabel some_text`` and/or ''ylabel some_text`` for text on axis: use command ''fontsize int`` to set the fontsize (default 12px)</li><li>use command ''fontfamily fnt_family_string`` to set the fonts for axis-numbering</li><li>use command ''fontcolor`` to set the colour</li></ul>
		5762	@ note: the complete canvas will be used for the ''log paper``
11806	schaersvoo	5763	@ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
17351	bpr	5764	@ note: command ''mouse color,fontsize`` will show the real values in the logpaper.<br>\
		5765	@ note: when using something like ''yrange 0.0001,0.01``...combined with commands ''mouse color,fontsize`` and/or ''userdraw type,color``...<br> make sure the precision is set accordingly (eg command ''precision 10000``)
14078	bpr	5766	@ note: in case of userdraw, the use of keyword ''userinput_xy`` may be handy !
14071	bpr	5767	@ <b>attention</b>: keyword ''snaptogrid`` may not lead to the desired result...
15111	schaersvoo	5768	@ <b>attention</b>: do not use command ''zoom``
13829	bpr	5769	@%xylogscale%size 400,400%xrange 10,50000%yrange 10,50000%xlabel x-axis%ylabel y-axis%xylogscale black,grey%display xy,red,22
7614	schaersvoo	5770	*/
11972	schaersvoo	5771	use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
11806	schaersvoo	5772	if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
15111	schaersvoo	5773	js_function[DRAW_XYLOGSCALE] = 1;
11806	schaersvoo	5774	for(i=0;i<2;i++){
7614	schaersvoo	5775	switch(i){
11806	schaersvoo	5776	case 0: stroke_color = get_color(infile,0); break;
		5777	case 1: fill_color = get_color(infile,1);
14208	schaersvoo	5778	string_length = 1 + snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
		5779	tmp_buffer = my_newmem(string_length);
11806	schaersvoo	5780	snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
		5781	fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
		5782	add_to_buffer(tmp_buffer);
		5783	break;
7614	schaersvoo	5784	default:break;
		5785	}
		5786	}
		5787	break;
11806	schaersvoo	5788
		5789
		5790	case Y_AXIS_STRINGS:
7647	schaersvoo	5791	/*
11806	schaersvoo	5792	@ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
15715	schaersvoo	5793	@ alternative: yaxistext
17351	bpr	5794	@ use command ''fontcolor``, ''fontfamily`` to adjust font <br>defaults: black,12,Arial<br> note: command ''fontsize`` is not active for this command.(''fontsize`` can be used for the <a href="#legend">legend</a> in a <a href="#grid">grid</a>)
11806	schaersvoo	5795	@ no need to use keyword <a href="#axisnumbering">axisnumbering</a>
13936	bpr	5796	@ use command <a href="#axis">axis</a> to have visual x/y-axis lines (see command <a href="#grid">grid</a>
14071	bpr	5797	@ use these y-axis num1...num_n values instead of default ymin...ymax
11806	schaersvoo	5798	@ a javascript error message will flag non-matching value:name pairs
		5799	@ to be used before command grid (see <a href="#grid">command grid</a>)
12107	schaersvoo	5800	@%yaxistext%size 400,400%yrange 0,13%xrange -100,500%axis%yaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december%#'ymajor' steps should be synchronised with numbers eg. "1" in this example%grid 100,1,grey,4,1,6,grey
7647	schaersvoo	5801	*/
11806	schaersvoo	5802	temp = get_string(infile,1);
		5803	if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
		5804	if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
		5805	fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
11891	schaersvoo	5806	use_axis_numbering++;
11806	schaersvoo	5807	break;
		5808
		5809
		5810	case YERRORBARS:
7614	schaersvoo	5811	/*
11806	schaersvoo	5812	@ yerrorbars color,E1,E2,x1,y1,x2,y2,...,x_n,y_n
15111	schaersvoo	5813	@ draw multiple points with y-errorbars E1 (error value under point) and E2 (error value above point) at given coordinates in color 'color'
11806	schaersvoo	5814	@ the errors E1 and E2 values are in yrange.
14071	bpr	5815	@ use command ''linewidth int`` to adust size
11806	schaersvoo	5816	@ may be set <a href="#drag">draggable</a> / <a href="#onclick">onclick</a> individually (!)
12107	schaersvoo	5817	@%yerrorbars%size 400,400%xrange -10,10%yrange -10,10%linewidth 2%onclick%yerrorbars red,0.8,1.3,0,0,1,1,2,3,3,2,4,5,5,2,6,1,-1,-2,-2,0,-3,2,-4,4,-5,-1
7614	schaersvoo	5818	*/
11806	schaersvoo	5819	stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
		5820	fill_color = stroke_color;
11772	schaersvoo	5821	i=0;
		5822	while( ! done ){ /* get next item until EOL*/
11997	schaersvoo	5823	if(i > MAX_INT - 1){canvas_error("too many points in argument: repeat command multiple times to fit");}
11772	schaersvoo	5824	if(i%2 == 0 ){
		5825	double_data[i] = get_real(infile,0); /* x */
		5826	}
		5827	else
		5828	{
		5829	double_data[i] = get_real(infile,1); /* y */
		5830	}
		5831	i++;
		5832	}
15111	schaersvoo	5833	if( use_slider != -1 && onclick == 0){ onclick = 3; }/* no drag&onclick but slideable */
11806	schaersvoo	5834	for(c = 2 ; c < i-1 ; c = c+2){
15111	schaersvoo	5835	string_length = 1 + snprintf(NULL,0,"dragstuff.addShape(new Shape(%d,%d,%d,%d,19,[%.f],[%.f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5836	check_string_length(string_length);tmp_buffer = my_newmem(string_length);
		5837	snprintf(tmp_buffer,string_length,"dragstuff.addShape(new Shape(%d,%d,%d,%d,19,[%.f],[%.f],[%.2f],[%.2f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%s,%s,%d));\n",drag_type,object_cnt,onclick,use_snap,decimals,double_data[c],decimals,double_data[c+1],double_data[0],double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,my_sliders,rotation_center,use_offset);
		5838	add_to_buffer(tmp_buffer);
		5839	/* object_cnt++; */
		5840	if(onclick != 0){object_cnt++;}
8083	schaersvoo	5841	}
11806	schaersvoo	5842	decimals = find_number_of_digits(precision);
8083	schaersvoo	5843	reset();
15111	schaersvoo	5844	dragstuff[19] = 1;
		5845	if(use_dragstuff == 0 ){ use_dragstuff = 1;}
11806	schaersvoo	5846	break;
11811	schaersvoo	5847	case YOFFSET:
		5848	/*
		5849	@ yoffset
14162	bpr	5850	@ keyword; to place the text centered above the text coordinates(x:y) ...
13829	bpr	5851	@ may be used for points or other things requiring centered labels
12063	schaersvoo	5852	@ use <a href="#fontfamily">fontfamily</a> for setting the font
		5853	@ may be active for commands <a href="#text">text</a> and <a href="#string">string</a> (e.g. objects in the drag/drop/onclick-library)
15313	schaersvoo	5854	@%yoffset%size 400,400%xrange -10,10%yrange -10,10%fontfamily 12pt Arial%string blue,-9,-9,no offset%point -9,-9,red%centered%string blue,-6,-6,centered%point -6,-6,red%xoffset%string blue,-3,-3,xoffset%point -3,-3,red%yoffset%string blue,0,0,yoffset%point 0,0,red%xyoffset%string blue,3,3,xyoffset%point 3,3,red%resetoffset%string blue,6,6,resetoffset%point 6,6,red
11811	schaersvoo	5855	*/
12063	schaersvoo	5856	use_offset = 1;
11811	schaersvoo	5857	break;
		5858
11806	schaersvoo	5859	case YRANGE:
7614	schaersvoo	5860	/*
11806	schaersvoo	5861	@ yrange ymin,ymax
15715	schaersvoo	5862	@ alternative: rangey
11806	schaersvoo	5863	@ if not given 0,ysize (eg in pixels)
7614	schaersvoo	5864	*/
11806	schaersvoo	5865	for(i = 0 ; i<2; i++){
7614	schaersvoo	5866	switch(i){
11806	schaersvoo	5867	case 0: ymin = get_real(infile,0);break;
		5868	case 1: ymax = get_real(infile,1);break;
		5869	default: break;
7614	schaersvoo	5870	}
		5871	}
17351	bpr	5872	if(ymin >= ymax){canvas_error(" yrange is not OK: ymin < ymax !<br>");}
15111	schaersvoo	5873	fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
11806	schaersvoo	5874	found_size_command++;
		5875	break;
		5876
		5877	case YSNAPTOGRID:
7614	schaersvoo	5878	/*
11806	schaersvoo	5879	@ ysnaptogrid
		5880	@ keyword (no arguments required)
14162	bpr	5881	@ a draggable object (use command ''drag x\|y\|xy``) will snap to the given y-grid values when dragged (mouseup)
11806	schaersvoo	5882	@ in case of userdraw the drawn points will snap to ymajor grid
14078	bpr	5883	@ if no grid is defined, points will snap to every integer yrange value. (eg snap_y=1)
14071	bpr	5884	@ if you do not want a visible grid, but you only want a ''snaptogrid`` with some value...define this grid with opacity 0.
17351	bpr	5885	@ if yminor is defined (use keyword ''axis`` to activate yminor), the drawing will snap to yminor <br>use only even dividers in y-minor...for example<br><code>ysnaptogrid<br>axis<br>grid 2,1,grey,4,4,7,red</code><br> will snap on x=0, x=0.5, x=1, x=1.5 ....<br> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br>
15111	schaersvoo	5886	@%ysnaptogrid_1%size 400,400%xrange -10,10%yrange -10,10%ysnaptogrid%grid 1,1,grey%linewidth 2%userdraw crosshairs,blue%css font-size:8px;color:blue%clearbutton delete all crosshairs
13959	bpr	5887	@%ysnaptogrid_2%size 400,400%xrange -10,10%yrange -10,10%ysnaptogrid%grid 1,1,grey%linewidth 3%drag y%points red,0,0,0,0,0,0,0,0,0,0
7614	schaersvoo	5888	*/
14038	schaersvoo	5889	use_snap = 3;
7614	schaersvoo	5890	break;
11080	schaersvoo	5891
7614	schaersvoo	5892	case YLABEL:
		5893	/*
		5894	@ ylabel some_string
8224	bpr	5895	@ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
17351	bpr	5896	@ can only be used together with command <a href="#grid">grid</a><br>not depending on keywords ''axis`` and ''axisnumbering``
		5897	@ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)<br>use command ''fontsize`` to adjust (command ''fontsize`` is not active for this command)
15309	schaersvoo	5898	@ use <a href="#xlabel">xlabel</a>
12107	schaersvoo	5899	@%ylabel%size 400,400%xrange -10,10%yrange -10,10%fontsize 8%axis%axisnumbering%precision 1%xlabel x-axis%ylabel y-axis%grid 1,1,grey,2,2,2,red
7614	schaersvoo	5900	*/
		5901	temp = get_string(infile,1);
7653	schaersvoo	5902	fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
7614	schaersvoo	5903	break;
7735	schaersvoo	5904	case YLOGBASE:
		5905	/*
		5906	@ ylogbase number
		5907	@ sets the logbase number for the y-axis
		5908	@ default value 10
		5909	@ use together with commands ylogscale / xylogscale
		5910	*/
		5911	fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
		5912	break;
7614	schaersvoo	5913	case YLOGSCALE:
7729	schaersvoo	5914	/*
		5915	@ ylogscale xmajor,xminor,majorcolor,minorcolor
14071	bpr	5916	@ the x/y-range are set using commands ''xrange xmin,xmax`` and ''yrange ymin,ymax``
7729	schaersvoo	5917	@ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
14071	bpr	5918	@ the linewidth is set using command ''linewidth int``
		5919	@ the opacity of major / minor grid lines is set by command ''opacity [0-255],[0-255]``
14078	bpr	5920	@ default logbase number = 10 ... when needed, set the logbase number with command ''ylogbase number``
14071	bpr	5921	@ the x/y- axis numbering is triggered by keyword ''axisnumbering``<ul><li>use command ''precision`` before ''ylogscale`` command to set the precision (decimals) of the axis numbering</li><li>use commands ''xlabel some_text`` and/or ''ylabel some_text`` for text on axis: use command ''fontsize int`` to set the fontsize (default 12px)</li><li>use command ''fontfamily fnt_family_string`` to set the fonts for axis-numbering</li><li>use command ''fontcolor`` to set the color</li></ul>
		5922	@ note: the complete canvas will be used for the ''log paper``
11088	schaersvoo	5923	@ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
17351	bpr	5924	@ note: command ''mouse color,fontsize`` will show the real values in the logpaper.<br>\
		5925	@ note: when using something like ''yrange 0.0001,0.01``...combined with commands ''mouse color,fontsize`` and/or ''userdraw type,color``...<br> make sure the precision is set accordingly (eg command ''precision 10000``)
14078	bpr	5926	@ note: in case of userdraw, the use of keyword ''userinput_xy`` may be handy !
15111	schaersvoo	5927	@ <b>attention</b>: do not use command ''zoom``
14071	bpr	5928	@ <b>attention</b>: keyword ''snaptogrid`` may not lead to the desired result...
7729	schaersvoo	5929	*/
11972	schaersvoo	5930	use_axis_numbering++;if(use_axis_numbering > 1){use_axis_numbering = 1;}
7729	schaersvoo	5931	if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
15111	schaersvoo	5932	js_function[DRAW_YLOGSCALE] = 1;
7729	schaersvoo	5933	for(i=0;i<4;i++){
		5934	switch(i){
		5935	case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
		5936	case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
		5937	case 2: stroke_color = get_color(infile,0); break;
8224	bpr	5938	case 3: fill_color = get_color(infile,1);
14208	schaersvoo	5939	string_length = 1 + snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
		5940	tmp_buffer = my_newmem(string_length);
7779	schaersvoo	5941	snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
7735	schaersvoo	5942	fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
7729	schaersvoo	5943	add_to_buffer(tmp_buffer);
		5944	break;
		5945	default:break;
		5946	}
		5947	}
7614	schaersvoo	5948	break;
11806	schaersvoo	5949
		5950	case YUNIT:
7735	schaersvoo	5951	/*
11806	schaersvoo	5952	@ yunit some_unit_for_y-values
		5953	@ unicode allowed (no html code)
		5954	@ use together with command mousey
14071	bpr	5955	@ will display the cursor y-coordinate in ''unit``
7735	schaersvoo	5956	*/
11806	schaersvoo	5957	fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
		5958	break;
		5959
		5960	case ZOOM:
		5961	/*
		5962	@ zoom button_color
15313	schaersvoo	5963	@ introduce a very small ''controlpanel`` at the lower right corner (font size of the panel is fixed to: 22px Arial)
17351	bpr	5964	@ giving six 15×15px ''active`` rectangle areas<br>(''×,↓,↑,←,→,−,+``) for zooming and/or panning of the image
15111	schaersvoo	5965	@ a mouse wheel is active for in/out zooming. Drag panning is not supported (this will conflict with many ''userdraw`` or ''multidraw`` primitives)
		5966	@ the ''controlpanel`` is not active for a ''userdraw`` mousedown (but it can interfere with some ''userdraw`` types)
		5967	@ the ''×`` symbol will reset to your original xmax/xmin ymax/ymin values.
		5968	@ choose an appropriate color, so the small ''×,↓,↑,←,→,−,+`` are clearly visible
14071	bpr	5969	@ command ''opacity`` may be used to set stroke_opacity of buttons
15111	schaersvoo	5970	@ note: on zooming, text will not increase / decrease the font size (todo??)
15116	bpr	5971	@ note: adding ''zooming`` will increase the size of the javascript include with approx. 11 kb
11806	schaersvoo	5972	*/
15111	schaersvoo	5973	js_function[INTERACTIVE] = 1;
		5974	js_function[JS_ZOOM] = 1;
		5975	if( use_userdraw == 1 ){
		5976	js_function[USERDRAW_AND_ZOOM] = 1;
		5977	fprintf(js_include_file,"forbidden_zone = [%d,%d];",xsize-115,ysize - 20);
		5978	}
		5979	if(jsplot_cnt != -1){ js_function[JSPLOT_AND_ZOOM] = 1;}
11806	schaersvoo	5980	stroke_color = get_color(infile,1);
		5981	/* we use BG_CANVAS (0) */
15111	schaersvoo	5982	add_js_zoom_buttons(stroke_color,stroke_opacity);
11806	schaersvoo	5983	done = TRUE;
		5984	break;
		5985
		5986	/* ready */
7614	schaersvoo	5987	default:sync_input(infile);
		5988	break;
		5989	}
8224	bpr	5990	}
7614	schaersvoo	5991	/* we are done parsing script file */
15111	schaersvoo	5992	if(use_dragstuff != 0){
		5993	/* add the 20kb drag code: nearly always used ... use_dragstuff==1: no-mouse ! */
		5994	add_drag_code(DRAG_CANVAS,use_dragstuff,dragstuff,reply_format);
		5995	if(js_function[JS_ZOOM] == 1){
		5996	js_function[DRAG_AND_ZOOM] = 1;
		5997	}
		5998	}
15116	bpr	5999
14066	bpr	6000	/* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize: Quadrant I */
7983	schaersvoo	6001	if( found_size_command == 1 ){
		6002	fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
		6003	}
		6004	else
		6005	{
		6006	if( found_size_command != 3 ){
15111	schaersvoo	6007	canvas_error("Please specify size first and then both xrange and yrange ...");
7983	schaersvoo	6008	}
		6009	}
8257	schaersvoo	6010
14066	bpr	6011	/* if needed, add generic draw functions (grid / xml etc) to buffer: these are no draggable/clickable shapes / objects ! */
15111	schaersvoo	6012	add_javascript_function();
7614	schaersvoo	6013	/* add read_canvas() etc functions if needed */
15111	schaersvoo	6014	if( reply_format > 0 ){ add_read_canvas(reply_format,reply_precision);}
7797	schaersvoo	6015	/* no zoom, just add buffer */
15111	schaersvoo	6016	fprintf(js_include_file,"\n/* add buffer /\n%s};\n/ end wims_canvas_function */\nwims_canvas_function%d();\n",buffer,canvas_root_id);
7614	schaersvoo	6017	/* done writing the javascript include file */
		6018	fclose(js_include_file);
		6019	}
		6020
		6021	/* if using a tooltip, this should always be printed to the .phtml file, so stdout /
9329	schaersvoo	6022	if( use_tooltip > 0 ){
		6023	if( use_tooltip == 1 ){
15111	schaersvoo	6024	add_js_tooltip(tooltip_text,bgcolor);
9329	schaersvoo	6025	}
		6026	else
		6027	{
		6028	if( use_tooltip == 2 ){
15111	schaersvoo	6029	add_js_popup(getfile_cmd);
9329	schaersvoo	6030	}
		6031	}
		6032	}
7614	schaersvoo	6033	exit(EXIT_SUCCESS);
		6034	}
		6035	/* end main() */
		6036
15111	schaersvoo	6037
7614	schaersvoo	6038	/******************************************************************************
		6039	**
		6040	** sync_input
		6041	**
		6042	** synchronises input line - reads to end of line, leaving file pointer
		6043	** at first character of next line.
		6044	**
		6045	** Used by:
		6046	** main program - error handling.
		6047	**
		6048	******************************************************************************/
		6049	void sync_input(FILE *infile)
		6050	{
		6051	int c = 0;
		6052
7658	schaersvoo	6053	if( c == '\n' \|\| c == ';' ) return;
		6054	while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
7614	schaersvoo	6055	if( c == EOF ) finished = 1;
7658	schaersvoo	6056	if( c == '\n' \|\| c == '\r' \|\| c == ';') line_number++;
7614	schaersvoo	6057	return;
		6058	}
		6059
		6060	/******************************************************************************/
		6061
15111	schaersvoo	6062
		6063	void transform(int num,int incr){
		6064	/*.
		6065	only "double_data[]" is used for transformations !!
		6066	*/
		6067	int i;int ii;double x,y;
		6068	for(i=0;i<num;i = i+incr){
		6069	ii = i+1;
		6070	x = double_data[i]affine_matrix[0] + double_data[ii]affine_matrix[1]+affine_matrix[4];
		6071	y = double_data[i]affine_matrix[2] + double_data[ii]affine_matrix[3]+affine_matrix[5];
15601	schaersvoo	6072	/*
17351	bpr	6073	printf("(%f:%f) → (%f:%f)<br>",double_data[i],double_data[ii],x,y);
15601	schaersvoo	6074	*/
15111	schaersvoo	6075	double_data[i] = x;
		6076	double_data[ii] = y;
		6077	}
		6078	}
		6079
		6080	void rotate(int num,double angle,double center[],int incr){
		6081	int i;int ii;double rad = angle * 0.0174532925199;
		6082	double c = cos(rad);
		6083	double s = sin(rad);
		6084	double x,y;
		6085	for(i=0;i<num;i = i+incr){
		6086	ii = i+1;
		6087	x = c(double_data[i]-center[0]) + s(double_data[ii] - center[1] ) + center[0];
		6088	y = c(double_data[ii]-center[1]) - s(double_data[i] - center[0] ) + center[1];
		6089	double_data[i] = x;
		6090	double_data[ii] = y;
17351	bpr	6091	// printf("(x:y) - (%f:%f)<br>",x,y);
15111	schaersvoo	6092	}
		6093	}
		6094	/* not used: see transform()
		6095	void translate(int num){
		6096	int i;int ii;
		6097	double x,y;
		6098	for(i=0;i<num;i = i+2){
		6099	ii = i+1;
		6100	x = double_data[i] + affine_matrix[4];
		6101	y = double_data[ii] + affine_matrix[5];
		6102	double_data[i] = x;
		6103	double_data[ii] = y;
		6104	}
		6105	}
		6106	*/
7614	schaersvoo	6107	char str_replace(const char str, const char old, const char new){
		6108	if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
		6109	char ret, r;
		6110	const char p, q;
		6111	size_t oldlen = strlen(old);
		6112	size_t count = 0;
		6113	size_t retlen = 0;
		6114	size_t newlen = strlen(new);
		6115	if (oldlen != newlen){
		6116	for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
		6117	count++;
		6118	retlen = p - str + strlen(p) + count * (newlen - oldlen);
		6119	}
8224	bpr	6120	}
7614	schaersvoo	6121	else
		6122	{
		6123	retlen = strlen(str);
		6124	}
8224	bpr	6125
7614	schaersvoo	6126	if ((ret = malloc(retlen + 1)) == NULL){
		6127	ret = NULL;
		6128	canvas_error("string argument is NULL");
		6129	}
		6130	else
		6131	{
		6132	for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
		6133	size_t l = q - p;
		6134	memcpy(r, p, l);
		6135	r += l;
		6136	memcpy(r, new, newlen);
		6137	r += newlen;
		6138	}
		6139	strcpy(r, p);
		6140	}
		6141	return ret;
		6142	}
		6143
		6144	/******************************************************************************/
7848	bpr	6145
7614	schaersvoo	6146	char get_color(FILE infile , int last){
		6147	int c,i = 0,is_hex = 0;
		6148	char temp[MAX_COLOR_STRING], *string;
8305	schaersvoo	6149	const char *not_allowed = "0123456789";
10891	schaersvoo	6150	while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) && ( c != '\t' ) ){
7614	schaersvoo	6151	if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
		6152	if( c == '#' ){
		6153	is_hex = 1;
		6154	}
		6155	if( c != ' '){
17351	bpr	6156	if( is_hex == 0 ){if(strchr(not_allowed,c) != 0){canvas_error("found something like a number...but is should have been a colour or #hex color number...<br>Do not use R,G,B !!! ");}}
7614	schaersvoo	6157	temp[i]=tolower(c);
		6158	i++;
		6159	}
		6160	}
10891	schaersvoo	6161	if( ( c == '\n' \|\| c == EOF \|\| c == ';' \|\| c == '\t' ) && last == 0){canvas_error("expecting more arguments in command");}
		6162	if( c == '\n' \|\| c == ';' \|\| c == '\t' ){ done = TRUE; line_number++; }
7614	schaersvoo	6163	if( c == EOF ){finished = 1;}
		6164	if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
		6165	temp[i]='\0';
		6166	if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
		6167	if( is_hex == 1 ){
		6168	char red[3], green[3], blue[3];
		6169	red[0] = toupper(temp[1]); red[1] = toupper(temp[2]); red[2] = '\0';
		6170	green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
		6171	blue[0] = toupper(temp[5]); blue[1] = toupper(temp[6]); blue[2] = '\0';
		6172	int r = (int) strtol(red, NULL, 16);
		6173	int g = (int) strtol(green, NULL, 16);
		6174	int b = (int) strtol(blue, NULL, 16);
14408	schaersvoo	6175	int L0 = 1+snprintf(NULL,0,"%d,%d,%d",r,g,b);
		6176	string = my_newmem(L0);
		6177	snprintf(string,L0,"%d,%d,%d",r,g,b);
7614	schaersvoo	6178	return string;
		6179	}
		6180	else
		6181	{
		6182	string = (char *)my_newmem(sizeof(temp));
		6183	snprintf(string,sizeof(temp),"%s",temp);
8304	schaersvoo	6184	for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
7614	schaersvoo	6185	if( strcmp( colors[i].name , string ) == 0 ){
		6186	return colors[i].rgb;
		6187	}
		6188	}
8304	schaersvoo	6189	canvas_error("I was expecting a color name or hexnumber...but found nothing.");
7614	schaersvoo	6190	}
8304	schaersvoo	6191	return "0,0,255";
7614	schaersvoo	6192	}
		6193
14066	bpr	6194	char get_string(FILE infile,int last){ /* last = 0: more arguments ; last=1 final argument */
7614	schaersvoo	6195	int c,i=0;
		6196	char temp[MAX_BUFFER], *string;
10891	schaersvoo	6197	while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != '\t') ){
7614	schaersvoo	6198	temp[i]=c;
		6199	i++;
		6200	if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
		6201	}
10891	schaersvoo	6202	if( ( c == '\n' \|\| c == '\t' \|\| c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
		6203	if( c == '\n' \|\| c == '\t') { done = TRUE; line_number++; }
11022	schaersvoo	6204	if( c == EOF ) {finished = 1;}
7614	schaersvoo	6205	temp[i]='\0';
15722	obado	6206	if( strlen(temp) == 0 && last != 3 ){ canvas_error("expected a word or string, but found nothing!");}
7614	schaersvoo	6207	string=(char *)my_newmem(strlen(temp));
		6208	snprintf(string,sizeof(temp),"%s",temp);
		6209	return string;
		6210	}
		6211
14066	bpr	6212	char get_string_argument(FILE infile,int last){ /* last = 0: more arguments ; last=1 final argument */
7614	schaersvoo	6213	int c,i=0;
		6214	char temp[MAX_BUFFER], *string;
10891	schaersvoo	6215	while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != '\t') && ( c != ',')){
7614	schaersvoo	6216	temp[i]=c;
		6217	i++;
		6218	if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
		6219	}
8224	bpr	6220	if( ( c == '\n' \|\| c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
10891	schaersvoo	6221	if( c == '\n' \|\| c == '\t' ) { line_number++; }
7614	schaersvoo	6222	if( c == EOF ) {finished = 1;}
9478	schaersvoo	6223	if( finished == 1 && last == 0 ){ canvas_error("expected more arguments");}
7614	schaersvoo	6224	temp[i]='\0';
10953	bpr	6225	/*
8322	schaersvoo	6226	17.10.2014 removed (question Perrin)
		6227	may cause some unwanted effects...
14078	bpr	6228	if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma), but found nothing !!");}
8322	schaersvoo	6229	*/
7614	schaersvoo	6230	string=(char *)my_newmem(sizeof(temp));
		6231	snprintf(string,sizeof(temp),"%s",temp);
		6232	done = TRUE;
		6233	return string;
		6234	}
		6235
14066	bpr	6236	double get_real(FILE infile, int last){ / accept anything that looks like an number ? last = 0: more arguments ; last=1 final argument */
7614	schaersvoo	6237	int c,i=0,found_calc = 0;
		6238	double y;
		6239	char tmp[MAX_INT];
10953	bpr	6240	/*
14066	bpr	6241	these things are 'allowed functions': *,^,+,-,/,(,),e,arc,cos,tan,pi,log,ln,sqrt,abs
8383	schaersvoo	6242	but there should be a better way to avoid segfaults !
8348	schaersvoo	6243	*/
		6244	const char allowed = "earcostanpilogqb+-/^()";/* assuming these are allowed stuff in a 'number'*/
		6245	const char not_allowed = "#dfhjkmuvwxyz{}[]%&~!$";/ avoid segmentation faults in a "atof()" and "wims eval" */
10891	schaersvoo	6246	while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && (c != '\t') && ( c != ';')){
7614	schaersvoo	6247	if( c != ' ' ){
8224	bpr	6248	if( i == 0 && c == '+' ){
7614	schaersvoo	6249	continue;
8224	bpr	6250	}
7614	schaersvoo	6251	else
		6252	{
8304	schaersvoo	6253	c = tolower(c);
		6254	if( strchr(not_allowed,c) != 0 ){canvas_error("found a character not associated with a number...");}
		6255	if( strchr(allowed,c) != 0 ){found_calc = 1;}/* hand the string over to wims eval() */
7614	schaersvoo	6256	tmp[i] = c;
		6257	i++;
		6258	}
		6259	}
		6260	if( i > MAX_INT - 1){canvas_error("number too large");}
		6261	}
10891	schaersvoo	6262	if( ( c == '\n' \|\| c == EOF \|\| c == ';' \|\| c == '\t' ) && last == 0){canvas_error("expecting more arguments in command");}
		6263	if( c == '\n' \|\| c == ';' \|\| c == '\t' ){ done = TRUE; line_number++; }
7614	schaersvoo	6264	if( c == EOF ){done = TRUE ; finished = 1;}
		6265	tmp[i]='\0';
15633	bpr	6266	if( strlen(tmp) == 0 ){canvas_error("expected a number, but found nothing !!");}
8304	schaersvoo	6267	if( found_calc == 1 ){ /* use wims eval to calculate 2pi/3 /
7848	bpr	6268	void *f = eval_create(tmp);
7614	schaersvoo	6269	assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
7848	bpr	6270	y = eval_x(f, 1);
14066	bpr	6271	/* if function is bogus; y = 1: so no core dumps */
7848	bpr	6272	eval_destroy(f);
7614	schaersvoo	6273	}
		6274	else
		6275	{
		6276	y = atof(tmp);
		6277	}
		6278	return y;
		6279	}
8304	schaersvoo	6280
13829	bpr	6281
7614	schaersvoo	6282	void canvas_error(char *msg){
17351	bpr	6283	fprintf(stdout,"\n</script><hr><span style=\"color:red\">FATAL syntax error: line %d: %s</span><hr>",line_number,msg);
7614	schaersvoo	6284	finished = 1;
		6285	exit(EXIT_SUCCESS);
		6286	}
		6287
		6288
		6289	/* convert x/y coordinates to pixel */
		6290	int x2px(double x){
		6291	return xxsize/(xmax - xmin) - xsizexmin/(xmax - xmin);
		6292	}
		6293
		6294	int y2px(double y){
		6295	return -1yysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
		6296	}
		6297
		6298	double px2x(int x){
		6299	return (x*(xmax - xmin)/xsize + xmin);
		6300	}
		6301	double px2y(int y){
		6302	return (y*(ymax - ymin)/ysize + ymin);
		6303	}
		6304
		6305	void add_to_buffer(char *tmp){
17351	bpr	6306	//fprintf(stdout,"tmp = %s<br>buffer = %s<br>",tmp,buffer);
7614	schaersvoo	6307	if( tmp == NULL \|\| tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
		6308	/* do we have enough space left in buffer[MAX_BUFFER] ? */
		6309	int space_left = (int) (sizeof(buffer) - strlen(buffer));
		6310	if( space_left > strlen(tmp)){
		6311	strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
		6312	}
		6313	else
		6314	{
17351	bpr	6315	canvas_error("your memory buffer is too big<br>simplify your script...it produces too many lines ");
7614	schaersvoo	6316	}
		6317	tmp = NULL;free(tmp);
		6318	return;
		6319	}
		6320
		6321	void reset(){
15111	schaersvoo	6322	if(no_reset == FALSE){ /* 8/5/2020 */
		6323	use_filled = FALSE;
		6324	use_dashed = FALSE;
		6325	if(onclick != 4 ){onclick = 0;} /* slider param 'active'... onclick=4 */
		6326	drag_type = -1;
		6327	use_offset = 0;
15601	schaersvoo	6328	}
7614	schaersvoo	6329	}
		6330
15111	schaersvoo	6331	char getMML(char tex){
		6332	int my_pipe[2];pid_t pid;
		6333	if(pipe(my_pipe)){canvas_error("mathml(): pipe() failure.\n");}
		6334	pid = fork();
		6335	if (pid == (pid_t) 0){
		6336	char *argv[]={"wims_mathml","--use-zoom","0","--tex-size 100%","--max-mml-size","1024","--tex-string",tex,NULL};
		6337	close(my_pipe[0]);dup2(my_pipe[1], 1);dup2(my_pipe[1], 2);close(my_pipe[1]);
		6338	execv("../bin/wims_mathml",argv);canvas_error("could not execute wims_mathml\n");
		6339	}
		6340	else
15116	bpr	6341	{
15111	schaersvoo	6342	if (pid < (pid_t) 0){
15116	bpr	6343	close(my_pipe[0]);close(my_pipe[1]);canvas_error("mathml(): fork() failure.\n");
15111	schaersvoo	6344	}
		6345	int status;FILE *stream;close(my_pipe[1]);stream = fdopen (my_pipe[0], "r");
		6346	char buffer[MAX_BUFFER+1];memset(buffer,'\0',MAX_BUFFER);
		6347	fgets(buffer, MAX_BUFFER, stream);
		6348	int L0 = 1 + snprintf(NULL,0,"%s", buffer);
		6349	tex = my_newmem(L0);memset(tex,'\0',L0);
		6350	snprintf(tex,L0,"%s",buffer);
15116	bpr	6351	fclose (stream);close(my_pipe[0]);waitpid(pid, &status, 0);
15111	schaersvoo	6352	}
		6353	return tex;
		6354	}
7614	schaersvoo	6355
15111	schaersvoo	6356	char getSVGMOL(char inputtype,char *keys){
		6357	int idx;
		6358	char *forbidden[] = {"-O","-H","-z","-L","-o","-m"};
		6359	char *argv[1+strlen(keys)];
		6360	argv[0] = "obabel"; argv[1] = "-i"; argv[2] = inputtype;
		6361	idx = 3;int i;
		6362	char *ptr = strtok(keys,",");
		6363	while(ptr != NULL ){
		6364	for(i = 0 ; i < 6; i++ ){if( strncmp(ptr,forbidden[i],2) == 0 ){return "NOT ALLOWED ARGUMENT";}}
		6365	argv[idx] = ptr; idx++;
17351	bpr	6366	if(idx > 18){canvas_error("too many arguments for obabel....see docs<br>");}
15111	schaersvoo	6367	ptr = strtok(NULL,",");
		6368	}
		6369	/* last arguments; no 'javascript', only 'svg to STDOUT' and 'NULL' */
		6370	argv[idx] = "-xj";argv[idx+1] = "-o"; argv[idx+2] = "svg";argv[idx+3] = NULL;
		6371	int link[2];
		6372	pid_t pid;
		6373	char buffer[MAX_BUFFER+1];
		6374	memset(buffer,'\0',MAX_BUFFER);
		6375	if (pipe(link)==-1){canvas_error("pipe");}
		6376	if ((pid = fork()) == -1){canvas_error("fork");}
15116	bpr	6377
15111	schaersvoo	6378	char *svgmol = "error";
		6379	int string_length = 0;
15116	bpr	6380
15111	schaersvoo	6381	if(pid == 0) {
		6382	dup2 (link[1], STDOUT_FILENO);
		6383	dup2(link[0], STDERR_FILENO);/* remove annoying messages '1 molecule converted' */
		6384	close(link[0]);
		6385	close(link[1]);
		6386	execvp("obabel",argv);
		6387	} else {
		6388	close(link[1]);
18109	schaersvoo	6389	read(link[0],buffer, sizeof(buffer));
15111	schaersvoo	6390	close(link[0]);
		6391	/* need to remover newline from svg-string on freebsd */
		6392	char *pch = strstr(buffer, "\n");
		6393	while(pch != NULL){
		6394	strncpy(pch, " ", 1);
		6395	pch = strstr(buffer, "\n");
		6396	}
		6397	string_length = 1 + snprintf(NULL,0,"%s",buffer);
		6398	svgmol= my_newmem(string_length);
		6399	snprintf(svgmol,string_length,"%s",buffer);
		6400	wait(NULL);
		6401	}
		6402	return svgmol;
		6403	}
7614	schaersvoo	6404
		6405
15111	schaersvoo	6406	/* GNU libmatheval library for evaluating mathematical functions. */
15601	schaersvoo	6407	char eval(int xsize,int ysize,char fun,double xmin,double xmax,double ymin,double ymax,int plotsteps,int precision,double rotationcenter[]){
15111	schaersvoo	6408	void *f;
		6409	double x;
		6410	double y;
15601	schaersvoo	6411	double xorg;
15111	schaersvoo	6412	int xv;
		6413	int i = 0;
		6414	int xstep =(int)(xsize/plotsteps);
		6415	if( xstep == 0 ){xstep = 1;}
		6416	double a = (xmax - xmin)/xsize;
		6417	f = eval_create(fun);
		6418	assert (f);
		6419	if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
		6420	/* we supply the true x/y values...draw_curve() will convert these (x:y) to pixels : used for pan/scale */
		6421	double xydata[MAX_BUFFER+1];/* hmmm */
		6422	int lim_ymin =(int)( ymin - 4fabs(ymin));/ 19-4-2015 replacing "abs" by "fabs"*/
		6423	int lim_ymax =(int)( ymax + 4fabs(ymax));/ 19-4-2015 replacing "abs" by "fabs"*/
15669	schaersvoo	6424	double c = 1.0;double s = 1.0;
15601	schaersvoo	6425	if( use_rotate == TRUE ){s = sin(angle0.0174533);c = cos(angle0.0174533);}
15111	schaersvoo	6426	for ( xv = 0 ;xv < xsize ; xv = xv+xstep ){
		6427	x = (double) (xv*a + xmin);
15601	schaersvoo	6428	xorg = x;
15111	schaersvoo	6429	if( i < MAX_BUFFER - 2){
		6430	y = eval_x(f, x);
		6431	if(y < lim_ymax && y > lim_ymin ){
15540	schaersvoo	6432	if( use_affine == TRUE ){
		6433	x = xaffine_matrix[0] + yaffine_matrix[1]+affine_matrix[4];
15601	schaersvoo	6434	y = xorgaffine_matrix[2] + yaffine_matrix[3]+affine_matrix[5];
15540	schaersvoo	6435	}
15601	schaersvoo	6436	if( use_rotate == TRUE){
		6437	x = (c * (x - rotationcenter[0])) + (s * (y - rotationcenter[1])) + rotationcenter[0];
		6438	y = (c * (y - rotationcenter[1])) - (s * (xorg - rotationcenter[0])) + rotationcenter[1];
		6439	}
15111	schaersvoo	6440	xydata[i++] = x;
		6441	xydata[i++] = y;
		6442	}
		6443	}
		6444	else
		6445	{
		6446	canvas_error("\nYour curve plotting produces too many data \n Use less plotsteps or some other means to reduce the amount of data... ");
		6447	}
		6448	}
		6449	eval_destroy(f);
		6450	return double_xy2js_array(xydata,i,find_number_of_digits(precision));
		6451	}
		6452	/* plot a very primitive (!) levelcurve : not to be compared with "flydraw levelcurve" */
		6453	char eval_levelcurve(int xsize,int ysize,char fun,double xmin,double xmax,double ymin,double ymax,int plotsteps,int precision,double level){
		6454	void *f = eval_create(fun);
		6455	assert (f);
		6456	if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
		6457	double a = (double)((xmax - xmin)/plotsteps);
		6458	double b = (double)((ymax - ymin)/plotsteps);
15669	schaersvoo	6459	double x;double y;double diff;
15111	schaersvoo	6460	double xydata[MAX_BUFFER+1];
		6461	int i = 0;
		6462	ymin = ymin - 1;
		6463	xmin = xmin - 1;
		6464	ymax = ymax + 1;
		6465	xmax = xmax + 1;
		6466	for( x = xmin ;x < xmax ; x = x + a ){
		6467	for ( y = ymin ;y < ymax ; y = y + b ){
		6468	if( i < MAX_BUFFER - 2){
		6469	diff = level - eval_x_y(f, x,y);
		6470	if(diff < 0.1 && diff > -0.1){
		6471	xydata[i++] = x;
		6472	xydata[i++] = y;
		6473	}
		6474	}
		6475	else
		6476	{
		6477	canvas_error("\nYour curve plotting produces too many data \n Use less plotsteps, decrease image size...\nor some other means to reduce the amount of data... ");
		6478	}
		6479	}
		6480	}
		6481	eval_destroy(f);
		6482	return double_xy2js_array(xydata,i,find_number_of_digits(precision));
		6483	}
7614	schaersvoo	6484
15111	schaersvoo	6485	/* plot parametric function */
		6486	char eval_parametric(int xsize,int ysize,char fun1,char* fun2,double xmin,double xmax,double ymin,double ymax,
15601	schaersvoo	6487	double tmin,double tmax,int plotsteps,int precision,double rotationcenter[]){
15111	schaersvoo	6488	void *fx;
		6489	void *fy;
		6490	double t;
		6491	int i = 0;
		6492	double tstep = (tmax-tmin)/plotsteps;
		6493	if( tstep == 0 ){canvas_error("zero step for t variable : reduce plotsteps or inrease trange");}
		6494	fx = eval_create(fun1);
		6495	fy = eval_create(fun2);
		6496	assert(fx);
		6497	assert(fy);
		6498	if( fx == NULL \|\| fy == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
		6499	/* we supply the true x/y values...draw_curve() will convert these (x:y) to pixels : used for pan/scale */
		6500	double xydata[MAX_BUFFER+1];/* hmmm */
		6501	double x; /* real x-values */
		6502	double y; /* real y-values */
15601	schaersvoo	6503	double xorg;
15623	schaersvoo	6504	/*
		6505	29/12/2020
15633	bpr	6506	disabled to try and synchronise curve+affine behaviour in complex scripts produced by "elec, tool circuit" (BPR)
15623	schaersvoo	6507	int lim_ymin =(int)( ymin - 4*fabs(ymin));
		6508	int lim_ymax =(int)( ymax + 4*fabs(ymax));
		6509	*/
15669	schaersvoo	6510	double c = 1.0;double s = 1.0;if( use_rotate == TRUE ){s = sin(angle0.0174533);c = cos(angle0.0174533);}
15111	schaersvoo	6511	for( t = tmin ;t <= tmax ; t = t + tstep ){
		6512	if( i < MAX_BUFFER - 2 ){
		6513	y = eval_t(fy, t);
15623	schaersvoo	6514	/* if(y > lim_ymin && y < lim_ymax){*/
15111	schaersvoo	6515	x = eval_t(fx, t);
15628	schaersvoo	6516	if( x == x){ /* no NaN */
		6517	xorg = x;
		6518	if( use_affine == TRUE ){
		6519	x = xaffine_matrix[0] + yaffine_matrix[1]+affine_matrix[4];
		6520	y = xorgaffine_matrix[2] + yaffine_matrix[3]+affine_matrix[5];
		6521	}
		6522	if( use_rotate == TRUE){
		6523	x = (c * (x - rotationcenter[0])) + (s * (y - rotationcenter[1])) + rotationcenter[0];
		6524	y = (c * (y - rotationcenter[1])) - (s * (xorg - rotationcenter[0])) + rotationcenter[1];
		6525	}
		6526	xydata[i++] = x;
		6527	xydata[i++] = y;
15540	schaersvoo	6528	}
15629	bpr	6529
15623	schaersvoo	6530	/* } */
15111	schaersvoo	6531	}
		6532	else
		6533	{
		6534	canvas_error("\nYour curve plotting produces too many data \n Use less plotsteps or some other means to reduce the amount of data... ");
		6535	}
		6536	}
		6537	eval_destroy(fx);
		6538	eval_destroy(fy);
		6539	return double_xy2js_array(xydata,i,find_number_of_digits(precision));
		6540	}
7614	schaersvoo	6541
15111	schaersvoo	6542	char *double_xy2js_array(double xy[],int len,int decimals){
		6543	/*
		6544	1,2,3,4,5,6,7,8 --> [1,3,5,7],[2,4,6,8]
		6545	int xy[] is already checked for errors or overflow in "get_real()"
		6546	just to be sure we double check the size of "temp"
7614	schaersvoo	6547	*/
15111	schaersvoo	6548	char temp[2MAX_BUFFER], string;
		6549	char tmp = my_newmem(16);/ <= 9999999999999999 */
		6550	memset(temp,'\0',2MAX_BUFFER);/ clear memory */
		6551	int i;int space_left;
		6552	temp[0] = '[';/* start js-array */
		6553	for(i = 0; i < len;i = i + 2){ /* x_points[] */
		6554	if(i == len - 2){sprintf(tmp, "%.f",decimals, xy[i]);}else{sprintf(tmp, "%.f,",decimals,xy[i]);}
		6555	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6556	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data \nreduce your image size or plotsteps ");}
		6557	}
		6558	strncat(temp,"],[",4); /* close js x_values array and start new */
		6559	for(i = 1; i < len;i = i + 2){ /* y_points */
		6560	if(i == len - 1){ sprintf(tmp, "%.f",decimals,xy[i]);}else{sprintf(tmp, "%.f,",decimals,xy[i]);}
		6561	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6562	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data \nreduce your image size or plotsteps");}
		6563	}
		6564	strncat(temp,"]",2);
		6565	string=(char *)my_newmem(sizeof(temp));
		6566	snprintf(string,sizeof(temp),"%s",temp);
		6567	return string;
		6568	}
7614	schaersvoo	6569
15111	schaersvoo	6570	char list2js_array(char list, char s){/ abc:defg:hjiuy:qwer --> ["abc","defg","hjiuy","qwer"] */
		6571	#define MAX_ARG 128
15116	bpr	6572	if( strlen(list)> MAX_ARG - 1){canvas_error("argument is too large (> 128)");}
15111	schaersvoo	6573	char tmp[MAX_ARG];
		6574	size_t p = 0;
		6575	tmp[0] = '[';
		6576	tmp[1] = '\"';
		6577	size_t t = 2;
		6578	while(list[p] != '\0'){
		6579	if( list[p] == s[0] ){
		6580	tmp[t++]='\"';tmp[t++]=',';tmp[t++]='\"';
		6581	}
		6582	else
		6583	{
		6584	tmp[t++] = list[p];
		6585	}
		6586	p++;
		6587	}
		6588	tmp[t++]='\"';tmp[t++]=']';tmp[t++]= '\0';
		6589	char js_array = (char )my_newmem(sizeof(tmp));
		6590	snprintf(js_array,sizeof(tmp),"%s",tmp);
		6591	return js_array;
		6592	}
7963	schaersvoo	6593
15111	schaersvoo	6594	char *xy2js_array(int xy[],int len){
		6595	/*
		6596	1,2,3,4,5,6,7,8 --> [1,3,5,7],[2,4,6,8]
		6597	int xy[] is already checked for errors or overflow in "get_real()"
		6598	just to be sure we double check the size of "temp"
7614	schaersvoo	6599	*/
15111	schaersvoo	6600	char temp[MAX_BUFFER], *string;
		6601	char tmp = my_newmem(16);/ <= 9999999999999999 */
		6602	memset(temp,'\0',MAX_BUFFER);/* clear memory */
		6603	int i;int space_left;
		6604	temp[0] = '[';/* start js-array */
		6605	for(i = 0; i < len;i = i + 2){ /* x_points[] */
		6606	if(i == len - 2){sprintf(tmp, "%d", xy[i]);}else{sprintf(tmp, "%d,", xy[i]);}
		6607	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6608	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data \nreduce image size or plotsteps ");}
		6609	}
		6610	strncat(temp,"],[",4); /* close js x_values array and start new */
		6611	for(i = 1; i < len;i = i + 2){ /* y_points */
		6612	if(i == len - 1){ sprintf(tmp, "%d", xy[i]);}else{sprintf(tmp, "%d,", xy[i]);}
		6613	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6614	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data\nreduce image size or plotsteps \n");}
		6615	}
		6616	strncat(temp,"]",2);
		6617	string=(char *)my_newmem(sizeof(temp));
		6618	snprintf(string,sizeof(temp),"%s",temp);
		6619	return string;
7614	schaersvoo	6620	}
		6621
15111	schaersvoo	6622	char *data2js_array(int data[],int len){
		6623	/*
		6624	1,2,3,4,5,6,7,8 --> [1,2,3,4,5,6,7,8]
		6625	int data[] is already checked for errors or overflow in "get_real()"
		6626	just to be sure we double check the size of "temp"
7614	schaersvoo	6627	*/
15111	schaersvoo	6628	char temp[MAX_BUFFER], *string;
		6629	char tmp = my_newmem(16);/ <= 9999999999999999 */
		6630	memset(temp,'\0',MAX_BUFFER);/* clear memory */
		6631	int i;int space_left;
		6632	temp[0] = '[';/* start js-array */
		6633	for(i = 0; i < len; i++){
		6634	if(i == len - 1){sprintf(tmp, "%d", data[i]);}else{sprintf(tmp, "%d,", data[i]);}
		6635	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6636	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data \nreduce image size or plotsteps ");}
		6637	}
		6638	strncat(temp,"]",2);
		6639	string=(char *)my_newmem(sizeof(temp));
		6640	snprintf(string,sizeof(temp),"%s",temp);
		6641	return string;
		6642	}
7614	schaersvoo	6643
15111	schaersvoo	6644	char *doubledata2js_array(double data[],int len, int decimals){
		6645	/*
15116	bpr	6646	1.4355,2.345353,3.3455 --> [1.44,2.35,3.35]
15111	schaersvoo	6647	double data[] is already checked for errors or overflow in "get_real()"
		6648	just to be sure we double check the size of "temp"
8448	schaersvoo	6649	*/
15111	schaersvoo	6650	char temp[MAX_BUFFER], *string;
		6651	char tmp = my_newmem(16);/ <= 9999999999999999 */
		6652	memset(temp,'\0',MAX_BUFFER);/* clear memory */
		6653	int i;int space_left;
		6654	temp[0] = '[';/* start js-array */
		6655	for(i = 0; i < len; i++){
		6656	if(i == len - 1){sprintf(tmp, "%.f",decimals,data[i]);}else{sprintf(tmp, "%.f,",decimals,data[i]);}
		6657	space_left = (int) (sizeof(temp) - strlen(temp) - strlen(tmp) - 1);
		6658	if( space_left > 0 ){ strncat(temp,tmp,space_left - 1);}else{canvas_error("can not parse integer to js-array:\nYour curve plotting produces too many data \nreduce image size or plotsteps ");}
		6659	}
		6660	strncat(temp,"]",2);
		6661	string=(char *)my_newmem(sizeof(temp));
		6662	snprintf(string,sizeof(temp),"%s",temp);
		6663	return string;
		6664	}
13829	bpr	6665
8224	bpr	6666
15111	schaersvoo	6667	void *my_newmem(size_t size){
		6668	void *p;
		6669	if((p = malloc(size +1)) == NULL){canvas_error("canvasdraw: ran out of memory\n");}
		6670	return p;
		6671	}
8224	bpr	6672
15111	schaersvoo	6673	int find_number_of_digits(int i){
		6674	if(i < 0 ){ i = -1*i;}
		6675	int digits = 0;
		6676	while ( i > 0){
		6677	digits++;
		6678	i = i/10;
		6679	}
		6680	return digits;
		6681	}
7645	schaersvoo	6682
16828	schaersvoo	6683	int count_substring(char* string, char* substring) {
		6684	int i, j, l1, l2;
		6685	int count = 0;
		6686	l1 = strlen(string);
		6687	l2 = strlen(substring);
		6688	for(i = 0; i < l1 - l2 + 1; i++) {
		6689	if(strstr(string + i, substring) == string + i) {
		6690	count++;
		6691	i = i + l2 -1;
		6692	}
		6693	}
		6694	return count;
		6695	}
11830	schaersvoo	6696
8224	bpr	6697
		6698
7614	schaersvoo	6699	void check_string_length(int L){
9466	schaersvoo	6700	if( L > MAX_BUFFER-1){
7614	schaersvoo	6701	canvas_error("problem with your arguments to command...");
		6702	}
		6703	return;
		6704	}
		6705
		6706	int get_token(FILE *infile){
		6707	int c,i=0;
		6708	char temp[MAX_INT], *input_type;
		6709	char *line="line",
		6710	*audio="audio",
		6711	*blink="blink",
		6712	*arrowhead="arrowhead",
		6713	*crosshairsize="crosshairsize",
		6714	*crosshair="crosshair",
		6715	*crosshairs="crosshairs",
		6716	*audioobject="audioobject",
		6717	*style="style",
		6718	*mouse="mouse",
7991	schaersvoo	6719	*mousex="mousex",
		6720	*mousey="mousey",
8071	schaersvoo	6721	*mouse_display="display",
		6722	*mouse_degree="mouse_degree",
7614	schaersvoo	6723	*userdraw="userdraw",
		6724	*highlight="highlight",
		6725	*http="http",
		6726	*rays="rays",
		6727	*dashtype="dashtype",
		6728	*dashed="dashed",
		6729	*filled="filled",
		6730	*lattice="lattice",
		6731	*parallel="parallel",
		6732	*segment="segment",
8299	schaersvoo	6733	*segments="segments",
7614	schaersvoo	6734	*dsegment="dsegment",
9374	schaersvoo	6735	*dsegments="dsegments",
7614	schaersvoo	6736	*seg="seg",
9383	schaersvoo	6737	*segs="segs",
7614	schaersvoo	6738	*bgimage="bgimage",
		6739	*bgcolor="bgcolor",
		6740	*strokecolor="strokecolor",
		6741	*backgroundimage="backgroundimage",
		6742	*text="text",
		6743	*textup="textup",
		6744	*mouseprecision="mouseprecision",
		6745	*precision="precision",
		6746	*plotsteps="plotsteps",
		6747	*plotstep="plotstep",
		6748	*tsteps="tsteps",
		6749	*curve="curve",
		6750	*dcurve="dcurve",
14038	schaersvoo	6751	*curvedarrow="curvedarrow",
		6752	*curvedarrows="curvedarrows",
		6753	*curvedarrow2="curvedarrow2",
		6754	*curvedarrows2="curvedarrows2",
7614	schaersvoo	6755	*plot="plot",
		6756	*dplot="dplot",
7788	schaersvoo	6757	*levelcurve="levelcurve",
7614	schaersvoo	6758	*fontsize="fontsize",
		6759	*fontcolor="fontcolor",
		6760	*axis="axis",
		6761	*axisnumbering="axisnumbering",
		6762	*axisnumbers="axisnumbers",
		6763	*arrow="arrow",
9382	schaersvoo	6764	*vector="vector",
		6765	*vectors="vectors",
7614	schaersvoo	6766	*darrow="darrow",
		6767	*arrow2="arrow2",
		6768	*darrow2="darrow2",
8304	schaersvoo	6769	*arrows="arrows",
8347	schaersvoo	6770	*arrows2="arrows2",
7614	schaersvoo	6771	*zoom="zoom",
		6772	*grid="grid",
		6773	*hline="hline",
7786	schaersvoo	6774	*dhline="dhline",
7614	schaersvoo	6775	*drag="drag",
		6776	*horizontalline="horizontalline",
9383	schaersvoo	6777	*horizontallines="horizontallines",
7614	schaersvoo	6778	*vline="vline",
7786	schaersvoo	6779	*dvline="dvline",
7614	schaersvoo	6780	*verticalline="verticalline",
9383	schaersvoo	6781	*verticallines="verticallines",
7614	schaersvoo	6782	*triangle="triangle",
9306	schaersvoo	6783	*triangles="triangles",
7614	schaersvoo	6784	*ftriangle="ftriangle",
9374	schaersvoo	6785	*ftriangles="ftriangles",
7614	schaersvoo	6786	*mathml="mathml",
		6787	*html="html",
		6788	*input="input",
8146	schaersvoo	6789	*clearbutton="clearbutton",
9386	schaersvoo	6790	*erase="erase",
		6791	*delete="delete",
15111	schaersvoo	6792	*css="css",
7614	schaersvoo	6793	*textarea="textarea",
15773	schaersvoo	6794	*range="range",
7614	schaersvoo	6795	*trange="trange",
		6796	*ranget="ranget",
		6797	*xrange="xrange",
		6798	*yrange="yrange",
		6799	*rangex="rangex",
		6800	*rangey="rangey",
8370	schaersvoo	6801	*path="path",
7614	schaersvoo	6802	*polyline="polyline",
18155	schaersvoo	6803	*dpolyline="dpolyline",
8351	schaersvoo	6804	*brokenline="brokenline",
7614	schaersvoo	6805	*lines="lines",
		6806	*poly="poly",
		6807	*polygon="polygon",
		6808	*fpolygon="fpolygon",
		6809	*fpoly="fpoly",
		6810	*filledpoly="filledpoly",
		6811	*filledpolygon="filledpolygon",
		6812	*rect="rect",
		6813	*frect="frect",
		6814	*rectangle="rectangle",
		6815	*frectangle="frectangle",
		6816	*square="square",
		6817	*fsquare="fsquare",
9374	schaersvoo	6818	*fsquares="fsquares",
8363	schaersvoo	6819	*rects="rects",
		6820	*frects="frects",
7614	schaersvoo	6821	*dline="dline",
		6822	*arc="arc",
		6823	*filledarc="filledarc",
9374	schaersvoo	6824	*farc="farc",
7614	schaersvoo	6825	*size="size",
		6826	*string="string",
		6827	*stringup="stringup",
		6828	*copy="copy",
		6829	*copyresized="copyresized",
		6830	*opacity="opacity",
		6831	*transparent="transparent",
		6832	*fill="fill",
		6833	*point="point",
		6834	*points="points",
		6835	*linewidth="linewidth",
		6836	*circle="circle",
8304	schaersvoo	6837	*circles="circles",
7614	schaersvoo	6838	*fcircle="fcircle",
9374	schaersvoo	6839	*fcircles="fcircles",
7614	schaersvoo	6840	*disk="disk",
9374	schaersvoo	6841	*disks="disks",
7614	schaersvoo	6842	*comment="#",
		6843	*end="end",
		6844	*ellipse="ellipse",
12110	schaersvoo	6845	*ellipses="ellipses",
7614	schaersvoo	6846	*fellipse="fellipse",
		6847	*rotate="rotate",
7785	schaersvoo	6848	*affine="affine",
9907	schaersvoo	6849	*rotationcenter="rotationcenter",
15716	schaersvoo	6850	*kill="kill",
9907	schaersvoo	6851	*killrotate="killrotate",
7785	schaersvoo	6852	*killaffine="killaffine",
15111	schaersvoo	6853	*killlinear="killlinear",
		6854	*killinear="killinear",
7614	schaersvoo	6855	*fontfamily="fontfamily",
		6856	*fillcolor="fillcolor",
		6857	*clicktile="clicktile",
		6858	*clicktile_colors="clicktile_colors",
		6859	*translation="translation",
		6860	*translate="translate",
		6861	*killtranslation="killtranslation",
		6862	*killtranslate="killtranslate",
		6863	*onclick="onclick",
8370	schaersvoo	6864	*roundrects="roundrects",
7614	schaersvoo	6865	*roundrect="roundrect",
		6866	*froundrect="froundrect",
9374	schaersvoo	6867	*froundrects="froundrects",
7614	schaersvoo	6868	*roundrectangle="roundrectangle",
		6869	*patternfill="patternfill",
		6870	*hatchfill="hatchfill",
		6871	*diafill="diafill",
7647	schaersvoo	6872	*diamondfill="diamondfill",
7614	schaersvoo	6873	*dotfill="dotfill",
11830	schaersvoo	6874	*textfill="textfill",
7614	schaersvoo	6875	*gridfill="gridfill",
		6876	*imagefill="imagefill",
7735	schaersvoo	6877	*xlogbase="xlogbase",
		6878	*ylogbase="ylogbase",
7614	schaersvoo	6879	*xlogscale="xlogscale",
		6880	*ylogscale="ylogscale",
		6881	*xylogscale="xylogscale",
		6882	*intooltip="intooltip",
9329	schaersvoo	6883	*popup="popup",
7614	schaersvoo	6884	*replyformat="replyformat",
		6885	*floodfill="floodfill",
11772	schaersvoo	6886	*fillall="fillall",
7614	schaersvoo	6887	*filltoborder="filltoborder",
		6888	*setpixel="setpixel",
		6889	*pixels="pixels",
		6890	*pixelsize="pixelsize",
		6891	*xaxis="xaxis",
9341	schaersvoo	6892	*xaxisup="xaxisup",
7614	schaersvoo	6893	*yaxis="yaxis",
		6894	*xaxistext="xaxistext",
9341	schaersvoo	6895	*xaxistextup="xaxistextup",
7614	schaersvoo	6896	*yaxistext="yaxistext",
		6897	*piechart="piechart",
9433	schaersvoo	6898	*boxplot="boxplot",
9465	schaersvoo	6899	*boxplotdata="boxplotdata",
		6900	*userboxplot="userboxplot",
		6901	*userboxplotdata="userboxplotdata",
7614	schaersvoo	6902	*legend="legend",
		6903	*legendcolors="legendcolors",
		6904	*xlabel="xlabel",
		6905	*ylabel="ylabel",
		6906	*barchart="barchart",
		6907	*linegraph="linegraph",
		6908	*clock="clock",
		6909	*animate="animate",
		6910	*video="video",
		6911	*status="status",
7877	schaersvoo	6912	*nostatus="nostatus",
7652	schaersvoo	6913	*snaptogrid="snaptogrid",
7784	schaersvoo	6914	*xsnaptogrid="xsnaptogrid",
		6915	*ysnaptogrid="ysnaptogrid",
8379	schaersvoo	6916	*snaptopoints="snaptopoints",
9213	schaersvoo	6917	*snaptofunction="snaptofunction",
		6918	*snaptofun="snaptofun",
7654	schaersvoo	6919	*userinput_xy="userinput_xy",
8193	schaersvoo	6920	*userinput_function="userinput_function",
8222	schaersvoo	6921	*userinput="userinput",
7823	schaersvoo	6922	*jsmath="jsmath",
7858	schaersvoo	6923	*trace_jscurve="trace_jscurve",
7838	schaersvoo	6924	*setlimits="setlimits",
7858	schaersvoo	6925	*jscurve="jscurve",
		6926	*jsplot="jsplot",
7983	schaersvoo	6927	*sgraph="sgraph",
7984	schaersvoo	6928	*title="title",
7996	schaersvoo	6929	*centerstring="centerstring",
		6930	*xunit="xunit",
8071	schaersvoo	6931	*yunit="yunit",
8101	schaersvoo	6932	*slider="slider",
8105	schaersvoo	6933	*killslider="killslider",
16872	schaersvoo	6934	*killgroup="killgroup",
8244	schaersvoo	6935	*angle="angle",
8365	schaersvoo	6936	*halflines="halflines",
		6937	*demilines="demilines",
8244	schaersvoo	6938	*halfline="halfline",
8297	schaersvoo	6939	*demiline="demiline",
8366	schaersvoo	6940	*hlines="hlines",
		6941	*vlines="vlines",
8370	schaersvoo	6942	*bezier="bezier",
9213	schaersvoo	6943	*functionlabel="functionlabel",
15313	schaersvoo	6944	*functionlabels="functionlabels",
16872	schaersvoo	6945	*group="group",
9213	schaersvoo	6946	*multidraw="multidraw",
15111	schaersvoo	6947	*multilinewidth="multilinewidth",
14622	schaersvoo	6948	*linewidths="linewidths",
9213	schaersvoo	6949	*multistrokecolors="multistrokecolors",
15111	schaersvoo	6950	*multicolors="multicolors",
		6951	*strokecolors="strokecolors",
14622	schaersvoo	6952	*colors="colors",
9213	schaersvoo	6953	*multifillcolors="multifillcolors",
14622	schaersvoo	6954	*fillcolors="fillcolors",
9213	schaersvoo	6955	*multistrokeopacity="multistrokeopacity",
		6956	*multifillopacity="multifillopacity",
		6957	*multifill="multifill",
		6958	*multidash="multidash",
		6959	*multilabel="multilabel",
		6960	*multiuserinput="multiuserinput",
14038	schaersvoo	6961	*multiinput="multiinput",
9289	schaersvoo	6962	*multisnaptogrid="multisnaptogrid",
14038	schaersvoo	6963	*multisnap="multisnap",
9289	schaersvoo	6964	*protractor="protractor",
9386	schaersvoo	6965	*ruler="ruler",
		6966	*cursor="cursor",
9427	schaersvoo	6967	*pointer="pointer",
		6968	*yerrorbars="yerrorbars",
11006	schaersvoo	6969	*xerrorbars="xerrorbars",
11044	schaersvoo	6970	*noxaxis="noxaxis",
		6971	*noyaxis="noyaxis",
11767	schaersvoo	6972	*colorpalette="colorpalette",
14038	schaersvoo	6973	*imagepalette="imagepalette",
12063	schaersvoo	6974	*yoffset="yoffset",
11802	schaersvoo	6975	*xoffset="xoffset",
14225	schaersvoo	6976	*latex="latex",
15111	schaersvoo	6977	*katex="katex",
		6978	*math="math",
11802	schaersvoo	6979	*centered="centered",
		6980	*xyoffset="xyoffset",
		6981	*resetoffset="resetoffset",
11837	schaersvoo	6982	*fillpattern="fillpattern",
15601	schaersvoo	6983	*settile="settile",
11890	schaersvoo	6984	*numberline="numberline",
14393	schaersvoo	6985	*duplicates="duplicates",
		6986	*allowdups="allowdups",
15111	schaersvoo	6987	*linear="linear",
		6988	*obabel="obabel",
		6989	*chemtex="chemtex",
		6990	*noreset="noreset",
		6991	*killreset="killreset",
15690	schaersvoo	6992	*arrowarc="arrowarc",
		6993	*arcarrow="arcarrow",
17425	schaersvoo	6994	*newrange="newrange",
11006	schaersvoo	6995	*canvastype="canvastype";
7614	schaersvoo	6996
10891	schaersvoo	6997	while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')&&(c!='\t')){
		6998	if( i == 0 && (c == ' ') ){ continue; /* white spaces or tabs allowed before first command identifier */
		6999	}else{
		7000	if( c == ' ' ){
7614	schaersvoo	7001	break;
10891	schaersvoo	7002	}else{
		7003	temp[i] = c;
		7004	if(i > MAX_INT - 2){canvas_error("command string too long !");}
		7005	i++;
		7006	}
		7007	}
		7008	if(temp[0] == '#'){ break; }
7614	schaersvoo	7009	}
10891	schaersvoo	7010	if (c == '\n' \|\| c == '\r' \|\| c == '\t' ){ line_number++; }
		7011	if (c == EOF) {finished=1;return 0;}
7614	schaersvoo	7012
		7013	temp[i]='\0';
18157	schaersvoo	7014	if(strstr(temp,"dash") !=0 && strlen(temp) > 4 ){
18155	schaersvoo	7015	/* 4/2024 adapt to Flydraw's dashing syntax for all objects with prefix "dash" */
		7016	use_dashed = TRUE;int idx=0;
18157	schaersvoo	7017	for(int p = 4; p < strlen(temp); p++){temp[idx] = temp[p];idx++;}
		7018	input_type = (char*)my_newmem(idx); snprintf(input_type,idx+1,"%s",temp);
		7019	}else{
		7020	input_type=(char*)my_newmem(strlen(temp));
		7021	snprintf(input_type,sizeof(temp),"%s",temp);
18155	schaersvoo	7022	}
		7023	/* fprintf(stdout,"input_type = %s<br/>",input_type);*/
7614	schaersvoo	7024	if( strcmp(input_type, size) == 0 ){
		7025	free(input_type);
		7026	return SIZE;
		7027	}
15773	schaersvoo	7028	if( strcmp(input_type, range) == 0 ){
		7029	free(input_type);
		7030	return RANGE;
		7031	}
7614	schaersvoo	7032	if( strcmp(input_type, xrange) == 0 ){
		7033	free(input_type);
		7034	return XRANGE;
		7035	}
		7036	if( strcmp(input_type, rangex) == 0 ){
		7037	free(input_type);
		7038	return XRANGE;
		7039	}
		7040	if( strcmp(input_type, trange) == 0 ){
		7041	free(input_type);
		7042	return TRANGE;
		7043	}
		7044	if( strcmp(input_type, ranget) == 0 ){
		7045	free(input_type);
		7046	return TRANGE;
		7047	}
17425	schaersvoo	7048	if( strcmp(input_type, newrange) == 0 ){
		7049	free(input_type);
		7050	return NEWRANGE;
		7051	}
7614	schaersvoo	7052	if( strcmp(input_type, yrange) == 0 ){
		7053	free(input_type);
		7054	return YRANGE;
		7055	}
		7056	if( strcmp(input_type, rangey) == 0 ){
		7057	free(input_type);
		7058	return YRANGE;
		7059	}
		7060	if( strcmp(input_type, linewidth) == 0 ){
		7061	free(input_type);
		7062	return LINEWIDTH;
		7063	}
		7064	if( strcmp(input_type, dashed) == 0 ){
		7065	free(input_type);
		7066	return DASHED;
		7067	}
		7068	if( strcmp(input_type, dashtype) == 0 ){
		7069	free(input_type);
		7070	return DASHTYPE;
		7071	}
		7072	if( strcmp(input_type, axisnumbering) == 0 ){
		7073	free(input_type);
		7074	return AXIS_NUMBERING;
		7075	}
		7076	if( strcmp(input_type, axisnumbers) == 0 ){
		7077	free(input_type);
		7078	return AXIS_NUMBERING;
		7079	}
		7080	if( strcmp(input_type, axis) == 0 ){
		7081	free(input_type);
		7082	return AXIS;
		7083	}
		7084	if( strcmp(input_type, grid) == 0 ){
		7085	free(input_type);
		7086	return GRID;
		7087	}
9383	schaersvoo	7088	if( strcmp(input_type, hlines) == 0 \|\| strcmp(input_type, horizontallines) == 0 ){
8366	schaersvoo	7089	free(input_type);
		7090	return HLINES;
		7091	}
9383	schaersvoo	7092	if( strcmp(input_type, vlines) == 0 \|\| strcmp(input_type, verticallines) == 0 ){
8366	schaersvoo	7093	free(input_type);
		7094	return VLINES;
		7095	}
9383	schaersvoo	7096	if( strcmp(input_type, hline) == 0 \|\| strcmp(input_type, horizontalline) == 0 ){
7614	schaersvoo	7097	free(input_type);
		7098	return HLINE;
		7099	}
		7100	if( strcmp(input_type, vline) == 0 \|\| strcmp(input_type, verticalline) == 0 ){
		7101	free(input_type);
		7102	return VLINE;
		7103	}
		7104	if( strcmp(input_type, line) == 0 ){
		7105	free(input_type);
		7106	return LINE;
		7107	}
9383	schaersvoo	7108	if( strcmp(input_type, segments) == 0 \|\| strcmp(input_type, segs) == 0 ){
8299	schaersvoo	7109	free(input_type);
		7110	return SEGMENTS;
		7111	}
7614	schaersvoo	7112	if( strcmp(input_type, seg) == 0 \|\| strcmp(input_type, segment) == 0 ){
		7113	free(input_type);
		7114	return SEGMENT;
		7115	}
9374	schaersvoo	7116	if( strcmp(input_type, dsegments) == 0 ){
		7117	free(input_type);
		7118	use_dashed = TRUE;
		7119	return SEGMENTS;
		7120	}
7614	schaersvoo	7121	if( strcmp(input_type, dsegment) == 0 ){
		7122	free(input_type);
		7123	use_dashed = TRUE;
		7124	return SEGMENT;
		7125	}
		7126	if( strcmp(input_type, crosshairsize) == 0 ){
		7127	free(input_type);
		7128	return CROSSHAIRSIZE;
		7129	}
		7130	if( strcmp(input_type, arrowhead) == 0 ){
		7131	free(input_type);
		7132	return ARROWHEAD;
		7133	}
		7134	if( strcmp(input_type, crosshairs) == 0 ){
		7135	free(input_type);
		7136	return CROSSHAIRS;
		7137	}
		7138	if( strcmp(input_type, crosshair) == 0 ){
		7139	free(input_type);
		7140	return CROSSHAIR;
		7141	}
		7142	if( strcmp(input_type, onclick) == 0 ){
		7143	free(input_type);
		7144	return ONCLICK;
		7145	}
		7146	if( strcmp(input_type, drag) == 0 ){
		7147	free(input_type);
		7148	return DRAG;
		7149	}
		7150	if( strcmp(input_type, userdraw) == 0 ){
		7151	free(input_type);
		7152	return USERDRAW;
		7153	}
		7154	if( strcmp(input_type, highlight) == 0 \|\| strcmp(input_type, style) == 0 ){
		7155	free(input_type);
		7156	return STYLE;
		7157	}
		7158	if( strcmp(input_type, fillcolor) == 0 ){
		7159	free(input_type);
		7160	return FILLCOLOR;
		7161	}
		7162	if( strcmp(input_type, strokecolor) == 0 ){
		7163	free(input_type);
		7164	return STROKECOLOR;
		7165	}
15111	schaersvoo	7166	if( strcmp(input_type, filled) == 0 ){
7614	schaersvoo	7167	free(input_type);
		7168	return FILLED;
		7169	}
		7170	if( strcmp(input_type, http) == 0 ){
		7171	free(input_type);
		7172	return HTTP;
		7173	}
		7174	if( strcmp(input_type, rays) == 0 ){
		7175	free(input_type);
		7176	return RAYS;
		7177	}
		7178	if( strcmp(input_type, lattice) == 0 ){
		7179	free(input_type);
		7180	return LATTICE;
		7181	}
		7182	if( strcmp(input_type, bgimage) == 0 ){
		7183	free(input_type);
		7184	return BGIMAGE;
		7185	}
		7186	if( strcmp(input_type, bgcolor) == 0 ){
		7187	free(input_type);
		7188	return BGCOLOR;
		7189	}
		7190	if( strcmp(input_type, backgroundimage) == 0 ){
		7191	free(input_type);
		7192	return BGIMAGE;
		7193	}
		7194	if( strcmp(input_type, text) == 0 ){
		7195	free(input_type);
		7196	return FLY_TEXT;
		7197	}
		7198	if( strcmp(input_type, textup) == 0 ){
		7199	free(input_type);
		7200	return FLY_TEXTUP;
		7201	}
		7202	if( strcmp(input_type, mouse) == 0 ){
		7203	free(input_type);
		7204	return MOUSE;
		7205	}
7991	schaersvoo	7206	if( strcmp(input_type, mousex) == 0 ){
		7207	free(input_type);
		7208	return MOUSEX;
		7209	}
		7210	if( strcmp(input_type, mousey) == 0 ){
		7211	free(input_type);
		7212	return MOUSEY;
		7213	}
8071	schaersvoo	7214	if( strcmp(input_type, mouse_degree) == 0 ){
		7215	free(input_type);
		7216	return MOUSE_DEGREE;
		7217	}
		7218	if( strcmp(input_type, mouse_display) == 0 ){
		7219	free(input_type);
		7220	return MOUSE_DISPLAY;
		7221	}
7614	schaersvoo	7222	if( strcmp(input_type, mouseprecision) == 0 ){
		7223	free(input_type);
		7224	return MOUSE_PRECISION;
		7225	}
		7226	if( strcmp(input_type, precision) == 0 ){
		7227	free(input_type);
		7228	return MOUSE_PRECISION;
		7229	}
		7230	if( strcmp(input_type, curve) == 0 ){
		7231	free(input_type);
		7232	return CURVE;
		7233	}
		7234	if( strcmp(input_type, dcurve) == 0 ){
7788	schaersvoo	7235	use_dashed = TRUE;
7614	schaersvoo	7236	free(input_type);
		7237	return CURVE;
		7238	}
		7239	if( strcmp(input_type, plot) == 0 ){
		7240	free(input_type);
		7241	return CURVE;
		7242	}
		7243	if( strcmp(input_type, dplot) == 0 ){
7788	schaersvoo	7244	use_dashed = TRUE;
7614	schaersvoo	7245	free(input_type);
		7246	return CURVE;
		7247	}
7788	schaersvoo	7248	if( strcmp(input_type, levelcurve) == 0 ){
		7249	free(input_type);
		7250	return LEVELCURVE;
		7251	}
7614	schaersvoo	7252	if( strcmp(input_type, plotsteps) == 0 ){
		7253	free(input_type);
		7254	return PLOTSTEPS;
		7255	}
		7256	if( strcmp(input_type, plotstep) == 0 ){
		7257	free(input_type);
		7258	return PLOTSTEPS;
		7259	}
		7260	if( strcmp(input_type, tsteps) == 0 ){
		7261	free(input_type);
		7262	return PLOTSTEPS;
		7263	}
		7264	if( strcmp(input_type, fontsize) == 0 ){
		7265	free(input_type);
		7266	return FONTSIZE;
		7267	}
		7268	if( strcmp(input_type, fontcolor) == 0 ){
		7269	free(input_type);
		7270	return FONTCOLOR;
		7271	}
		7272	if( strcmp(input_type, arrow2) == 0 ){
		7273	free(input_type);
		7274	return ARROW2;
		7275	}
		7276	if( strcmp(input_type, darrow) == 0 ){
		7277	free(input_type);
8071	schaersvoo	7278	use_dashed = TRUE;
7614	schaersvoo	7279	return ARROW;
		7280	}
		7281	if( strcmp(input_type, darrow2) == 0 ){
		7282	free(input_type);
		7283	use_dashed = TRUE;
		7284	return ARROW2;
		7285	}
8347	schaersvoo	7286	if( strcmp(input_type, arrows2) == 0 ){
		7287	free(input_type);
		7288	return ARROWS2;
		7289	}
9382	schaersvoo	7290	if( strcmp(input_type, arrows) == 0 \|\| strcmp(input_type, vectors) == 0 ){
8304	schaersvoo	7291	free(input_type);
		7292	return ARROWS;
		7293	}
9382	schaersvoo	7294	if( strcmp(input_type, arrow) == 0 \|\| strcmp(input_type, vector) == 0 ){
8304	schaersvoo	7295	free(input_type);
		7296	return ARROW;
		7297	}
7614	schaersvoo	7298	if( strcmp(input_type, zoom) == 0 ){
		7299	free(input_type);
		7300	return ZOOM;
		7301	}
		7302	if( strcmp(input_type, triangle) == 0 ){
		7303	free(input_type);
		7304	return TRIANGLE;
		7305	}
9306	schaersvoo	7306	if( strcmp(input_type, triangles) == 0 ){
		7307	free(input_type);
		7308	return TRIANGLES;
		7309	}
9374	schaersvoo	7310	if( strcmp(input_type, ftriangles) == 0 ){
		7311	free(input_type);
		7312	use_filled = TRUE;
		7313	return TRIANGLES;
		7314	}
7614	schaersvoo	7315	if( strcmp(input_type, ftriangle) == 0 ){
		7316	free(input_type);
		7317	use_filled = TRUE;
		7318	return TRIANGLE;
		7319	}
		7320	if( strcmp(input_type, input) == 0 ){
		7321	free(input_type);
		7322	return INPUT;
		7323	}
15111	schaersvoo	7324	if( strcmp(input_type, css) == 0 ){
7614	schaersvoo	7325	free(input_type);
15111	schaersvoo	7326	return CSS;
7614	schaersvoo	7327	}
		7328	if( strcmp(input_type, textarea) == 0 ){
		7329	free(input_type);
		7330	return TEXTAREA;
		7331	}
		7332	if( strcmp(input_type, mathml) == 0 ){
		7333	free(input_type);
		7334	return MATHML;
		7335	}
		7336	if( strcmp(input_type, html) == 0 ){
		7337	free(input_type);
15111	schaersvoo	7338	return HTML;
7614	schaersvoo	7339	}
		7340	if( strcmp(input_type, fontfamily) == 0 ){
		7341	free(input_type);
		7342	return FONTFAMILY;
		7343	}
18155	schaersvoo	7344	if( strcmp(input_type, polyline) == 0 \|\| strcmp(input_type, dpolyline) == 0 \|\| strcmp(input_type, path) == 0 \|\| strcmp(input_type, brokenline) == 0 ){
		7345	if(strcmp(input_type, dpolyline) == 0 ){use_dashed = TRUE;}
7614	schaersvoo	7346	free(input_type);
		7347	return POLYLINE;
		7348	}
8351	schaersvoo	7349	if( strcmp(input_type, lines) == 0 ){
		7350	free(input_type);
		7351	return LINES;
		7352	}
9374	schaersvoo	7353	if( strcmp(input_type, rects) == 0){
8363	schaersvoo	7354	free(input_type);
		7355	return RECTS;
		7356	}
9383	schaersvoo	7357	if( strcmp(input_type, frects) == 0 ){
8363	schaersvoo	7358	free(input_type);
9374	schaersvoo	7359	use_filled = TRUE;
8363	schaersvoo	7360	return RECTS;
		7361	}
7614	schaersvoo	7362	if( strcmp(input_type, rect) == 0 \|\| strcmp(input_type, rectangle) == 0 ){
		7363	free(input_type);
		7364	return RECT;
		7365	}
9374	schaersvoo	7366	if( strcmp(input_type, square) == 0 ){
		7367	free(input_type);
11991	schaersvoo	7368	return SQUARE;
9374	schaersvoo	7369	}
		7370	if( strcmp(input_type, fsquare) == 0 ){
		7371	free(input_type);
		7372	use_filled = TRUE;
		7373	return SQUARE;
		7374	}
		7375	if( strcmp(input_type, fsquares) == 0 ){
		7376	free(input_type);
		7377	use_filled = TRUE;
		7378	return RECTS;
		7379	}
8370	schaersvoo	7380	if( strcmp(input_type, roundrects) == 0 ){
		7381	free(input_type);
		7382	return ROUNDRECTS;
		7383	}
7614	schaersvoo	7384	if( strcmp(input_type, roundrect) == 0 \|\| strcmp(input_type, roundrectangle) == 0 ){
		7385	free(input_type);
		7386	return ROUNDRECT;
		7387	}
9374	schaersvoo	7388	if( strcmp(input_type, froundrects) == 0 ){
7614	schaersvoo	7389	free(input_type);
		7390	use_filled = TRUE;
9374	schaersvoo	7391	return ROUNDRECTS;
7614	schaersvoo	7392	}
9374	schaersvoo	7393	if( strcmp(input_type, froundrect) == 0 ){
7614	schaersvoo	7394	free(input_type);
		7395	use_filled = TRUE;
9374	schaersvoo	7396	return ROUNDRECT;
7614	schaersvoo	7397	}
		7398	if( strcmp(input_type, dline) == 0 ){
		7399	use_dashed = TRUE;
		7400	free(input_type);
		7401	return LINE;
		7402	}
7786	schaersvoo	7403	if( strcmp(input_type, dvline) == 0 ){
		7404	use_dashed = TRUE;
		7405	free(input_type);
		7406	return VLINE;
		7407	}
		7408	if( strcmp(input_type, dhline) == 0 ){
		7409	use_dashed = TRUE;
		7410	free(input_type);
		7411	return HLINE;
		7412	}
15111	schaersvoo	7413	if( strcmp(input_type, halflines) == 0 \|\| strcmp(input_type, demilines) == 0 ){
9386	schaersvoo	7414	free(input_type);
		7415	return HALFLINES;
		7416	}
15111	schaersvoo	7417	if( strcmp(input_type, halfline) == 0 \|\| strcmp(input_type, demiline) == 0 ){
9386	schaersvoo	7418	free(input_type);
		7419	return HALFLINE;
		7420	}
7614	schaersvoo	7421	if( strcmp(input_type, frect) == 0 \|\| strcmp(input_type, frectangle) == 0 ){
		7422	use_filled = TRUE;
		7423	free(input_type);
		7424	return RECT;
		7425	}
8304	schaersvoo	7426	if( strcmp(input_type, circles) == 0 ){
		7427	free(input_type);
		7428	return CIRCLES;
		7429	}
7614	schaersvoo	7430	if( strcmp(input_type, fcircle) == 0 \|\| strcmp(input_type, disk) == 0 ){
		7431	use_filled = TRUE;
		7432	free(input_type);
		7433	return CIRCLE;
		7434	}
9374	schaersvoo	7435	if( strcmp(input_type, fcircles) == 0 \|\| strcmp(input_type, disks) == 0 ){
		7436	use_filled = TRUE;
		7437	free(input_type);
		7438	return CIRCLES;
		7439	}
7614	schaersvoo	7440	if( strcmp(input_type, circle) == 0 ){
		7441	free(input_type);
		7442	return CIRCLE;
		7443	}
		7444	if( strcmp(input_type, point) == 0 ){
		7445	free(input_type);
		7446	return POINT;
		7447	}
		7448	if( strcmp(input_type, points) == 0 ){
		7449	free(input_type);
		7450	return POINTS;
		7451	}
9374	schaersvoo	7452	if( strcmp(input_type, filledarc) == 0 \|\| strcmp(input_type, farc) == 0 ){
7614	schaersvoo	7453	use_filled = TRUE;
		7454	free(input_type);
		7455	return ARC;
		7456	}
		7457	if( strcmp(input_type, arc) == 0 ){
		7458	free(input_type);
		7459	return ARC;
		7460	}
		7461	if( strcmp(input_type, poly) == 0 \|\| strcmp(input_type, polygon) == 0 ){
		7462	free(input_type);
		7463	return POLY;
		7464	}
		7465	if( strcmp(input_type, fpoly) == 0 \|\| strcmp(input_type, filledpoly) == 0 \|\| strcmp(input_type,filledpolygon) == 0 \|\| strcmp(input_type,fpolygon) == 0 ){
		7466	use_filled = TRUE;
		7467	free(input_type);
		7468	return POLY;
		7469	}
		7470	if( strcmp(input_type, ellipse) == 0){
		7471	free(input_type);
		7472	return ELLIPSE;
		7473	}
12110	schaersvoo	7474	if( strcmp(input_type, ellipses) == 0){
		7475	free(input_type);
		7476	return ELLIPSES;
		7477	}
7614	schaersvoo	7478	if( strcmp(input_type, string) == 0 ){
		7479	free(input_type);
		7480	return STRING;
		7481	}
		7482	if( strcmp(input_type, stringup) == 0 ){
		7483	free(input_type);
		7484	return STRINGUP;
		7485	}
9385	schaersvoo	7486	if( strcmp(input_type, opacity) == 0 \|\| strcmp(input_type, transparent) == 0 ){
7614	schaersvoo	7487	free(input_type);
		7488	return OPACITY;
		7489	}
		7490	if( strcmp(input_type, comment) == 0){
		7491	free(input_type);
		7492	return COMMENT;
		7493	}
		7494	if( strcmp(input_type, fellipse) == 0){
		7495	free(input_type);
		7496	use_filled = TRUE;
		7497	return ELLIPSE;
8224	bpr	7498	}
9386	schaersvoo	7499	if( strcmp(input_type, clearbutton) == 0 \|\| strcmp(input_type, erase) == 0 \|\| strcmp(input_type, delete) == 0){
7614	schaersvoo	7500	free(input_type);
8146	schaersvoo	7501	return CLEARBUTTON;
7614	schaersvoo	7502	}
15111	schaersvoo	7503	if( strcmp(input_type, translation) == 0 \|\| strcmp(input_type, translate) == 0 ){
7614	schaersvoo	7504	free(input_type);
		7505	return TRANSLATION;
		7506	}
15716	schaersvoo	7507	if( strcmp(input_type, kill) == 0 ){
		7508	free(input_type);
		7509	return KILL;
		7510	}
7614	schaersvoo	7511	if( strcmp(input_type, killtranslation) == 0 \|\| strcmp(input_type, killtranslate) == 0){
		7512	free(input_type);
		7513	return KILLTRANSLATION;
		7514	}
		7515	if( strcmp(input_type, rotate) == 0){
		7516	free(input_type);
		7517	return ROTATE;
		7518	}
9907	schaersvoo	7519	if( strcmp(input_type, killrotate) == 0){
		7520	free(input_type);
		7521	return KILLROTATE;
		7522	}
		7523	if( strcmp(input_type, rotationcenter) == 0){
		7524	free(input_type);
		7525	return ROTATION_CENTER;
		7526	}
7785	schaersvoo	7527	if( strcmp(input_type, affine) == 0){
		7528	free(input_type);
		7529	return AFFINE;
		7530	}
15111	schaersvoo	7531	if( strcmp(input_type, linear) == 0){
		7532	free(input_type);
		7533	return LINEAR;
		7534	}
7785	schaersvoo	7535	if( strcmp(input_type, killaffine) == 0){
		7536	free(input_type);
		7537	return KILLAFFINE;
		7538	}
15111	schaersvoo	7539	if( strcmp(input_type, killlinear) == 0 \|\| strcmp(input_type, killinear) == 0 ){
		7540	free(input_type);
		7541	return KILLLINEAR;
		7542	}
7614	schaersvoo	7543	if( strcmp(input_type, slider) == 0 ){
		7544	free(input_type);
		7545	return SLIDER;
		7546	}
16872	schaersvoo	7547	if( strcmp(input_type, killslider) == 0 \|\| strcmp(input_type, killgroup) == 0 ){
8101	schaersvoo	7548	free(input_type);
		7549	return KILLSLIDER;
		7550	}
7614	schaersvoo	7551	if( strcmp(input_type, copy) == 0 ){
		7552	free(input_type);
		7553	return COPY;
		7554	}
		7555	if( strcmp(input_type, copyresized) == 0 ){
		7556	free(input_type);
		7557	return COPYRESIZED;
		7558	}
		7559	if( strcmp(input_type, xlogscale) == 0 ){
		7560	free(input_type);
		7561	return XLOGSCALE;
		7562	}
		7563	if( strcmp(input_type, ylogscale) == 0 ){
		7564	free(input_type);
		7565	return YLOGSCALE;
		7566	}
		7567	if( strcmp(input_type, xylogscale) == 0 ){
		7568	free(input_type);
		7569	return XYLOGSCALE;
		7570	}
		7571	if( strcmp(input_type, ylogscale) == 0 ){
		7572	free(input_type);
		7573	return YLOGSCALE;
		7574	}
7735	schaersvoo	7575	if( strcmp(input_type, xlogbase) == 0 ){
7614	schaersvoo	7576	free(input_type);
7735	schaersvoo	7577	return XLOGBASE;
7614	schaersvoo	7578	}
7735	schaersvoo	7579	if( strcmp(input_type, ylogbase) == 0 ){
		7580	free(input_type);
		7581	return YLOGBASE;
		7582	}
7614	schaersvoo	7583	if( strcmp(input_type, intooltip) == 0 ){
		7584	free(input_type);
		7585	return INTOOLTIP;
		7586	}
9329	schaersvoo	7587	if( strcmp(input_type, popup) == 0 ){
		7588	free(input_type);
		7589	return POPUP;
		7590	}
7614	schaersvoo	7591	if( strcmp(input_type,video) == 0 ){
		7592	free(input_type);
		7593	return VIDEO;
		7594	}
15111	schaersvoo	7595	if( strcmp(input_type,math) == 0 \|\| strcmp(input_type,latex) == 0 \|\| strcmp(input_type,katex) == 0 ){
14225	schaersvoo	7596	free(input_type);
		7597	return LATEX;
		7598	}
11772	schaersvoo	7599	if( strcmp(input_type,fillall) == 0 ){
		7600	free(input_type);
		7601	return FILLALL;
		7602	}
7614	schaersvoo	7603	if( strcmp(input_type,floodfill) == 0 \|\| strcmp(input_type,fill) == 0 ){
		7604	free(input_type);
		7605	return FLOODFILL;
8224	bpr	7606	}
7614	schaersvoo	7607	if( strcmp(input_type,filltoborder) == 0 ){
		7608	free(input_type);
		7609	return FILLTOBORDER;
8224	bpr	7610	}
14038	schaersvoo	7611	if( strcmp(input_type, curvedarrow2) == 0 ){
		7612	free(input_type);
		7613	return CURVEDARROW2;
		7614	}
		7615	if( strcmp(input_type, curvedarrow) == 0 ){
		7616	free(input_type);
		7617	return CURVEDARROW;
		7618	}
		7619	if( strcmp(input_type, curvedarrows) == 0 ){
		7620	free(input_type);
		7621	return CURVEDARROWS;
		7622	}
		7623	if( strcmp(input_type, curvedarrows2) == 0 ){
		7624	free(input_type);
		7625	return CURVEDARROWS2;
		7626	}
7614	schaersvoo	7627	if( strcmp(input_type, replyformat) == 0 ){
		7628	free(input_type);
		7629	return REPLYFORMAT;
		7630	}
		7631	if( strcmp(input_type, pixelsize) == 0 ){
		7632	free(input_type);
		7633	return PIXELSIZE;
		7634	}
		7635	if( strcmp(input_type, setpixel) == 0 ){
		7636	free(input_type);
		7637	return SETPIXEL;
		7638	}
		7639	if( strcmp(input_type, pixels) == 0 ){
		7640	free(input_type);
		7641	return PIXELS;
		7642	}
		7643	if( strcmp(input_type, xaxis) == 0 \|\| strcmp(input_type, xaxistext) == 0 ){
		7644	free(input_type);
		7645	return X_AXIS_STRINGS;
		7646	}
9341	schaersvoo	7647	if( strcmp(input_type, xaxisup) == 0 \|\| strcmp(input_type, xaxistextup) == 0 ){
		7648	free(input_type);
		7649	return X_AXIS_STRINGS_UP;
		7650	}
7614	schaersvoo	7651	if( strcmp(input_type, yaxis) == 0 \|\| strcmp(input_type, yaxistext) == 0 ){
		7652	free(input_type);
		7653	return Y_AXIS_STRINGS;
		7654	}
15111	schaersvoo	7655	if( strcmp(input_type, legend) == 0 ){
7614	schaersvoo	7656	free(input_type);
		7657	return LEGEND;
		7658	}
15111	schaersvoo	7659	if( strcmp(input_type, legendcolors) == 0 ){
7614	schaersvoo	7660	free(input_type);
		7661	return LEGENDCOLORS;
		7662	}
15111	schaersvoo	7663	if( strcmp(input_type, xlabel) == 0 ){
7614	schaersvoo	7664	free(input_type);
		7665	return XLABEL;
		7666	}
15111	schaersvoo	7667	if( strcmp(input_type, ylabel) == 0 ){
7614	schaersvoo	7668	free(input_type);
		7669	return YLABEL;
		7670	}
15111	schaersvoo	7671	if( strcmp(input_type, bezier) == 0 ){
8370	schaersvoo	7672	free(input_type);
		7673	return BEZIER;
		7674	}
15111	schaersvoo	7675	if( strcmp(input_type, animate) == 0 ){
7614	schaersvoo	7676	free(input_type);
		7677	return ANIMATE;
		7678	}
9354	schaersvoo	7679	/* these are bitmap related flydraw commands...must be removed. eventually */
7614	schaersvoo	7680	if( strcmp(input_type, transparent) == 0 ){
		7681	free(input_type);
		7682	return TRANSPARENT;
		7683	}
7877	schaersvoo	7684	if( strcmp(input_type, status) == 0 \|\| strcmp(input_type, nostatus) == 0 ){
7614	schaersvoo	7685	free(input_type);
		7686	return STATUS;
		7687	}
7784	schaersvoo	7688	if( strcmp(input_type, xsnaptogrid) == 0 ){
		7689	free(input_type);
		7690	return XSNAPTOGRID;
		7691	}
		7692	if( strcmp(input_type, ysnaptogrid) == 0 ){
		7693	free(input_type);
		7694	return YSNAPTOGRID;
		7695	}
8379	schaersvoo	7696	if( strcmp(input_type, snaptogrid) == 0 ){
		7697	free(input_type);
		7698	return SNAPTOGRID;
		7699	}
		7700	if( strcmp(input_type, snaptopoints) == 0 ){
		7701	free(input_type);
		7702	return SNAPTOPOINTS;
		7703	}
9213	schaersvoo	7704	if( strcmp(input_type, snaptofunction) == 0 \|\| strcmp(input_type, snaptofun) == 0 ){
		7705	free(input_type);
		7706	return SNAPTOFUNCTION;
		7707	}
7652	schaersvoo	7708	if( strcmp(input_type, userinput_xy) == 0 ){
7614	schaersvoo	7709	free(input_type);
7652	schaersvoo	7710	return USERINPUT_XY;
		7711	}
8193	schaersvoo	7712	if( strcmp(input_type, userinput_function) == 0 ){
		7713	free(input_type);
		7714	return USERINPUT_FUNCTION;
		7715	}
8222	schaersvoo	7716	if( strcmp(input_type, userinput) == 0 ){
		7717	free(input_type);
		7718	return USERINPUT;
		7719	}
8105	schaersvoo	7720	if( strcmp(input_type, angle) == 0 ){
7996	schaersvoo	7721	free(input_type);
8105	schaersvoo	7722	return ANGLE;
		7723	}
15315	bpr	7724	if( strcmp(input_type, functionlabel) == 0 \|\| strcmp(input_type, functionlabels) == 0 ){
8244	schaersvoo	7725	free(input_type);
8297	schaersvoo	7726	return FUNCTION_LABEL;
		7727	}
16872	schaersvoo	7728	if( strcmp(input_type, group) == 0 ){
8297	schaersvoo	7729	free(input_type);
16872	schaersvoo	7730	return GROUP;
9213	schaersvoo	7731	}
		7732	if( strcmp(input_type, multidraw) == 0 ){
		7733	free(input_type);
		7734	return MULTIDRAW;
		7735	}
		7736	if( strcmp(input_type, multistrokeopacity) == 0 ){
		7737	free(input_type);
		7738	return MULTISTROKEOPACITY;
		7739	}
		7740	if( strcmp(input_type, multifillopacity) == 0 ){
		7741	free(input_type);
		7742	return MULTIFILLOPACITY;
		7743	}
15111	schaersvoo	7744	if( strcmp(input_type, multilinewidth) == 0 \|\| strcmp(input_type, linewidths) == 0 ){
9213	schaersvoo	7745	free(input_type);
		7746	return MULTILINEWIDTH;
		7747	}
15111	schaersvoo	7748	if( strcmp(input_type, multistrokecolors) == 0 \|\| strcmp(input_type,multicolors) == 0 \|\| strcmp(input_type,strokecolors) == 0 \|\| strcmp(input_type,colors) == 0 ){
9213	schaersvoo	7749	free(input_type);
		7750	return MULTISTROKECOLORS;
		7751	}
		7752	if( strcmp(input_type, multifill) == 0 ){
		7753	free(input_type);
		7754	return MULTIFILL;
		7755	}
15111	schaersvoo	7756	if( strcmp(input_type, multifillcolors) == 0 \|\| strcmp(input_type, fillcolors) == 0 ){
9213	schaersvoo	7757	free(input_type);
		7758	return MULTIFILLCOLORS;
		7759	}
		7760	if( strcmp(input_type, multilabel) == 0 ){
		7761	free(input_type);
		7762	return MULTILABEL;
		7763	}
		7764	if( strcmp(input_type, multidash) == 0 ){
		7765	free(input_type);
		7766	return MULTIDASH;
		7767	}
14038	schaersvoo	7768	if( strcmp(input_type, multisnaptogrid) == 0 \|\| strcmp(input_type, multisnap) == 0 ){
9213	schaersvoo	7769	free(input_type);
		7770	return MULTISNAPTOGRID;
		7771	}
15111	schaersvoo	7772	if( strcmp(input_type, multiuserinput) == 0 \|\| strcmp(input_type, multiinput) == 0 ){
9213	schaersvoo	7773	free(input_type);
		7774	return MULTIUSERINPUT;
		7775	}
9386	schaersvoo	7776	if( strcmp(input_type, parallel) == 0 ){
		7777	free(input_type);
		7778	return PARALLEL;
		7779	}
9289	schaersvoo	7780	if( strcmp(input_type, protractor) == 0 ){
		7781	free(input_type);
		7782	return PROTRACTOR;
		7783	}
		7784	if( strcmp(input_type, ruler) == 0 ){
		7785	free(input_type);
		7786	return RULER;
		7787	}
9386	schaersvoo	7788	if( strcmp(input_type, cursor) == 0 \|\| strcmp(input_type, pointer) == 0 ){
9213	schaersvoo	7789	free(input_type);
9386	schaersvoo	7790	return CURSOR;
		7791	}
		7792	if( strcmp(input_type, sgraph) == 0 ){
		7793	free(input_type);
		7794	return SGRAPH;
		7795	}
		7796	if( strcmp(input_type, jsmath) == 0 ){
		7797	free(input_type);
		7798	return JSMATH;
		7799	}
		7800	if( strcmp(input_type, trace_jscurve) == 0 ){
		7801	free(input_type);
		7802	return TRACE_JSCURVE;
		7803	}
		7804	if( strcmp(input_type, jscurve) == 0 \|\| strcmp(input_type, jsplot) == 0 ){
		7805	free(input_type);
		7806	return JSCURVE;
		7807	}
		7808	if( strcmp(input_type, centerstring) == 0 \|\| strcmp(input_type, title) == 0 ){
		7809	free(input_type);
		7810	return CENTERSTRING;
		7811	}
		7812	if( strcmp(input_type, setlimits) == 0 ){
		7813	free(input_type);
		7814	return SETLIMITS;
		7815	}
		7816	if( strcmp(input_type, xunit) == 0 ){
		7817	free(input_type);
		7818	return XUNIT;
		7819	}
		7820	if( strcmp(input_type, yunit) == 0 ){
		7821	free(input_type);
		7822	return YUNIT;
		7823	}
		7824	if( strcmp(input_type, fill) == 0 ){
		7825	free(input_type);
		7826	return FLOODFILL;
		7827	}
		7828	if( strcmp(input_type, end) == 0){
		7829	free(input_type);
		7830	return END;
		7831	}
		7832	if( strcmp(input_type, blink) == 0 ){
		7833	free(input_type);
		7834	return BLINK;
		7835	}
		7836	if( strcmp(input_type, audio) == 0 ){
		7837	free(input_type);
		7838	return AUDIO;
		7839	}
		7840	if( strcmp(input_type, audioobject) == 0 ){
		7841	free(input_type);
		7842	return AUDIOOBJECT;
		7843	}
		7844	if( strcmp(input_type, patternfill) == 0 ){
		7845	free(input_type);
		7846	return PATTERNFILL;
		7847	}
		7848	if( strcmp(input_type, hatchfill) == 0 ){
		7849	free(input_type);
		7850	return HATCHFILL;
		7851	}
15111	schaersvoo	7852	if( strcmp(input_type, diafill) == 0 \|\| strcmp(input_type, diamondfill) == 0 ){
9386	schaersvoo	7853	free(input_type);
		7854	return DIAMONDFILL;
		7855	}
		7856	if( strcmp(input_type, dotfill) == 0 ){
		7857	free(input_type);
		7858	return DOTFILL;
		7859	}
11830	schaersvoo	7860	if( strcmp(input_type, textfill) == 0 ){
		7861	free(input_type);
		7862	return TEXTFILL;
		7863	}
9386	schaersvoo	7864	if( strcmp(input_type, gridfill) == 0 ){
		7865	free(input_type);
		7866	return GRIDFILL;
		7867	}
		7868	if( strcmp(input_type, imagefill) == 0 ){
		7869	free(input_type);
		7870	return IMAGEFILL;
		7871	}
		7872	if( strcmp(input_type, clicktile_colors) == 0 ){
		7873	free(input_type);
		7874	return CLICKTILE_COLORS;
		7875	}
		7876	if( strcmp(input_type, clicktile) == 0 ){
		7877	free(input_type);
		7878	return CLICKTILE;
		7879	}
15111	schaersvoo	7880	if( strcmp(input_type, piechart) == 0 ){
9386	schaersvoo	7881	free(input_type);
		7882	return PIECHART;
		7883	}
15111	schaersvoo	7884	if( strcmp(input_type, boxplot) == 0 ){
9433	schaersvoo	7885	free(input_type);
		7886	return BOXPLOT;
		7887	}
15111	schaersvoo	7888	if( strcmp(input_type, boxplotdata) == 0 ){
9433	schaersvoo	7889	free(input_type);
9465	schaersvoo	7890	return BOXPLOTDATA;
9433	schaersvoo	7891	}
15111	schaersvoo	7892	if( strcmp(input_type, userboxplot) == 0 ){
9465	schaersvoo	7893	free(input_type);
		7894	return USERBOXPLOT;
		7895	}
15111	schaersvoo	7896	if( strcmp(input_type, userboxplotdata) == 0 ){
9465	schaersvoo	7897	free(input_type);
		7898	return USERBOXPLOT;
		7899	}
15111	schaersvoo	7900	if( strcmp(input_type, barchart) == 0 ){
9386	schaersvoo	7901	free(input_type);
		7902	return BARCHART;
		7903	}
15111	schaersvoo	7904	if( strcmp(input_type, linegraph) == 0 ){
9386	schaersvoo	7905	free(input_type);
		7906	return LINEGRAPH;
		7907	}
15111	schaersvoo	7908	if( strcmp(input_type, clock) == 0 ){
9386	schaersvoo	7909	free(input_type);
		7910	return CLOCK;
		7911	}
15111	schaersvoo	7912	if( strcmp(input_type, yerrorbars) == 0 ){
9386	schaersvoo	7913	free(input_type);
9427	schaersvoo	7914	return YERRORBARS;
		7915	}
15111	schaersvoo	7916	if( strcmp(input_type, xerrorbars) == 0 ){
9427	schaersvoo	7917	free(input_type);
		7918	return XERRORBARS;
		7919	}
15111	schaersvoo	7920	if( strcmp(input_type, canvastype) == 0 ){
9427	schaersvoo	7921	free(input_type);
11006	schaersvoo	7922	return CANVASTYPE;
		7923	}
15111	schaersvoo	7924	if( strcmp(input_type, noyaxis) == 0 ){
11006	schaersvoo	7925	free(input_type);
11044	schaersvoo	7926	return NOYAXIS;
		7927	}
15111	schaersvoo	7928	if( strcmp(input_type, noxaxis) == 0 ){
11044	schaersvoo	7929	free(input_type);
		7930	return NOXAXIS;
		7931	}
15111	schaersvoo	7932	if( strcmp(input_type, colorpalette) == 0 ){
11044	schaersvoo	7933	free(input_type);
11767	schaersvoo	7934	return COLORPALETTE;
		7935	}
15111	schaersvoo	7936	if( strcmp(input_type, imagepalette) == 0 ){
14038	schaersvoo	7937	free(input_type);
		7938	return IMAGEPALETTE;
		7939	}
15111	schaersvoo	7940	if( strcmp(input_type, resetoffset) == 0 ){
11767	schaersvoo	7941	free(input_type);
11802	schaersvoo	7942	return RESETOFFSET;
		7943	}
15111	schaersvoo	7944	if( strcmp(input_type, xyoffset) == 0 ){
11802	schaersvoo	7945	free(input_type);
		7946	return XYOFFSET;
		7947	}
12063	schaersvoo	7948	if( strcmp(input_type, centered) == 0 ){
11802	schaersvoo	7949	free(input_type);
12063	schaersvoo	7950	return CENTERED;
11802	schaersvoo	7951	}
15111	schaersvoo	7952	if( strcmp(input_type, yoffset) == 0 ){
11802	schaersvoo	7953	free(input_type);
11811	schaersvoo	7954	return YOFFSET;
		7955	}
15111	schaersvoo	7956	if( strcmp(input_type, xoffset) == 0 ){
12063	schaersvoo	7957	free(input_type);
		7958	return XOFFSET;
		7959	}
15601	schaersvoo	7960	if( strcmp(input_type, fillpattern) == 0 \|\| strcmp(input_type, settile) == 0 ){
11811	schaersvoo	7961	free(input_type);
11837	schaersvoo	7962	return FILLPATTERN;
		7963	}
11890	schaersvoo	7964	if( strcmp(input_type, numberline) == 0 ){
11837	schaersvoo	7965	free(input_type);
11890	schaersvoo	7966	return NUMBERLINE;
		7967	}
15111	schaersvoo	7968	if( strcmp(input_type, obabel) == 0 ){
		7969	free(input_type);
		7970	return OBABEL;
		7971	}
		7972	if( strcmp(input_type, chemtex) == 0 ){
		7973	free(input_type);
		7974	return CHEMTEX;
		7975	}
		7976	if( strcmp(input_type, noreset) == 0 \|\| strcmp(input_type, killreset) == 0 ){
		7977	return NORESET;
		7978	}
14393	schaersvoo	7979	if( strcmp(input_type, duplicates) == 0 \|\| strcmp(input_type, allowdups) == 0 ){
11890	schaersvoo	7980	free(input_type);
14393	schaersvoo	7981	return ALLOW_DUPLICATES;
		7982	}
15690	schaersvoo	7983	if( strcmp(input_type, arrowarc) == 0 \|\| strcmp(input_type, arcarrow) == 0 ){
14393	schaersvoo	7984	free(input_type);
15690	schaersvoo	7985	return ARCARROW;
		7986	}
		7987	free(input_type);
7614	schaersvoo	7988	ungetc(c,infile);
		7989	return 0;
		7990	}
15611	schaersvoo	7991
15613	schaersvoo	7992
		7993

Subversion Repositories wimsdev

(root)/trunk/wims/src/Misc/canvasdraw/canvasdraw.c – Rev 18157