Subversion Repositories wimsdev

# Canvasdraw changes log

# Canvasdraw changes log

## TODO :

## TODO :

- sort out the global/local variable mess...and reorganize headerfile

- sort out the global/local variable mess...and reorganize headerfile

	 : zooming and grid: scaling needs to be more adaptive! (use constant amount of grid lines)

	 : zooming and grid: scaling needs to be more adaptive! (use constant amount of grid lines)

## 2023

## 2023

* 21/2/2023: canvasmultidraw now place object with relative coords (%) instead of absolute (px)

* 21/2/2023: canvasmultidraw now place object with relative coords (%) instead of absolute (px)

* 13/1/2023: corrected flaw in external images 'copy & drag/drop'

* 13/1/2023: corrected flaw in external images 'copy & drag/drop'

## 2022

## 2022

* 28/8/2022: added command "newrange xmin,xmax,ymin,ymax" see https://wimsedu.info/?topic=dessiner-des-portions-de-fonctions-sur-un-meme-graphe

* 28/8/2022: added command "newrange xmin,xmax,ymin,ymax" see https://wimsedu.info/?topic=dessiner-des-portions-de-fonctions-sur-un-meme-graphe

* 01/8/2022: getMouse(),latest improvements related to 'reponsiveness' will fatally lockup browsers in the pixel-by-pixel filling...at least in userdraw clickfill

* 01/8/2022: getMouse(),latest improvements related to 'reponsiveness' will fatally lockup browsers in the pixel-by-pixel filling...at least in userdraw clickfill

* 19/7/2022: checked and corrected 'dashed' objects like arc,arrowarc,ellipse...

* 19/7/2022: checked and corrected 'dashed' objects like arc,arrowarc,ellipse...

* 06/7/2022: clearbutton preserves div's with '<' && '/>' and objects placed with `placed_image_on_canvas(id)` e.g. with `id = placed*`

* 06/7/2022: clearbutton preserves div's with '<' && '/>' and objects placed with `placed_image_on_canvas(id)` e.g. with `id = placed*`

* 05/7/2022: corrected flaw in 'clearbutton' https://wimsedu.info/?topic=geometrie-interactive-avec-canvasdraw

* 05/7/2022: corrected flaw in 'clearbutton' https://wimsedu.info/?topic=geometrie-interactive-avec-canvasdraw

* 05/7/2022: command 'group' :

* 05/7/2022: command 'group' :

	- still some issues with direct clicks on group members (NaN due to competing mouselisteners)

	- still some issues with direct clicks on group members (NaN due to competing mouselisteners)

	- removed 'debug newlines'

	- removed 'debug newlines'

* 19/6/2022: added function plot to multidraw (https://wimsedu.info/?topic=userinput-function)

* 19/6/2022: added function plot to multidraw (https://wimsedu.info/?topic=userinput-function)

	command 'multidraw functions' will -for now- give just 2 inputfields... *TODO*: make configurable, so implement commands like 'multidraw functions5')

	command 'multidraw functions' will -for now- give just 2 inputfields... *TODO*: make configurable, so implement commands like 'multidraw functions5')

	for multiple function input fields, use multiple keywords 'function', e.g. something like:

	for multiple function input fields, use multiple keywords 'function', e.g. something like:

	multidraw text,line,function,function,function,points

	multidraw text,line,function,function,function,points

* 27/5/2022: added subsup to userdraw and multidraw 'text' (which is always 'centered' e.g use_offset=4)

* 27/5/2022: added subsup to userdraw and multidraw 'text' (which is always 'centered' e.g use_offset=4)

* 23/5/2022: overriding fontfamily and use Helvetica as font for _sub ^sup  strings: all inline numbers are in script-size (80% eg the same as strings+numbers for sub/sup)

* 23/5/2022: overriding fontfamily and use Helvetica as font for _sub ^sup  strings: all inline numbers are in script-size (80% eg the same as strings+numbers for sub/sup)

* 20/5/2022: added a sub / sup imitation to the canvas 'string' command family

* 20/5/2022: added a sub / sup imitation to the canvas 'string' command family

		size 400,400

		size 400,400

		xrange -6,6

		xrange -6,6

		yrange -6,6

		yrange -6,6

* 2/4/2022: added timeout fix for centering issue in case of MathJaX (draw_xml())

* 2/4/2022: added timeout fix for centering issue in case of MathJaX (draw_xml())

## 2021

## 2021

* 14/4/2021: added flydraw command 'range xmin,xmax,ymin,ymax'

* 14/4/2021: added flydraw command 'range xmin,xmax,ymin,ymax'

* 6/4/2021: corrected 'text objects' (from cmd's text/string) were not added to 'noreset', e.g. keyword 'noreset' was ignored...

* 6/4/2021: corrected 'text objects' (from cmd's text/string) were not added to 'noreset', e.g. keyword 'noreset' was ignored...

* 4/4/2021: corrected use of precompiler directive "KATEX_INSTALLED" (was not working...)

* 4/4/2021: corrected use of precompiler directive "KATEX_INSTALLED" (was not working...)

* 12/3/2021: add "version 0.5" to canvasdraw include file

* 12/3/2021: add "version 0.5" to canvasdraw include file

* 23/2/2021:

* 23/2/2021:

added generic command 'kill argument'

added generic command 'kill argument'

work in progress

work in progress

resetting dashing for the arrow head (head was also dashed...)

resetting dashing for the arrow head (head was also dashed...)

see https://wimsedu.info/?topic=dashed-arrows-not-dashed-in-canvasdraw

see https://wimsedu.info/?topic=dashed-arrows-not-dashed-in-canvasdraw

* 2/2/2021:

* 2/2/2021:

added command 'arcarrow|arrowarc', left,right,left/right

added command 'arcarrow|arrowarc', left,right,left/right

added commands 'arc','angle','arcarrow' to onclick and drag&drop

added commands 'arc','angle','arcarrow' to onclick and drag&drop

corrected syntax issue in canvasmultidraw.c signalled by Opera Presto : 'forbidden function user_drawstop(evt) declaration in statement'*/

corrected syntax issue in canvasmultidraw.c signalled by Opera Presto : 'forbidden function user_drawstop(evt) declaration in statement'*/

can not correct centering in case of MathJaX, in commands like

can not correct centering in case of MathJaX, in commands like

```

```

 function read_canvas(){

 function read_canvas(){

   var fun = eval("read_canvas"+canvas_scripts[0]);

   var fun = eval("read_canvas"+canvas_scripts[0]);

   if( typeof fun === 'function'){ return fun();};

   if( typeof fun === 'function'){ return fun();};

 };

 };

 function read_dragdrop(){

 function read_dragdrop(){

   if(typeof fun === 'function'){return fun();};

   if(typeof fun === 'function'){return fun();};

 };

 };

</script>

</script>

<br/>

<br/>

<span id="m2" onclick="javascript:place_image_on_canvas(this.id)" >\m2</span>

<span id="m2" onclick="javascript:place_image_on_canvas(this.id)" >\m2</span>

<span id="m3" onclick="javascript:place_image_on_canvas(this.id)" >\m3</span>

<span id="m3" onclick="javascript:place_image_on_canvas(this.id)" >\m3</span>

<span id="m4" onclick="javascript:place_image_on_canvas(this.id)" >\m4</span>

<span id="m4" onclick="javascript:place_image_on_canvas(this.id)" >\m4</span>

\canvasdraw{400,400}{

\canvasdraw{400,400}{

grid 1,1,grey

grid 1,1,grey

noreset

noreset

# use keyword 'noreset' to avoid using keyword 'centered' before every addition of objects !

# use keyword 'noreset' to avoid using keyword 'centered' before every addition of objects !

centered

centered

fontfamily Bold Italic 42pt Courier

fontfamily Bold Italic 42pt Courier

<td><img src="gifs/de.gif" onclick='javascript:place_image_on_canvas(this.id);' id="de" /></td>

<td><img src="gifs/de.gif" onclick='javascript:place_image_on_canvas(this.id);' id="de" /></td>

</tr>

</tr>

</table>

</table>

   <input type="button" onclick="alert(read_canvas());" value="read_canvas()" />

   <input type="button" onclick="alert(read_canvas());" value="read_canvas()" />

   <input type="button" onclick="alert(read_dragdrop());" value="read_dragdrop()" />

   <input type="button" onclick="alert(read_dragdrop());" value="read_dragdrop()" />

```

```

* 15/1/2021:

* 15/1/2021:

corrected long standing flaw regarding "centered" on external stuff...tested: bitmap,svg,TeX [on KaTeX]

corrected long standing flaw regarding "centered" on external stuff...tested: bitmap,svg,TeX [on KaTeX]

corrected 'onclick' for 'draw_xml()'

corrected 'onclick' for 'draw_xml()'

only on KaTeX enabled wims, a slider title may use TeX produced by command "mathmlmath"

only on KaTeX enabled wims, a slider title may use TeX produced by command "mathmlmath"

* 13/1/2021:

* 13/1/2021:

slider title may use TeX produced by command "mathmlmath"

slider title may use TeX produced by command "mathmlmath"

latex -5,0,\C

latex -5,0,\C

killslider)

killslider)

}

}

\statement{

\statement{

canvas = \canvas

canvas = \canvas

```

```

* 8/1/2021:

* 8/1/2021:

added affine transformation to Fly text commmand analogue

added affine transformation to Fly text commmand analogue

curve green,2*t,sin(2*pi*t)

curve green,2*t,sin(2*pi*t)

```

```

* 22/12/2020:

* 22/12/2020:

command "fillpattern image_url" was gone fishing! `get_image_from_url()` needs to be called after function definition..

command "fillpattern image_url" was gone fishing! `get_image_from_url()` needs to be called after function definition..

	- added 'affine' to curve evaluation

	- added 'affine' to curve evaluation

	```

	```

	size 220,220

	size 220,220

	xrange -5,5

	xrange -5,5

	curve blue,sin(x)

	curve blue,sin(x)

	affine 1,-0.2,-0.6,1,0,2

	affine 1,-0.2,-0.6,1,0,2

	curve red,sin(x)

	curve red,sin(x)

	```

	```

	- added `safe_eval()` to userinput (using inputfields)

	- added `safe_eval()` to userinput (using inputfields)

* 8/7/2020:

* 8/7/2020:

	- command `input x,y,size,readonly,value` gave canvaserror when 'value' was ommitted or a 'space'

	- command `input x,y,size,readonly,value` gave canvaserror when 'value' was ommitted or a 'space'

	- corrected bug [https://wimsedu.info/?topic=bug-canvasdraw-et-ou-drawinput]()

	- corrected bug [https://wimsedu.info/?topic=bug-canvasdraw-et-ou-drawinput]()

		size 400,400

		size 400,400

		xrange -6,6

		xrange -6,6

		yrange -6,6

		yrange -6,6

		fontsize 40

		fontsize 40

		linewidth 1

		linewidth 1

		centered

		centered

		html 0,0,<img src="modules/U2/geometry/oefrosoni.it/images/273x273/fig4.png"  />

		html 0,0,<img src="modules/U2/geometry/oefrosoni.it/images/273x273/fig4.png"  />

		killslider

		killslider

		centered

		centered

		html 0,0,<img src="modules/U2/geometry/oefrosoni.it/images/273x273/fig4_ovr.png"  />

		html 0,0,<img src="modules/U2/geometry/oefrosoni.it/images/273x273/fig4_ovr.png"  />

	- restored interaction of commands 'arc' and 'angle' with sliders (specially Rotate)

	- restored interaction of commands 'arc' and 'angle' with sliders (specially Rotate)

	- drawxml() objects like katex,mathml,latex,html,obabel now interact identical as

	- drawxml() objects like katex,mathml,latex,html,obabel now interact identical as

    dragstuff library objects with slider...eg. 'first click'=select for sliders, 'second click' unselect sliders

    dragstuff library objects with slider...eg. 'first click'=select for sliders, 'second click' unselect sliders

    e.g.: `slidergroup[object_cnt] = obj or slidergroup[object_cnt] = null`

    e.g.: `slidergroup[object_cnt] = obj or slidergroup[object_cnt] = null`

    selected sliders until 'killslider'

    selected sliders until 'killslider'

    ```

    ```

	######################################################

	######################################################

	size 500,500

	size 500,500

	xrange -6,6

	xrange -6,6

	yrange -6,6

	yrange -6,6

	- TODO : rethink zooming & panning !!

	- TODO : rethink zooming & panning !!

	```

	```

	##############

	##############

	performance/size_reductions:

	performance/size_reductions:

	U1/logic/oefmap.fr&+cmd=new&defaultlist=free01&+exo=free01&+qnum=1&+scoredelay=&+seedrepeat=0&+qcmlevel=1

	U1/logic/oefmap.fr&+cmd=new&defaultlist=free01&+exo=free01&+qnum=1&+scoredelay=&+seedrepeat=0&+qcmlevel=1

		- old canvasdraw version approx 40 kb

		- old canvasdraw version approx 40 kb

		- new canvasdraw version approx 20 kb

		- new canvasdraw version approx 20 kb

		- latest canvasdraw version approx 18 kb

		- latest canvasdraw version approx 18 kb

	H5/analysis/gebieden-1.nl&subject=4&level=0&total_exos=3&rounding=-1&usage=2&taal=nl

	H5/analysis/gebieden-1.nl&subject=4&level=0&total_exos=3&rounding=-1&usage=2&taal=nl

		- old canvasdraw version approx 83 kb

		- old canvasdraw version approx 83 kb

		- new canvasdraw version approx 38 kb

		- new canvasdraw version approx 38 kb

	##############

	##############

	```

	```

	- split large files into fragments:still needs some further shifting/reorganizing

	- split large files into fragments:still needs some further shifting/reorganizing

	- multidraw: add draw primitive: crosshair | crosshairs (draw_type no. 25 | 26)

	- multidraw: add draw primitive: crosshair | crosshairs (draw_type no. 25 | 26)

    TODO: arc,angle,ellipse??

    TODO: arc,angle,ellipse??

	- multidraw: finished fillpatterns

	- multidraw: finished fillpatterns

xrange -10,10

xrange -10,10

yrange -10,10

yrange -10,10

grid 1,1,grey

grid 1,1,grey

linewidth  3

linewidth  3

snaptogrid

snaptogrid

* 6/1/2020

* 6/1/2020

	- "stringup" now can be "onclick & dragdrop"

	- "stringup" now can be "onclick & dragdrop"

eg: stringup == string+angle+mouse_rotation-code

eg: stringup == string+angle+mouse_rotation-code

note: no need to reset rotation through 'killrotate'

note: no need to reset rotation through 'killrotate'

	```

	```

	onclick

	onclick

	rotate 45

	rotate 45

	string red,0,0,AAAAAA

	string red,0,0,AAAAAA

	killrotate

	killrotate

	string red,4,4,BBBBBB

	string red,4,4,BBBBBB

	```

	```

	is identical with:

	is identical with:

	```

	```

	onclick

	onclick

	stringup red,0,0,45,AAAAAA

	stringup red,0,0,45,AAAAAA

	string red,4,4,BBBBBB

	string red,4,4,BBBBBB

	```

	```

	added command 'snaptofunction some_fun_x,some_fun_y'

	added command 'snaptofunction some_fun_x,some_fun_y'

		frect -3,3,0,0,red

		frect -3,3,0,0,red

		slider -5,5,120,10,x function display,some_text

		slider -5,5,120,10,x function display,some_text

		sliderfunction_x 5*sin(x)

		sliderfunction_x 5*sin(x)

		'sliderfunction_y some_operation_on_y'

		'sliderfunction_y some_operation_on_y'

		'sliderfunction_x some_operation_on_x'

		'sliderfunction_x some_operation_on_x'

		added command

		added command

		added argument 'function' to the slider objects.

		added argument 'function' to the slider objects.

* 28/4	removed point2point...

* 28/4	removed point2point...