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10 reyssat 1
/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
2
 *
3
 *  This program is free software; you can redistribute it and/or modify
4
 *  it under the terms of the GNU General Public License as published by
5
 *  the Free Software Foundation; either version 2 of the License, or
6
 *  (at your option) any later version.
7
 *
8
 *  This program is distributed in the hope that it will be useful,
9
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 *  GNU General Public License for more details.
12
 *
13
 *  You should have received a copy of the GNU General Public License
14
 *  along with this program; if not, write to the Free Software
15
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16
 */
8177 bpr 17
 
18
#include <errno.h>
8102 bpr 19
#include "flydraw.h"
8177 bpr 20
 
17574 bpr 21
/* Tikz things */
22
/* the_tiled,gdTiled , int the_tiled*/
23
static char *tikz_options (int the_color, int the_fill)
24
{
25
  static char buf[100];
26
  if (the_color == gdBrushed)
27
    the_color = tikz_brushColor;
28
  int r=gdImageRed(image,the_color);
29
  int g=gdImageGreen(image,the_color);
30
  int b=gdImageBlue(image,the_color);
31
  sprintf(buf, "draw={rgb,255:red,%i;green,%i;blue,%i},cap=round",r,g,b);
32
  if (the_color != tikz_brushColor) strcat(buf, ",thin");
33
  if (the_fill == -1) strcat(buf, ",dashed");
34
  if (the_fill == 1)
35
    sprintf(buf+strlen(buf), ",fill={rgb,255:red,%i;green,%i;blue,%i}",r,g,b);
36
  return buf;
37
}
38
 
39
#define flip(y) (sizey-(y))
40
 
8010 bpr 41
/* bug in gdImageFillToBorder */
10 reyssat 42
 
8162 bpr 43
void patchgdImageFillToBorder (gdImagePtr im, int x, int y, int border, int color)
8076 bpr 44
{
12473 bpr 45
  if(x>=im->sx || x<0 || y>=im->sy || y<0) return;
46
  gdImageFillToBorder(im,x,y,border,color);
8076 bpr 47
}
48
 
8162 bpr 49
void patchgdImageFill (gdImagePtr im, int x, int y, int color)
8156 bpr 50
{
12473 bpr 51
  if(x>=im->sx || x<0 || y>=im->sy || y<0) return;
52
  gdImageFill(im,x,y,color);
8156 bpr 53
}
8076 bpr 54
 
8156 bpr 55
 
9651 georgesk 56
#define DASHPIXELS 8
57
 
58
void myDashedLine(gdImagePtr im, int x1, int y1, int x2, int y2, int color){
59
  /**
60
   * emulates gdImageDashedLine with gdImageSetStyle and gdImageLine
61
   * GK: As gdImageDashedLine is slightly broken in latest libgd libraries,
62
   * GK: I implemented an emulation named "myDashedLine"
63
   **/
64
 
65
  int styleDashed[DASHPIXELS],i;
66
  for (i=0; i< DASHPIXELS/2; i++) styleDashed[i]=color;
67
  for (; i< DASHPIXELS; i++) styleDashed[i]=gdTransparent;
68
  gdImageSetStyle(im, styleDashed, DASHPIXELS);
69
  gdImageLine(im, x1, y1, x2, y2, gdStyled);
70
}
71
 
72
 
7675 bpr 73
/* File opening: with security */
10 reyssat 74
FILE *open4read(char *n)
75
{
12473 bpr 76
  char *p, *p1, *p2, namebuf[2048];
77
  int t;
78
  FILE *f;
79
  n=find_word_start(n);
80
  if(*n==0) return NULL;
81
  p=getenv("flydraw_filebase");
82
  p1=n+strlen(n)-4;if(p1<n || strcasecmp(p1,".gif")!=0) t=1; else t=0;
83
  if(p!=NULL && *p!=0) {
84
    char pbuf[MAX_LINELEN+1];
85
    snprintf(pbuf,sizeof(pbuf),"%s",p);
86
    p=find_word_start(pbuf); if(strstr(p,"..")!=NULL) return NULL;
87
    if(*n=='/' || strstr(n,"..")!=NULL) return NULL;
88
    /* prohibit unusual file/dir names */
89
    for(p1=p;*p1;p1++)
90
      if(!isalnum(*p1) && !isspace(*p1) && strchr("~_-/.",*p1)==NULL)
91
        return NULL;
92
    for(p1=n;*p1;p1++)
93
      if(!isalnum(*p1) && !isspace(*p1) && strchr("~_-/.",*p1)==NULL)
94
        return NULL;
95
    f=NULL;
96
    for(p1=p; *p1; p1=find_word_start(p2)) {
97
      p2=find_word_end(p1);
98
      if(*p2) *p2++=0;
99
      snprintf(namebuf,sizeof(namebuf),"%s/%s",p1,n);
100
      f=fopen(namebuf,"r"); if(f!=NULL) goto imgtype;
10 reyssat 101
    }
12473 bpr 102
    p1=getenv("w_wims_session");
103
    if(p1!=NULL && strncmp(n,"insert",6)==0) {
104
      snprintf(namebuf,sizeof(namebuf),"../s2/%s/%s",p1,n);
7675 bpr 105
      f=fopen(namebuf,"r");
10 reyssat 106
    }
12473 bpr 107
  }
108
  else {
109
    snprintf(namebuf,sizeof(namebuf),"%s",n);
110
    f=fopen(namebuf,"r");
111
  }
112
  imgtype:
113
  if(t && f!=NULL) {
114
    char tbuf[1024],sbuf[4096];
115
    fclose(f); f=NULL;
116
    p1=getenv("TMPDIR"); if(p1==NULL || *p1==0) p1=".";
117
    snprintf(tbuf,sizeof(tbuf),"%s/drawfile_.gif",p1);
118
    snprintf(sbuf,sizeof(sbuf),"convert %s %s",namebuf,tbuf);
119
    if (system(sbuf)) fly_error("system_failed");
120
      f=fopen(tbuf,"r");
121
  }
122
  return f;
10 reyssat 123
}
124
 
7675 bpr 125
/* Does nothing; just a comment. */
10 reyssat 126
void obj_comment(objparm *pm)
127
{
12473 bpr 128
  return;
10 reyssat 129
}
130
 
7675 bpr 131
/* define image size */
10 reyssat 132
void obj_size(objparm *pm)
133
{
12473 bpr 134
  sizex=rint(pm->pd[0]); sizey=rint(pm->pd[1]);
135
  if(sizex<0 || sizey<0 || sizex>MAX_SIZE || sizey>MAX_SIZE) {
136
    fly_error("bad_size"); return;
137
  }
138
  if(image!=NULL) {
139
    fly_error("size_already_defined"); return;
140
  }
141
  image=gdImageCreate(sizex,sizey);
17574 bpr 142
  if(tikz_file) fprintf(tikz_file,"\\clip (0,0) rectangle (%i, %i);\n", sizex, sizey);
12473 bpr 143
  if(image==NULL) fly_error("image_creation_failure");
144
  else {
145
    color_white=gdImageColorAllocate(image,255,255,255);
146
    color_black=gdImageColorAllocate(image,0,0,0);
147
    color_bounder=gdImageColorAllocate(image,1,2,3);
148
    color_frame=gdImageColorAllocate(image,254,254,254);
149
  }
10 reyssat 150
}
151
 
7675 bpr 152
/* new image */
10 reyssat 153
void obj_new(objparm *pm)
154
{
12473 bpr 155
  if(image) {
156
    gdImageDestroy(image);image=NULL;
157
  }
158
  if(pm->pcnt>=2) { obj_size(pm); gdImageRectangle(image,0,0,sizex-1,sizey-1,color_frame);}
159
  else sizex=sizey=0;
160
  saved=0;
10 reyssat 161
}
162
 
7675 bpr 163
/* new image */
10 reyssat 164
void obj_existing(objparm *pm)
165
{
12473 bpr 166
  FILE *inf;
167
  char *pp;
7615 bpr 168
 
12473 bpr 169
  if(image) {
170
    gdImageDestroy(image);image=NULL;
171
  }
172
  pp=find_word_start(pm->str);*find_word_end(pp)=0;
173
  inf=open4read(pp);
174
  if(inf==NULL) {
175
    fly_error("file_not_exist"); return;
176
  }
177
  image=gdImageCreateFromGif(inf); fclose(inf);
178
  if(image==NULL) {
179
    fly_error("bad_gif"); return;
180
  }
181
  sizex=image->sx; sizey=image->sy;
182
  saved=0;
10 reyssat 183
}
184
 
7675 bpr 185
/* solid line */
10 reyssat 186
void obj_line(objparm *pm)
187
{
12473 bpr 188
  scale(pm->pd,pm->p,2);
189
  gdImageLine(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],pm->color[0]);
17574 bpr 190
  if (tikz_file)
191
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
192
      tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),pm->p[2],flip(pm->p[3]));
12473 bpr 193
  if(vimg_enable) vimg_line(scale_buf[0],scale_buf[1],scale_buf[2],scale_buf[3]);
10 reyssat 194
}
195
 
1024 bpr 196
void _obj_arrow(objparm *pm, int twoside)
10 reyssat 197
{
12473 bpr 198
  int l,xx,yy;
199
  gdPoint ii[3];
200
  double dx,dy,length,dd[6];
201
  scale(pm->pd,pm->p,2);
202
  xx=ii[0].x=pm->p[2];yy=ii[0].y=pm->p[3];
203
  l=pm->pd[4];if(l<0) l=0; if(l>200) l=200;
204
  scale2(pm->pd[0]-pm->pd[2],pm->pd[1]-pm->pd[3],&dx,&dy);
205
  length=sqrt(dx*dx+dy*dy);
206
  if(length<3 || l<5) goto stem;
207
  dd[0]=l*dx/length; dd[1]=l*dy/length;
208
  #define fat 0.27
209
  dd[2]=dd[0]+dd[1]*fat; dd[3]=dd[1]-dd[0]*fat;
210
  dd[4]=dd[0]-dd[1]*fat; dd[5]=dd[1]+dd[0]*fat;
211
  ii[1].x=rint(dd[2])+ii[0].x; ii[1].y=rint(dd[3])+ii[0].y;
212
  ii[2].x=rint(dd[4])+ii[0].x; ii[2].y=rint(dd[5])+ii[0].y;
213
  gdImageFilledPolygon(image, ii,3,pm->color[0]);
17578 bpr 214
  if(tikz_file)
215
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i) -- (%i, %i) -- cycle;\n",
216
      tikz_options(pm->color[0],1),ii[0].x,flip(ii[0].y),ii[1].x,flip(ii[1].y),ii[2].x,flip(ii[2].y));
217
  if(vimg_enable) vimg_polyline(scale_buf,3,1);
12473 bpr 218
  xx=rint(dd[0])+ii[0].x;yy=rint(dd[1])+ii[0].y;
219
  if(twoside) {
220
    ii[0].x=pm->p[0]; ii[0].y=pm->p[1];
221
    ii[1].x=-rint(dd[2])+ii[0].x; ii[1].y=-rint(dd[3])+ii[0].y;
222
    ii[2].x=-rint(dd[4])+ii[0].x; ii[2].y=-rint(dd[5])+ii[0].y;
8163 bpr 223
    gdImageFilledPolygon(image, ii,3,pm->color[0]);
17578 bpr 224
  if(tikz_file)
225
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i) -- (%i, %i) -- cycle;\n",
226
      tikz_options(pm->color[0],1),ii[0].x,flip(ii[0].y),ii[1].x,flip(ii[1].y),ii[2].x,flip(ii[2].y));
12473 bpr 227
  }
228
  stem: if(pm->fill)
229
    myDashedLine(image,pm->p[0],pm->p[1],xx,yy,pm->color[0]);
230
  else
231
    gdImageLine(image,pm->p[0],pm->p[1],xx,yy,pm->color[0]);
17578 bpr 232
  if(tikz_file)
233
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
17584 bpr 234
      tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),xx,flip(yy));
12473 bpr 235
  if(vimg_enable) vimg_line(scale_buf[0],scale_buf[1],scale_buf[2],scale_buf[3]);
10 reyssat 236
}
237
 
7675 bpr 238
/* Arrow */
1024 bpr 239
void obj_arrow(objparm *pm)
240
{
12473 bpr 241
  _obj_arrow(pm,0);
1024 bpr 242
}
243
 
7675 bpr 244
/* 2-sided arrow */
1024 bpr 245
void obj_arrow2(objparm *pm)
246
{
12473 bpr 247
   _obj_arrow(pm,1);
1024 bpr 248
}
249
 
7675 bpr 250
/* horizontal line */
10 reyssat 251
void obj_hline(objparm *pm)
252
{
12473 bpr 253
  scale(pm->pd,pm->p,1);
254
  if(pm->fill)
255
    myDashedLine(image,0,pm->p[1],sizex,pm->p[1],pm->color[0]);
256
  else
257
    gdImageLine(image,0,pm->p[1],sizex,pm->p[1],pm->color[0]);
17574 bpr 258
  if (tikz_file)
259
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
260
      tikz_options(pm->color[0],pm->fill),0,flip(pm->p[1]),sizex,flip(pm->p[1]));
10 reyssat 261
}
262
 
17574 bpr 263
/* tikzfile */
264
void obj_tikzfile(objparm *pm)
265
{
266
  char *p;
267
  if(tikz_file){
268
    fprintf(tikz_file,"\\end{tikzpicture}\n\\end{document}\n");
269
    fclose(tikz_file);
270
  }
271
  p=find_word_start(pm->str); *find_word_end(p)=0;
272
  snprintf(tikzfilename,sizeof(tikzfilename),"%s",p);
273
  tikz_file=fopen(tikzfilename,"w");
274
  if(!tikz_file)
275
    fly_error("tikz_nopen");
276
  fprintf(tikz_file,"\\documentclass\[11pt]{article}\n\\usepackage{tikz}\n\\begin{document}\n\\begin{tikzpicture}\[scale=0.0254]\n");
277
}
278
 
7675 bpr 279
/* vertical line */
10 reyssat 280
void obj_vline(objparm *pm)
281
{
12473 bpr 282
  scale(pm->pd,pm->p,1);
283
  if(pm->fill)
284
    myDashedLine(image,pm->p[0],0,pm->p[0],sizey,pm->color[0]);
285
  else
286
    gdImageLine(image,pm->p[0],0,pm->p[0],sizey,pm->color[0]);
17574 bpr 287
  if (tikz_file)
288
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
289
      tikz_options(pm->color[0],pm->fill),pm->p[0],0,pm->p[0],sizey);
10 reyssat 290
}
291
 
7675 bpr 292
/* dashed line */
10 reyssat 293
void obj_dline(objparm *pm)
294
{
12473 bpr 295
  scale(pm->pd,pm->p,2);
296
  myDashedLine(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3], pm->color[0]);
17574 bpr 297
  if (tikz_file)
298
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
299
      tikz_options(pm->color[0],-1),
300
      pm->p[0],flip(pm->p[1]),pm->p[2],flip(pm->p[3]));
10 reyssat 301
}
302
 
7675 bpr 303
/* parallel lines.
304
 * x1,y1,x2,y2,xv,yv,n,color */
10 reyssat 305
void obj_parallel(objparm *pm)
306
{
12473 bpr 307
  int i, n, xi,yi;
308
  double xv,yv;
309
  n=pm->pd[6]; if(n<0) return; if(n>256) n=256;
310
  scale(pm->pd,pm->p,3);
311
  scale2(pm->pd[4],pm->pd[5],&xv,&yv);
312
  for(i=0;i<n;i++) {
313
    xi=rint(i*xv); yi=rint(i*yv);
314
    gdImageLine(image,pm->p[0]+xi,pm->p[1]+yi,pm->p[2]+xi,pm->p[3]+yi,
315
              pm->color[0]);
17574 bpr 316
    if (tikz_file)
317
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
318
        tikz_options(pm->color[0],pm->fill),
319
        pm->p[0]+xi,flip(pm->p[1]+yi),pm->p[2]+xi,flip(pm->p[3]+yi));
12473 bpr 320
    if(vimg_enable) vimg_line(scale_buf[0]+i*(scale_buf[4]-transx),
321
        scale_buf[1]+i*(scale_buf[5]-transy),
322
        scale_buf[2]+i*(scale_buf[4]-transx),
323
        scale_buf[3]+i*(scale_buf[5]-transy));
324
  }
10 reyssat 325
}
326
 
7675 bpr 327
/* rectangle */
10 reyssat 328
void obj_rect(objparm *pm)
329
{
12473 bpr 330
  int x1,y1,x2,y2;
331
  scale(pm->pd,pm->p,2);
332
  x1=min(pm->p[0],pm->p[2]); x2=max(pm->p[0],pm->p[2]);
333
  y1=min(pm->p[1],pm->p[3]); y2=max(pm->p[1],pm->p[3]);
334
  if(pm->fill)
335
    gdImageFilledRectangle(image,x1,y1,x2,y2,pm->color[0]);
336
  else
337
    gdImageRectangle(image,x1,y1,x2,y2,pm->color[0]);
17584 bpr 338
  if(tikz_file)
339
    fprintf(tikz_file,
340
      "\\draw\[%s] (%i,%i) rectangle (%i,%i);\n",
341
      tikz_options(pm->color[0],pm->fill),x1,flip(y1),x2,flip(y2));
12473 bpr 342
  if(vimg_enable) vimg_rect(scale_buf[0],scale_buf[1],scale_buf[2],scale_buf[3]);
10 reyssat 343
}
344
 
7675 bpr 345
/* square */
10 reyssat 346
void obj_square(objparm *pm)
347
{
12473 bpr 348
  int w,h;
349
  scale(pm->pd,pm->p,1);
350
  w=rint(pm->pd[2]); h=rint(pm->pd[2]);
351
  if(pm->fill)
352
    gdImageFilledRectangle(image,pm->p[0],pm->p[1],
353
               pm->p[0]+w,pm->p[1]+h,pm->color[0]);
354
  else
355
    gdImageRectangle(image,pm->p[0],pm->p[1],
356
               pm->p[0]+w,pm->p[1]+h,pm->color[0]);
17574 bpr 357
  if(tikz_file){
358
    fprintf(tikz_file,
359
      "\\draw\[%s] (%i,%i) rectangle (%i,%i);\n",
360
      tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),
361
      pm->p[0]+w,flip(pm->p[1]+h));
362
  }
12473 bpr 363
  if(vimg_enable) vimg_rect(scale_buf[0],scale_buf[1],
364
                      scale_buf[0]+pm->pd[2],scale_buf[1]+pm->pd[2]);
10 reyssat 365
}
366
 
7675 bpr 367
/* triangle */
10 reyssat 368
void obj_triangle(objparm *pm)
369
{
12473 bpr 370
  scale(pm->pd,pm->p,3);
371
  if(pm->fill)
372
    gdImageFilledPolygon(image,(gdPointPtr) pm->p,3,pm->color[0]);
373
  else
374
    gdImagePolygon(image,(gdPointPtr) pm->p,3,pm->color[0]);
17574 bpr 375
  if (tikz_file)
376
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i) -- (%i, %i) -- cycle;\n",
377
      tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),pm->p[2],flip(pm->p[3]),pm->p[4],flip(pm->p[5]));
12473 bpr 378
  if(vimg_enable) vimg_polyline(scale_buf,3,1);
10 reyssat 379
}
380
 
7675 bpr 381
/* polygon */
10 reyssat 382
void obj_poly(objparm *pm)
383
{
17574 bpr 384
  int cnt,i;
12473 bpr 385
  cnt=(pm->pcnt)/2;
386
  scale(pm->pd,pm->p,cnt);
387
  if(pm->fill)
388
    gdImageFilledPolygon(image,(gdPointPtr) pm->p,cnt,pm->color[0]);
389
  else
390
    gdImagePolygon(image,(gdPointPtr) pm->p,cnt,pm->color[0]);
17574 bpr 391
    if(tikz_file)
392
      for (i= 0; i<cnt; i++)
393
        fprintf(tikz_file,"\\draw\[%s] (%i,%i)--(%i,%i);\n",
394
        tikz_options(pm->color[0],pm->fill),
395
        pm->p[2*i],flip(pm->p[2*i+1]),
396
        pm->p[2*((i+1)%cnt)],flip(pm->p[2*((i+1)%cnt)+1]));
12473 bpr 397
  if(vimg_enable) vimg_polyline(scale_buf,cnt,1);
10 reyssat 398
}
399
 
7675 bpr 400
/* rays */
10 reyssat 401
void obj_rays(objparm *pm)
402
{
12473 bpr 403
  int i, n;
404
  n=(pm->pcnt)/2;
405
  scale(pm->pd,pm->p,n);
406
  for(i=2;i<2*n;i+=2) {
407
    gdImageLine(image,pm->p[0],pm->p[1],pm->p[i],pm->p[i+1],pm->color[0]);
17574 bpr 408
    if (tikz_file)
409
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
410
        tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),pm->p[i],flip(pm->p[i+1]));
12473 bpr 411
    if(vimg_enable) vimg_line(scale_buf[0],scale_buf[1],
412
                        scale_buf[i],scale_buf[i+1]);
413
  }
10 reyssat 414
}
8414 bpr 415
/* crosshair */
416
void obj_crosshair(objparm *pm)
417
{
12473 bpr 418
  scale(pm->pd,pm->p,2);
419
  gdImageLine(image,pm->p[0]+width2,pm->p[1]+width2,pm->p[0]-width2,pm->p[1]-width2,pm->color[0]);
420
  gdImageLine(image,pm->p[0]-width2,pm->p[1]+width2,pm->p[0]+width2,pm->p[1]-width2,pm->color[0]);
17574 bpr 421
  if (tikz_file){
422
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
423
      tikz_options(pm->color[0],pm->fill),pm->p[0]+width2,flip(pm->p[1]+width2),pm->p[0]-width2,flip(pm->p[1]-width2));
424
    fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
425
      tikz_options(pm->color[0],pm->fill),pm->p[0]-width2,flip(pm->p[1]+width2),pm->p[0]+width2,flip(pm->p[1]-width2));
426
  }
8414 bpr 427
}
428
/* crosshairs */
10 reyssat 429
 
8414 bpr 430
void obj_crosshairs(objparm *pm)
431
{
12473 bpr 432
  int i, n;
433
  n=(pm->pcnt)/2;
434
  scale(pm->pd,pm->p,n);
435
  for(i=0;i<2*n;i+=2) {
436
    gdImageLine(image,pm->p[i]+width2,pm->p[i+1]+width2,pm->p[i]-width2,pm->p[i+1]-width2,pm->color[0]);
437
    gdImageLine(image,pm->p[i]-width2,pm->p[i+1]+width2,pm->p[i]+width2,pm->p[i+1]-width2,pm->color[0]);
17574 bpr 438
    if (tikz_file){
439
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
440
        tikz_options(pm->color[0],pm->fill),pm->p[i]+width2,flip(pm->p[i+1]+width2),pm->p[i]-width2,flip(pm->p[i+1]-width2));
441
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
442
        tikz_options(pm->color[0],pm->fill),pm->p[i]-width2,flip(pm->p[i+1]+width2),pm->p[i]+width2,flip(pm->p[i+1]-width2));
443
    }
12473 bpr 444
  }
8414 bpr 445
}
446
 
447
 
7675 bpr 448
/* segments */
10 reyssat 449
void obj_lines(objparm *pm)
450
{
12473 bpr 451
  int i, n;
452
  n=(pm->pcnt)/2;
453
  scale(pm->pd,pm->p,n);
17574 bpr 454
  for(i=2;i<2*n;i+=2){
12473 bpr 455
    gdImageLine(image,pm->p[i-2],pm->p[i-1],pm->p[i],pm->p[i+1],pm->color[0]);
17574 bpr 456
    if (tikz_file){
457
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
458
        tikz_options(pm->color[0],pm->fill),pm->p[i-2],flip(pm->p[i-1]),pm->p[i],flip(pm->p[i+1]));
459
    }
460
    if(vimg_enable) vimg_polyline(scale_buf,n,0);
461
  }
10 reyssat 462
}
16344 bpr 463
/*segments from x1,y1 to x2,y2, x3,y3 to x4,y4, etc */
464
void obj_segments(objparm *pm)
465
{
466
  int i, n;
467
  n=(pm->pcnt)/4;
468
  scale(pm->pd,pm->p,2*n);
17574 bpr 469
  for(i=0;i<4*n;i+=4){
16344 bpr 470
    gdImageLine(image,pm->p[i],pm->p[i+1],pm->p[i+2],pm->p[i+3],pm->color[0]);
17574 bpr 471
    if (tikz_file){
472
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
473
        tikz_options(pm->color[0],pm->fill),pm->p[i],flip(pm->p[i+1]),pm->p[i+2],flip(pm->p[i+3]));
474
    }
475
  }
16344 bpr 476
}
7675 bpr 477
/* segments */
10 reyssat 478
void obj_dlines(objparm *pm)
479
{
12473 bpr 480
  int i, n;
481
  n=(pm->pcnt)/2;
482
  scale(pm->pd,pm->p,n);
483
  for(i=2;i<2*n;i+=2)
484
    myDashedLine(image,pm->p[i-2],pm->p[i-1],pm->p[i],pm->p[i+1],pm->color[0]);
17574 bpr 485
    if (tikz_file){
486
      fprintf(tikz_file, "\\draw\[%s] (%i, %i) -- (%i, %i);\n",
487
        tikz_options(pm->color[0],pm->fill),pm->p[i-2],flip(pm->p[i-1]),pm->p[i],flip(pm->p[i+1]));
488
    }
12473 bpr 489
  if(vimg_enable) vimg_polyline(scale_buf,n,0);
10 reyssat 490
}
491
 
7675 bpr 492
/* points */
10 reyssat 493
void obj_points(objparm *pm)
494
{
12473 bpr 495
  int i, n;
496
  n=(pm->pcnt)/2;
497
  scale(pm->pd,pm->p,n);
17574 bpr 498
  for(i=0;i<2*n;i+=2){
12473 bpr 499
    gdImageSetPixel(image,pm->p[i],pm->p[i+1],pm->color[0]);
17574 bpr 500
    if(tikz_file) fprintf(tikz_file, "\\draw\[%s] (%i, %i) circle (0pt);\n",
501
      tikz_options(pm->color[0],pm->fill),pm->p[i],flip(pm->p[i+1]));
502
  }
10 reyssat 503
}
504
 
7675 bpr 505
/* lattice.
506
 * x0,y0,xv1,yv1,xv2,yv2,n1,n2,color */
10 reyssat 507
void obj_lattice(objparm *pm)
508
{
12473 bpr 509
  int n1,n2,i1,i2,xi1,yi1,xi2,yi2;
510
  double xv1,xv2,yv1,yv2;
511
  n1=pm->pd[6];n2=pm->pd[7]; if(n1<0 || n2<0) return;
512
  if(n1>256) n1=256;
513
  if(n2>256) n2=256;
514
  scale(pm->pd,pm->p,1);
515
  scale2(pm->pd[2],pm->pd[3],&xv1,&yv1);
516
  scale2(pm->pd[4],pm->pd[5],&xv2,&yv2);
517
  for(i1=0;i1<n1;i1++) {
518
    xi1=rint(i1*xv1)+pm->p[0]; yi1=rint(i1*yv1)+pm->p[1];
519
    for(i2=0;i2<n2;i2++) {
520
      xi2=i2*xv2+xi1;yi2=i2*yv2+yi1;
521
      gdImageSetPixel(image,xi2,yi2,pm->color[0]);
17574 bpr 522
      if(tikz_file) fprintf(tikz_file,"\\draw[%s] (%i,%i) circle (0pt);\n",
523
        tikz_options(pm->color[0],0),xi2,flip(yi2));
10 reyssat 524
    }
12473 bpr 525
  }
10 reyssat 526
}
527
 
7675 bpr 528
/* arc */
10 reyssat 529
void obj_arc(objparm *pm)
530
{
12473 bpr 531
  scale(pm->pd,pm->p,1);
532
  pm->p[2]=rint(pm->pd[2]*xscale); pm->p[3]=rint(pm->pd[3]*yscale);
533
  gdImageArc(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],
534
           pm->pd[4],pm->pd[5],pm->color[0]);
17574 bpr 535
  if(tikz_file) {
536
      fprintf(tikz_file,
537
    "\\draw\[%s, domain=%f:%f] plot ({%i+%f*cos(\\x)}, {%i+%f*sin(\\x)});\n",
538
    tikz_options(pm->color[0],pm->fill),
539
      pm->pd[4],pm->pd[5],pm->p[0],pm->p[2]*0.5,flip(pm->p[1]),pm->p[3]*(-0.5));
540
  }
541
  /*FIXME echelle mauvaise*/
12473 bpr 542
  if(vimg_enable) vimg_arc(scale_buf[0],scale_buf[1],
543
                     0.5*pm->pd[2],0.5*pm->pd[3],pm->pd[4],pm->pd[5]);
10 reyssat 544
}
545
 
7675 bpr 546
/* Ellipse: centre 0,1, width 2, hight 3, color 4,5,6 */
10 reyssat 547
void obj_ellipse(objparm *pm)
548
{
12473 bpr 549
  scale(pm->pd,pm->p,1);
550
  pm->p[2]=rint(pm->pd[2]*xscale); pm->p[3]=rint(pm->pd[3]*yscale);
551
  if(pm->fill) {
552
    gdImageArc(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],0,360,
553
             color_bounder);
554
    patchgdImageFillToBorder(image,pm->p[0],pm->p[1],
555
                    color_bounder,pm->color[0]);
556
  }
557
  gdImageArc(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],0,360,pm->color[0]);
17574 bpr 558
  if(tikz_file) fprintf(tikz_file,"\\draw\[%s] (%i,%i) ellipse (%f and %f);\n\n",
559
    tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),pm->p[2]/2.,pm->p[3]/2.);
560
  if(vimg_enable) vimg_ellipse(scale_buf[0],scale_buf[1],0.5*pm->pd[2],0.5*pm->pd[3]);
10 reyssat 561
}
562
 
7675 bpr 563
/* Circle */
10 reyssat 564
void obj_circle(objparm *pm)
565
{
12473 bpr 566
  scale(pm->pd,pm->p,1);
567
  pm->p[2]=rint(pm->pd[2]); pm->p[3]=rint(pm->pd[2]);
568
  if(pm->fill) {
569
    gdImageArc(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],0,360,
570
             color_bounder);
571
    patchgdImageFillToBorder(image,pm->p[0],pm->p[1],
572
                    color_bounder,pm->color[0]);
573
  }
574
  gdImageArc(image,pm->p[0],pm->p[1],pm->p[2],pm->p[3],0,360,pm->color[0]);
17574 bpr 575
  if(tikz_file) fprintf(tikz_file, "\\draw\[%s] (%i, %i) circle (%f);\n",
576
      tikz_options(pm->color[0],pm->fill),pm->p[0],flip(pm->p[1]),pm->p[2]/2.);
10 reyssat 577
}
578
 
7675 bpr 579
/* flood fill */
10 reyssat 580
void obj_fill(objparm *pm)
581
{
12473 bpr 582
  scale(pm->pd,pm->p,1);
583
  patchgdImageFill(image,pm->p[0],pm->p[1],pm->color[0]);
10 reyssat 584
}
585
 
7675 bpr 586
/* flood fill to border*/
10 reyssat 587
void obj_fillb(objparm *pm)
588
{
12473 bpr 589
  scale(pm->pd,pm->p,1);
590
  patchgdImageFillToBorder(image,pm->p[0],pm->p[1],pm->color[0],pm->color[1]);
10 reyssat 591
}
592
 
593
gdImagePtr himg;
594
 
595
int makehatchimage(int x, int y, int px, int py, int col)
596
{
12473 bpr 597
  int c1,c2,r,g,b;
598
  gdImagePtr saveimg;
599
  himg=gdImageCreate(x,y);
600
  c1=gdImageGetPixel(image,px,py);
601
  r=gdImageRed(image,c1); g=gdImageGreen(image,c1); b=gdImageBlue(image,c1);
602
  if(r>=255) r--; else r++; if(g>=255) g--; else g++; if(b>=255) b--; else b++;
603
  c1=gdImageColorAllocate(himg,r,g,b);
604
  r=gdImageRed(image,col); g=gdImageGreen(image,col); b=gdImageBlue(image,col);
605
  c2=gdImageColorAllocate(himg,r,g,b);
606
  if(width>1) {
607
    savew=-1; saveimg=image;
608
    image=himg; c2=widthcolor(width,c2); image=saveimg;
609
    c2=gdBrushed; savew=-1;
610
  }
611
  return c2;
10 reyssat 612
}
613
 
7675 bpr 614
/* flood fill with hatching */
10 reyssat 615
void obj_hatchfill(objparm *pm)
616
{
12473 bpr 617
  int nx,ny,ax,ay, dir, c;
618
  scale(pm->pd,pm->p,1);
619
  nx=pm->pd[2]; ny=pm->pd[3]; ax=abs(nx); ay=abs(ny);
620
  if(nx==0 && ny==0) {fly_error("bad displacement vector"); return;}
621
  if((nx>0 && ny>0) || (nx<0 && ny<0)) dir=1; else dir=-1;
622
  if(ax==0) {ax=100; dir=2;}
623
  if(ay==0) {ay=100; dir=3;}
624
  c=makehatchimage(ax,ay,pm->p[0],pm->p[1],pm->color[0]);
625
  switch(dir) {
626
    case -1: {
627
      gdImageLine(himg,0,ay-1,ax-1,0,c);
628
      if(width>1) {
629
        gdImageLine(himg,-ax,ay-1,-1,0,c);
630
        gdImageLine(himg,ax,ay-1,2*ax-1,0,c);
631
        gdImageLine(himg,0,-1,ax-1,-ay,c);
632
        gdImageLine(himg,0,2*ay-1,ax-1,ay,c);
7675 bpr 633
      }
12473 bpr 634
      break;
635
    }
636
    case 1: {
637
      gdImageLine(himg,0,0,ax-1,ay-1,c);
638
      if(width>1) {
639
        gdImageLine(himg,-ax,0,-1,ay-1,c);
640
        gdImageLine(himg,ax,0,2*ax-1,ay-1,c);
641
        gdImageLine(himg,0,-ay,ax-1,-1,c);
642
        gdImageLine(himg,0,ay,ax-1,2*ay-1,c);
7675 bpr 643
      }
12473 bpr 644
      break;
645
    }
646
    case 2: gdImageLine(himg,0,ay/2,ax-1,ay/2,c); break;
17574 bpr 647
    case 3: gdImageLine(himg,ax/2,0,ax/2,ay-1,c); break;
12473 bpr 648
  }
649
  gdImageSetTile(image,himg);
650
  patchgdImageFill(image,pm->p[0],pm->p[1],gdTiled);
651
  gdImageDestroy(himg);
652
  if(tiled) gdImageSetTile(image,tileimg);
10 reyssat 653
}
654
 
7675 bpr 655
/* flood fill with grid */
10 reyssat 656
void obj_gridfill(objparm *pm)
657
{
12473 bpr 658
  int nx,ny, c;
659
  scale(pm->pd,pm->p,1);
660
  nx=pm->pd[2]; ny=pm->pd[3]; nx=abs(nx); ny=abs(ny);
661
  if(nx==0 && ny==0) {fly_error("bad grid size"); return;}
662
  c=makehatchimage(nx,ny,pm->p[0],pm->p[1],pm->color[0]);
663
  gdImageLine(himg,0,ny/2,nx-1,ny/2,c); gdImageLine(himg,nx/2,0,nx/2,ny-1,c);
664
  gdImageSetTile(image,himg);
665
  patchgdImageFill(image,pm->p[0],pm->p[1],gdTiled);
666
  gdImageDestroy(himg);
667
  if(tiled) gdImageSetTile(image,tileimg);
10 reyssat 668
}
669
 
7675 bpr 670
/* flood fill with double hatching */
10 reyssat 671
void obj_diafill(objparm *pm)
672
{
12473 bpr 673
  int nx,ny, c;
674
  scale(pm->pd,pm->p,1);
675
  nx=pm->pd[2]; ny=pm->pd[3]; nx=abs(nx); ny=abs(ny);
676
  if(nx==0 && ny==0) {fly_error("bad grid size"); return;}
677
  c=makehatchimage(nx,ny,pm->p[0],pm->p[1],pm->color[0]);
678
  gdImageLine(himg,0,0,nx-1,ny-1,c); gdImageLine(himg,0,ny-1,nx-1,0,c);
679
  gdImageSetTile(image,himg);
680
  patchgdImageFill(image,pm->p[0],pm->p[1],gdTiled);
681
  gdImageDestroy(himg);
682
  if(tiled) gdImageSetTile(image,tileimg);
10 reyssat 683
}
684
 
7675 bpr 685
/* flood fill with double hatching */
10 reyssat 686
void obj_dotfill(objparm *pm)
687
{
12473 bpr 688
  int nx,ny, c;
689
  scale(pm->pd,pm->p,1);
690
  nx=pm->pd[2]; ny=pm->pd[3]; nx=abs(nx); ny=abs(ny);
691
  if(nx==0 && ny==0) {fly_error("bad grid size"); return;}
692
  c=makehatchimage(nx,ny,pm->p[0],pm->p[1],pm->color[0]);
693
  gdImageSetPixel(himg,nx/2,ny/2,c);
694
  gdImageSetTile(image,himg);
695
  patchgdImageFill(image,pm->p[0],pm->p[1],gdTiled);
696
  gdImageDestroy(himg);
697
  if(tiled) gdImageSetTile(image,tileimg);
10 reyssat 698
}
699
 
700
struct {
12473 bpr 701
  char *name;
702
  gdFontPtr *fpt;
10 reyssat 703
} fonttab[]={
12473 bpr 704
  {"tiny",      &gdFontTiny},
705
  {"small",      &gdFontSmall},
706
  {"medium",&gdFontMediumBold},
707
  {"large",      &gdFontLarge},
708
  {"giant",      &gdFontGiant},
709
  {"huge",      &gdFontGiant}
10 reyssat 710
};
711
 
712
#define fonttab_no (sizeof(fonttab)/sizeof(fonttab[0]))
713
 
7675 bpr 714
/* string */
10 reyssat 715
void obj_string(objparm *pm)
716
{
12473 bpr 717
  char *pp, *pe, *p2;
718
  int i;
719
  pp=pm->str; pe=strchr(pp,','); if(pe==NULL) {
720
    fly_error("too_few_parms"); return;
721
  }
722
  *pe++=0; pp=find_word_start(pp); *find_word_end(pp)=0;
723
  pe=find_word_start(pe); strip_trailing_spaces(pe);
724
  if(*pp) {
725
    for(i=0;i<fonttab_no && strcmp(pp,fonttab[i].name)!=0; i++);
726
    if(i>=fonttab_no) i=1;
727
  }
728
  else i=1;
729
  scale(pm->pd,pm->p,1);
730
  if(*pe=='"') {
731
    p2=strchr(pe+1,'"');
732
    if(p2 && *(p2+1)==0) {*p2=0; pe++;}
733
  }
734
  if(pm->fill)
735
    gdImageStringUp(image,*(fonttab[i].fpt),pm->p[0],pm->p[1], (unsigned char*) pe,
736
        pm->color[0]);
737
  else
738
    gdImageString(image,*(fonttab[i].fpt),pm->p[0],pm->p[1], (unsigned char*) pe,
739
        pm->color[0]);
10 reyssat 740
}
741
 
7675 bpr 742
/* point */
10 reyssat 743
void obj_point(objparm *pm)
744
{
12473 bpr 745
  scale(pm->pd,pm->p,1);
746
  gdImageSetPixel(image,pm->p[0],pm->p[1],pm->color[0]);
17574 bpr 747
  if(tikz_file) fprintf(tikz_file,"\\draw[%s] (%i,%i) circle (0pt);\n",
748
    tikz_options(pm->color[0],0),pm->p[0],flip(pm->p[1]));
10 reyssat 749
}
750
 
7675 bpr 751
/* copy an image file */
10 reyssat 752
void obj_copy(objparm *pm)
753
{
12473 bpr 754
  char *pp;
755
  FILE *inf;
756
  gdImagePtr insimg;
7615 bpr 757
 
12473 bpr 758
  pp=find_word_start(pm->str);*find_word_end(pp)=0;
759
  inf=open4read(pp);
760
  if(inf==NULL) {
761
    fly_error("file_not_exist"); return;
762
  }
763
  insimg=gdImageCreateFromGif(inf); fclose(inf);
764
  if(insimg==NULL) {
765
    fly_error("bad_gif"); return;
766
  }
767
  scale(pm->pd,pm->p,1);
768
  if(pm->pd[2]<0 && pm->pd[3]<0 && pm->pd[4]<0 && pm->pd[5]<0)
769
    gdImageCopy(image,insimg,pm->p[0],pm->p[1],0,0,
770
            insimg->sx,insimg->sy);
771
  else
772
    gdImageCopy(image,insimg,pm->p[0],pm->p[1],pm->pd[2],pm->pd[3],
773
            pm->pd[4]-pm->pd[2],pm->pd[5]-pm->pd[3]);
774
  gdImageDestroy(insimg);
10 reyssat 775
}
776
 
7675 bpr 777
/* copy an image file, with resizing */
10 reyssat 778
void obj_copyresize(objparm *pm)
779
{
12473 bpr 780
  char *pp;
781
  FILE *inf;
782
  gdImagePtr insimg;
7615 bpr 783
 
12473 bpr 784
  pp=find_word_start(pm->str);*find_word_end(pp)=0;
785
  inf=open4read(pp);
786
  if(inf==NULL) {
787
    fly_error("file_not_found"); return;
788
  }
789
  insimg=gdImageCreateFromGif(inf); fclose(inf);
790
  if(insimg==NULL) {
791
    fly_error("bad_gif"); return;
792
  }
793
  scale(pm->pd+4,pm->p+4,2);
794
  if(pm->pd[0]<0 && pm->pd[1]<0 && pm->pd[2]<0 && pm->pd[3]<0)
795
    gdImageCopyResized(image,insimg,pm->p[4],pm->p[5],0,0,
796
                 pm->p[6]-pm->p[4]+1,pm->p[7]-pm->p[5]+1,
797
                 insimg->sx,insimg->sy);
798
  else
799
    gdImageCopyResized(image,insimg,pm->p[4],pm->p[5],pm->pd[0],pm->pd[1],
800
                 pm->p[6]-pm->p[4]+1,pm->p[7]-pm->p[5]+1,
801
                 pm->pd[2]-pm->pd[0]+1,pm->pd[3]-pm->pd[1]+1);
802
  gdImageDestroy(insimg);
10 reyssat 803
}
804
 
7675 bpr 805
/* set brush or tile */
10 reyssat 806
void obj_setbrush(objparm *pm)
807
{
12473 bpr 808
  char *pp;
809
  FILE *inf;
810
  gdImagePtr insimg;
10 reyssat 811
 
12473 bpr 812
  pp=find_word_start(pm->str); *find_word_end(pp)=0;
813
  inf=open4read(pp); if(inf==NULL) {
814
    fly_error("file_not_found"); return;
815
  }
816
  insimg=gdImageCreateFromGif(inf); fclose(inf);
817
  if(insimg==NULL) {
818
    fly_error("bad_gif"); return;
819
  }
820
  if(pm->fill) {
821
    gdImageSetTile(image,insimg); tiled=1; tileimg=insimg;
822
  }
823
  else {
824
    gdImageSetBrush(image,insimg);brushed=1; brushimg=insimg;
825
  }
10 reyssat 826
}
827
 
7675 bpr 828
/* kill brush */
10 reyssat 829
void obj_killbrush(objparm *pm)
830
{
12473 bpr 831
  if(brushimg) gdImageDestroy(brushimg);
832
  brushed=0; brushimg=NULL;
10 reyssat 833
}
834
 
7675 bpr 835
/* kill tile */
10 reyssat 836
void obj_killtile(objparm *pm)
837
{
12473 bpr 838
  if(tileimg) gdImageDestroy(tileimg);
839
  tiled=0; tileimg=NULL;
10 reyssat 840
}
841
 
7675 bpr 842
/* set style */
10 reyssat 843
void obj_setstyle(objparm *pm)
844
{
12473 bpr 845
  int i,t;
846
  t=pm->pcnt/3; if(t<=0) {
847
    fly_error("too_few_parms"); return;
848
  }
849
  for(i=0;i<t;i++) {
850
    if(pm->pd[3*i]<0 || pm->pd[3*i+1]<0 || pm->pd[3*i+2]<0)
851
      pm->p[i]=gdTransparent;
852
    else
853
      pm->p[i]=getcolor(pm->pd[3*i],pm->pd[3*i+1],pm->pd[3*i+2]);
854
  }
855
  gdImageSetStyle(image,pm->p,t); styled=1;
10 reyssat 856
}
857
 
7675 bpr 858
/* kill style */
10 reyssat 859
void obj_killstyle(objparm *pm)
860
{
12473 bpr 861
  styled=0;
10 reyssat 862
}
863
 
7675 bpr 864
/* set transparent */
10 reyssat 865
void obj_transp(objparm *pm)
866
{
12473 bpr 867
  gdImageColorTransparent(image,pm->color[0]);
10 reyssat 868
}
869
 
7675 bpr 870
/* set interlace */
10 reyssat 871
void obj_interlace(objparm *pm)
872
{
12473 bpr 873
  gdImageInterlace(image,1);
10 reyssat 874
}
875
 
7675 bpr 876
/* set linewidth */
10 reyssat 877
void obj_linewidth(objparm *pm)
878
{
12473 bpr 879
  if(pm->pd[0]<1 || pm->pd[0]>255) fly_error("bad_parms");
17574 bpr 880
  width=pm->pd[0];
881
  if(tikz_file) fprintf(tikz_file,"\\pgfsetlinewidth{%f}\n",width*0.7);
10 reyssat 882
}
883
 
8414 bpr 884
/* set crosshairsize */
885
void obj_crosshairsize(objparm *pm)
886
{
12473 bpr 887
  if(pm->pd[0]<1 || pm->pd[0]>255) fly_error("bad_parms");
888
  else width2=pm->pd[0];
8414 bpr 889
}
890
 
7675 bpr 891
/* set x range */
10 reyssat 892
void obj_xrange(objparm *pm)
893
{
12473 bpr 894
  double dd;
895
  dd=pm->pd[1]-pm->pd[0];
896
  xstart=pm->pd[0]; xscale=sizex/dd;
10 reyssat 897
}
898
 
7675 bpr 899
/* set y range */
10 reyssat 900
void obj_yrange(objparm *pm)
901
{
12473 bpr 902
  double dd;
903
  dd=pm->pd[1]-pm->pd[0];
904
  ystart=pm->pd[1]; yscale=-sizey/dd;
10 reyssat 905
}
906
 
7675 bpr 907
/* set x et y range */
10 reyssat 908
void obj_range(objparm *pm)
909
{
12473 bpr 910
  double d1,d2;
911
  d1=pm->pd[1]-pm->pd[0]; d2=pm->pd[3]-pm->pd[2];
912
  xstart=pm->pd[0]; xscale=(sizex-1)/d1;
913
  ystart=pm->pd[3]; yscale=-(sizey-1)/d2;
10 reyssat 914
}
915
 
7675 bpr 916
/* set t range */
10 reyssat 917
void obj_trange(objparm *pm)
918
{
12473 bpr 919
  /*double dd;
920
  dd=pm->pd[1]-pm->pd[0];*/
921
  tstart=pm->pd[0]; tend=pm->pd[1];
922
  tranged=1;
10 reyssat 923
}
924
 
7675 bpr 925
/* set tstep (plotting step) */
10 reyssat 926
void obj_tstep(objparm *pm)
927
{
12473 bpr 928
  int dd;
929
  dd=pm->pd[0];
930
  if(dd<3) {
931
    fly_error("bad_step"); return;
932
  }
933
  if(dd>2000) dd=2000;
934
  tstep=dd;
10 reyssat 935
}
936
 
7675 bpr 937
/* set plotjump (plot jump break threashold) */
10 reyssat 938
void obj_plotjump(objparm *pm)
939
{
12473 bpr 940
  int dd;
941
  dd=pm->pd[0];
942
  if(dd<3) dd=3;
943
  if(dd>MAX_SIZE) dd=MAX_SIZE;
944
  plotjump=dd;
10 reyssat 945
}
946
 
7675 bpr 947
/* plot a curve, either parametric or explicit */
6578 bpr 948
void _obj_plot(objparm *pm,int dash)
10 reyssat 949
{
12473 bpr 950
  int i,j,n,dist,xx,yy,varpos;
951
  char p1[MAX_LINELEN+1], p2[MAX_LINELEN+1];
952
  char *varn, *pp;
953
  double dc[2],t,v;
954
  int ic[2],oc[2];
10 reyssat 955
 
12473 bpr 956
  n=itemnum(pm->str);
957
  if(n<1) {
958
    fly_error("bad_parms"); return;
959
  }
960
  fnd_item(pm->str,1,p1); fnd_item(pm->str,2,p2);
961
  if(n==1 && !tranged) v=sizex/xscale/tstep;
962
  else v=(tend-tstart)/tstep;
963
  if(n==1) varn="x"; else varn="t";
964
  for(pp=varchr(p1,varn); pp; pp=varchr(pp,varn)) {
965
    string_modify(p1,pp,pp+strlen(varn),EV_T);
966
    pp+=strlen(EV_T);
967
  }
968
  for(pp=varchr(p2,varn); pp; pp=varchr(pp,varn)) {
969
    string_modify(p2,pp,pp+strlen(varn),EV_T);
7675 bpr 970
      pp+=strlen(EV_T);
12473 bpr 971
  }
972
  varpos=eval_getpos(EV_T);
973
  if(varpos<0) return; /* unknown error */
974
  evalue_compile(p1); evalue_compile(p2);
975
  if(vimg_enable) vimg_plotstart();
976
  for(i=j=0;i<=tstep;i++) {
977
    if(n==1) {
978
      if(tranged) t=tstart+i*v; else t=xstart+i*v;
979
      eval_setval(varpos,t); dc[0]=t; dc[1]=strevalue(p1);
10 reyssat 980
    }
17584 bpr 981
      else {
982
        t=tstart+i*v; eval_setval(varpos,t);
983
        dc[0]=strevalue(p1); dc[1]=strevalue(p2);
10 reyssat 984
    }
17584 bpr 985
      if(!isfinite(dc[0]) || !isfinite(dc[1])) ic[0]=ic[1]=-BOUND;
986
      else scale(dc,ic,1);
987
      if(vimg_enable) vimg_plot1 (scale_buf[0],scale_buf[1]);
988
      if(j==0) {
989
        gdImageSetPixel(image,ic[0],ic[1],pm->color[0]); j++;
990
        if (tikz_file)
991
          fprintf(tikz_file,
992
            "\\draw\[%s] (%i,%i) rectangle (%i,%i);\n",
993
            tikz_options(pm->color[0],1),ic[0],flip(ic[1]),ic[0]+1,flip(ic[1]+1));
994
       }
995
      else {
996
        xx=ic[0]-oc[0]; yy=ic[1]-oc[1];
997
        dist=sqrt(xx*xx+yy*yy);
998
        if(dist>0){
999
          if(dist>plotjump || dist==1) {
1000
            gdImageSetPixel(image,ic[0],ic[1],pm->color[0]);
1001
            if (tikz_file)
1002
              fprintf(tikz_file,
1003
                "\\draw\[%s] (%i,%i) rectangle (%i,%i);\n",
1004
                tikz_options(pm->color[0],1),ic[0],flip(ic[1]),ic[0]+1,flip(ic[1]+1));
1005
          }
1006
          }
1007
          else {
1008
            if ( dash==1)
1009
              gdImageDashedLine(image,oc[0],oc[1],ic[0],ic[1],pm->color[0]);
1010
            else
1011
              gdImageLine(image,oc[0],oc[1],ic[0],ic[1],pm->color[0]);
1012
            if (tikz_file)
1013
              fprintf(tikz_file,
1014
                "\\draw\[%s] (%i,%i) -- (%i,%i);\n",
1015
                tikz_options(pm->color[0],dash),oc[0],flip(oc[1]),ic[0],flip(ic[1]));
1016
 
1017
          }
1018
        }
12473 bpr 1019
    memmove(oc,ic,sizeof(oc));
1020
  }
1021
  if(vimg_enable) vimg_plotend();
10 reyssat 1022
}
1023
 
6578 bpr 1024
void obj_plot(objparm *pm) { _obj_plot( pm,0) ;}
1025
void obj_dplot(objparm *pm) { _obj_plot( pm,1) ; }
1026
 
7675 bpr 1027
/* set levelcurve granularity */
10 reyssat 1028
void obj_levelstep(objparm *pm)
1029
{
12473 bpr 1030
  int dd;
1031
  dd=pm->pd[0];
1032
  if(dd<1) return;
1033
  if(dd>16) dd=16;
1034
  lstep=dd;
10 reyssat 1035
}
1036
 
7675 bpr 1037
/* level curve */
10 reyssat 1038
void obj_levelcurve(objparm *pm)
1039
{
12473 bpr 1040
  char fn[MAX_LINELEN+1],tc[MAX_LINELEN+1];
1041
  int n,i;
1042
  double d;
1043
  leveldata *ld;
7615 bpr 1044
 
12473 bpr 1045
  ld=xmalloc(sizeof(leveldata)+16);
1046
  ld->xname="x"; ld->yname="y";
1047
  ld->xsize=sizex; ld->ysize=sizey; ld->datacnt=0;
1048
  ld->xrange[0]=xstart; ld->xrange[1]=sizex/xscale+xstart;
1049
  ld->yrange[0]=sizey/yscale+ystart; ld->yrange[1]=ystart;
1050
  ld->grain=lstep;
1051
  fnd_item(pm->str,1,fn); ld->fn=fn;
1052
  n=itemnum(pm->str);
1053
  if(n<=1) {ld->levelcnt=1; ld->levels[0]=0;}
1054
  else {
1055
    if(n>LEVEL_LIM+1) n=LEVEL_LIM+1;
1056
    for(i=0;i<n-1;i++) {
1057
      fnd_item(pm->str,i+2,tc);
1058
      d=strevalue(tc);
1059
      if(isfinite(d)) ld->levels[i]=d; else ld->levels[i]=0;
10 reyssat 1060
    }
12473 bpr 1061
    ld->levelcnt=n-1;
1062
  }
1063
  levelcurve(ld);
1064
  for(i=0;i<ld->datacnt;i++) {
1065
    gdImageSetPixel(image,ld->xdata[i],ld->ydata[i],pm->color[0]);
17584 bpr 1066
    if (tikz_file)
1067
      fprintf(tikz_file,
1068
        "\\draw\[%s] (%i,%i) rectangle (%i,%i);\n",
1069
        tikz_options(pm->color[0],1),ld->xdata[i],flip(ld->ydata[i]),ld->xdata[i]+1,flip(ld->ydata[i]+1));
12473 bpr 1070
  }
1071
  free(ld);
10 reyssat 1072
}
1073
 
7675 bpr 1074
/* set animation step */
10 reyssat 1075
void obj_animstep(objparm *pm)
1076
{
12473 bpr 1077
  animstep=pm->pd[0];
1078
  setvar("animstep",pm->pd[0]);
10 reyssat 1079
}
1080
 
7675 bpr 1081
/* Starts a line counting */
10 reyssat 1082
void obj_linecount(objparm *pm)
1083
{
12473 bpr 1084
  linecnt=pm->pd[0];
10 reyssat 1085
}
1086
 
7675 bpr 1087
/* marks end of execution */
10 reyssat 1088
void obj_end(objparm *pm)
1089
{
12473 bpr 1090
  fly_error("successful_end_of_execution");
10 reyssat 1091
}
1092
 
7675 bpr 1093
/* output */
10 reyssat 1094
void obj_output(objparm *pm)
1095
{
12473 bpr 1096
  char *p, namebuf[1024];
1097
  p=find_word_start(pm->str); *find_word_end(p)=0;
1098
  snprintf(namebuf,sizeof(namebuf),"%s",imagefilename);
1099
  snprintf(imagefilename,sizeof(imagefilename),"%s",p);
1100
  output();
1101
  snprintf(imagefilename,sizeof(imagefilename),"%s",namebuf);
10 reyssat 1102
}
1103
 
7675 bpr 1104
/* vimgfile */
1024 bpr 1105
void obj_vimgfile(objparm *pm)
1106
{
12473 bpr 1107
  char *p;
1108
  p=find_word_start(pm->str); *find_word_end(p)=0;
1109
  snprintf(vimgfilename,sizeof(vimgfilename),"%s",p);
1110
  if(vimg_ready) vimg_close();
1024 bpr 1111
}
1112
 
7675 bpr 1113
/* vimg enable/disable */
1024 bpr 1114
void obj_vimg(objparm *pm)
1115
{
12473 bpr 1116
  vimg_enable=pm->pd[0];
1117
  if(vimg_enable>0 && vimg_ready==0) vimg_init();
1024 bpr 1118
}
1119
 
7675 bpr 1120
/* Set affine transformation */
10 reyssat 1121
void obj_affine(objparm *pm)
1122
{
12473 bpr 1123
  int i;
1124
  for(i=0;i<4;i++) matrix[i]=pm->pd[i];
1125
  transx=pm->pd[4]; transy=pm->pd[5];
1126
  transform=1;
10 reyssat 1127
}
1128
 
7675 bpr 1129
/* Set affine transformation */
10 reyssat 1130
void obj_rotation(objparm *pm)
1131
{
12473 bpr 1132
  double r;
1133
  r=M_PI*pm->pd[0]/180;
1134
  matrix[0]=matrix[3]=cos(r);
1135
  matrix[1]=-sin(r); matrix[2]=sin(r);
1136
  transform=1;
10 reyssat 1137
}
1138
 
8419 bpr 1139
/* Set linear transformation */
10 reyssat 1140
void obj_linear(objparm *pm)
1141
{
12473 bpr 1142
  int i;
1143
  for(i=0;i<4;i++) matrix[i]=pm->pd[i];
1144
  transform=1;
10 reyssat 1145
}
1146
 
8419 bpr 1147
/* Set translation transformation */
10 reyssat 1148
void obj_translation(objparm *pm)
1149
{
12473 bpr 1150
  transx=pm->pd[0]; transy=pm->pd[1];
10 reyssat 1151
}
1152
 
8419 bpr 1153
/* kill affine transformation */
10 reyssat 1154
void obj_killaffine(objparm *pm)
1155
{
12473 bpr 1156
  matrix[0]=matrix[3]=1;
1157
  matrix[1]=matrix[2]=transx=transy=0;
1158
  transform=0;
10 reyssat 1159
}
1160
 
8419 bpr 1161
/* kill affine transformation */
10 reyssat 1162
void obj_killlinear(objparm *pm)
1163
{
12473 bpr 1164
  matrix[0]=matrix[3]=1;
1165
  matrix[1]=matrix[2]=0;
1166
  transform=0;
10 reyssat 1167
}
1168
 
8419 bpr 1169
/* kill affine transformation */
10 reyssat 1170
void obj_killtranslation(objparm *pm)
1171
{
12473 bpr 1172
  transx=transy=0;
10 reyssat 1173
}
1174
 
1175
/***** Les modifs de Jean-Christophe Leger Fev 2006 *****/
1176
 
7615 bpr 1177
/* arguments: un numero de matrice entre 1 et JC_NB_MATRICES, une liste de 4 nombres reels pour la matrice */
10 reyssat 1178
void obj_setmatrix(objparm *pm)
1179
{
1180
  int nummatrix = (int) (pm->pd[0]);
1181
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1182
    fly_error("bad_matrix_number");
10 reyssat 1183
    return;
1184
  }
1185
  matrices_pavage[nummatrix][0] = pm->pd[1];
1186
  matrices_pavage[nummatrix][1] = pm->pd[2];
1187
  matrices_pavage[nummatrix][2] = pm->pd[3];
1188
  matrices_pavage[nummatrix][3] = pm->pd[4];
1189
}
1190
 
7615 bpr 1191
/* arguments: un numero de matrice entre 1 et JC_NB_MATRICES */
10 reyssat 1192
void obj_resetmatrix(objparm *pm)
1193
{
1194
  int nummatrix = (int) (pm->pd[0]);
1195
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1196
    fly_error("bad_matrix_number");
10 reyssat 1197
    return;
1198
  }
1199
  matrices_pavage[nummatrix][0] = 1;
1200
  matrices_pavage[nummatrix][1] = 0;
1201
  matrices_pavage[nummatrix][2] = 0;
1202
  matrices_pavage[nummatrix][3] = 1;
1203
 
1204
}
7615 bpr 1205
/* arguments: un numero de vecteur entre 1 et JC_NB_MATRICES, une liste de 2 nombres reels pour le vecteur */
10 reyssat 1206
void obj_setvector(objparm *pm)
1207
{
1208
  int nummatrix = (int) (pm->pd[0]);
1209
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1210
    fly_error("bad_vector_number");
10 reyssat 1211
    return;
1212
  }
1213
  vecteurs_pavage[nummatrix][0] = pm->pd[1];
1214
  vecteurs_pavage[nummatrix][1] = pm->pd[2];
1215
}
1216
 
7615 bpr 1217
/* arguments: un numero de matrice entre 1 et JC_NB_MATRICES */
10 reyssat 1218
void obj_resetvector(objparm *pm)
1219
{
1220
  int nummatrix = (int) (pm->pd[0]);
1221
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1222
    fly_error("bad_vector_number");
10 reyssat 1223
    return;
1224
  }
1225
  vecteurs_pavage[nummatrix][0] = 0;
1226
  vecteurs_pavage[nummatrix][1] = 0;
1227
}
1228
 
7615 bpr 1229
/* arguments: un numero de vecteur entre 1 et JC_NB_MATRICES, une liste de 6 nombres reels pour la matrice et le vecteur */
10 reyssat 1230
void obj_settransform(objparm *pm)
1231
{
1232
  int nummatrix = (int) (pm->pd[0]);
1233
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1234
    fly_error("bad_vector_number");
10 reyssat 1235
    return;
1236
  }
1237
  matrices_pavage[nummatrix][0] = pm->pd[1];
1238
  matrices_pavage[nummatrix][1] = pm->pd[2];
1239
  matrices_pavage[nummatrix][2] = pm->pd[3];
1240
  matrices_pavage[nummatrix][3] = pm->pd[4];
1241
  vecteurs_pavage[nummatrix][0] = pm->pd[5];
1242
  vecteurs_pavage[nummatrix][1] = pm->pd[6];
1243
}
1244
 
1245
 
7615 bpr 1246
/* arguments: un numero de matrice entre 1 et JC_NB_MATRICES */
10 reyssat 1247
void obj_resettransform(objparm *pm)
1248
{
1249
  int nummatrix = (int) (pm->pd[0]);
1250
  if((nummatrix < 1) ||(nummatrix>JC_NB_MATRICES)) {
8195 bpr 1251
    fly_error("bad_vector_number");
10 reyssat 1252
    return;
1253
  }
1254
  vecteurs_pavage[nummatrix][0] = 0;
1255
  vecteurs_pavage[nummatrix][1] = 0;
1256
  matrices_pavage[nummatrix][0] = 1;
1257
  matrices_pavage[nummatrix][1] = 0;
1258
  matrices_pavage[nummatrix][2] = 0;
1259
  matrices_pavage[nummatrix][3] = 1;
1260
}
1261
 
7615 bpr 1262
/* arguments: une liste de 6 nombres reels pour les coordonnees de l'origine et des vecteurs de base */
10 reyssat 1263
void obj_setparallelogram(objparm *pm)
1264
{
1265
  int i;
1266
  for(i=0;i<6;i++)  parallogram_fonda[i]=pm->pd[i];
1267
}
1268
 
1269
/* arguments :aucun */
1270
void obj_resetparallelogram(objparm *pm)
1271
{
1272
  parallogram_fonda[0]=0;
1273
  parallogram_fonda[1]=0;
1274
  parallogram_fonda[2]=100;
1275
  parallogram_fonda[3]=0;
1276
  parallogram_fonda[4]=0;
1277
  parallogram_fonda[5]=100;
1278
}
1279
 
1280
/* argument : la liste des numeros des matrices a faire agir, le nom du fichier de l'image a inclure */
1281
void obj_multicopy(objparm *pm)
1282
{
12473 bpr 1283
  char *pp,*pe,*cptr;
1284
  FILE *inf;
1285
  gdImagePtr insimg;
1286
  int i,j;
1287
  int imax,jmax;
1288
  int c; /* la couleur reperee */
1289
  int mat;
1290
  int nummatrices[JC_NB_MATRICES];
1291
  double pt[2]; /* les coordonnees math. du point repere dans le parallelogramme */
1292
  double ptr[2]; /* les coordonnees math. du point transforme */
1293
  int pti[2]; /* les coordonnees img du point a placer sur le canevas */
1294
  int t;
1295
  /* gestion palette de couleur de l'image a inserer */
1296
  int colorMap[gdMaxColors];
1297
  int comptmat=0; /* combien de matrices en tout ? */
7615 bpr 1298
 
12473 bpr 1299
  for (i=0; (i<gdMaxColors); i++) {
1300
    colorMap[i] = (-1);
1301
  }
10 reyssat 1302
 
12473 bpr 1303
  /* Gestion des parametres la liste est censee finir avec le nom du fichier */
1304
  t=pm->pcnt-1; /* il faut enlever le nom de fichier ! c'est le nombre de parametres en plus */
1305
  pp=find_word_start(pm->str);
1306
  /* visiblement find_word_start n'arrive pas a trouver le dernier mot dans un contexte ou le nombre de parameters est variable
10 reyssat 1307
     * on cherche donc l'emplacement de la derniere virgule:
1308
     * il y en a une car t>0, on retrouve ensuite le debut de mot
1309
     */
12473 bpr 1310
  for(pe=pp;*pe!=0;pe++);/* trouve la fin de la chaine */
1311
  if(t>0){
1312
    for(cptr = pe; cptr > pp && *cptr != ','; cptr--);
1313
    pp=find_word_start(cptr+1);
1314
  }
1315
  pe=find_word_end(pp);*pe=0; /* strip junk final */
1316
  //      printf("pp contient %s\n",pp);
10 reyssat 1317
 
1318
 
12473 bpr 1319
  inf=open4read(pp);
1320
  if(inf==NULL) {
1321
    fly_error("file_not_exist"); return;
1322
  }
1323
  insimg=gdImageCreateFromGif(inf); fclose(inf);
1324
  if(insimg==NULL) {
1325
    fly_error("bad_gif"); return;
1326
  }
10 reyssat 1327
 
12473 bpr 1328
  /* On recupere les numeros des matrices/vecteurs a faire agir,
1329
    * s'il n'y en a pas, on les fait toutes agir
1330
  */
1331
  for(i=0;i<t && i< JC_NB_MATRICES;i++) {
1332
    if(pm->pd[i]>=1 && pm->pd[i]<=JC_NB_MATRICES){
1333
      nummatrices[comptmat] = pm->pd[i];
1334
      comptmat++;
10 reyssat 1335
    }
12473 bpr 1336
  }
1337
  if(t<=0){
1338
    for(i=0;i<JC_NB_MATRICES;i++) {
1339
      nummatrices[i] = i+1;
10 reyssat 1340
    }
12473 bpr 1341
    comptmat=JC_NB_MATRICES;
1342
  }
10 reyssat 1343
 
7615 bpr 1344
 
12473 bpr 1345
  imax = gdImageSX(insimg);
1346
  jmax = gdImageSY(insimg);
10 reyssat 1347
 
12473 bpr 1348
  for(i=0;i<imax;i++){
1349
    for(j=0;j<jmax;j++){
1350
      int nc;
1351
      c=gdImageGetPixel(insimg,i,j);
1352
      /* Le code suivant est une copie du code dans gdImageCopy  Added 7/24/95: support transparent copies */
1353
      if (gdImageGetTransparent(insimg) != c) {
1354
        /* Have we established a mapping for this color? */
1355
        if (colorMap[c] == (-1)) {
1356
          /* If it's the same image, mapping is trivial, dans notre cas ca n'arrive jamais... */
1357
          if (image == insimg) {
1358
            nc = c;
1359
          } else {
1360
            /* First look for an exact match */
1361
            nc = gdImageColorExact(image,
1362
                   insimg->red[c], insimg->green[c],
1363
                           insimg->blue[c]);
1364
          }
1365
          if (nc == (-1)) {
1366
          /* No, so try to allocate it */
1367
            nc = gdImageColorAllocate(image,
1368
                             insimg->red[c], insimg->green[c],
7675 bpr 1369
                             insimg->blue[c]);
12473 bpr 1370
             /* If we're out of colors, go for the closest color */
1371
            if (nc == (-1)) {
1372
              nc = gdImageColorClosest(image,
7675 bpr 1373
                              insimg->red[c], insimg->green[c],
1374
                              insimg->blue[c]);
12473 bpr 1375
            }
1376
          }
1377
          colorMap[c] = nc;
1378
        }
10 reyssat 1379
 
12473 bpr 1380
        pt[0]= i*(parallogram_fonda[2])/(imax-1)+(jmax-j)*(parallogram_fonda[4])/(jmax-1)+parallogram_fonda[0];
1381
        pt[1]= i*(parallogram_fonda[3])/(imax-1)+(jmax-j)*(parallogram_fonda[5])/(jmax-1)+parallogram_fonda[1];
1382
        for(mat=0;mat<comptmat;mat++){
7675 bpr 1383
          double *matricecourante = matrices_pavage[nummatrices[mat]];
1384
          double *vecteurcourant = vecteurs_pavage[nummatrices[mat]];
1385
          ptr[0] = matricecourante[0]*pt[0]+matricecourante[1]*pt[1]+vecteurcourant[0];
1386
          ptr[1] = matricecourante[2]*pt[0]+matricecourante[3]*pt[1]+vecteurcourant[1];
1387
          scale(ptr,pti,1);
1388
          gdImageSetPixel(image,pti[0],pti[1],colorMap[c]);
12473 bpr 1389
        }
10 reyssat 1390
      }
1391
    }
12473 bpr 1392
  }
1393
  gdImageDestroy(insimg);
10 reyssat 1394
}
1395
 
1396
/**** Fin modifs JC Fev 06 ******/
1397
 
7675 bpr 1398
/* get color from value */
10 reyssat 1399
int calc_color(char *p, struct objtab *o)
1400
{
12473 bpr 1401
  int k, cc[3];
1402
  char buf[MAX_LINELEN+1];
1403
  for(k=0;k<3;k++) {
1404
    fnd_item(p,k+1,buf);
1405
    cc[k]=strevalue(buf);
1406
  }
1407
  collapse_item(p,3);
1408
  if(cc[0]==-1 && cc[1]==-1 && cc[2]==-255) {
10 reyssat 1409
 
12473 bpr 1410
    if(brushed && o->subst&1) return gdBrushed;
1411
    else return color_black;
1412
  }
1413
  if(cc[0]==-1 && cc[1]==-255 && cc[2]==-1) {
1414
    if(styled && o->subst&2)  return gdStyled;
1415
    else return color_black;
1416
  }
1417
  if(cc[0]==-255 && cc[1]==-1 && cc[2]==-1) {
1418
    if(tiled && o->fill_tag==1)  return gdTiled;
1419
    else return color_black;
1420
  }
1421
  return getcolor(cc[0],cc[1],cc[2]);
10 reyssat 1422
}
1423
 
7675 bpr 1424
/* Routine to parse parameters */
10 reyssat 1425
int parse_parms(char *p,objparm *pm,struct objtab *o)
1426
{
12473 bpr 1427
  char buf[MAX_LINELEN+1];
1428
  char *p1, *p2;
1429
  int j,t,c,c1,c2;
7615 bpr 1430
 
12473 bpr 1431
  c=o->color_pos;c1=c2=0;
1432
  pm->color[0]=pm->color[1]=0;
1433
  if(c>0) c1=c;
1434
  if(c<0) c2=-c;
1435
  c=c1+c2;
1436
  t=itemnum(p);if(t<o->required_parms+3*c) return -1;
1437
  if(c1>0 && t>o->required_parms+3*c) t=o->required_parms+3*c;
1438
  pm->pcnt=t-3*c;
1439
  if(pm->pcnt>MAX_PARMS) pm->pcnt=MAX_PARMS;
1440
  if(c2>0) {
1441
    for(j=0;j<2 && j<c2; j++) pm->color[j]=calc_color(p,o);
1442
  }
1443
  snprintf(buf,sizeof(buf),"%s",p);
1444
  for(j=0, p1=buf; j<pm->pcnt; j++, p1=p2) {
1445
    p2=find_item_end(p1); if(*p2) *p2++=0;
1446
    p1=find_word_start(p1);
1447
    if(*p1) pm->pd[j]=strevalue(p1); else pm->pd[j]=0;
1448
    if(!isfinite(pm->pd[j])) {
1449
        if(j<o->required_parms) return -1;
1450
        else {pm->pd[j]=0;break;}
10 reyssat 1451
    }
12473 bpr 1452
  }
1453
  collapse_item(p,o->required_parms);
1454
  if(c1>0) {
1455
    for(j=0;j<c1 && j<2; j++) pm->color[j]=calc_color(p,o);
1456
  }
1457
  if(width>1 && o->subst&1 && pm->color[0]!=gdBrushed
1458
      && pm->color[0]!=gdStyled && pm->color[0]!=gdTiled) {
1459
    pm->color[1]=pm->color[0];
1460
    pm->color[0]=widthcolor(width,pm->color[0]);
1461
  }
1462
  pm->fill=o->fill_tag;
1463
  ovlstrcpy(pm->str,p); return 0;
10 reyssat 1464
}
1465
 
8068 bpr 1466
/* Create the struct objparm pm corresponding to the objparm p
1467
 * Execute a command. Returns 0 if OK.
1468
 */
10 reyssat 1469
int obj_main(char *p)
1470
{
12473 bpr 1471
  int i;
1472
  char *pp,*name,*pt;
1473
  char tbuf2[MAX_LINELEN+1];
1474
  struct objparm pm;
10 reyssat 1475
 
12473 bpr 1476
  p=find_word_start(p);
1477
  if(*p==exec_prefix_char || *p==0) return 0; /* comment */
1478
  name=p;
1479
  pp=find_name_end(p);
1480
  pt=find_word_start(pp); if(*pt=='=') *pt=' ';
1481
  if(*pt==':' && *(pt+1)=='=') *pt=*(pt+1)=' ';
1482
  pp=find_word_end(p);
1483
  if(*pp!=0) {
1484
    *(pp++)=0; pp=find_word_start(pp);
1485
  }
1486
  if(strlen(p)==1 || (strlen(p)==2 && isdigit(*(p+1)))) {
1487
    setvar(p,strevalue(pp)); return 0;
1488
  }
1489
  /* search the number of the object */
1490
  i=search_list(objtab,obj_no,sizeof(objtab[0]),name);
1491
  if(i<0) {
1492
    fly_error("bad_cmd"); return 1;
1493
  }
1494
  if(image==NULL && (objtab[i].color_pos || objtab[i].required_parms>2)) {
1495
    fly_error("image_not_defined"); return 1;
1496
  }
1497
  ovlstrcpy(tbuf2,pp);
1498
  if(objtab[i].color_pos || objtab[i].routine==obj_setstyle) {
1499
    substit(tbuf2);
1500
  }
1501
  if(parse_parms(tbuf2,&pm,objtab+i)!=0) fly_error("bad_parms");
1502
  else objtab[i].routine(&pm);
1503
  return 0;
10 reyssat 1504
}