src/gmxlib/writeps.c

   1 /*
   2  *
   3  *                This source code is part of
   4  *
   5  *                 G   R   O   M   A   C   S
   6  *
   7  *          GROningen MAchine for Chemical Simulations
   8  *
   9  *                        VERSION 3.2.0
  10  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  11  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  12  * Copyright (c) 2001-2004, The GROMACS development team,
  13  * check out http://www.gromacs.org for more information.
  14
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * If you want to redistribute modifications, please consider that
  21  * scientific software is very special. Version control is crucial -
  22  * bugs must be traceable. We will be happy to consider code for
  23  * inclusion in the official distribution, but derived work must not
  24  * be called official GROMACS. Details are found in the README & COPYING
  25  * files - if they are missing, get the official version at www.gromacs.org.
  26  *
  27  * To help us fund GROMACS development, we humbly ask that you cite
  28  * the papers on the package - you can find them in the top README file.
  29  *
  30  * For more info, check our website at http://www.gromacs.org
  31  *
  32  * And Hey:
  33  * GROningen Mixture of Alchemy and Childrens' Stories
  34  */
  35 #ifdef HAVE_CONFIG_H
  36 #include <config.h>
  37 #endif
  38
  39 #include <stdio.h>
  40 #include "futil.h"
  41 #include "gmx_fatal.h"
  42 #include "copyrite.h"
  43 #include "writeps.h"
  44 #include "smalloc.h"
  45 #include "gmxfio.h"
  46
  47 const char *fontnm[efontNR] = {
  48   "Times-Roman","Times-Italic",     "Times-Bold",    "Times-BoldItalic",
  49   "Helvetica",  "Helvetica-Oblique","Helvetica-Bold","Helvetica-BoldOblique",
  50   "Courier",    "Courier-Oblique",  "Courier-Bold",  "Courier-BoldOblique"
  51 };
  52
  53
  54 /* Internal psdata structure (abstract datatype)
  55  * to maintain the current state of the ps engine.
  56  */
  57 struct t_int_psdata  {
  58   FILE   *fp;
  59   int    maxrgb;
  60   int    nrgb;
  61   t_rgb  *rgb;
  62   real   gen_ybox;
  63   int    ostack;
  64 };
  65
  66
  67 t_psdata ps_open(const char *fn,real x1,real y1,real x2,real y2)
  68 {
  69   t_psdata ps;
  70
  71   snew(ps,1);
  72
  73   ps->fp=gmx_fio_fopen(fn,"w");
  74   fprintf(ps->fp,"%%!PS-Adobe-2.0 EPSF-1.2\n");
  75   fprintf(ps->fp,"%%%%Creator: GROMACS\n");
  76   fprintf(ps->fp,"%%%%Title: %s\n",fn);
  77   fprintf(ps->fp,"%%%%BoundingBox: %g %g %g %g\n",x1,y1,x2,y2);
  78   fprintf(ps->fp,"%%%%EndComments\n");
  79   fprintf(ps->fp,"/m {moveto} bind def\n");
  80   fprintf(ps->fp,"/l {lineto} bind def\n");
  81   fprintf(ps->fp,"/rm {rmoveto} bind def\n");
  82   fprintf(ps->fp,"/r  {rlineto} bind def\n");
  83   fprintf(ps->fp,"/f {fill} bind def\n");
  84   fprintf(ps->fp,"/s {stroke} bind def\n");
  85
  86   ps->nrgb=0;
  87   ps->maxrgb=0;
  88   ps->rgb=NULL;
  89   ps->gen_ybox=0;
  90   ps->ostack=0;
  91
  92   return ps;
  93 }
  94
  95 void ps_linewidth(t_psdata ps, int lw)
  96 {
  97   fprintf(ps->fp,"%d setlinewidth\n",lw);
  98 }
  99
 100 static void ps_defcolor(t_psdata ps,real r,real g,real b,char *cname)
 101 {
 102   fprintf(ps->fp,"/%s {%g %g %g setrgbcolor} bind def\n",cname,r,g,b);
 103 }
 104
 105 static void ps_selcolor(t_psdata ps,char *cname)
 106 {
 107   fprintf(ps->fp,"%s\n",cname);
 108 }
 109
 110 static int search_col(t_psdata ps,real r,real g,real b)
 111 {
 112   int  i;
 113   char buf[12];
 114
 115   for(i=0; (i<ps->nrgb); i++)
 116     if ((ps->rgb[i].r == r) && (ps->rgb[i].g == g) && (ps->rgb[i].b == b))
 117       return i;
 118
 119   if (ps->nrgb >= ps->maxrgb) {
 120     ps->maxrgb+=100;
 121     srenew(ps->rgb,ps->maxrgb);
 122   }
 123
 124   sprintf(buf,"C%d",ps->nrgb);
 125   ps_defcolor(ps,r,g,b,buf);
 126   fprintf(ps->fp,"/B%d {%s b} bind def\n",ps->nrgb,buf);
 127   ps->rgb[i].r=r;
 128   ps->rgb[i].g=g;
 129   ps->rgb[i].b=b;
 130   ps->nrgb++;
 131
 132   return (ps->nrgb-1);
 133 }
 134
 135 void ps_color(t_psdata ps,real r,real g,real b)
 136 {
 137   char buf[12];
 138   int i;
 139
 140   i=search_col(ps,r,g,b);
 141
 142   sprintf(buf,"C%d",i);
 143   ps_selcolor(ps,buf);
 144 }
 145
 146 void ps_rgb(t_psdata ps,t_rgb *rgb)
 147 {
 148   ps_color(ps,rgb->r,rgb->g,rgb->b);
 149 }
 150
 151
 152 void ps_init_rgb_nbox(t_psdata ps,real xbox, real ybox)
 153 {
 154   ps->gen_ybox=ybox;
 155   fprintf(ps->fp,"/by {def currentpoint "
 156           "%g y r %g %g r %g y neg r %g %g r f y add moveto} bind def\n",
 157           0.0,xbox,0.0,0.0,-xbox,0.0);
 158   /* macro bn is used in ps_rgb_nbox to draw rectangular boxes */
 159 }
 160
 161 void ps_rgb_nbox(t_psdata ps,t_rgb *rgb,real n)
 162 {
 163   int i;
 164
 165   if ( n>2 ) {
 166     ps_rgb(ps,rgb);
 167     fprintf(ps->fp,"/y %g by\n",n*ps->gen_ybox);
 168     /* macro by is defined in ps_init_rgb_nbox */
 169   } else
 170     for (i=0; (i<n); i++)
 171       ps_rgb_box(ps, rgb);
 172
 173 }
 174
 175 void ps_init_rgb_box(t_psdata ps,real xbox, real ybox)
 176 {
 177   fprintf(ps->fp,"/b {currentpoint "
 178           "%g %g r %g %g r %g %g r %g %g r f %g add moveto} bind def\n",
 179           0.0,ybox,xbox,0.0,0.0,-ybox,-xbox,0.0,ybox);
 180   /* macro b is used in search_col to define macro B */
 181 }
 182
 183 void ps_rgb_box(t_psdata ps,t_rgb *rgb)
 184 {
 185   fprintf(ps->fp,"B%d\n",search_col(ps,rgb->r,rgb->g,rgb->b));
 186   /* macro B is defined in search_col from macro b */
 187 }
 188
 189 void ps_lineto(t_psdata ps,real x,real y)
 190 {
 191   fprintf(ps->fp,"%g %g l\n",x,y);
 192 }
 193
 194 void ps_linerel(t_psdata ps,real dx,real dy)
 195 {
 196   fprintf(ps->fp,"%g %g r\n",dx,dy);
 197 }
 198
 199 void ps_moveto(t_psdata ps,real x,real y)
 200 {
 201   fprintf(ps->fp,"%g %g m\n",x,y);
 202 }
 203
 204 void ps_moverel(t_psdata ps,real dx,real dy)
 205 {
 206   fprintf(ps->fp,"%g %g rm\n",dx,dy);
 207 }
 208
 209 void ps_line(t_psdata ps,real x1,real y1,real x2,real y2)
 210 {
 211   ps_moveto(ps,x1,y1);
 212   ps_lineto(ps,x2,y2);
 213   fprintf(ps->fp,"s\n");
 214 }
 215
 216 static void do_box(t_psdata ps,real x1,real y1,real x2,real y2)
 217 {
 218   ps_moveto(ps,x1,y1);
 219   ps_linerel(ps,0,(real)(y2-y1));
 220   ps_linerel(ps,(real)(x2-x1),0);
 221   ps_linerel(ps,0,(real)(y1-y2));
 222   ps_linerel(ps,(real)(x1-x2),0);
 223 }
 224
 225 void ps_box(t_psdata ps,real x1,real y1,real x2,real y2)
 226 {
 227   do_box(ps,x1,y1,x2,y2);
 228   fprintf(ps->fp,"s\n");
 229 }
 230
 231 void ps_fillbox(t_psdata ps,real x1,real y1,real x2,real y2)
 232 {
 233   do_box(ps,x1,y1,x2,y2);
 234   fprintf(ps->fp,"f\n");
 235 }
 236
 237 void ps_arc(t_psdata ps,real x1,real y1,real rad,real a0,real a1)
 238 {
 239   fprintf(ps->fp,"%g %g %g %g %g arc s\n",x1,y1,rad,a0,a1);
 240 }
 241
 242 void ps_fillarc(t_psdata ps,real x1,real y1,real rad,real a0,real a1)
 243 {
 244   fprintf(ps->fp,"%g %g %g %g %g arc f\n",x1,y1,rad,a0,a1);
 245 }
 246
 247 void ps_arcslice(t_psdata ps,real xc,real yc,
 248                  real rad1,real rad2,real a0,real a1)
 249 {
 250   fprintf(ps->fp,"newpath %g %g %g %g %g arc %g %g %g %g %g arcn closepath s\n",
 251           xc,yc,rad1,a0,a1,xc,yc,rad2,a1,a0);
 252 }
 253
 254 void ps_fillarcslice(t_psdata ps,real xc,real yc,
 255                      real rad1,real rad2,real a0,real a1)
 256 {
 257   fprintf(ps->fp,"newpath %g %g %g %g %g arc %g %g %g %g %g arcn closepath f\n",
 258           xc,yc,rad1,a0,a1,xc,yc,rad2,a1,a0);
 259 }
 260
 261 void ps_circle(t_psdata ps,real x1,real y1,real rad)
 262 {
 263   ps_arc(ps,x1,y1,rad,0,360);
 264 }
 265
 266 void ps_font(t_psdata ps,int font,real size)
 267 {
 268
 269   if ((font < 0) || (font > efontNR)) {
 270     fprintf(stderr,"Invalid Font: %d, using %s\n",font,fontnm[0]);
 271     font=0;
 272   }
 273   fprintf(ps->fp,"/%s findfont\n",fontnm[font]);
 274   fprintf(ps->fp,"%g scalefont setfont\n",size);
 275 }
 276
 277 void ps_strfont(t_psdata ps,char *font,real size)
 278 {
 279   fprintf(ps->fp,"/%s findfont\n",font);
 280   fprintf(ps->fp,"%g scalefont setfont\n",size);
 281 }
 282
 283 void ps_text(t_psdata ps,real x1,real y1,const char *str)
 284 {
 285   ps_moveto(ps,x1,y1);
 286   fprintf(ps->fp,"(%s) show\n",str);
 287 }
 288
 289 void ps_flip(t_psdata ps,bool bPlus)
 290 {
 291   if (bPlus)
 292     fprintf(ps->fp,"612.5 0 translate 90 rotate\n");
 293   else
 294     fprintf(ps->fp,"-90 rotate -612.5 0 translate\n");
 295 }
 296
 297 void ps_rotate(t_psdata ps,real angle)
 298 {
 299   fprintf(ps->fp,"%f rotate\n",angle);
 300 }
 301
 302 void ps_ctext(t_psdata ps,real x1,real y1,const char *str,int expos)
 303 {
 304   if (expos == eXLeft) {
 305     ps_text(ps,x1,y1,str);
 306     return;
 307   }
 308   ps_moveto(ps,x1,y1);
 309   fprintf(ps->fp,"(%s) stringwidth\n",str);
 310   switch (expos) {
 311   case eXLeft:
 312     fprintf(ps->fp,"exch 0 exch pop exch\n");
 313     break;
 314   case eXCenter:
 315     fprintf(ps->fp,"exch 2 div neg exch\n");
 316     break;
 317   case eXRight:
 318     fprintf(ps->fp,"exch neg exch\n");
 319     break;
 320   default:
 321     gmx_fatal(FARGS,"invalid position index (expos=%d)",expos);
 322   }
 323   fprintf(ps->fp,"rmoveto (%s) show\n",str);
 324 }
 325
 326 void ps_translate(t_psdata ps,real x,real y)
 327 {
 328   fprintf(ps->fp,"%g %g translate\n",x,y);
 329 }
 330
 331 void ps_setorigin(t_psdata ps)
 332 {
 333   fprintf(ps->fp,"currentpoint dup 3 -1 roll dup 4 1 roll exch translate\n");
 334   ps->ostack++;
 335 }
 336
 337 void ps_unsetorigin(t_psdata ps)
 338 {
 339   if (ps->ostack <= 0)
 340     gmx_fatal(FARGS,"No origin on stack!\n");
 341   fprintf(ps->fp,"neg exch neg exch translate\n");
 342   ps->ostack--;
 343 }
 344
 345 void ps_close(t_psdata ps)
 346 {
 347   fprintf(ps->fp,"%%showpage\n");
 348   fprintf(ps->fp,"%%%%EOF\n");
 349   gmx_fio_fclose(ps->fp);
 350   sfree(ps->rgb);
 351   sfree(ps);
 352 }
 353
 354 void ps_comment(t_psdata ps,const char *s)
 355 {
 356   fprintf(ps->fp,"%%%% %s\n",s);
 357 }