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root/Development/ray/src/rt/raycalls.c
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Comparing ray/src/rt/raycalls.c (file contents):
Revision 2.11 by greg, Tue Apr 19 01:15:06 2005 UTC vs.
Revision 2.14 by greg, Wed Jun 15 15:36:52 2005 UTC

# Line 90 | Line 90 | static const char      RCSid[] = "$Id$";
90   */
91  
92   #include <string.h>
93 + #include <time.h>
94  
95   #include  "ray.h"
96   #include  "source.h"
# Line 118 | Line 119 | void   (*addobjnotify[8])() = {ambnotify, NULL};
119  
120   int     do_irrad = 0;                   /* compute irradiance? */
121  
122 + int     rand_samp = 0;                  /* pure Monte Carlo sampling? */
123 +
124   double  dstrsrc = 0.0;                  /* square source distribution */
125   double  shadthresh = .03;               /* shadow threshold */
126   double  shadcert = .75;                 /* shadow certainty */
# Line 163 | Line 166 | ray_init(                      /* initialize ray-tracing calculation */
166                  initotypes();
167                                          /* initialize urand */
168          initurand(2048);
169 +        srandom(rand_samp ? (long)time(0) : 0L);
170                                          /* read scene octree */
171          readoct(octname = otnm, ~(IO_FILES|IO_INFO), &thescene, NULL);
172          nsceneobjs = nobjects;
# Line 179 | Line 183 | ray_trace(                     /* trace a primary ray */
183   )
184   {
185          rayorigin(r, PRIMARY, NULL, NULL);
186 <        samplendx++;
186 >        samplendx = rand_samp ? random() : samplendx+1;
187          rayvalue(r);            /* assumes origin and direction are set */
188   }
189  

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