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root/Development/ray/src/rt/srcobstr.c
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Comparing ray/src/rt/srcobstr.c (file contents):
Revision 2.12 by greg, Tue Apr 19 01:15:07 2005 UTC vs.
Revision 2.13 by greg, Wed Jul 25 04:12:36 2007 UTC

# Line 19 | Line 19 | static const char RCSid[] = "$Id$";
19   #if  SHADCACHE                  /* preemptive shadow checking */
20  
21  
22 + OBJECT *        antimodlist = NULL;     /* set of clipped materials */
23 +
24 +
25   static int                              /* cast source ray to first blocker */
26   castshadow(int sn, FVECT rorg, FVECT rdir)
27   {
# Line 292 | Line 295 | srcblocker(register RAY *r)
295                  return(0);              /* don't record complex blockers */
296          if (r->rsrc < 0 || source[r->rsrc].so == r->ro)
297                  return(0);              /* just a mistake, that's all */
298 +        if (antimodlist != NULL && inset(antimodlist, r->ro->omod))
299 +                return(0);              /* could be clipped */
300          m = findmaterial(r->ro);
301          if (m == NULL)
302                  return(0);              /* no material?! */
# Line 320 | Line 325 | srcblocked(RAY *r)
325                  return(1);
326          rayclear(r);
327          return(0);                      /* source in front */
328 + }
329 +
330 +
331 + void                            /* record potentially clipped materials */
332 + markclip(OBJREC *m)
333 + {
334 +        OBJECT  *set2add, *oldset;
335 +
336 +        m_clip(m, NULL);                /* initialize modifier list */
337 +        if ((set2add = (OBJECT *)m->os) == NULL || !set2add[0])
338 +                return;
339 +
340 +        if (antimodlist == NULL) {      /* start of list */
341 +                antimodlist = setsave(set2add);
342 +                return;
343 +        }
344 +                                        /* else add to previous list */
345 +        oldset = antimodlist;
346 +        antimodlist = (OBJECT *)malloc((oldset[0]+set2add[0]+1)*sizeof(OBJECT));
347 +        if (antimodlist == NULL)
348 +                error(SYSTEM, "out of memory in markclip");
349 +        setunion(antimodlist, oldset, set2add);
350 +        free((void *)oldset);
351 + }
352 +
353 +
354 + #else   /* SHADCACHE */
355 +
356 +
357 + void                            /* no-op also avoids linker warning */
358 + markclip(OBJREC *m)
359 + {
360 +        (void)m;
361   }
362  
363  

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