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root/radiance/ray/src/rt/ambient.c
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Comparing ray/src/rt/ambient.c (file contents):
Revision 2.91 by greg, Thu Jun 19 16:26:55 2014 UTC vs.
Revision 2.92 by greg, Fri Nov 21 00:30:11 2014 UTC

# Line 271 | Line 271 | static int     plugaleak(RAY *r, AMBVAL *ap, FVECT anorm,
271   static double   sumambient(COLOR acol, RAY *r, FVECT rn, int al,
272                                  AMBTREE *at, FVECT c0, double s);
273   static int      makeambient(COLOR acol, RAY *r, FVECT rn, int al);
274 < static void     extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv,
274 > static int      extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv,
275                                  FVECT uvw[3]);
276  
277   void
# Line 486 | Line 486 | sumambient(            /* get interpolated ambient value */
486                  /*
487                   *  Extrapolate value and compute final weight (hat function)
488                   */
489 <                extambient(ct, av, r->rop, rn, uvw);
489 >                if (!extambient(ct, av, r->rop, rn, uvw))
490 >                        continue;
491                  d = tfunc(maxangle, sqrt(delta_r2), 0.0) *
492                          tfunc(ambacc, sqrt(delta_t2), 0.0);
493                  scalecolor(ct, d);
# Line 537 | Line 538 | makeambient(           /* make a new ambient value for storage
538   }
539  
540  
541 < static void
541 > static int
542   extambient(             /* extrapolate value at pv, nv */
543          COLOR  cr,
544          AMBVAL   *ap,
# Line 567 | Line 568 | extambient(            /* extrapolate value at pv, nv */
568          
569          if (d <= 0.0) {
570                  setcolor(cr, 0.0, 0.0, 0.0);
571 <                return;
571 >                return(0);              /* should not use if we can avoid it */
572          }
573          copycolor(cr, ap->val);
574          scalecolor(cr, d);
575 +        return(1);
576   }
577  
578  

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