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root/radiance/ray/src/rt/ambcomp.c
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Comparing ray/src/rt/ambcomp.c (file contents):
Revision 2.77 by greg, Fri Apr 21 16:07:29 2017 UTC vs.
Revision 2.79 by greg, Tue Jan 9 00:52:35 2018 UTC

# Line 646 | Line 646 | ambcorral(AMBHEMI *hp, FVECT uv[2], const double r0, c
646          FVECT           vec;
647          double          u, v;
648          double          ang, a1;
649 +        OBJREC          *m;
650          int             i, j;
651                                          /* don't bother for a few samples */
652          if (hp->ns < 8)
# Line 674 | Line 675 | ambcorral(AMBHEMI *hp, FVECT uv[2], const double r0, c
675                  for (a1 = ang-ang_res; a1 <= ang+ang_res; a1 += ang_step)
676                          flgs |= 1L<<(int)(16/PI*(a1 + 2.*PI*(a1 < 0)));
677              }
677 –                                        /* add low-angle incident (< 20deg) */
678 –        if (fabs(hp->rp->rod) <= 0.342) {
679 –                u = -DOT(hp->rp->rdir, uv[0]);
680 –                v = -DOT(hp->rp->rdir, uv[1]);
681 –                if ((r0*r0*u*u + r1*r1*v*v) > hp->rp->rot*hp->rp->rot) {
682 –                        ang = atan2a(v, u);
683 –                        ang += 2.*PI*(ang < 0);
684 –                        ang *= 16/PI;
685 –                        if ((ang < .5) | (ang >= 31.5))
686 –                                flgs |= 0x80000001;
687 –                        else
688 –                                flgs |= 3L<<(int)(ang-.5);
689 –                }
690 –        }
678          return(flgs);
679   }
680  

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