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Comparing ray/src/rt/ambcomp.c (file contents):
Revision 2.78 by greg, Tue Jan 9 00:51:51 2018 UTC vs.
Revision 2.80 by greg, Wed Apr 11 17:05:59 2018 UTC

# Line 20 | Line 20 | static const char      RCSid[] = "$Id$";
20   #include  "ray.h"
21   #include  "ambient.h"
22   #include  "random.h"
23 – #include  "source.h"
24 – #include  "otypes.h"
25 – #include  "otspecial.h"
23  
24   #ifndef OLDAMB
25  
# Line 649 | Line 646 | ambcorral(AMBHEMI *hp, FVECT uv[2], const double r0, c
646          FVECT           vec;
647          double          u, v;
648          double          ang, a1;
652 –        OBJREC          *m;
649          int             i, j;
650                                          /* don't bother for a few samples */
651          if (hp->ns < 8)
# Line 678 | Line 674 | ambcorral(AMBHEMI *hp, FVECT uv[2], const double r0, c
674                  for (a1 = ang-ang_res; a1 <= ang+ang_res; a1 += ang_step)
675                          flgs |= 1L<<(int)(16/PI*(a1 + 2.*PI*(a1 < 0)));
676              }
681 –                                        /* add low-angle incident (< 20deg) */
682 –        if (fabs(hp->rp->rod) <= 0.342 && hp->rp->parent != NULL &&
683 –                        (m = findmaterial(hp->rp->parent->ro)) != NULL &&
684 –                        isopaque(m->otype)) {
685 –                u = -DOT(hp->rp->rdir, uv[0]);
686 –                v = -DOT(hp->rp->rdir, uv[1]);
687 –                if ((r0*r0*u*u + r1*r1*v*v) > hp->rp->rot*hp->rp->rot) {
688 –                        ang = atan2a(v, u);
689 –                        ang += 2.*PI*(ang < 0);
690 –                        ang *= 16/PI;
691 –                        if ((ang < .5) | (ang >= 31.5))
692 –                                flgs |= 0x80000001;
693 –                        else
694 –                                flgs |= 3L<<(int)(ang-.5);
695 –                }
696 –        }
677          return(flgs);
678   }
679  

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