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root/Development/ray/src/rt/ambcomp.c
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Comparing ray/src/rt/ambcomp.c (file contents):
Revision 2.97 by greg, Sat Jan 18 03:49:00 2025 UTC vs.
Revision 2.98 by greg, Thu Apr 24 01:43:58 2025 UTC

# Line 64 | Line 64 | ambcollision(                          /* proposed direciton collides? */
64          int     ii, jj;
65                                          /* min. spacing = 1/4th division */
66          cos_thresh = (PI/4.)/(double)hp->ns;
67 +        if (cos_thresh > 7.*PI/180.)    /* 7 degrees is enough in any case */
68 +                cos_thresh = 7.*PI/180.;
69          cos_thresh = 1. - .5*cos_thresh*cos_thresh;
70                                          /* check existing neighbors */
71          for (ii = i-1; ii <= i+1; ii++) {
# Line 127 | Line 129 | resample:
129                                  spt[1]*hp->uy[ii] +
130                                  zd*hp->onrm[ii];
131          checknorm(ar.rdir);
132 <                                        /* avoid coincident samples */
133 <        if (!n && hp->ns >= 4 && ambcollision(hp, i, j, ar.rdir)) {
132 >                                        /* avoid coincident samples? */
133 >        if (!n & (ambacc > FTINY) & (hp->ns >= 4) &&
134 >                        ambcollision(hp, i, j, ar.rdir)) {
135                  ss[0] = frandom(); ss[1] = frandom();
136                  goto resample;          /* reject this sample */
137          }

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