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root/radiance/ray/src/rt/ambcomp.c
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Comparing ray/src/rt/ambcomp.c (file contents):
Revision 1.8 by greg, Thu Jun 13 13:58:24 1991 UTC vs.
Revision 1.10 by greg, Wed Jul 24 10:36:13 1991 UTC

# Line 72 | Line 72 | RAY  *r;
72          hlist[1] = dp->t;
73          hlist[2] = dp->p;
74          hlist[3] = 0;
75 <        zd = sqrt((dp->t+urand(ilhash(hlist,4)+dp->n))/h->nt);
75 >        zd = sqrt((dp->t+urand(urind(ilhash(hlist,4),dp->n)))/h->nt);
76          hlist[3] = 1;
77 <        phi = 2.0*PI * (dp->p+urand(ilhash(hlist,4)+dp->n))/h->np;
77 >        phi = 2.0*PI * (dp->p+urand(urind(ilhash(hlist,4),dp->n)))/h->np;
78          xd = cos(phi) * zd;
79          yd = sin(phi) * zd;
80          zd = sqrt(1.0 - zd*zd);
# Line 235 | Line 235 | RAY  *r;
235   {
236          register int  i;
237                                          /* set number of divisions */
238 <        hp->nt = sqrt(ambdiv * r->rweight * 0.5) + 0.5;
239 <        hp->np = 2 * hp->nt;
238 >        hp->nt = sqrt(ambdiv * r->rweight / PI) + 0.5;
239 >        hp->np = PI * hp->nt;
240                                          /* make axes */
241          VCOPY(hp->uz, r->ron);
242          hp->uy[0] = hp->uy[1] = hp->uy[2] = 0.0;

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