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root/radiance/ray/src/rt/aniso.c
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Comparing ray/src/rt/aniso.c (file contents):
Revision 2.19 by greg, Wed May 20 11:01:40 1992 UTC vs.
Revision 2.20 by greg, Wed May 20 14:23:45 1992 UTC

# Line 163 | Line 163 | double  omega;                 /* light source size */
163                  } else
164                          dtmp = 0.0;
165                                                  /* gaussian */
166 <                dtmp = exp(-dtmp) * 1.0/(4.0*PI)
166 >                dtmp = exp(-dtmp) * 1.0/PI
167                                  * sqrt(-ldot/(np->pdot*au2*av2));
168                                                  /* worth using? */
169                  if (dtmp > FTINY) {

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