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root/radiance/ray/src/rt/normal.c
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Comparing ray/src/rt/normal.c (file contents):
Revision 2.21 by greg, Wed May 20 14:23:47 1992 UTC vs.
Revision 2.22 by greg, Fri Oct 16 10:20:29 1992 UTC

# Line 24 | Line 24 | extern double  specthresh;             /* specular sampling thres
24   extern double  specjitter;              /* specular sampling jitter */
25  
26   /*
27 < *      This routine uses portions of the reflection
28 < *  model described by Cook and Torrance.
29 < *      The computation of specular components has been simplified by
30 < *  numerous approximations and ommisions to improve speed.
27 > *      This routine implements the isotropic Gaussian
28 > *  model described by Ward in Siggraph `92 article.
29   *      We orient the surface towards the incoming ray, so a single
30   *  surface can be used to represent an infinitely thin object.
31   *

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