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root/radiance/ray/src/rt/rayinit.cal
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Comparing ray/src/rt/rayinit.cal (file contents):
Revision 2.8 by greg, Thu Dec 9 16:56:28 1993 UTC vs.
Revision 2.9 by greg, Fri Aug 25 11:43:29 1995 UTC

# Line 24 | Line 24
24          RdotP                           - perturbed ray dot product
25          CrP, CgP, CbP                   - perturbed material color
26  
27 +        For prism1 and prism2 types, the following are available:
28 +
29 +        DxA, DyA, DzA                   - direction to target light source
30 +
31          Library functions:
32  
33          if(a, b, c)                     - if a positive, return b, else c

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