[Radiance-general] adding color pattern

[bei.xiao at gmail.com]

hi,
  I want to generate a pool-ball like object. Basically, instead of
having a uniform colored object, I want to add some other color to the
object but the object is made of uniform material. Can I generate a
.cal file and directly manipulate the color at specific location using
local coordinates and use colorFunc to add the pattern? It sounds
trival to do but I m having trouble generating it right. Thank you
very much.

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