Hi,

a newbie question:


I want to create objects, where I want to calculate the r,g,b and
transparency values of the pigment rgb color with self written functions.

Unfortunately, I could not find a way to declare this. Whatever I try,
povray does not accept it as correct. It looks as if the povray language
is not really orthogonal.

How would I achieve to have texture where all four channels (rgbt) are
calculated with function?

Is this restricted to 1-dimensional calculations and mapping with a
color map?

regards
Hadmut

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