I'm going to time this method tonight against <get_x, get_y, get_z> and
macro.
I will post the results tomorrow.

I understand why you are scaling the results to an appropriate range for the
color map, but is it really necessary. Can a pigment function not return
values greater than 1 for a hue? I know that Povray will accept {rgb
<100,30,80>} or even {rgb <-1,-1,-1>}. Does a pigment function behave
differently? I will test this tonight.



 -Shay

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