On Thu, 20 Jun 2002 12:28:17 -0500, "Skip Talbot" <sta### [at] uiucedu> wrote:
> That isn't a single in the center of the image, but a sphere divided into at
> least four parts with the parts being a different colored ambient.

Couldn't it be one sphere with one texture with pattern of ambients ?

ABX
-- 
disc{z,-z#macro O()asc(substr("-+((1*(,1,/.-,*/(,&.323/'1"e,1))*.1-4#declare
e=e-1;#end#local e=26;5pigment{#local g=function(_){ceil(_)-_}function#local
k=function{pattern{object{sphere_sweep{linear_spline 13#while(e)<O(),O()//35
>.01#end}}}}{k(g(atan2(x,y)),g(ln((y+x)^2+1e-5)),0)}}finish{ambient 1}}//ABX

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