Pyr### [at] shawca news:3fc875ac@news.povray.org

> I don't know why, but this image took 30 hours to render??

This is probably problem with bounding boxes, I quess that vista buffer 
and/or BB don't work very vell with differences (I quess You used 
differences of cones to create rings?)

Probably if You used mesh, or divide each ring into small sectors (each 
having own BB) that might help... BUT it's only imho.


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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