Christopher James Huff <chr### [at] maccom> wrote in
news:chr### [at] netplexaussieorg 

> First, *it is not ISOsurface*! The word is "isosurface", the "iso"

> How do you propose to do this?

> One
> possible alternative would be to create a voxelfield of gradient
> values over the isosurface and use that for the gradient value...this

yes, and in addition :

> could use quite a bit of memory though, and add overhead which would
> just slow down other functions, so you would definitely want a way to
> turn it off. 

slow down ? no, why ? maybe in some rare cases. Idea is to use voxelfield, 
maybe optimized into set of boxes, in some examples it will work perfect, 
please wait just a minut, I will post a full example



-- 
#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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