Micha Riser <mri### [at] gmxnet> wrote in news:3d3aec0d@news.povray.org

> I think we are talking of different things. With 'overlap' I do not
> mean that big parts of the *surface* overlap. Obviously this has
> undefined result. What happens if the objects have a partly common
> interior. Maybe csg intersection is better to make you clear what I
> mean: 
> intersection{
>   box{0,5 interior{ior 1.1}}
>   box{2,6 interior{ior 1.2}}
> }
> This results in a box{2,5} but what ior is used?

hmm... render it and see what's the result :) set one's ior to 1.001 and 
second to ior 2.0

btw. can You pleas NOT quote ENTIRE posts ? 

-- 
#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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