ABX <abx### [at] abxartpl> wrote in
news:amo72vsdloua9hc895825p54ljgthcmfva@4ax.com 

> 'builded automaticly' means probably tesselation process, are you
> aware how good tesselation is complicated? some methods are even
> patended! tesselation needs a lot of calculations, too.

But we don't need ideal tesselation. We will get object that +/- is a 
tesselation of isosurface, and then we will "inflate" this mesh, it would 
be hmm "bolder" or "more thick". Inflate will by by some size, that would 
be error_bound. Ofcourse this algoritm can produce error, because it is 
based on heuristics, like. i.e. radiosity.
 
> using 'trace' function you can get points _on_ isosurface but bounding
> requires surface _around_ isosurface. 

inflate

> moreover 'trace' sends ray to
> get intersection, so you probably will need more intersection tests
> with your 'optimization' than without.

save / load


-- 
#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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