> On Thu, 3 Jan 2002 13:46:04 +0100, Johannes Bretscher <bre### [at] 5slorg> wrote:
>> Is it possible to delete some triangles from tihs mesh, i.e. to cut a hole
>> in the generatet surface?
> there is many ways to do it. it depend what your hole is and what your object is
> check clipped_by{}, bounded_by{}, difference{}, intersection{}

So CSG can be used with a mesh. That was the hint I needet. I thought
only solid objects are.

> you can be interested in
> http://news.povray.org/Xns915C94A8BA293seed7%40povray.org

Thanks for the link.

> 
> ABX

Johannes

-- 
#macro q(s)(s*s)#end union{#declare C=-1;#while(C<1)sphere{<512*(11*C-9)/q(121*C
*C-198*C+97)-4,4.22*(3-11*C)/(exp(C*11/4)+2.12)+11*C-8.5,20>.3}sphere{<4-.15*exp
(3.3*C),12/5-11*C/2,20>.3}sphere{4*<1-4*(q(C*C)-C*C),C+7/8,5>.3}sphere{<2*C-6,
7.5,20>.3}#declare C=C+.01;#end pigment{color x}}light_source{-4*x 1}

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