hi,

when i try to render a certain triangle mesh i always get very strange
artifacts, like on the pictures at

www.geometrie.tuwien.ac.at/grohs/povray/mould1.bmp
and
www.geometrie.tuwien.ac.at/grohs/povray/mould2.bmp

this only happens with a certain kind of triangle mesh (discrete moulding
surfaces exported from matlab), but there seem to be no multiple points in
the mesh and the  normal vectors seem to be correct.

I really have no idea what the problem is, maybe the numerical accuracy that
povray is handling the data with is not high enough, but i think it's
something else.

thanks for your help,

philipp

btw.: if you want to take a look at the include file, it's on
www.geometrie.tuwiena.ac.at/povray/surface.inc

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