"ingo" wrote:
> What if you give your object a very fine (high frequency) but relative
> steep triangular normal and match the pigment with it, to have both sides
> of the angle another colour.
>
>      /\
> red /  \ blue
>    /    \
>   /      \

This would only work if normals actually displaced surfaces, which they
don't. You will see equally much of both sides, regardless of from which
angle you see the object. It would work with an isosurface in theory, but I
don't know of any car-shaped functions.

Rune
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