"Micha Riser" <mri### [at] gmxnet> wrote in message
news:3d3ed209@news.povray.org...
> Christopher James Huff wrote:
> >
> > Another problem with this: transparent objects inside other transparent
> > objects, like a glass marble in a pool of water. It would also make the
> > pool of water more difficult.
>
> Well, it could still be done by cutting the space for the marble out of
the
> water. But with too many cuts out the performance gain would be lost.
>
> - Micha

Doing this, you essentially increase the number of surfaces as you can't
have coincidental surfaces.

-tgq

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