In article <web.3f11d967e9867461c0e4f1850@news.povray.org> , "Paul Khuong"
<p v k s p a m### [at] pvkremoveobviousca> wrote:

> instead of reparsing
> everything (if that isn't done already)?

What makes you believe isosurface functions need to be parsed every time
they are evaluated?  Did you try to find out more about isosurfaces before
speculating how they work? - You really should, it will save you lots of
time!  I would recommend to read the many threads about isosurfaces you find
in these newsgroups to find out more.  They contain tons of useful
information.

There is no general answer how fast a scene with isosurfaces will be.  You
have to make the scene and test it.  It depends on so many factors, there is
no general answer.

    Thorsten

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