Thanks for all the comments.

Concerning the code for the image - as usual i am relucant to give an 
isosurface function without any explanation.  It is not designed for 
being understandable so i doubt it is of much use (the tutorial scenes i 
posted the link for are surely much more useful for a beginner).

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 2 Sep. 2003 _____./\/^>_*_<^\/\.______

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