In article <39E23003.454939EC@online.no>, Tor Olav Kristensen 
<tto### [at] onlineno> wrote:

> Ahh... I thought that any float expression would do. -Sorry.

Nope, there are a few functions which haven't been added yet.


> Has the added complexity anything to do with the derivatives
> of these iso-functions ?

No. The problem is that isosurface functions are processed in a 
completely different way from the rest of the POV Script language. They 
are saved in a data structure and evaluated during the rendering process 
to search for the isosurface intersections, instead of being executed at 
parse time.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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