In article <39E123D3.1C989ED3@hotmail.com>, Tor Olav Kristensen 
<tor### [at] hotmailcom> wrote:

> Why can I not define the function like this ?
> 
> function {
>   eval_pattern(bozo scale <1, 1, 1>/4, x + y + z)
> }
> 
> Please explain.

Because nobody has added the eval_pattern() function to isosurface 
functions yet. Oh, and it wouldn't be "x + y + z", it looks like you 
meant "x, y, z". :-)
The eval_pattern() function would probably be a little bit faster than a 
pigment function, and certainly easier to use, but I don't plan on 
trying to add it to isosurfaces until a MegaPOV based on POV 3.5 is 
released. Adding an isosurface function is a bit more complex than 
ordinary functions, and I want to wait until the isosurface code is 
cleaned up and organized better.

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

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