In article <Xns### [at] 204213191226>,
 Tor Olav Kristensen <tor_olav_kCURLYAhotmail.com> wrote:

> I have an idea of how a sphere might be done with a single
> NURBS patch, but I have not had time to try it yet.

I recall reading that it is impossible to make a perfect sphere using 
NURBS. However, it is fairly trivial to make something that looks like a 
perfect sphere. There's just no reason to use NURBS for something as 
simple as a sphere.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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