Tor Olav Kristensen <tor### [at] hotmailcom> wrote in message
news:3C86CF96.F364BECD@hotmail.com...

Looks good.
I played around with these surfaces the first time I saw them on a web page,
but Povray has NOT taught me any patience, so I only ever use very simple
isos for anything serious. I like the idea of having Povray build and create
curves and shapes for me based on only a few control points, but I don't
like the idea of waiting for my computer to perform the calculations every
time I render.

Turning these surfaces into a mesh is a good idea. Your technique can
probably be easily modified to build a surface around a cylinder, or one
that doubles back over itself, something which I don't believe is possible
with iso parametric surfaces.

 -Shay

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