Wasn't it lars petter who wrote:
>thanks, we've gotten some basic knowledge on the isosurfaces now.
>    the problem is, they're only surfaces, not solid figures with a certain
>width, so we're wondering if there is a way to, e.g., extrude a parabola 2
>units, making it solid? that would've been smooth, he he. or do you see some
>other way?

I'm not sure if this is what you want, but there's a trick for creating
"thick" isosurfaces in my isosurface tutorial

<http://www.econym.demon.co.uk/isotut/substitute.htm#thick>

-- 
Mike Williams
Gentleman of Leisure

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