In article <3f5e3bb5@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

> None <Non### [at] onca> wrote:
> > The difficulty with isosurfaces is that they are functions and don't 
> > necessarily present an actual contiguous surface.  A tessellation routine 
> > that can handle any isosurface function would be very difficult, next to 
> > impossible.
> 
>   Actually tesselating a contiguous and derivable (read: smooth) isosurface
> (which most are) is perfectly possible and not even too difficult. An
> algorithm like the marching triangles is perfectly suitable.

But POV isosurface functions are not necessarily derivable, or even 
contiguous.

-- 
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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