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

> 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.

I perfectly realize that, which is why I was reffering to non contiguous 
surfaces and "any" (read: all) function.

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