Wasn't it Rafal 'Raf256' Maj who wrote:
>Hi,
>are there working tools to speedup isosurface render time (at cost of 
>parsing time) by tringulize them?

Take a look at Kevin Loney's Approximation Macro, and Jaap Frank's
faster modified version, which construct mesh2 objects that approximate
isosurfaces. In many cases, the total time required to parse and render
the approximation is greater than the time taken to render a real
isosurface, but there could well be situations where using the
approximation could be faster, for example if the same isosurface were
to appear in each frame of an animation it would only need to be parsed
once and then the data could be read from a file for all the subsequent
frames.

See <http://www.econym.demon.co.uk/isotut/approx.htm>

If you can recast your isosurface equation in parametric form, then you
can use Ingo Janssen's approximation macro which does run much faster
than the corresponding isosurface.

See <http://www.econym.demon.co.uk/isotut/param.htm>

-- 
Mike Williams
Gentleman of Leisure

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