Marc-Hendrik Bremer wrote:
> 
> [...]
> I don't want to calculate the iso once and forever to use it in any given
> scene. I just thought it would be good to reuse isosurface calculations from
> one render in following once - just like radiosity data.
> Don't know. Perhaps it's total nonsense.

I have already thought about such possibilities, not so much about storing
intersection information but function values, but the whole thing is far
from being simple, for example the render result could depend on the
previously acquired data.

Another general speedup approach this idea could lead to is to use
previously calculated depth information to accelerate the render.  This
would not be limited to isosurface objects, but i'm not sure if this would
be very efficient.  Does anyone know if this has already been implemented
in a raytracer in the past?

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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