Alessandro Coppo wrote:
> 
> It came to me that displacement mapping is almost like isosurfaces. For
> example, a displacement mapped sphere is an isosurface described by
> a sphere + displacement function. So I would not call it impossible (or
> only for meshes) but "just" computationally heavy.
> 

I just want to mention that this is not really true, 'displacement' with
isosurfaces works much different than with meshes.  For example in your
sphere sample you can get separate surface parts with an isosurface while
this is impossible with displacement mapping.  

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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