Trevor G Quayle wrote:
> The mesh is generated
> internally by SDL. It specifically is made to generate a torus.  Each
> point position is calculated (depending on the determined mesh size)
> as well as the surface normal for the undeformed point.  The point is
> them deformed in the direction of the surface normal based on a
> deformation function (granite was used here).  New surface normals
> are then recalculated based on the new point location and the points
> in it's immediate proximity (i.e. four points: up, down, right and
> left) to give a fairly good and smooth result.

Note that this is pretty much what the hf_torus macro does which is included 
with POV-Ray 3.5. It's always more satisfying to do things from scratch 
though. :)

Rune
-- 
http://runevision.com

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