input transformations

[Keith Packard]

On Mon, 2007-02-05 at 09:07 -0700, Brian Paul wrote:

> I think a trimesh is fine.  In fact, it helps deal with one potential 
> problem with a quadmesh: non-planar vertices.  If you happen to have a 
> quad whose vertices don't all lie in the same plane, interpolating or 
> computing the parameters for a point inside the quad is troublesome.

Yeah, true 'nuf. I suppose trimesh will work; we expect windows to be
planar most of the time anyway.

-- 
keith.packard at intel.com
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