Christopher James Huff wrote:
> 
> It does seem a very strange thing to do.

I found an application where this is reasonable.  When modeling
polygon meshes, one might want several triangles to appear as if they
were one face, even when they aren't co-planar.  Giving them a
different normal that is uniform across the face is the best way to
do this, but the optimization nukes that.  I learned this the hard
way while working on the new surface subidivsion macros.

Regards,
John

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