
Geometry : 
Subject: [geometry] Compute Normal in 3D
From: Jon Summers (j.summers_at_[hidden])
Date: 20140129 07:42:36
My application uses a 3D coordinate system. I want to compute a normal for
a model such as a ring. I don't see a property or algorithm that provides
computation of a normal. Have I missed something in my searches?
A ring would have to be planar to compute a normal, so a related question is
"If dimensionality is greater than 2, how do I determine that a model is
planar?"
Regards, Jon Summers
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