Geometry Boost List: [geometry] Compute Normal in 3D

Subject: [geometry] Compute Normal in 3D
From: Jon Summers (j.summers_at_[hidden])
Date: 2014-01-29 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