Returns the normal for this triangle point as an SIVector3. Triangles that belong to the same polygon have the same normal values.
set root = application.activeproject.activescene.root
set obj = root.addgeometry( "Cube", "MeshSurface" )
set triangle = obj.activeprimitive.geometry.Triangles(0)
for each p in triangle.Points
logmessage "p.normal: " & p.normal.x & "," & p.normal.y & "," & p.normal.z
next
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