<p>Some suggested using a secondary vector to compare the angle between the secondary and the generated normal. If greater than 90, or less than, that would tell me if the normal vector is facing the direction I need. But I don't think this works for concave (NOTE: I originally wrote "CONVEX". I meant "CONCAVE". :\) shapes (normals can face toward origin, allowing for angles less than 90 degrees when compared with a vector drawn from the origin of object.</p>
Edited by JoryRFerrell, 07 March 2013 - 08:53 PM.