How would I calculate the normals of triangles where a vertex may lay on the
edge of a triangle but not be at a corner? This ASCII art should clear up
the question:
___________
|\ /|
| \ B / |
| \ / |
| \ / |
| C X |
| / |
| / A |
| / |
|/________|
How would I calculate the normal at point X given triangles A, B, & C?
-Shay
