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104

answers:

1

What is the simplest algorithm for decomposing a quadrilateral into an arbitrary number of triangles?

+2  A: 

Probably midpoint triangle subdivision. Cut your quad into two triangles, then use the midpoints of each triangle edge as vertexes for four new triangles.

genpfault
A very simple and easy to implement tesselation system. Easy to do an arbitrary number of trinagles too. Keep subdividing until you have "n" triangles.
Goz