related to:

http://news.povray.org/povray.binaries.scene-files/thread/%3Cweb.57b4b6c879df8923b488d9aa0%40news.povray.org%3E/

octahedron and icosahedron models fully worked out.

Showing original polygon, and 1, 2, and 3 iterations of triangle subdivision (1
triangle --->  4 triangles)

Still trying to puzzle out the surface normal problem.

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