Surfed around a bit more.

Looks like some of the code out there has checks for degenerate objects, so a
degenerate triangle check / flag / excision might be a good feature.

Just going to plop these here as a historical record (some are looking quite
old) and perhaps to inspire some ideas.

A sphere-and-cylinder wireframe representation would be a great adaptation too.

I'm not sure how the mesh2 code works under the hood, but I'm wondering if a
vertex-order checking needs to be done to ensure the proper ordering of the
vertices so that the face normals are in the correct direction.

https://wiki.povray.org/content/User:Le_Forgeron/HgPovray38

https://gist.github.com/monkstone/1639360

https://www.ks.uiuc.edu/Research/vmd/doxygen/POV3DisplayDevice_8C-source.html

http://jmsoler.free.fr/util/blenderfile/fr/povanim_Mesh2_en.htm

http://jgrimbert.free.fr/pov/patch/tessel/index.html

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