Quote - One thing that's not present right now is normals for vertices.  Easy enough to generate using Python code, anyway.

Right.. we needed the face normals (and some sort of neighbor info) before doing vertex normal calcs, so we just hadn't reached that point yet.

Quote - The mapping of the polys to tris is very useful! 

I'm wondering: can I do += with your unary operations?  As below:...

To be frank, I was wondering about that and am not sure - let me know how that works out for you :) (it should either work, or cause and exception, so it's easy enough to test).  If it doesn't work, I have an idea of how to possibly implement it.

Cinema4D Plugins (Home of Riptide, Riptide Pro, Undertow, Morph Mill, KyamaSlide and I/Ogre plugins) Poser products Freelance Modelling, Poser Rigging, UV-mapping work for hire.