Here's my latest code. It needs some testing and cleaning up, but basically it works. That test scene I posted the other day (Antonia in beach volleyball outfit) takes around 3 seconds to export on my 2-year-old Toshiba laptop. I think that's acceptable speed; the same order of magnitude that Poser or Lux need to load the scene, anyway.

-- I'm not mad at you, just Westphalian.