Come to think of it: if we only rotate one joint, and only on one axis - which is reasonable when making JCMs - it should be enough to have those three meshes. If I find enough points that were moved all the way, I can determine what that rotation was and then compare the movement of individual vertices in the posed actor and its parents with the full movement. That will tell me how each vertex was moved from the original to the posed position, so I'll be able to reverse that and thus reverse engineer my required morph.

That would be pretty neat because it would save me the effort of extracting information from Poser files.

I'd explain more, but I have a feeling this kind of topic is more of the 'special interests' kind. :biggrin:

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