Hi folks,
Haven't been here in a bit. Hoping someone can help, as this seems like a daunting one.
I received MoCap data made in Motion Builder, retargeted onto a BVH Characterized FBX Rig. But the positions and alignments between the rig joints aren't exact, and the MoCap Tech says the fine tuning tools in MB just aren't fixing them.
So once the MoCap data makes it finally to Biped,what we're getting is position-drifting of say, the bip, e.g., whenever a nearby joint like the hip is rotating. The figure is sitting/lying down, and a given rotational value in a hip joint will send the bip itself orbiting downwards and forwards, penetrating the ground plane considerably.
It's consistent across every MoCap clip; one joint's motion seems to affect the other, like ice-skaters in a fistfight. There are other anomalies; shoulder rotation discrepancies, etc., but the hockey fight analogy is probably the best clue toward a cause.
We can't be the first to encounter this pitfall, (surely) so I'm hoping someone with a bigger Max brain than I knows of some plugin to overcome this initial alignment issue which is eventually cascading down into 3DS Max. (we're locked into using version 8.0) Settings during bip import, other than default, perhaps?
Would greatly appreciate any suggestions, links, or voodoo spells to help me out. Many many thanks.
-Squiddy