Thanks, yes after playing with it for a bit, it seems pretty straightforward and works the way you’d expect it to work. Nice example with computing the pole vector - I was thinking a simple way could also be to position the PV control as if it were a child of the elbow (Daryl Obert from Maya had an example doing this with HumanIK baking to a custom rig). It doesn’t give a “true” pole vector position but it does bake the arm angle correctly.
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