What I have:
The four bones inside the arm (
DEF_Arm_04) are being controlled by an IK constraint. The IK targets
Hand (selected) and goes up to the
DEF_Shoulder (not including it). The pole angle is controlled by
Elbow, floating behind the arm. The IK works as desired.
What I need:
DEF_Arm_04 to gradually follow/copy/otherwise propagate the roll of
How far did I get:
I added a Copy Rotation Constraint, Y only, from local space to local space on
Hand as target. It worked like a charm!
I realized I should do something similar to the other bones, adding two of these constraints to them (with
DEF_Shoulder as targets) and changing the influence of the second constraint accordingly, for each bone.
I tried this. I added a Copy Rotation to
DEF_Shoulder as target. No go.
It seems that, as the
DEF_Arm_04 has an IK constraint, it works as a stack and solves things in order, and the other ones are controlled by the IK and simply ignore other controls over their rotation and who knows what else. Also, I've tried to use an avulse bone as target, still no go.
So... What is one supposed to do to solve this?