I am sure something like this has been answered here but I’m not sure how to phrase my search.
So lets say I have an IK arm control that was originally oriented so the X axis pointed up at the shoulder, the Y axis pointed at the ground, and Z pointed forward. I then change the control so X points at the fingers, Y is up and Z still points forward. How would I calculate the offset between the new control and the original? I would like a position and rotation offset which could then be applied to an animation. I am trying to use MVector, but I can’t get exactly what I’m looking for.