Question for .
First of all Hey from all of the UE4 developers in Israel 
Second, Can you please briefly describe the contact point between the physics system and animation system?
To clarify, I am looking at physics animation to understand how it is modifying bone rotations of a skeletal mesh so I could use that as an entry point for my Kinect plugin.
And last question: In what coordinate system the physics system modifies the skeletal mesh bone rotation?