Fabrik and two bone IK in VR

This animation project shows a UE mannequin (in pink, of course) looking at himself in the mirror. VR headset and motion controllers allow the user to move the arms and the whole upper body.

I used the FABRIK method to calculate the mobility of the chain of bones that goes from head to spine_01:

I actually disconnected the Idle animation though, because it is not symmetrical so it just looks quite weird.

Movement of hands and arms works with a two-bone IK:

Youtube link here

The project is based on Mitch McCaffrey's Unreal Engine VR cookbook.