Component to drive blend shapes on a SkinnedMeshRenderer based on Face Tracking provided by OVRFaceExpressions.
Intended to be used as a base type that is inherited from, in order to provide mapping logic from blend shape indices. The mapping of OVRFaceExpressions.FaceExpression to blend shapes is accomplished by overriding OVRFace.GetFaceExpression(int). Needs to be linked to an OVRFaceExpressions component to fetch tracking data from.