A constraint that transfers a rotation around one axis of a source.
See: https://github.com/vrm-c/vrm-specification/tree/master/specification/VRMC_node_constraint-1.0_beta#roll-constraint
The object being constrained by the source.
The object constrains the destination.
The weight of the constraint.
The roll axis of the constraint.
Set initial state of the constraint.
Update and apply the constraint.
A constraint that transfers a rotation around one axis of a source.
See: https://github.com/vrm-c/vrm-specification/tree/master/specification/VRMC_node_constraint-1.0_beta#roll-constraint