MotorJoint constraining the angular velocities of two bodies
The equation for this constraint is:
(ratio * body2.angularVel) - body1.angularVel = rateThis constraint operates only on the velocities of objects.
Constructor
Variables
body1:Null<Body>
First Body in constraint.
This value may be null, but trying to simulate the constraint whilst
this body is null will result in an error.