motorTargetAngularVelocity
The angular velocity at which the joint’s connected bodies should rotate around it.
Declaration
var motorTargetAngularVelocity: CGFloat { get set }Discussion
At the default value of 0.0, the joint moves only when an external force acts on one of its connected bodies. Changing this value causes the joint to act as a rotary motor, continuously applying a torque (specified by the motorMaximumTorque property) until its connected bodies are rotating around the joint at the new angular velocity.