public float getAngularFactor() {
        return rBody.getAngularFactor();
    }
sets the sleeping thresholds, these define when the object gets deactivated
to save resources. Low values keep the object active when it barely moves
@param linear the linear sleeping threshold
@param angular the angular sleeping threshold
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsRigidBody.java