onRotateStart method

dynamic onRotateStart()

Implementation

onRotateStart() {
  if (enabled && enableRotate) {
    dispatchEvent(_startEvent);

    updateTbState(State2.zRotate, true);

    //_startFingerRotation = event.rotation;

    _startFingerRotation = getAngle(_touchCurrent[1], _touchCurrent[0]) + getAngle(_touchStart[1], _touchStart[0]);
    _currentFingerRotation = _startFingerRotation;

    camera.getWorldDirection(_rotationAxis); //rotation axis

    if (!enablePan && !enableZoom) {
      activateGizmos(true);
    }
  }
}