void OnTrackingStateChanged(MRCameraTrackingState state)
        {
            switch (state)
            {
            case MRCameraTrackingState.Normal:
                m_TrackingWarning.SetActive(false);
                break;

            default:
                m_TrackingWarning.SetActive(true);
                break;
            }
        }
 static void TrackingTypeChanged(MRCameraTrackingState state)
 {
 }