private void doRotation(float dx,float dy){
  mRenderer.setSceneAngleX(dx * TOUCH_SCALE_FACTOR_ROTATION);
  mRenderer.setSceneAngleY(dy * TOUCH_SCALE_FACTOR_ROTATION);
}

private void doRotation ( float dx , float dy ) { mRenderer . setSceneAngleX ( dx * TOUCH_SCALE_FACTOR_ROTATION ) ; mRenderer . setSceneAngleY ( dy * TOUCH_SCALE_FACTOR_ROTATION ) ; }
do rotation ( plate rotation , not model rotation )
