virtual vtkRenderer* GetRenderer();
virtual vtkRenderWindow* GetRenWin();
virtual void TransFromCoordScreenToWorld(double &X, double &Y, double &Z, bool keepNormalDirection=false,int type=2);
virtual vtkRenderer* GetRenderer();
virtual vtkRenderWindow* GetRenWin();
virtual void TransFromCoordScreenToWorld(double &X, double &Y, double &Z, bool keepNormalDirection=false,int type=2);