virtual void TransFromCoordScreenToWorld(double &X, double &Y, double &Z, bool keepNormalDirection=false, int type=2);
void SetVisibleAxis(bool ok);
virtual int GetDirection();
virtual void TransFromCoordScreenToWorld(double &X, double &Y, double &Z, bool keepNormalDirection=false, int type=2);
void SetVisibleAxis(bool ok);
virtual int GetDirection();