virtual void MoveContour(int x, int y, int z);
virtual void MoveContour(int horizontalUnits, int verticalUnits );
virtual void GetMinMax( double &minX,double &minY, double &minZ, double &maxX, double &maxY, double &maxZ );
virtual void MoveContour(int x, int y, int z);
virtual void MoveContour(int horizontalUnits, int verticalUnits );
virtual void GetMinMax( double &minX,double &minY, double &minZ, double &maxX, double &maxY, double &maxZ );