clone copy Geometry getLength getType mType ~Geometry

copy() virtual Geometry * copy ( void  ) const pure virtual 在 ArcofCircle, ArcofEllipse, BezierCurve, BSplineCurve, Circle, Curve, Ellipse, Hatch, Hyperbola, Line, LineSegment, NURBSCurve, Parabola, Point , 以及 PolyLine 内被实现.