calculateBorders clone DxfDimDiametric DxfDimDiametric getDiameterPoint getLeader getMeasuredLabel m_DiameterPoint m_Leader move rotate updateDimension writeDxf ~DxfDimDiametric

clone() virtual DxfEntity * clone ( ) overridevirtual 纯虚函数, 拷贝对象 重载 DxfDimension .