calculateBorders clone DxfLine DxfLine getAngle1 getAngle2 getDirection1 getDirection2 getEndPoint getLineType getMiddlePoint getStartPoint m_EndPoint m_LineType m_Scale m_StartPoint move rotate setEndPoint setLineType setScale setStartPoint writeDxf ~DxfLine

clone() virtual DxfEntity * clone ( ) overridevirtual 纯虚函数, 拷贝对象 实现了 DxfEntity. 被 DxfRay , 以及 DxfXline 重载.