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

getAngle1() double getAngle1 ( ) const 返回 The angle of the line (from start to endpoint).