CalcBoundBox Contains copy FromPos getEndPoint getLength getMidPoint getStartPoint Intersect Intersect IntersectAndContain isClosed LineSegment2D LineSegment2D LineSegment2D mEndPoint mStartPoint operator= operator== setEndPoint setStartPoint

setEndPoint() void setEndPoint ( const Base::Vector2d &  pt ) 设置终点 设置二维直线段的终点 参数 [in] pt 起点