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

LineSegment2D() [2/3] LineSegment2D ( const LineSegment2D &  rclLine ) 构造二维直线段 基于相对线段，起点和终点 参数 [in] rclLine 相对线段 [in] startPoint 起点 [in] endPoint 终点