封闭多边形面积计算并与房间号关联 先建立封闭多边形，再为为批量命名封闭多边形（将文字写入封闭多边形内）后，用此程序，获取各个封闭多边形的面积及已有命名。 -The seal polygon area computation and establishes the seal polygon first with the room number connection, then for (reads in after the batch naming seal polygon writing