When initialized , the array pointed to by 在初始化時(shí),由
The array pointed to by 之后,由
In addition , if the last point and the first of the array point do not coincide , they specify the last side of the polygon 另外,如果數(shù)組的最后一個(gè)點(diǎn)和第一個(gè)點(diǎn)不重合,則這兩個(gè)點(diǎn)指定多邊形的最后一條邊。