@[lhb06](/user/1026526) 理解成线段吧
by zhangyuanxiao @ 2023-07-24 15:43:56
感谢
by lhb06 @ 2023-07-24 15:44:41
就是有 0 或 180 度的角
by zhangyuanxiao @ 2023-07-24 15:45:44
@[lhb06](/user/1026526) 
也许会帮到你。
by LittleAcbg @ 2023-07-24 15:51:39