Tricky.长方形:0<=X<=A, 0<=Y<=B

来源: 于 2012-01-21 07:53:56 [旧帖] [给我悄悄话] 本文已被阅读：次

1)0<=X<=A/3,0<=Y<=B  2)3)1/3A<=X<2/3A:0<=Y<=1/2B;1/2B<=Y<=B  4)2/3A<=X<=A,0<=Y<=B.

turn 90 degree.