worldyh.txt

这是书上的代码

8
0,	1,	-12.872340,	-14.276596
1,	1,	12.404255,	-14.276596
2,	1,	2.574468,	-5.382979
3,	1,	-40.723404,	0.234043
4,	1,	0.000000,	0.000000
5,	1,	-4.212766,	34.170212
6,	1,	35.574467,	49.148937
7,	1,	35.574467,	1.638298
4
0
0,	0,	1,	120.000000,	2,	120,	0
0
1,	2,	3,	120.000000,	2,	120,	0
0
2,	4,	5,	120.000000,	2,	120,	0
0
3,	6,	7,	120.000000,	2,	120,	0