数学图形(2.10)一种绕在球上的线圈

这是我刚写完这个软件时,自己写的一个测试用例.

vertices = 3600
w = from 0 to 32
a = mod(w, 1) * 2 * PI
b = from 0 to PI
r = 10.0
x = r*sin(a)*sin(b)
y = r*cos(a)*sin(b)
z = r*cos(b)