1startshape scene
2CF::Background = [b -1]
3CF::Size = [s 120]
4
5path rings {
6  loop i = 0.5,100 [] {
7    MOVETO(i, 0)
8    ARCTO(-i, 0, i)
9    ARCTO(i, 0, i)
10    CLOSEPOLY()
11    STROKE(.5)[]
12  }
13}
14
15shape scene {
16  rings [b 0.9 sat 1 alpha -0.5]
17  loop i = 1, rand_static(1, 3) [] {
18    rings [b 0.9 sat 1 alpha -0.5
19           x rand(-30,30) y rand(-30,30)]
20  }
21}
22