#!/usr/local/bin/cz --
use b

Main:
	space()
	origin(300, 300)

	int i = 0
	int r1 = sqrt(2) * 300
	repeat:
		for(o, 0, 20):
			if i < r1:
				++i
			clear()
			for(r, 0, i, 20):
				rainbow(r)
				circle(300, 300, r+o)
			white()
			for(x, o, 601, 20):
				line(x, 0, 600, x)
				line(600, x, 600-x, 600)
				line(600-x, 600, 0, 600-x)
				line(0, 600-x, x, 0)
			Paint()
			csleep(0.02)

#	line(8, 480,   60,80)