Makes interesting shapes on the screen. Too bad PyGame's draw-polygon routine is non-antialiased, but it's maybe more interesting in that it uses the even-odd rule.
#!/usr/bin/python import pygame, math, random def main(): pygame.init() (w, h) = (1024, 768) screen = pygame.display.set_mode((w, h), pygame.FULLSCREEN) color = (255, 64, 64) center = (w/2, h/2) r = h/2 d_d_theta = math.pi / 70 d_theta = 0 npoints = 3 while 1: ev = pygame.event.poll() if ev.type == pygame.NOEVENT: screen.fill((0, 0, 0)) d_theta += d_d_theta / npoints if d_theta > 2 * math.pi: d_theta %= 2 * math.pi npoints += 1 pointslist = [(w/2 + r * math.sin(ii * d_theta), h/2 + r * -math.cos(ii * d_theta)) for ii in range(npoints)] pygame.draw.polygon(screen, color, pointslist) pygame.display.flip() if ev.type == pygame.MOUSEBUTTONDOWN: break elif ev.type == pygame.QUIT: break if __name__ == '__main__': main()