Simple lissageous curves with pygame

lissageous.py

from math import cos, sin

import pygame

tela = pygame.display.set_mode((640, 480))


CX, CY = 320, 240


def lissageous(m=1, n=1, st=0.1, total=10000):
    counter = 0
    t = 0
    while counter < total:
        x = int(CX + 0.8 * CX * cos(m * t))
        y = int(CY + 0.8 * CY * sin(n * t))
        tela.set_at((x, y), (0, 0, 0))
        t += st; counter += 1
        if not counter % 100:
            pygame.display.flip()
    pygame.display.flip()


tela.fill((255,255,255))

lissageous(7, 4)

while not pygame.key.get_pressed()[pygame.K_ESCAPE]:
    pygame.time.delay(100)
    pygame.event.pump()

pygame.quit()

show!