Generate randomly shaped polygons(namely, astroids)

astroid.py

import math
import random
import pygame

class Astroid:
    def __init__(self, points=5, radius=50,
            radius_range=10, angle_range=20):
        self.points = points
        self.radius = radius

        self.angles = [a * 360/points + random.randint(-angle_range, angle_range)
                for a in xrange(points)]

        self.p_distances_from_origin = \
                [random.randint(radius-radius_range, radius+radius_range)
                        for p in xrange(points)]

    def point_list(self, center=(0, 0)):
        return [(center[0]+p*math.cos(math.radians(d)),
                 center[1]+p*math.sin(math.radians(d)))
                 for (p, d) in zip(self.p_distances_from_origin, self.angles)]

    def rotate(self, angle):
        for i in xrange(len(self.angles)):
            self.angles[i] += angle
            self.angles[i] %= 360


if __name__ == "__main__":
    ticks = 0
    running = True

    screen = pygame.display.set_mode((300, 300), 0, 32)
    time = pygame.time.Clock()

    a = Astroid(points=10, radius_range=50)
    import pprint
    print "angles", a.angles
    print "p_distances", a.p_distances_from_origin
    pprint.pprint("point_list")
    pprint.pprint(a.point_list((100, 100)))

    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            elif event.type == pygame.MOUSEBUTTONDOWN:
                a = Astroid(points=10, radius_range=50)

        screen.fill((0, 0, 0))

        pygame.draw.polygon(screen, (255, 255, 255), a.point_list((100, 100)), 1)
        a.rotate(1)

        pygame.display.flip()
        ticks = time.tick(40)