# Tk_star_pattern.py

# Tk_star_pattern.py

from Tkinter import *
import math
import random
import time

root = Tk()

c_width = 600
c_height = 600
canvas = Canvas(root, width=c_width, height=c_height, bg='white')
canvas.pack()
starXY = [c_width/2,c_height/2]

def star_pattern(points, innerRadius, outerRadius):
    points *= 2
    segments = (math.pi * 2.0) / points
    radiusChoice = [innerRadius, outerRadius]
    star = []
    switch = [0,1]
    for point in range(points):
        r = radiusChoice[switch[-1]]
        omega = segments * point
        star.append(((r * -math.sin(omega)) + starXY[0], (r * -math.cos(omega)) + starXY[1]))
        switch += [switch.pop(0)]
    return star

wait = 0
while 1:
    outer = 270
    color = '#%02x%02x%02x' % (180, 0, 180)
    for points in range(3,30):
        for inner in range(20,min(240,100+points*3)):
            canvas.create_polygon(star_pattern(points,inner,outer), fill=color)
            #time.sleep(0.2)
            canvas.update()
            canvas.delete('all')