vicsek

from Tkinter import *
from functools import partial

def onCanvasClick(event,canvas,i):
    if i>4:
        canvas.create_rectangle(0,0,729,729, outline='black', fill='black')
        canvas.bind('<ButtonPress>', partial(onCanvasClick,canvas=canvas,i=0))
    else:
        vicsek(0,0,729,729,canvas,i+1)
        canvas.bind('<ButtonPress>', partial(onCanvasClick,canvas=canvas,i=i+1))
def vicsek(x1,y1,x2,y2,canvas,i):
    if i>0 :
        lx1=x1 + (x2-x1)/3
        lx2=x1 + 2*(x2-x1)/3
        ly1=y1 + (y2-y1)/3
        ly2=y1 + 2*(y2-y1)/3
        canvas.create_rectangle(x1,y1,lx1,ly1, outline='white', fill='white')
        canvas.create_rectangle(lx2,y1,x2,ly1, outline='white', fill='white')
        canvas.create_rectangle(x1,ly2,lx1,y2, outline='white', fill='white')
        canvas.create_rectangle(lx2,ly2,x2,y2, outline='white', fill='white')
        vicsek(lx1,y1,lx2,ly1,canvas,i-1)
        vicsek(x1,ly1,lx1,ly2,canvas,i-1)
        vicsek(lx1,ly1,lx2,ly2,canvas,i-1)
        vicsek(lx2,ly1,x2,ly2,canvas,i-1)
        vicsek(lx1,ly2,lx2,y2,canvas,i-1)

window = Tk()
window.title('Vicsek Fractal')
canvas = Canvas(window, width=729, height=729,bg='black')
canvas.pack()
i=0
vicsek(0,0,729,729,canvas,0)
canvas.bind("<ButtonPress>", partial(onCanvasClick,canvas=canvas,i=i))
window.mainloop()