# Tk_rgb_automata.py

# Tk_rgb_automata.py

from Tkinter import *
from PIL import Image, ImageTk
from random import choice, randint, shuffle

COLORS = [  (255,0,0),
            (0,255,0),
            (0,0,255)]

Lc = len(COLORS)

def oRGB(rgb): # pass
    r,g,b = rgb
    return "#%02x%02x%02x" % (r,g,b)

ww = 500
hh = 500
root = Tk()
root.title("Tk_rgb_automata")
root.geometry("%dx%d+0+0"%(ww,hh))
canvas = Canvas(root, width=ww, height=hh)
canvas.grid()

limit = 5
RGB_BALANCE = []
LIMIT_BALANCE = [z%limit for z in range(ww)]

for color in COLORS:
    t = COLORS[:]
    t.remove(color)
    ttt = []
    for z in [color]+t:
        ttt.extend([z]*((ww/(Lc*2))))
    RGB_BALANCE.append(ttt)

img = Image.new("RGB",(ww, hh))

xScan = range(ww)
__yScan = [z%limit for z in range(ww+20)]

def by_yScan(count):
    yyy = yScan[:]
    rgb_bal = [z[:] for z in RGB_BALANCE]
    limit_bal = LIMIT_BALANCE[:]
    shuffle(limit_bal)
    #shuffle(xScan)
    for i in xScan:
        ttt = yyy[i:i+2]
        try:
            t,ccc = ddd[str(ttt)]
        except:
            if count:
                count -= 1
                ccc = ttt[1]%Lc
            else:
                ccc = randint(0,Lc-1)
            ddd[str(ttt)] = limit_bal.pop(), rgb_bal[ccc].pop(0)
            t = ddd[str(ttt)][0]

        if not randint(0,force):
            t = randint(0,limit)

        yScan[i+j%2] = t
        rgb.append(ccc)
    return count

while 1:
    force = 60
    yScan = __yScan[:]
    shuffle(yScan)
    count = int(ww*0.2)
    rgb = []
    ddd = {}
    for j in range(0, hh):
        count = by_yScan(count)
    img.putdata(rgb)
    imgTk = ImageTk.PhotoImage(img)
    canvas.create_image(0, 0, anchor=NW, image=imgTk)
    canvas.update()