# tk_500x500_rgb_gel_ani.py

# tk_500x500_rgb_gel_ani.py

import tkinter as tk
import random
from PIL import Image, ImageTk, ImageFilter

ww = 500
hh = 500
cx = ww // 2
cy = ww // 2

root = tk.Tk()
root.title("tk_500x500_rgb_gel_ani")
root.geometry("%dx%d+%d+%d" %(ww, hh, 10, 10))

canvas = tk.Canvas(root, width=ww, height=hh)
canvas.pack()

colors = []
t = [z for z in range(0, 256, 15)]
for r in t:
    for g in t:
        for b in t:
            colors += [(r, g, b, 255)]
Lc = len(colors)

def generate(event=None):
    for size in layers:
        interpolate(size)
    draw()

def interpolate(size):
    global idx
    img = Image.new("RGBA", (size, size))
    pixels = img.load()
    for y in range(size):
        for x in range(size):
            color = colors.pop(idx**3)
            idx = (idx + 1) % 16
            pixels[x, y] = color
            colors.append(color)
    img = img.resize((ww+20, hh+20))
    layers[size] = img

def draw(event=None):
    buffer = Image.new("RGBA", (ww+20, hh+20), (255, 255, 255, 255))
    for size, layer_image in layers.items():
        buffer = Image.blend(buffer, layer_image, 400 / 1000.0)

    buffer = buffer.point(lambda x: x // 25 * 25)

    photo = ImageTk.PhotoImage(buffer)
    canvas.create_image(cx, cy, anchor=tk.CENTER, image=photo)
    canvas.image = photo
    canvas.update()
layers = {}

idx = 0
size = 8
for i in (512, 512):
    interpolate(size)
    size *= 2

while True:
    generate()
    idx += 1
root.mainloop()