# tk_500x500_rgb_cosmic_explosion.py

# tk_500x500_rgb_cosmic_explosion.py

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

ww = 500
hh = 500
cx = ww // 2
cy = ww // 2
p = 60

root = tk.Tk()
root.title("# tk_500x500_rgb_cosmic_explosion.py")
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 crop_center(img):
    w, h = img.size
    target_w, target_h = ww + 2, hh + 2
    left = (w - target_w) // 2
    top = (h - target_h) // 2
    right = left + target_w
    bottom = top + target_h
    return img.crop((left, top, right, bottom))

alpha = 255 / 40
black_image = Image.new('RGBA', (ww+p, hh+p), (0, 0, 0))
def zoom():
    global image_a, image_b
    for i in range(1, 45):
        image_a = crop_center(image_a)
        image_a = image_a.resize((ww+p, hh+p), Image.BICUBIC)
        image_a = image_a.filter(ImageFilter.GaussianBlur(1.0))
        image_a = image_a.point(lambda x: x // 15 * 15)

        img = Image.blend(image_a.convert("RGBA"), black_image, max(0, i - 30) * 0.05)
        plot(img)

    image_a, image_b = image_b, generate_new_image()

def generate_new_image():
    global idx
    size = 8
    buffer = 0
    for blur in (400, 400, 400, 400):
        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+p, hh+p))
        size *= 2
    return img

def plot(buffer):
    rgb_image = buffer.convert('RGB')
    photo = ImageTk.PhotoImage(rgb_image)
    canvas.create_image(cx, cy, anchor=tk.CENTER, image=photo)
    canvas.image = photo
    canvas.update()

t=50
mask = Image.new('L', (ww+p, hh+p), 0)
draw = ImageDraw.Draw(mask)
for i in range(0, min(ww+p, hh+p) // 2, 10):
    draw.rectangle([i, i, ww+p - i, hh+p - i], fill=i*255//((min(ww+p, hh+p) // 2)+1))
mask_size = (ww+p, hh+p)

idx = 0
image_a, image_b = [generate_new_image() for i in '..']

while True:
    zoom()
    idx += 1