# tk_Circular_Spiral_Fractal_Animation.py

# tk_Circular_Spiral_Fractal_Animation.py
import tkinter as tk
import math

WIDTH, HEIGHT = 300, 300
root = tk.Tk()
root.title("Circular Spiral Fractal Animation")
canvas = tk.Canvas(root, width=WIDTH, height=HEIGHT, bg='black')
canvas.pack()

rainbow = []
def z(r, g, b):
    rainbow.append(f'#{r:02x}{g:02x}{b:02x}')

r, g, b = 255, 0, 0
for g in range(256):
    z(r, g, b)
for r in range(254, -1, -1):
    z(r, g, b)
for b in range(256):
    z(r, g, b)
for g in range(254, -1, -1):
    z(r, g, b)
for r in range(256):
    z(r, g, b)
for b in range(254, -1, -1):
    z(r, g, b)

Lcolors = len(rainbow)
steps = (WIDTH/5) * (HEIGHT/5)
incr = 100 / steps

def circular_spiral_coords(width, height, step):
    cx, cy = width // 2, height // 2
    coords = []
    max_radius = math.sqrt(width**2 + height**2)
    num_points = int(max_radius / step * 360)
    a = 0.1
    b = 0.1
    for i in range(num_points):
        angle = a * i
        radius = b * angle
        x = (cx + radius * math.cos(angle)) // step * step
        y = (cy + radius * math.sin(angle)) // step * step
        if 0 <= x <= width and 0 <= y <= height:
            if (x, y) not in coords:
                coords.append((x, y))
    return coords

spiral_order = circular_spiral_coords(WIDTH, HEIGHT, 5)

pixels = {}
i = 0
for x, y in spiral_order:
    j = 50 + (i * incr)
    pixels[x, y] = [j, j]
    i += 1

while 1:
    canvas.delete("all")
    for x, y in spiral_order:
        i, j = pixels[x, y]
        j = (i + j) % Lcolors
        pixels[x, y] = [i, j]
        color = rainbow[int(j)]
        canvas.create_rectangle(x, y, x+5, y+5, fill=color, outline='')
    canvas.update()

root.mainloop()