# tk_circle_by_area.py

# tk_circle_by_area.py

import tkinter as tk
import math
from PIL import Image, ImageDraw, ImageTk

ww = hh = 200
cc = hh // 2

area = 500
radius = pow(area / math.pi, 0.5)
r = int(radius)

root = tk.Tk()
root.title("Circle By Area")

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

image = Image.new("RGB", (ww, hh), (255, 255, 255))
draw = ImageDraw.Draw(image)
draw.ellipse((cc - r, cc - r, cc + r, cc + r), fill=(255, 0, 0))

t = area + 1
radius += 1
while 1:
    pixel_colors = {}
    for x in range(cc - r, cc + r + 1):
        for y in range(cc - r, cc + r + 1):
            if (x - cc) ** 2 + (y - cc) ** 2 <= radius ** 2:
                pixel_color = image.getpixel((x, y))
                pixel_colors[(x, y)] = pixel_color

    photo = ImageTk.PhotoImage(image)
    canvas.create_image(0, 0, image=photo, anchor=tk.NW)

    t = len(pixel_colors.values())
    print(t, radius)
    if t >= area:
        radius -= 0.01
    else:
        break

    root.update()