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April 18, 2017 14:10
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Draw a Sierpinski triangle using the Chaos game algorithm
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| # draw a Sierpinski triangle using the Chaos game algorithm | |
| import random | |
| import tkinter as tk | |
| width = 640 | |
| height = 640 | |
| background_color = "#000000" | |
| foreground_color = "#ffffff" | |
| root = tk.Tk() | |
| root.resizable(0,0) | |
| canvas = tk.Canvas(root, width=width, height=height, bg=background_color) | |
| canvas.pack() | |
| img = tk.PhotoImage(width=width, height=height) | |
| canvas.create_image((width//2, height//2), image=img, state="normal") | |
| vertices = [(width//2,0),(0,height),(width,height)] | |
| current_position = (width//2, height//2) | |
| def draw(): | |
| global current_position | |
| x1, y1 = current_position | |
| x2, y2 = random.choice(vertices) | |
| current_position = ((x1 + x2)//2, | |
| (y1 + y2)//2) | |
| img.put(foreground_color, current_position) | |
| canvas.after(1, draw) | |
| draw() | |
| tk.mainloop() |
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