tkinter布朗运动,注意:bug, 退出异常, 不能退出
#!/usr/bin/env python3 # -*- coding: UTF-8 -*- # Brownian motion '''Brownian motion -- an example of a multi-threaded Tkinter program. python开发_thread_布朗运动 https://www.cnblogs.com/hongten/p/hongten_python_thread_tkinter_brownian.html 注意:bug, 退出异常, 不能退出 下面我将给大家介绍有关python中thread来实现布朗运动的一个例子 ''' import random import sys import threading import time from tkinter import Tk, Canvas # 画布大小 WIDTH = 500 HEIGHT = 500 SIGMA = 50 BUZZ = 2 RADIUS = 3 LAMBDA = 10 FILL = 'red' stop = 0 # Set when main loop exits def particle(canvas): r = RADIUS x = random.gauss(WIDTH / 2.0, SIGMA) y = random.gauss(HEIGHT / 2.0, SIGMA) p = canvas.create_oval(x - r, y - r, x + r, y + r, fill=FILL) while not stop: dx = random.gauss(0, BUZZ) dy = random.gauss(0, BUZZ) dt = random.expovariate(LAMBDA) try: canvas.move(p, dx, dy) except TclError: break time.sleep(dt) def main(): global stop root = Tk() root.title('布朗运动') canvas = Canvas(root, width=WIDTH, height=HEIGHT) canvas.pack(fill='both', expand=1) # 粒子数目 np = 30 if sys.argv[1:]: np = int(sys.argv[1]) for i in range(np): t = threading.Thread(target=particle, args=(canvas, )) t.start() try: root.mainloop() finally: stop = 1 main()