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svn+ssh://svn.python.org/python/branches/py3k ........ r85820 | georg.brandl | 2010-10-24 16:20:22 +0200 (So, 24 Okt 2010) | 1 line Remove usage of exception indexing. ........ r85823 | georg.brandl | 2010-10-24 16:32:45 +0200 (So, 24 Okt 2010) | 1 line Fix style. ........ r85825 | georg.brandl | 2010-10-24 17:16:02 +0200 (So, 24 Okt 2010) | 1 line Add documentation about the default warnings filters. ........ r85840 | georg.brandl | 2010-10-25 19:50:20 +0200 (Mo, 25 Okt 2010) | 1 line #3018: tkinter demo fixes for py3k. ........ r85843 | georg.brandl | 2010-10-26 08:59:23 +0200 (Di, 26 Okt 2010) | 1 line Markup fix. ........ r85844 | georg.brandl | 2010-10-26 12:39:14 +0200 (Di, 26 Okt 2010) | 1 line Work a bit more on tkinter demos. ........ r85845 | georg.brandl | 2010-10-26 12:42:16 +0200 (Di, 26 Okt 2010) | 1 line faqwiz is removed. ........ r85849 | georg.brandl | 2010-10-26 21:31:06 +0200 (Di, 26 Okt 2010) | 1 line #10200: typo. ........ r85850 | georg.brandl | 2010-10-26 21:58:11 +0200 (Di, 26 Okt 2010) | 1 line #10200: typo. ........ r85851 | georg.brandl | 2010-10-26 22:12:37 +0200 (Di, 26 Okt 2010) | 1 line Fix import. ........ r85855 | georg.brandl | 2010-10-27 09:21:54 +0200 (Mi, 27 Okt 2010) | 1 line Encoding fix. ........ r85867 | georg.brandl | 2010-10-27 22:01:51 +0200 (Mi, 27 Okt 2010) | 1 line Add David. ........ r85875 | georg.brandl | 2010-10-28 10:38:30 +0200 (Do, 28 Okt 2010) | 1 line Fix bytes/str issues in get-remote-certificate.py. ........ r85907 | georg.brandl | 2010-10-29 06:54:13 +0200 (Fr, 29 Okt 2010) | 1 line #10222: fix for overzealous AIX compiler. ........ r85908 | georg.brandl | 2010-10-29 07:22:17 +0200 (Fr, 29 Okt 2010) | 1 line send_bytes obviously needs bytes... ........ r85911 | georg.brandl | 2010-10-29 07:36:28 +0200 (Fr, 29 Okt 2010) | 1 line Fix markup error and update false positive entries from "make suspicious". ........ r85914 | georg.brandl | 2010-10-29 08:17:38 +0200 (Fr, 29 Okt 2010) | 1 line (?:...) is a non-capturing, but still grouping construct. ........
91 lines
2.3 KiB
Python
Executable file
91 lines
2.3 KiB
Python
Executable file
#! /usr/bin/env python
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# Simulate "electrons" migrating across the screen.
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# An optional bitmap file in can be in the background.
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#
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# Usage: electrons [n [bitmapfile]]
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#
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# n is the number of electrons to animate; default is 30.
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#
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# The bitmap file can be any X11 bitmap file (look in
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# /usr/include/X11/bitmaps for samples); it is displayed as the
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# background of the animation. Default is no bitmap.
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from tkinter import *
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import random
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# The graphical interface
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class Electrons:
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# Create our objects
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def __init__(self, n, bitmap = None):
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self.n = n
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self.tk = tk = Tk()
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self.canvas = c = Canvas(tk)
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c.pack()
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width, height = tk.getint(c['width']), tk.getint(c['height'])
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# Add background bitmap
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if bitmap:
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self.bitmap = c.create_bitmap(width/2, height/2,
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bitmap=bitmap,
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foreground='blue')
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self.pieces = []
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x1, y1, x2, y2 = 10,70,14,74
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for i in range(n):
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p = c.create_oval(x1, y1, x2, y2, fill='red')
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self.pieces.append(p)
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y1, y2 = y1 +2, y2 + 2
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self.tk.update()
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def random_move(self, n):
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c = self.canvas
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for p in self.pieces:
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x = random.choice(range(-2,4))
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y = random.choice(range(-3,4))
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c.move(p, x, y)
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self.tk.update()
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# Run -- allow 500 movemens
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def run(self):
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try:
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for i in range(500):
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self.random_move(self.n)
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except TclError:
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try:
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self.tk.destroy()
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except TclError:
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pass
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# Main program
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def main():
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import sys
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# First argument is number of electrons, default 30
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if sys.argv[1:]:
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n = int(sys.argv[1])
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else:
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n = 30
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# Second argument is bitmap file, default none
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if sys.argv[2:]:
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bitmap = sys.argv[2]
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# Reverse meaning of leading '@' compared to Tk
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if bitmap[0] == '@': bitmap = bitmap[1:]
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else: bitmap = '@' + bitmap
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else:
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bitmap = None
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# Create the graphical objects...
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h = Electrons(n, bitmap)
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# ...and run!
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h.run()
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# Call main when run as script
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if __name__ == '__main__':
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main()
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