summaryrefslogtreecommitdiffstats
path: root/Demo/tkinter/guido/brownian2.py
diff options
context:
space:
mode:
Diffstat (limited to 'Demo/tkinter/guido/brownian2.py')
-rw-r--r--Demo/tkinter/guido/brownian2.py55
1 files changed, 0 insertions, 55 deletions
diff --git a/Demo/tkinter/guido/brownian2.py b/Demo/tkinter/guido/brownian2.py
deleted file mode 100644
index 3adcd68..0000000
--- a/Demo/tkinter/guido/brownian2.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# Brownian motion -- an example of a NON multi-threaded Tkinter program ;)
-# By Michele Simoniato, inspired by brownian.py
-
-from tkinter import *
-import random
-import sys
-
-WIDTH = 400
-HEIGHT = 300
-SIGMA = 10
-BUZZ = 2
-RADIUS = 2
-LAMBDA = 10
-FILL = 'red'
-
-stop = 0 # Set when main loop exits
-root = None # main window
-
-def particle(canvas): # particle = iterator over the moves
- 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)
- try:
- canvas.move(p, dx, dy)
- except TclError:
- break
- else:
- yield None
-
-def move(particle): # move the particle at random time
- next(particle)
- dt = random.expovariate(LAMBDA)
- root.after(int(dt*1000), move, particle)
-
-def main():
- global root, stop
- root = Tk()
- canvas = Canvas(root, width=WIDTH, height=HEIGHT)
- canvas.pack(fill='both', expand=1)
- np = 30
- if sys.argv[1:]:
- np = int(sys.argv[1])
- for i in range(np): # start the dance
- move(particle(canvas))
- try:
- root.mainloop()
- finally:
- stop = 1
-
-if __name__ == '__main__':
- main()