mirror of
https://github.com/python/cpython.git
synced 2025-10-26 03:04:41 +00:00
c8b45a385a
* gh-118673: Remove shebang and executable bits from stdlib modules. * Removed shebangs and exe bits on turtledemo scripts. The setting was inappropriate for '__main__' and inconsistent across the other modules. The scripts can still be executed directly by invoking with the desired interpreter.
107 lines
2.9 KiB
Python
107 lines
2.9 KiB
Python
""" turtlegraphics-example-suite:
|
|
|
|
tdemo_forest.py
|
|
|
|
Displays a 'forest' of 3 breadth-first-trees
|
|
similar to the one in tree.
|
|
For further remarks see tree.py
|
|
|
|
This example is a 'breadth-first'-rewrite of
|
|
a Logo program written by Erich Neuwirth. See
|
|
http://homepage.univie.ac.at/erich.neuwirth/
|
|
"""
|
|
from turtle import Turtle, colormode, tracer, mainloop
|
|
from random import randrange
|
|
from time import perf_counter as clock
|
|
|
|
def symRandom(n):
|
|
return randrange(-n,n+1)
|
|
|
|
def randomize( branchlist, angledist, sizedist ):
|
|
return [ (angle+symRandom(angledist),
|
|
sizefactor*1.01**symRandom(sizedist))
|
|
for angle, sizefactor in branchlist ]
|
|
|
|
def randomfd( t, distance, parts, angledist ):
|
|
for i in range(parts):
|
|
t.left(symRandom(angledist))
|
|
t.forward( (1.0 * distance)/parts )
|
|
|
|
def tree(tlist, size, level, widthfactor, branchlists, angledist=10, sizedist=5):
|
|
# benutzt Liste von turtles und Liste von Zweiglisten,
|
|
# fuer jede turtle eine!
|
|
if level > 0:
|
|
lst = []
|
|
brs = []
|
|
for t, branchlist in list(zip(tlist,branchlists)):
|
|
t.pensize( size * widthfactor )
|
|
t.pencolor( 255 - (180 - 11 * level + symRandom(15)),
|
|
180 - 11 * level + symRandom(15),
|
|
0 )
|
|
t.pendown()
|
|
randomfd(t, size, level, angledist )
|
|
yield 1
|
|
for angle, sizefactor in branchlist:
|
|
t.left(angle)
|
|
lst.append(t.clone())
|
|
brs.append(randomize(branchlist, angledist, sizedist))
|
|
t.right(angle)
|
|
for x in tree(lst, size*sizefactor, level-1, widthfactor, brs,
|
|
angledist, sizedist):
|
|
yield None
|
|
|
|
|
|
def start(t,x,y):
|
|
colormode(255)
|
|
t.reset()
|
|
t.speed(0)
|
|
t.hideturtle()
|
|
t.left(90)
|
|
t.penup()
|
|
t.setpos(x,y)
|
|
t.pendown()
|
|
|
|
def doit1(level, pen):
|
|
pen.hideturtle()
|
|
start(pen, 20, -208)
|
|
t = tree( [pen], 80, level, 0.1, [[ (45,0.69), (0,0.65), (-45,0.71) ]] )
|
|
return t
|
|
|
|
def doit2(level, pen):
|
|
pen.hideturtle()
|
|
start(pen, -135, -130)
|
|
t = tree( [pen], 120, level, 0.1, [[ (45,0.69), (-45,0.71) ]] )
|
|
return t
|
|
|
|
def doit3(level, pen):
|
|
pen.hideturtle()
|
|
start(pen, 190, -90)
|
|
t = tree( [pen], 100, level, 0.1, [[ (45,0.7), (0,0.72), (-45,0.65) ]] )
|
|
return t
|
|
|
|
# Hier 3 Baumgeneratoren:
|
|
def main():
|
|
p = Turtle()
|
|
p.ht()
|
|
tracer(75,0)
|
|
u = doit1(6, Turtle(undobuffersize=1))
|
|
s = doit2(7, Turtle(undobuffersize=1))
|
|
t = doit3(5, Turtle(undobuffersize=1))
|
|
a = clock()
|
|
while True:
|
|
done = 0
|
|
for b in u,s,t:
|
|
try:
|
|
b.__next__()
|
|
except:
|
|
done += 1
|
|
if done == 3:
|
|
break
|
|
|
|
tracer(1,10)
|
|
b = clock()
|
|
return "runtime: %.2f sec." % (b-a)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|
|
mainloop()
|