66 lines
1.3 KiB
Python
66 lines
1.3 KiB
Python
|
""" turtle-example-suite:
|
||
|
|
|
||
|
|
tdemo_wikipedia3.py
|
||
|
|
|
||
|
|
This example is
|
||
|
|
inspired by the Wikipedia article on turtle
|
||
|
|
graphics. (See example wikipedia1 for URLs)
|
||
|
|
|
||
|
|
First we create (ne-1) (i.e. 35 in this
|
||
|
|
example) copies of our first turtle p.
|
||
|
|
Then we let them perform their steps in
|
||
|
|
parallel.
|
||
|
|
|
||
|
|
Followed by a complete undo().
|
||
|
|
"""
|
||
|
|
from turtle import Screen, Turtle, mainloop
|
||
|
|
from time import perf_counter as clock, sleep
|
||
|
|
|
||
|
|
def mn_eck(p, ne,sz):
|
||
|
|
turtlelist = [p]
|
||
|
|
#create ne-1 additional turtles
|
||
|
|
for i in range(1,ne):
|
||
|
|
q = p.clone()
|
||
|
|
q.rt(360.0/ne)
|
||
|
|
turtlelist.append(q)
|
||
|
|
p = q
|
||
|
|
for i in range(ne):
|
||
|
|
c = abs(ne/2.0-i)/(ne*.7)
|
||
|
|
# let those ne turtles make a step
|
||
|
|
# in parallel:
|
||
|
|
for t in turtlelist:
|
||
|
|
t.rt(360./ne)
|
||
|
|
t.pencolor(1-c,0,c)
|
||
|
|
t.fd(sz)
|
||
|
|
|
||
|
|
def main():
|
||
|
|
s = Screen()
|
||
|
|
s.bgcolor("black")
|
||
|
|
p=Turtle()
|
||
|
|
p.speed(0)
|
||
|
|
p.hideturtle()
|
||
|
|
p.pencolor("red")
|
||
|
|
p.pensize(3)
|
||
|
|
|
||
|
|
s.tracer(36,0)
|
||
|
|
|
||
|
|
at = clock()
|
||
|
|
mn_eck(p, 36, 19)
|
||
|
|
et = clock()
|
||
|
|
z1 = et-at
|
||
|
|
|
||
|
|
sleep(1)
|
||
|
|
|
||
|
|
at = clock()
|
||
|
|
while any(t.undobufferentries() for t in s.turtles()):
|
||
|
|
for t in s.turtles():
|
||
|
|
t.undo()
|
||
|
|
et = clock()
|
||
|
|
return "runtime: %.3f sec" % (z1+et-at)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
msg = main()
|
||
|
|
print(msg)
|
||
|
|
mainloop()
|