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PATH: opt / bitninja-python-dojo / embedded / lib / python3.9 / turtledemo

"""      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()

[-] sorting_animate.py [edit]
[-] nim.py [edit]
[+] ..
[-] clock.py [edit]
[-] yinyang.py [edit]
[-] chaos.py [edit]
[-] turtle.cfg [edit]
[-] bytedesign.py [edit]
[-] penrose.py [edit]
[-] __main__.py [edit]
[-] forest.py [edit]
[-] colormixer.py [edit]
[-] paint.py [edit]
[+] __pycache__
[-] __init__.py [edit]
[-] peace.py [edit]
[-] planet_and_moon.py [edit]
[-] minimal_hanoi.py [edit]
[-] fractalcurves.py [edit]
[-] lindenmayer.py [edit]
[-] rosette.py [edit]
[-] tree.py [edit]
[-] round_dance.py [edit]
[-] two_canvases.py [edit]