Mercurial > repos > rliterman > csp2
annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/turtledemo/rosette.py @ 68:5028fdace37b
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
| author | jpayne |
|---|---|
| date | Tue, 18 Mar 2025 16:23:26 -0400 |
| parents | |
| children |
| rev | line source |
|---|---|
| jpayne@68 | 1 """ turtle-example-suite: |
| jpayne@68 | 2 |
| jpayne@68 | 3 tdemo_wikipedia3.py |
| jpayne@68 | 4 |
| jpayne@68 | 5 This example is |
| jpayne@68 | 6 inspired by the Wikipedia article on turtle |
| jpayne@68 | 7 graphics. (See example wikipedia1 for URLs) |
| jpayne@68 | 8 |
| jpayne@68 | 9 First we create (ne-1) (i.e. 35 in this |
| jpayne@68 | 10 example) copies of our first turtle p. |
| jpayne@68 | 11 Then we let them perform their steps in |
| jpayne@68 | 12 parallel. |
| jpayne@68 | 13 |
| jpayne@68 | 14 Followed by a complete undo(). |
| jpayne@68 | 15 """ |
| jpayne@68 | 16 from turtle import Screen, Turtle, mainloop |
| jpayne@68 | 17 from time import perf_counter as clock, sleep |
| jpayne@68 | 18 |
| jpayne@68 | 19 def mn_eck(p, ne,sz): |
| jpayne@68 | 20 turtlelist = [p] |
| jpayne@68 | 21 #create ne-1 additional turtles |
| jpayne@68 | 22 for i in range(1,ne): |
| jpayne@68 | 23 q = p.clone() |
| jpayne@68 | 24 q.rt(360.0/ne) |
| jpayne@68 | 25 turtlelist.append(q) |
| jpayne@68 | 26 p = q |
| jpayne@68 | 27 for i in range(ne): |
| jpayne@68 | 28 c = abs(ne/2.0-i)/(ne*.7) |
| jpayne@68 | 29 # let those ne turtles make a step |
| jpayne@68 | 30 # in parallel: |
| jpayne@68 | 31 for t in turtlelist: |
| jpayne@68 | 32 t.rt(360./ne) |
| jpayne@68 | 33 t.pencolor(1-c,0,c) |
| jpayne@68 | 34 t.fd(sz) |
| jpayne@68 | 35 |
| jpayne@68 | 36 def main(): |
| jpayne@68 | 37 s = Screen() |
| jpayne@68 | 38 s.bgcolor("black") |
| jpayne@68 | 39 p=Turtle() |
| jpayne@68 | 40 p.speed(0) |
| jpayne@68 | 41 p.hideturtle() |
| jpayne@68 | 42 p.pencolor("red") |
| jpayne@68 | 43 p.pensize(3) |
| jpayne@68 | 44 |
| jpayne@68 | 45 s.tracer(36,0) |
| jpayne@68 | 46 |
| jpayne@68 | 47 at = clock() |
| jpayne@68 | 48 mn_eck(p, 36, 19) |
| jpayne@68 | 49 et = clock() |
| jpayne@68 | 50 z1 = et-at |
| jpayne@68 | 51 |
| jpayne@68 | 52 sleep(1) |
| jpayne@68 | 53 |
| jpayne@68 | 54 at = clock() |
| jpayne@68 | 55 while any(t.undobufferentries() for t in s.turtles()): |
| jpayne@68 | 56 for t in s.turtles(): |
| jpayne@68 | 57 t.undo() |
| jpayne@68 | 58 et = clock() |
| jpayne@68 | 59 return "runtime: %.3f sec" % (z1+et-at) |
| jpayne@68 | 60 |
| jpayne@68 | 61 |
| jpayne@68 | 62 if __name__ == '__main__': |
| jpayne@68 | 63 msg = main() |
| jpayne@68 | 64 print(msg) |
| jpayne@68 | 65 mainloop() |