Mercurial > repos > rliterman > csp2
comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/turtledemo/round_dance.py @ 68:5028fdace37b
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
| author | jpayne |
|---|---|
| date | Tue, 18 Mar 2025 16:23:26 -0400 |
| parents | |
| children |
comparison
equal
deleted
inserted
replaced
| 67:0e9998148a16 | 68:5028fdace37b |
|---|---|
| 1 """ turtle-example-suite: | |
| 2 | |
| 3 tdemo_round_dance.py | |
| 4 | |
| 5 (Needs version 1.1 of the turtle module that | |
| 6 comes with Python 3.1) | |
| 7 | |
| 8 Dancing turtles have a compound shape | |
| 9 consisting of a series of triangles of | |
| 10 decreasing size. | |
| 11 | |
| 12 Turtles march along a circle while rotating | |
| 13 pairwise in opposite direction, with one | |
| 14 exception. Does that breaking of symmetry | |
| 15 enhance the attractiveness of the example? | |
| 16 | |
| 17 Press any key to stop the animation. | |
| 18 | |
| 19 Technically: demonstrates use of compound | |
| 20 shapes, transformation of shapes as well as | |
| 21 cloning turtles. The animation is | |
| 22 controlled through update(). | |
| 23 """ | |
| 24 | |
| 25 from turtle import * | |
| 26 | |
| 27 def stop(): | |
| 28 global running | |
| 29 running = False | |
| 30 | |
| 31 def main(): | |
| 32 global running | |
| 33 clearscreen() | |
| 34 bgcolor("gray10") | |
| 35 tracer(False) | |
| 36 shape("triangle") | |
| 37 f = 0.793402 | |
| 38 phi = 9.064678 | |
| 39 s = 5 | |
| 40 c = 1 | |
| 41 # create compound shape | |
| 42 sh = Shape("compound") | |
| 43 for i in range(10): | |
| 44 shapesize(s) | |
| 45 p =get_shapepoly() | |
| 46 s *= f | |
| 47 c *= f | |
| 48 tilt(-phi) | |
| 49 sh.addcomponent(p, (c, 0.25, 1-c), "black") | |
| 50 register_shape("multitri", sh) | |
| 51 # create dancers | |
| 52 shapesize(1) | |
| 53 shape("multitri") | |
| 54 pu() | |
| 55 setpos(0, -200) | |
| 56 dancers = [] | |
| 57 for i in range(180): | |
| 58 fd(7) | |
| 59 tilt(-4) | |
| 60 lt(2) | |
| 61 update() | |
| 62 if i % 12 == 0: | |
| 63 dancers.append(clone()) | |
| 64 home() | |
| 65 # dance | |
| 66 running = True | |
| 67 onkeypress(stop) | |
| 68 listen() | |
| 69 cs = 1 | |
| 70 while running: | |
| 71 ta = -4 | |
| 72 for dancer in dancers: | |
| 73 dancer.fd(7) | |
| 74 dancer.lt(2) | |
| 75 dancer.tilt(ta) | |
| 76 ta = -4 if ta > 0 else 2 | |
| 77 if cs < 180: | |
| 78 right(4) | |
| 79 shapesize(cs) | |
| 80 cs *= 1.005 | |
| 81 update() | |
| 82 return "DONE!" | |
| 83 | |
| 84 if __name__=='__main__': | |
| 85 print(main()) | |
| 86 mainloop() |