1 #!/usr/bin/env python3
2 """ turtle-example-suite:
3
4 tdemo_bytedesign.py
5
6 An example adapted from the example-suite
7 of PythonCard's turtle graphics.
8
9 It's based on an article in BYTE magazine
10 Problem Solving with Logo: Using Turtle
11 Graphics to Redraw a Design
12 November 1982, p. 118 - 134
13
14 -------------------------------------------
15
16 Due to the statement
17
18 t.delay(0)
19
20 in line 152, which sets the animation delay
21 to 0, this animation runs in "line per line"
22 mode as fast as possible.
23 """
24
25 from turtle import Turtle, mainloop
26 from time import perf_counter as clock
27
28 # wrapper for any additional drawing routines
29 # that need to know about each other
30 class ESC[4;38;5;81mDesigner(ESC[4;38;5;149mTurtle):
31
32 def design(self, homePos, scale):
33 self.up()
34 for i in range(5):
35 self.forward(64.65 * scale)
36 self.down()
37 self.wheel(self.position(), scale)
38 self.up()
39 self.backward(64.65 * scale)
40 self.right(72)
41 self.up()
42 self.goto(homePos)
43 self.right(36)
44 self.forward(24.5 * scale)
45 self.right(198)
46 self.down()
47 self.centerpiece(46 * scale, 143.4, scale)
48 self.getscreen().tracer(True)
49
50 def wheel(self, initpos, scale):
51 self.right(54)
52 for i in range(4):
53 self.pentpiece(initpos, scale)
54 self.down()
55 self.left(36)
56 for i in range(5):
57 self.tripiece(initpos, scale)
58 self.left(36)
59 for i in range(5):
60 self.down()
61 self.right(72)
62 self.forward(28 * scale)
63 self.up()
64 self.backward(28 * scale)
65 self.left(54)
66 self.getscreen().update()
67
68 def tripiece(self, initpos, scale):
69 oldh = self.heading()
70 self.down()
71 self.backward(2.5 * scale)
72 self.tripolyr(31.5 * scale, scale)
73 self.up()
74 self.goto(initpos)
75 self.setheading(oldh)
76 self.down()
77 self.backward(2.5 * scale)
78 self.tripolyl(31.5 * scale, scale)
79 self.up()
80 self.goto(initpos)
81 self.setheading(oldh)
82 self.left(72)
83 self.getscreen().update()
84
85 def pentpiece(self, initpos, scale):
86 oldh = self.heading()
87 self.up()
88 self.forward(29 * scale)
89 self.down()
90 for i in range(5):
91 self.forward(18 * scale)
92 self.right(72)
93 self.pentr(18 * scale, 75, scale)
94 self.up()
95 self.goto(initpos)
96 self.setheading(oldh)
97 self.forward(29 * scale)
98 self.down()
99 for i in range(5):
100 self.forward(18 * scale)
101 self.right(72)
102 self.pentl(18 * scale, 75, scale)
103 self.up()
104 self.goto(initpos)
105 self.setheading(oldh)
106 self.left(72)
107 self.getscreen().update()
108
109 def pentl(self, side, ang, scale):
110 if side < (2 * scale): return
111 self.forward(side)
112 self.left(ang)
113 self.pentl(side - (.38 * scale), ang, scale)
114
115 def pentr(self, side, ang, scale):
116 if side < (2 * scale): return
117 self.forward(side)
118 self.right(ang)
119 self.pentr(side - (.38 * scale), ang, scale)
120
121 def tripolyr(self, side, scale):
122 if side < (4 * scale): return
123 self.forward(side)
124 self.right(111)
125 self.forward(side / 1.78)
126 self.right(111)
127 self.forward(side / 1.3)
128 self.right(146)
129 self.tripolyr(side * .75, scale)
130
131 def tripolyl(self, side, scale):
132 if side < (4 * scale): return
133 self.forward(side)
134 self.left(111)
135 self.forward(side / 1.78)
136 self.left(111)
137 self.forward(side / 1.3)
138 self.left(146)
139 self.tripolyl(side * .75, scale)
140
141 def centerpiece(self, s, a, scale):
142 self.forward(s); self.left(a)
143 if s < (7.5 * scale):
144 return
145 self.centerpiece(s - (1.2 * scale), a, scale)
146
147 def main():
148 t = Designer()
149 t.speed(0)
150 t.hideturtle()
151 t.getscreen().delay(0)
152 t.getscreen().tracer(0)
153 at = clock()
154 t.design(t.position(), 2)
155 et = clock()
156 return "runtime: %.2f sec." % (et-at)
157
158 if __name__ == '__main__':
159 msg = main()
160 print(msg)
161 mainloop()