| Benjamin Peterson | 90f5ba5 | 2010-03-11 22:53:45 +0000 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| Martin v. Löwis | 97cf99f | 2008-06-10 04:44:07 +0000 | [diff] [blame] | 2 | """ turtle-example-suite: |
| 3 | |
| 4 | tdemo_bytedesign.py |
| 5 | |
| 6 | An example adapted from the example-suite |
| 7 | of PythonCard's turtle graphcis. |
| 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 | import math |
| Martin v. Löwis | 60ebb8b | 2008-09-21 07:32:10 +0000 | [diff] [blame] | 26 | from turtle import Turtle, mainloop |
| Martin v. Löwis | 97cf99f | 2008-06-10 04:44:07 +0000 | [diff] [blame] | 27 | from time import clock |
| 28 | |
| 29 | # wrapper for any additional drawing routines |
| 30 | # that need to know about each other |
| 31 | class Designer(Turtle): |
| 32 | |
| 33 | def design(self, homePos, scale): |
| 34 | self.up() |
| 35 | for i in range(5): |
| 36 | self.forward(64.65 * scale) |
| 37 | self.down() |
| 38 | self.wheel(self.position(), scale) |
| 39 | self.up() |
| 40 | self.backward(64.65 * scale) |
| 41 | self.right(72) |
| 42 | self.up() |
| 43 | self.goto(homePos) |
| 44 | self.right(36) |
| 45 | self.forward(24.5 * scale) |
| 46 | self.right(198) |
| 47 | self.down() |
| 48 | self.centerpiece(46 * scale, 143.4, scale) |
| 49 | self.getscreen().tracer(True) |
| 50 | |
| 51 | def wheel(self, initpos, scale): |
| 52 | self.right(54) |
| 53 | for i in range(4): |
| 54 | self.pentpiece(initpos, scale) |
| 55 | self.down() |
| 56 | self.left(36) |
| 57 | for i in range(5): |
| 58 | self.tripiece(initpos, scale) |
| 59 | self.left(36) |
| 60 | for i in range(5): |
| 61 | self.down() |
| 62 | self.right(72) |
| 63 | self.forward(28 * scale) |
| 64 | self.up() |
| 65 | self.backward(28 * scale) |
| 66 | self.left(54) |
| 67 | self.getscreen().update() |
| 68 | |
| 69 | def tripiece(self, initpos, scale): |
| 70 | oldh = self.heading() |
| 71 | self.down() |
| 72 | self.backward(2.5 * scale) |
| 73 | self.tripolyr(31.5 * scale, scale) |
| 74 | self.up() |
| 75 | self.goto(initpos) |
| 76 | self.setheading(oldh) |
| 77 | self.down() |
| 78 | self.backward(2.5 * scale) |
| 79 | self.tripolyl(31.5 * scale, scale) |
| 80 | self.up() |
| 81 | self.goto(initpos) |
| 82 | self.setheading(oldh) |
| 83 | self.left(72) |
| 84 | self.getscreen().update() |
| 85 | |
| 86 | def pentpiece(self, initpos, scale): |
| 87 | oldh = self.heading() |
| 88 | self.up() |
| 89 | self.forward(29 * scale) |
| 90 | self.down() |
| 91 | for i in range(5): |
| 92 | self.forward(18 * scale) |
| 93 | self.right(72) |
| 94 | self.pentr(18 * scale, 75, scale) |
| 95 | self.up() |
| 96 | self.goto(initpos) |
| 97 | self.setheading(oldh) |
| 98 | self.forward(29 * scale) |
| 99 | self.down() |
| 100 | for i in range(5): |
| 101 | self.forward(18 * scale) |
| 102 | self.right(72) |
| 103 | self.pentl(18 * scale, 75, scale) |
| 104 | self.up() |
| 105 | self.goto(initpos) |
| 106 | self.setheading(oldh) |
| 107 | self.left(72) |
| 108 | self.getscreen().update() |
| 109 | |
| 110 | def pentl(self, side, ang, scale): |
| 111 | if side < (2 * scale): return |
| 112 | self.forward(side) |
| 113 | self.left(ang) |
| 114 | self.pentl(side - (.38 * scale), ang, scale) |
| 115 | |
| 116 | def pentr(self, side, ang, scale): |
| 117 | if side < (2 * scale): return |
| 118 | self.forward(side) |
| 119 | self.right(ang) |
| 120 | self.pentr(side - (.38 * scale), ang, scale) |
| 121 | |
| 122 | def tripolyr(self, side, scale): |
| 123 | if side < (4 * scale): return |
| 124 | self.forward(side) |
| 125 | self.right(111) |
| 126 | self.forward(side / 1.78) |
| 127 | self.right(111) |
| 128 | self.forward(side / 1.3) |
| 129 | self.right(146) |
| 130 | self.tripolyr(side * .75, scale) |
| 131 | |
| 132 | def tripolyl(self, side, scale): |
| 133 | if side < (4 * scale): return |
| 134 | self.forward(side) |
| 135 | self.left(111) |
| 136 | self.forward(side / 1.78) |
| 137 | self.left(111) |
| 138 | self.forward(side / 1.3) |
| 139 | self.left(146) |
| 140 | self.tripolyl(side * .75, scale) |
| 141 | |
| 142 | def centerpiece(self, s, a, scale): |
| 143 | self.forward(s); self.left(a) |
| 144 | if s < (7.5 * scale): |
| 145 | return |
| 146 | self.centerpiece(s - (1.2 * scale), a, scale) |
| 147 | |
| 148 | def main(): |
| 149 | t = Designer() |
| 150 | t.speed(0) |
| 151 | t.hideturtle() |
| 152 | t.getscreen().delay(0) |
| 153 | t.getscreen().tracer(0) |
| 154 | at = clock() |
| 155 | t.design(t.position(), 2) |
| 156 | et = clock() |
| 157 | return "runtime: %.2f sec." % (et-at) |
| 158 | |
| 159 | if __name__ == '__main__': |
| 160 | msg = main() |
| 161 | print(msg) |
| 162 | mainloop() |