| 1 | #!/usr/bin/env python
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| 2 | """ turtle-example-suite:
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| 3 |
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| 4 | tdemo_bytedesign.py
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| 5 |
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| 6 | An example adapted from the example-suite
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| 7 | of PythonCard's turtle graphcis.
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| 8 |
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| 9 | It's based on an article in BYTE magazine
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| 10 | Problem Solving with Logo: Using Turtle
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| 11 | Graphics to Redraw a Design
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| 12 | November 1982, p. 118 - 134
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| 13 |
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| 14 | -------------------------------------------
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| 15 |
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| 16 | Due to the statement
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| 17 |
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| 18 | t.delay(0)
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| 19 |
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| 20 | in line 152, which sets the animation delay
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| 21 | to 0, this animation runs in "line per line"
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| 22 | mode as fast as possible.
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| 23 | """
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| 24 |
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| 25 | import math
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| 26 | from turtle import Turtle, mainloop
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| 27 | from time import clock
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| 28 |
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| 29 | # wrapper for any additional drawing routines
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| 30 | # that need to know about each other
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| 31 | class Designer(Turtle):
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| 32 |
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| 33 | def design(self, homePos, scale):
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| 34 | self.up()
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| 35 | for i in range(5):
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| 36 | self.forward(64.65 * scale)
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| 37 | self.down()
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| 38 | self.wheel(self.position(), scale)
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| 39 | self.up()
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| 40 | self.backward(64.65 * scale)
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| 41 | self.right(72)
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| 42 | self.up()
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| 43 | self.goto(homePos)
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| 44 | self.right(36)
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| 45 | self.forward(24.5 * scale)
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| 46 | self.right(198)
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| 47 | self.down()
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| 48 | self.centerpiece(46 * scale, 143.4, scale)
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| 49 | self.tracer(True)
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| 50 |
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| 51 | def wheel(self, initpos, scale):
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| 52 | self.right(54)
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| 53 | for i in range(4):
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| 54 | self.pentpiece(initpos, scale)
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| 55 | self.down()
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| 56 | self.left(36)
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| 57 | for i in range(5):
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| 58 | self.tripiece(initpos, scale)
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| 59 | self.left(36)
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| 60 | for i in range(5):
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| 61 | self.down()
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| 62 | self.right(72)
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| 63 | self.forward(28 * scale)
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| 64 | self.up()
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| 65 | self.backward(28 * scale)
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| 66 | self.left(54)
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| 67 | self.getscreen().update()
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| 68 |
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| 69 | def tripiece(self, initpos, scale):
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| 70 | oldh = self.heading()
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| 71 | self.down()
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| 72 | self.backward(2.5 * scale)
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| 73 | self.tripolyr(31.5 * scale, scale)
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| 74 | self.up()
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| 75 | self.goto(initpos)
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| 76 | self.setheading(oldh)
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| 77 | self.down()
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| 78 | self.backward(2.5 * scale)
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| 79 | self.tripolyl(31.5 * scale, scale)
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| 80 | self.up()
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| 81 | self.goto(initpos)
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| 82 | self.setheading(oldh)
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| 83 | self.left(72)
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| 84 | self.getscreen().update()
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| 85 |
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| 86 | def pentpiece(self, initpos, scale):
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| 87 | oldh = self.heading()
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| 88 | self.up()
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| 89 | self.forward(29 * scale)
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| 90 | self.down()
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| 91 | for i in range(5):
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| 92 | self.forward(18 * scale)
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| 93 | self.right(72)
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| 94 | self.pentr(18 * scale, 75, scale)
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| 95 | self.up()
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| 96 | self.goto(initpos)
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| 97 | self.setheading(oldh)
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| 98 | self.forward(29 * scale)
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| 99 | self.down()
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| 100 | for i in range(5):
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| 101 | self.forward(18 * scale)
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| 102 | self.right(72)
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| 103 | self.pentl(18 * scale, 75, scale)
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| 104 | self.up()
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| 105 | self.goto(initpos)
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| 106 | self.setheading(oldh)
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| 107 | self.left(72)
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| 108 | self.getscreen().update()
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| 109 |
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| 110 | def pentl(self, side, ang, scale):
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| 111 | if side < (2 * scale): return
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| 112 | self.forward(side)
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| 113 | self.left(ang)
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| 114 | self.pentl(side - (.38 * scale), ang, scale)
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| 115 |
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| 116 | def pentr(self, side, ang, scale):
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| 117 | if side < (2 * scale): return
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| 118 | self.forward(side)
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| 119 | self.right(ang)
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| 120 | self.pentr(side - (.38 * scale), ang, scale)
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| 121 |
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| 122 | def tripolyr(self, side, scale):
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| 123 | if side < (4 * scale): return
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| 124 | self.forward(side)
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| 125 | self.right(111)
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| 126 | self.forward(side / 1.78)
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| 127 | self.right(111)
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| 128 | self.forward(side / 1.3)
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| 129 | self.right(146)
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| 130 | self.tripolyr(side * .75, scale)
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| 131 |
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| 132 | def tripolyl(self, side, scale):
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| 133 | if side < (4 * scale): return
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| 134 | self.forward(side)
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| 135 | self.left(111)
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| 136 | self.forward(side / 1.78)
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| 137 | self.left(111)
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| 138 | self.forward(side / 1.3)
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| 139 | self.left(146)
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| 140 | self.tripolyl(side * .75, scale)
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| 141 |
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| 142 | def centerpiece(self, s, a, scale):
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| 143 | self.forward(s); self.left(a)
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| 144 | if s < (7.5 * scale):
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| 145 | return
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| 146 | self.centerpiece(s - (1.2 * scale), a, scale)
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| 147 |
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| 148 | def main():
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| 149 | t = Designer()
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| 150 | t.speed(0)
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| 151 | t.hideturtle()
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| 152 | t.getscreen().delay(0)
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| 153 | t.tracer(0)
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| 154 | at = clock()
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| 155 | t.design(t.position(), 2)
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| 156 | et = clock()
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| 157 | return "runtime: %.2f sec." % (et-at)
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| 158 |
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| 159 | if __name__ == '__main__':
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| 160 | msg = main()
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| 161 | print msg
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| 162 | mainloop()
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