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162 lines
4.1 KiB
Python
162 lines
4.1 KiB
Python
#!/usr/bin/env python3
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""" turtle-example-suite:
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tdemo_bytedesign.py
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An example adapted from the example-suite
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of PythonCard's turtle graphics.
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It's based on an article in BYTE magazine
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Problem Solving with Logo: Using Turtle
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Graphics to Redraw a Design
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November 1982, p. 118 - 134
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-------------------------------------------
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Due to the statement
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t.delay(0)
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in line 152, which sets the animation delay
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to 0, this animation runs in "line per line"
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mode as fast as possible.
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"""
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import math
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from turtle import Turtle, mainloop
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from time import clock
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# wrapper for any additional drawing routines
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# that need to know about each other
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class Designer(Turtle):
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def design(self, homePos, scale):
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self.up()
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for i in range(5):
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self.forward(64.65 * scale)
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self.down()
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self.wheel(self.position(), scale)
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self.up()
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self.backward(64.65 * scale)
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self.right(72)
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self.up()
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self.goto(homePos)
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self.right(36)
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self.forward(24.5 * scale)
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self.right(198)
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self.down()
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self.centerpiece(46 * scale, 143.4, scale)
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self.getscreen().tracer(True)
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def wheel(self, initpos, scale):
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self.right(54)
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for i in range(4):
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self.pentpiece(initpos, scale)
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self.down()
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self.left(36)
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for i in range(5):
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self.tripiece(initpos, scale)
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self.left(36)
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for i in range(5):
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self.down()
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self.right(72)
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self.forward(28 * scale)
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self.up()
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self.backward(28 * scale)
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self.left(54)
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self.getscreen().update()
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def tripiece(self, initpos, scale):
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oldh = self.heading()
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self.down()
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self.backward(2.5 * scale)
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self.tripolyr(31.5 * scale, scale)
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self.up()
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self.goto(initpos)
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self.setheading(oldh)
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self.down()
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self.backward(2.5 * scale)
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self.tripolyl(31.5 * scale, scale)
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self.up()
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self.goto(initpos)
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self.setheading(oldh)
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self.left(72)
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self.getscreen().update()
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def pentpiece(self, initpos, scale):
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oldh = self.heading()
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self.up()
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self.forward(29 * scale)
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self.down()
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for i in range(5):
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self.forward(18 * scale)
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self.right(72)
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self.pentr(18 * scale, 75, scale)
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self.up()
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self.goto(initpos)
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self.setheading(oldh)
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self.forward(29 * scale)
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self.down()
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for i in range(5):
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self.forward(18 * scale)
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self.right(72)
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self.pentl(18 * scale, 75, scale)
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self.up()
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self.goto(initpos)
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self.setheading(oldh)
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self.left(72)
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self.getscreen().update()
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def pentl(self, side, ang, scale):
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if side < (2 * scale): return
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self.forward(side)
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self.left(ang)
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self.pentl(side - (.38 * scale), ang, scale)
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def pentr(self, side, ang, scale):
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if side < (2 * scale): return
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self.forward(side)
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self.right(ang)
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self.pentr(side - (.38 * scale), ang, scale)
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def tripolyr(self, side, scale):
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if side < (4 * scale): return
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self.forward(side)
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self.right(111)
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self.forward(side / 1.78)
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self.right(111)
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self.forward(side / 1.3)
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self.right(146)
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self.tripolyr(side * .75, scale)
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def tripolyl(self, side, scale):
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if side < (4 * scale): return
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self.forward(side)
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self.left(111)
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self.forward(side / 1.78)
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self.left(111)
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self.forward(side / 1.3)
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self.left(146)
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self.tripolyl(side * .75, scale)
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def centerpiece(self, s, a, scale):
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self.forward(s); self.left(a)
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if s < (7.5 * scale):
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return
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self.centerpiece(s - (1.2 * scale), a, scale)
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def main():
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t = Designer()
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t.speed(0)
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t.hideturtle()
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t.getscreen().delay(0)
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t.getscreen().tracer(0)
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at = clock()
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t.design(t.position(), 2)
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et = clock()
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return "runtime: %.2f sec." % (et-at)
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if __name__ == '__main__':
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msg = main()
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print(msg)
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mainloop()
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