Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: fd757083df79c21eee862e8d89aeefefe45f64a0 authored by Ćukasz Langa on 19 November 2019, 11:17:21 UTC
Python 3.9.0a1
Python 3.9.0a1
Tip revision: fd75708
bytedesign.py
#!/usr/bin/env python3
""" turtle-example-suite:
tdemo_bytedesign.py
An example adapted from the example-suite
of PythonCard's turtle graphics.
It's based on an article in BYTE magazine
Problem Solving with Logo: Using Turtle
Graphics to Redraw a Design
November 1982, p. 118 - 134
-------------------------------------------
Due to the statement
t.delay(0)
in line 152, which sets the animation delay
to 0, this animation runs in "line per line"
mode as fast as possible.
"""
from turtle import Turtle, mainloop
from time import perf_counter as clock
# wrapper for any additional drawing routines
# that need to know about each other
class Designer(Turtle):
def design(self, homePos, scale):
self.up()
for i in range(5):
self.forward(64.65 * scale)
self.down()
self.wheel(self.position(), scale)
self.up()
self.backward(64.65 * scale)
self.right(72)
self.up()
self.goto(homePos)
self.right(36)
self.forward(24.5 * scale)
self.right(198)
self.down()
self.centerpiece(46 * scale, 143.4, scale)
self.getscreen().tracer(True)
def wheel(self, initpos, scale):
self.right(54)
for i in range(4):
self.pentpiece(initpos, scale)
self.down()
self.left(36)
for i in range(5):
self.tripiece(initpos, scale)
self.left(36)
for i in range(5):
self.down()
self.right(72)
self.forward(28 * scale)
self.up()
self.backward(28 * scale)
self.left(54)
self.getscreen().update()
def tripiece(self, initpos, scale):
oldh = self.heading()
self.down()
self.backward(2.5 * scale)
self.tripolyr(31.5 * scale, scale)
self.up()
self.goto(initpos)
self.setheading(oldh)
self.down()
self.backward(2.5 * scale)
self.tripolyl(31.5 * scale, scale)
self.up()
self.goto(initpos)
self.setheading(oldh)
self.left(72)
self.getscreen().update()
def pentpiece(self, initpos, scale):
oldh = self.heading()
self.up()
self.forward(29 * scale)
self.down()
for i in range(5):
self.forward(18 * scale)
self.right(72)
self.pentr(18 * scale, 75, scale)
self.up()
self.goto(initpos)
self.setheading(oldh)
self.forward(29 * scale)
self.down()
for i in range(5):
self.forward(18 * scale)
self.right(72)
self.pentl(18 * scale, 75, scale)
self.up()
self.goto(initpos)
self.setheading(oldh)
self.left(72)
self.getscreen().update()
def pentl(self, side, ang, scale):
if side < (2 * scale): return
self.forward(side)
self.left(ang)
self.pentl(side - (.38 * scale), ang, scale)
def pentr(self, side, ang, scale):
if side < (2 * scale): return
self.forward(side)
self.right(ang)
self.pentr(side - (.38 * scale), ang, scale)
def tripolyr(self, side, scale):
if side < (4 * scale): return
self.forward(side)
self.right(111)
self.forward(side / 1.78)
self.right(111)
self.forward(side / 1.3)
self.right(146)
self.tripolyr(side * .75, scale)
def tripolyl(self, side, scale):
if side < (4 * scale): return
self.forward(side)
self.left(111)
self.forward(side / 1.78)
self.left(111)
self.forward(side / 1.3)
self.left(146)
self.tripolyl(side * .75, scale)
def centerpiece(self, s, a, scale):
self.forward(s); self.left(a)
if s < (7.5 * scale):
return
self.centerpiece(s - (1.2 * scale), a, scale)
def main():
t = Designer()
t.speed(0)
t.hideturtle()
t.getscreen().delay(0)
t.getscreen().tracer(0)
at = clock()
t.design(t.position(), 2)
et = clock()
return "runtime: %.2f sec." % (et-at)
if __name__ == '__main__':
msg = main()
print(msg)
mainloop()