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ðŸ“ ..
ðŸ“„ about_turtle.txt(3.44 KB)
ðŸ“„ about_turtledemo.txt(302 B)
ðŸ“„ demohelp.txt(2.96 KB)
ðŸ“„ tdemo_I_dontlike_tiltdemo.py(1.05 KB)
ðŸ“„ tdemo_I_dontlike_tiltdemo.pyc(1.62 KB)
ðŸ“„ tdemo_I_dontlike_tiltdemo.pyo(1.62 KB)
ðŸ“„ tdemo_bytedesign.py(4.12 KB)
ðŸ“„ tdemo_bytedesign.pyc(5.19 KB)
ðŸ“„ tdemo_bytedesign.pyo(5.19 KB)
ðŸ“„ tdemo_chaos.py(951 B)
ðŸ“„ tdemo_chaos.pyc(2.24 KB)
ðŸ“„ tdemo_chaos.pyo(2.24 KB)
ðŸ“„ tdemo_clock.py(3.14 KB)
ðŸ“„ tdemo_clock.pyc(4.43 KB)
ðŸ“„ tdemo_clock.pyo(4.43 KB)
ðŸ“„ tdemo_colormixer.py(1.31 KB)
ðŸ“„ tdemo_colormixer.pyc(2.31 KB)
ðŸ“„ tdemo_colormixer.pyo(2.31 KB)
ðŸ“„ tdemo_fractalcurves.py(3.33 KB)
ðŸ“„ tdemo_fractalcurves.pyc(3.44 KB)
ðŸ“„ tdemo_fractalcurves.pyo(3.44 KB)
ðŸ“„ tdemo_lindenmayer_indian.py(2.38 KB)
ðŸ“„ tdemo_lindenmayer_indian.pyc(3.52 KB)
ðŸ“„ tdemo_lindenmayer_indian.pyo(3.52 KB)
ðŸ“„ tdemo_minimal_hanoi.py(2 KB)
ðŸ“„ tdemo_minimal_hanoi.pyc(3.54 KB)
ðŸ“„ tdemo_minimal_hanoi.pyo(3.54 KB)
ðŸ“„ tdemo_nim.py(6.36 KB)
ðŸ“„ tdemo_nim.pyc(9.16 KB)
ðŸ“„ tdemo_nim.pyo(9.16 KB)
ðŸ“„ tdemo_paint.py(1.26 KB)
ðŸ“„ tdemo_paint.pyc(1.86 KB)
ðŸ“„ tdemo_paint.pyo(1.86 KB)
ðŸ“„ tdemo_peace.py(1.04 KB)
ðŸ“„ tdemo_peace.pyc(1.36 KB)
ðŸ“„ tdemo_peace.pyo(1.36 KB)
ðŸ“„ tdemo_penrose.py(3.45 KB)
ðŸ“„ tdemo_penrose.pyc(5.86 KB)
ðŸ“„ tdemo_penrose.pyo(5.86 KB)
ðŸ“„ tdemo_planet_and_moon.py(2.76 KB)
ðŸ“„ tdemo_planet_and_moon.pyc(4.43 KB)
ðŸ“„ tdemo_planet_and_moon.pyo(4.43 KB)
ðŸ“„ tdemo_tree.py(1.38 KB)
ðŸ“„ tdemo_tree.pyc(2.07 KB)
ðŸ“„ tdemo_tree.pyo(2.07 KB)
ðŸ“„ tdemo_two_canvases.py(1.09 KB)
ðŸ“„ tdemo_two_canvases.pyc(1.6 KB)
ðŸ“„ tdemo_two_canvases.pyo(1.6 KB)
ðŸ“„ tdemo_wikipedia.py(1.32 KB)
ðŸ“„ tdemo_wikipedia.pyc(1.91 KB)
ðŸ“„ tdemo_wikipedia.pyo(1.91 KB)
ðŸ“„ tdemo_yinyang.py(807 B)
ðŸ“„ tdemo_yinyang.pyc(1.29 KB)
ðŸ“„ tdemo_yinyang.pyo(1.29 KB)
ðŸ“„ turtle.cfg(160 B)
ðŸ“„ turtleDemo.py(9.85 KB)
ðŸ“„ turtleDemo.pyc(10.69 KB)
ðŸ“„ turtleDemo.pyo(10.69 KB)

Editing: tdemo_fractalcurves.py

#! /usr/bin/python2.7
"""      turtle-example-suite:

tdemo_fractalCurves.py

This program draws two fractal-curve-designs:
(1) A hilbert curve (in a box)
(2) A combination of Koch-curves.

The CurvesTurtle class and the fractal-curve-
methods are taken from the PythonCard example
scripts for turtle-graphics.
"""
from turtle import *
from time import sleep, clock

class CurvesTurtle(Pen):
    # example derived from
    # Turtle Geometry: The Computer as a Medium for Exploring Mathematics
    # by Harold Abelson and Andrea diSessa
    # p. 96-98
    def hilbert(self, size, level, parity):
        if level == 0:
            return
        # rotate and draw first subcurve with opposite parity to big curve
        self.left(parity * 90)
        self.hilbert(size, level - 1, -parity)
        # interface to and draw second subcurve with same parity as big curve
        self.forward(size)
        self.right(parity * 90)
        self.hilbert(size, level - 1, parity)
        # third subcurve
        self.forward(size)
        self.hilbert(size, level - 1, parity)
        # fourth subcurve
        self.right(parity * 90)
        self.forward(size)
        self.hilbert(size, level - 1, -parity)
        # a final turn is needed to make the turtle
        # end up facing outward from the large square
        self.left(parity * 90)

# Visual Modeling with Logo: A Structural Approach to Seeing
    # by James Clayson
    # Koch curve, after Helge von Koch who introduced this geometric figure in 1904
    # p. 146
    def fractalgon(self, n, rad, lev, dir):
        import math

# if dir = 1 turn outward
        # if dir = -1 turn inward
        edge = 2 * rad * math.sin(math.pi / n)
        self.pu()
        self.fd(rad)
        self.pd()
        self.rt(180 - (90 * (n - 2) / n))
        for i in range(n):
            self.fractal(edge, lev, dir)
            self.rt(360 / n)
        self.lt(180 - (90 * (n - 2) / n))
        self.pu()
        self.bk(rad)
        self.pd()

# p. 146
    def fractal(self, dist, depth, dir):
        if depth < 1:
            self.fd(dist)
            return
        self.fractal(dist / 3, depth - 1, dir)
        self.lt(60 * dir)
        self.fractal(dist / 3, depth - 1, dir)
        self.rt(120 * dir)
        self.fractal(dist / 3, depth - 1, dir)
        self.lt(60 * dir)
        self.fractal(dist / 3, depth - 1, dir)

def main():
    ft = CurvesTurtle()

ft.reset()
    ft.speed(0)
    ft.ht()
    ft.tracer(1,0)
    ft.pu()

size = 6
    ft.setpos(-33*size, -32*size)
    ft.pd()

ta=clock()
    ft.fillcolor("red")
    ft.fill(True)
    ft.fd(size)

ft.hilbert(size, 6, 1)

# frame
    ft.fd(size)
    for i in range(3):
        ft.lt(90)
        ft.fd(size*(64+i%2))
    ft.pu()
    for i in range(2):
        ft.fd(size)
        ft.rt(90)
    ft.pd()
    for i in range(4):
        ft.fd(size*(66+i%2))
        ft.rt(90)
    ft.fill(False)
    tb=clock()
    res =  "Hilbert: %.2fsec. " % (tb-ta)

sleep(3)

ft.reset()
    ft.speed(0)
    ft.ht()
    ft.tracer(1,0)

ta=clock()
    ft.color("black", "blue")
    ft.fill(True)
    ft.fractalgon(3, 250, 4, 1)
    ft.fill(True)
    ft.color("red")
    ft.fractalgon(3, 200, 4, -1)
    ft.fill(False)
    tb=clock()
    res +=  "Koch: %.2fsec." % (tb-ta)
    return res

if __name__  == '__main__':
    msg = main()
    print msg
    mainloop()

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Editing: tdemo_fractalcurves.py

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