FM / turtle

/usr/lib64/python2.6/Demo/turtle

Name	Size	Mode	Actions
about_turtle.txt	3496	0644	edit dl rm
about_turtledemo.txt	302	0644	edit dl rm
demohelp.txt	2438	0644	edit dl rm
tdemo_bytedesign.py	4196	0644	edit dl rm
tdemo_bytedesign.pyc	5337	0644	edit dl rm
tdemo_bytedesign.pyo	5337	0644	edit dl rm
tdemo_chaos.py	953	0644	edit dl rm
tdemo_chaos.pyc	2303	0644	edit dl rm
tdemo_chaos.pyo	2303	0644	edit dl rm
tdemo_clock.py	2995	0644	edit dl rm
tdemo_clock.pyc	4498	0644	edit dl rm
tdemo_clock.pyo	4498	0644	edit dl rm
tdemo_colormixer.py	1338	0644	edit dl rm
tdemo_colormixer.pyc	2367	0644	edit dl rm
tdemo_colormixer.pyo	2367	0644	edit dl rm
tdemo_fractalcurves.py	3387	0644	edit dl rm
tdemo_fractalcurves.pyc	3538	0644	edit dl rm
tdemo_fractalcurves.pyo	3538	0644	edit dl rm
tdemo_I_dontlike_tiltdemo.py	1050	0644	edit dl rm
tdemo_I_dontlike_tiltdemo.pyc	1673	0644	edit dl rm
tdemo_I_dontlike_tiltdemo.pyo	1673	0644	edit dl rm
tdemo_lindenmayer_indian.py	2410	0644	edit dl rm
tdemo_lindenmayer_indian.pyc	3612	0644	edit dl rm
tdemo_lindenmayer_indian.pyo	3612	0644	edit dl rm
tdemo_minimal_hanoi.py	1938	0644	edit dl rm
tdemo_minimal_hanoi.pyc	3595	0644	edit dl rm
tdemo_minimal_hanoi.pyo	3595	0644	edit dl rm
tdemo_paint.py	1103	0644	edit dl rm
tdemo_paint.pyc	1741	0644	edit dl rm
tdemo_paint.pyo	1741	0644	edit dl rm
tdemo_peace.py	1094	0644	edit dl rm
tdemo_peace.pyc	1447	0644	edit dl rm
tdemo_peace.pyo	1447	0644	edit dl rm
tdemo_penrose.py	3513	0644	edit dl rm
tdemo_penrose.pyc	6067	0644	edit dl rm
tdemo_penrose.pyo	6067	0644	edit dl rm
tdemo_planet_and_moon.py	2817	0644	edit dl rm
tdemo_planet_and_moon.pyc	4562	0644	edit dl rm
tdemo_planet_and_moon.pyo	4562	0644	edit dl rm
tdemo_tree.py	1388	0644	edit dl rm
tdemo_tree.pyc	2133	0644	edit dl rm
tdemo_tree.pyo	2133	0644	edit dl rm
tdemo_wikipedia.py	1347	0644	edit dl rm
tdemo_wikipedia.pyc	1986	0644	edit dl rm
tdemo_wikipedia.pyo	1986	0644	edit dl rm
tdemo_yinyang.py	785	0644	edit dl rm
tdemo_yinyang.pyc	1322	0644	edit dl rm
tdemo_yinyang.pyo	1322	0644	edit dl rm
turtle.cfg	160	0644	edit dl rm
turtleDemo.py	10146	0644	edit dl rm
turtleDemo.pyc	10287	0644	edit dl rm
turtleDemo.pyo	10287	0644	edit dl rm
turtledemo_two_canvases.py	862	0644	edit dl rm
turtledemo_two_canvases.pyc	1260	0644	edit dl rm
turtledemo_two_canvases.pyo	1260	0644	edit dl rm

Edit: /usr/lib64/python2.6/Demo/turtle/tdemo_fractalcurves.py (3387B)

"""      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()

cmd: