Issue #10199: Moved Demo/turtle under Lib/

1 files changed, 0 insertions, 138 deletions

diff --git a/Demo/turtle/tdemo_fractalcurves.py b/Demo/turtle/tdemo_fractalcurves.py
deleted file mode 100644
index c49f8b8..0000000
--- a/Demo/turtle/tdemo_fractalcurves.py
+++ /dev/null
@@ -1,138 +0,0 @@
-#!/usr/bin/env python3
-"""      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.getscreen().tracer(1,0)
-    ft.pu()
-
-    size = 6
-    ft.setpos(-33*size, -32*size)
-    ft.pd()
-
-    ta=clock()
-    ft.fillcolor("red")
-    ft.begin_fill()
-    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.end_fill()
-    tb=clock()
-    res =  "Hilbert: %.2fsec. " % (tb-ta)
-
-    sleep(3)
-
-    ft.reset()
-    ft.speed(0)
-    ft.ht()
-    ft.getscreen().tracer(1,0)
-
-    ta=clock()
-    ft.color("black", "blue")
-    ft.begin_fill()
-    ft.fractalgon(3, 250, 4, 1)
-    ft.end_fill()
-    ft.begin_fill()
-    ft.color("red")
-    ft.fractalgon(3, 200, 4, -1)
-    ft.end_fill()
-    tb=clock()
-    res +=  "Koch: %.2fsec." % (tb-ta)
-    return res
-
-if __name__  == '__main__':
-    msg = main()
-    print(msg)
-    mainloop()