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Nama	Ukuran	Aksi
__pycache__	-	Open
bytedesign.py	4.16 MB	View DL Edit
chaos.py	951 B	View DL Edit
clock.py	3.24 MB	View DL Edit
colormixer.py	1.31 MB	View DL Edit
forest.py	2.91 MB	View DL Edit
fractalcurves.py	3.41 MB	View DL Edit
lindenmayer.py	2.39 MB	View DL Edit
minimal_hanoi.py	2.02 MB	View DL Edit
nim.py	6.36 MB	View DL Edit
paint.py	1.27 MB	View DL Edit
peace.py	1.05 MB	View DL Edit
penrose.py	3.31 MB	View DL Edit
planet_and_moon.py	2.77 MB	View DL Edit
rosette.py	1.33 MB	View DL Edit
round_dance.py	1.76 MB	View DL Edit
sorting_animate.py	4.95 MB	View DL Edit
tree.py	1.38 MB	View DL Edit
turtle.cfg	160 B	View DL Edit
two_canvases.py	1.09 MB	View DL Edit
yinyang.py	835 B	View DL Edit
__init__.py	314 B	View DL Edit
__main__.py	15.01 MB	View DL Edit

Edit file: /opt/alt/python313/lib64/python3.13/turtledemo/lindenmayer.py

#! /opt/alt/python313/bin/python3.13
"""       turtle-example-suite:

xtx_lindenmayer_indian.py

Each morning women in Tamil Nadu, in southern
India, place designs, created by using rice
flour and known as kolam on the thresholds of
their homes.

These can be described by Lindenmayer systems,
which can easily be implemented with turtle
graphics and Python.

Two examples are shown here:
(1) the snake kolam
(2) anklets of Krishna

Taken from Marcia Ascher: Mathematics
Elsewhere, An Exploration of Ideas Across
Cultures

"""
################################
# Mini Lindenmayer tool
###############################

from turtle import *

def replace( seq, replacementRules, n ):
    for i in range(n):
        newseq = ""
        for element in seq:
            newseq = newseq + replacementRules.get(element,element)
        seq = newseq
    return seq

def draw( commands, rules ):
    for b in commands:
        try:
            rules[b]()
        except TypeError:
            try:
                draw(rules[b], rules)
            except:
                pass

def main():
    ################################
    # Example 1: Snake kolam
    ################################

def r():
        right(45)

def l():
        left(45)

def f():
        forward(7.5)

snake_rules = {"-":r, "+":l, "f":f, "b":"f+f+f--f--f+f+f"}
    snake_replacementRules = {"b": "b+f+b--f--b+f+b"}
    snake_start = "b--f--b--f"

drawing = replace(snake_start, snake_replacementRules, 3)

reset()
    speed(3)
    tracer(1,0)
    ht()
    up()
    backward(195)
    down()
    draw(drawing, snake_rules)

from time import sleep
    sleep(3)

################################
    # Example 2: Anklets of Krishna
    ################################

def A():
        color("red")
        circle(10,90)

def B():
        from math import sqrt
        color("black")
        l = 5/sqrt(2)
        forward(l)
        circle(l, 270)
        forward(l)

def F():
        color("green")
        forward(10)

krishna_rules = {"a":A, "b":B, "f":F}
    krishna_replacementRules = {"a" : "afbfa", "b" : "afbfbfbfa" }
    krishna_start = "fbfbfbfb"

reset()
    speed(0)
    tracer(3,0)
    ht()
    left(45)
    drawing = replace(krishna_start, krishna_replacementRules, 3)
    draw(drawing, krishna_rules)
    tracer(1)
    return "Done!"

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

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