FM / turtledemo

/usr/lib64/python3.12/turtledemo

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
bytedesign.py	4248	0755	edit dl rm
chaos.py	951	0644	edit dl rm
clock.py	3304	0755	edit dl rm
colormixer.py	1339	0644	edit dl rm
forest.py	2966	0755	edit dl rm
fractalcurves.py	3473	0755	edit dl rm
lindenmayer.py	2434	0755	edit dl rm
minimal_hanoi.py	2051	0755	edit dl rm
nim.py	6513	0644	edit dl rm
paint.py	1291	0755	edit dl rm
peace.py	1066	0755	edit dl rm
penrose.py	3380	0755	edit dl rm
planet_and_moon.py	2825	0755	edit dl rm
rosette.py	1361	0644	edit dl rm
round_dance.py	1804	0644	edit dl rm
sorting_animate.py	5053	0755	edit dl rm
tree.py	1401	0755	edit dl rm
turtle.cfg	160	0644	edit dl rm
two_canvases.py	1119	0644	edit dl rm
yinyang.py	821	0755	edit dl rm
__init__.py	314	0644	edit dl rm
__main__.py	15384	0755	edit dl rm

Edit: /usr/lib64/python3.12/turtledemo/lindenmayer.py (2434B)

#! /usr/bin/python3.12
"""       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()

#! /usr/bin/python3.12 """ 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()