"Lindenmayer Systems, Fractals, and Plants" (PRUSINKIEWICZ; HANAN, 1989) https://link.springer.com/book/10.1007/978-1-4757-1428-9
#LSystem
![Preface
L-systems are a mathematical formalism which was proposed by Aristid Lindenmayer in 1968 as a foundation for an axiomatic theory of development. The notion promptly attracted the attention of computer scientists, who investigated L-systems from the viewpoint of formal language theory. This theoretical line of research was pursued very actively in the seventies, resulting in over one thousand publications. A different research direction was taken in 1984 by Alvy Ray Smith, who proposed L-systems as a tool for synthesizing realistic images of plants and pointed out the relationship between L-systems and the concept of fractals introduced by Benoit Mandelbrot. The work by Smith inspired our studies of the application of L-systems to computer graphics. Originally, we were interested in two problems:
• Can L-systems be used as a realistic model of plant species found in nature?
• Can L-systems be applied to generate images of a wide class of fractals?
It turned out that both questions had affirmative answers. Subsequently we found that L-systems could be applied to other areas, such as the generation of tilings, reproduction of a geometric art form from East India, and synthesis of musical scores based on an interpretation of fractals. This book collects our results related to the graphical applications of 1systems. It is a corrected version of the notes which we prepared for the ACM SIGGRAPH '88 course on fractals. [...]](https://files.mastodon.social/cache/media_attachments/files/114/359/672/596/105/042/original/e549a5ecffb77c9e.png)
Code at: https://github.com/villares/sketch-a-day/tree/main/2025/sketch_2025_04_06
More sketch-a-day: https://abav.lugaralgum.com/sketch-a-day
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#LSystem #Processing #Python #py5 #CreativeCoding
Code at: https://github.com/villares/sketch-a-day/tree/main/2025/sketch_2025_04_05
More sketch-a-day: https://abav.lugaralgum.com/sketch-a-day
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#LSystem #Processing #Python #py5 #CreativeCoding
Code at: https://github.com/villares/sketch-a-day/tree/main/2025/sketch_2025_04_03
More sketch-a-day: https://abav.lugaralgum.com/sketch-a-day
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@liaizon thank you!
If you are curious, I added some references about L-Systems to this post: https://github.com/py5coding/py5generator/discussions/555
#LSystem Code at: https://github.com/villares/sketch-a-day/tree/main/2025/sketch_2025_04_02
More sketch-a-day: https://abav.lugaralgum.com/sketch-a-day
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https://wise.com/pay/me/alexandrev562 #Processing #Python #py5 #CreativeCoding
#RUG / work in progress / a variable grid system for pixel placement. Mostly ready to hold #hitomezashi, #cellularautoma and #lsystem patterns.
Each pattern is fed and feeds the other based on 1 and 0 sides sequences when available.
I love to play/create an #LSystem, check discussion at https://github.com/py5coding/py5generator/discussions/555 Code at: https://github.com/villares/sketch-a-day/tree/main/2024/sketch_2024_11_11
More sketch-a-day: https://abav.lugaralgum.com/sketch-a-day
I really need your support to keep going, if you can, donate any amount at: https://www.paypal.com/donate/?hosted_button_id=5B4MZ78C9J724 #Processing #Python #py5 #CreativeCoding
Mathematisch lassen sich komplexe Phänomene oft unerwartet einfach beschreiben. Doch hinter dieser Einfachheit verbergen sich überraschend vielfältige Welten.#KochscheSchneeflocke #Fraktal #Freistetter #FreistettersFormelwelt #AristidLindenmayer #L-System #Mathematik
Freistetters Formelwelt: Die komplexeste Schneeflocke der Welt
Freistetters Formelwelt: Die komplexeste Schneeflocke der Welt
Na moral, um #LSystem em 35 linhas é elegante demais, Processing + Python == <3
regras = {
'X': 'F+[![X]-X!]-F[-FX]+X',
'F': 'FGF',
}
axioma = 'X'
iteracoes = 6
angulo = 25
Foi massa hoje fazer #LSystem com #py5 (#Processing + #Python) do zero no #Sesc. Dá para acompanhar mais ou menos a sequência que fizemos, e ver o código em https://hackmd.io/@villares/sesc-simula-bio
cc @ericof
Quem estiver em #SãoPaulo 14/11, e tiver o privilégio de um par de horas livres à tarde 14h30, vou dar uma atividade com #py5 #Processing + #Python lá no #SescAvPaulista. 14/11 vai ser #LSystem :)
https://www.sescsp.org.br/programacao/simulacoes-biologicas-em-programacao/
axiom = 'X'
rules = {
'X': '[-X][+X][+FX]-FXB',
'F': 'FF',
}
angle = 25 # degrees
iterations = 6
# F -> forward step
# B -> blue circle
https://github.com/villares/sketch-a-day/blob/main/2023/sketch_2023_10_07/sketch_2023_10_07.py
#Processing #LSystem #Python #py5
So, if your #Python team needs some #TeamBuilding "creative" activities, and your firm has a budget for that, you can call me to teach some terrible coding stuff, like how to create plant-like self-similar shapes with #LSystem (https://en.wikipedia.org/wiki/L-system). Or maybe some #PerlinNoise textures? There is no better way of spending corporate money than contracting me to show dubious graphics code that is almost impossible to test! Don't waste this opportunity!
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