Etienne Jacob
I finally wrote an article detailing the techniques I've been using to make organic simulations. It ranges from the classic physarum algorithm to some of my more advanced tricks.
I tried to explain things clearly, and it includes interactive parts. I hope you enjoy it!
https://bleuje.com/physarum-explanation/
Algorithms for making interesting organic simulations

Article explaining simulation algorithms that produce complex organic behaviours, starting with the classic physarum algorithm from Jeff Jones.

Jul 13, 2025 at 9:53amWeb
Show threadEtienne JacobJul 19, 2025
Thanks for the feedback about this article, I hope to see more art using these algorithms.
Here are some high resolution screenshots, just added to the article:
Show threadt s r o n oJul 19, 2025
@bleuje beautiful stuff
Show thread🌈EikaronJul 20, 2025
@bleuje Could you add some image descriptions? :) I'd love to share these, they look amazing, but I don't boost without alt text
Show threadEtienne JacobJul 20, 2025
@eikaron added alt text. I'm not inspired to give good descriptions. I thought the article in the original post is a better description for what the images contain.
Show threadAlexandre B A Villares 🐍Jul 13, 2025
@bleuje wow!
Show threadTunapunkJul 13, 2025
@bleuje Beautiful. Do you per chance know anything on the topic of organic/cell/plant growth?
Show threadEtienne JacobJul 13, 2025
@wasamasa thank you!
I know nothing more than what I say there, I've just been experimenting artistically with the algorithm. This is quite embarrassing but I haven't even read most of the Jeff Jones article!
I should learn about the literature
Show threadgooseyardJul 13, 2025
@bleuje
Inspiring. Thanks for the detail of your notes, rich links and sharing.
Show threadMazzoJul 13, 2025

@bleuje this 👀 .. this is so cool; thx for sharing 🥰

love the interactive explaination  

Show threadEtienne JacobJul 13, 2025
@Mazzo you're welcome!
Show threadMazzoJul 13, 2025

@bleuje
oh! this is lovely as well 🔥

created with 👌
https://apps.amandaghassaei.com/gpu-io/examples/physarum

Show threadEtienne JacobJul 13, 2025
@Mazzo yes it's great, I only discovered it one or two days ago. Perfect to show the Jeff Jones algorithm results.
Show threadJeff MenterJul 13, 2025
@bleuje Amazing article and beautiful work, Etienne!
Show threadjonJul 13, 2025
@bleuje excellent article, very clear and concise and so cool to read.Thank you very much and kudos!
Show threadEtienne JacobJul 13, 2025
@jon maybe too concise now that I think about it, like I don't even say anything about the key formulas from x
Show threadjonJul 13, 2025

@bleuje I really liked the fact you went straight to showing examples and how your presentation builds up naturally from the base case to adding more parameters. I feel that you did an excellent job conveying the key concepts and giving a clear understanding on what is going on. I really love conciseness because it makes essential things pop out. I personally think this article is giving extremely valuable insights and its the kind of write up I value the most when I want to dig into a subject and/or code implementation.

(maybe more technical/in-depth detail could go in separate parts with focus on specific points?
But don't put pressure on yourself. Again kudos for this excellent article.)

Show threadTivadarJul 13, 2025
@bleuje mesmerising!
Show threadjohn grzinichJul 13, 2025
@bleuje This is awesome, thanks!
Show threadOlli HarjolaJul 13, 2025
@bleuje this is very cool!
Show threadKernel Bob Jul 13, 2025

@bleuje Thank you so much! As much as I love your animations, it's much better to get a peek at the algorithms behind the curtain!

I'll be studying this one.

Show threadG'MIC 🎩🐯Jul 14, 2025

@bleuje Thanks, that is very useful. It helped me a lot to re-implement the (basic) algorithm this week-end, and as a result, I've been able to create a new filter for my image retouching software G'MIC.
Thanks again!

https://piaille.fr/@gmic/114853157069599720

G'MIC 🎩🐯 (@[email protected])

Attached: 2 images So here's a new filter for our G'MIC-Qt plug-in, called ▶️ Patterns / Organic Fibers ◀️ . The result of my experiments today. Available for testing, only for users of G'MIC-Qt version 3.6.0_pre (not available for the current stable version 3.5.5). See you soon, for new graphic experiences 😍

Piaille
Show threadJeff PalmerJul 15, 2025
@bleuje This is really great. Nice work! 🙏
Show thread🌈 Lascapi ⁂Jul 17, 2025
Wow! 🤩
Thank you @bleuje ! I love the result you got, even if you "force the behaviour and structure" ;)
Show threadmags?Aug 3, 2025
@bleuje @boggo seems like ur jam!