L-System

#1

Post by lemonspat » Thu, Dec 17, 2020, 1:20 PM UTC

L-System
en.wikipedia.org

Re: L-System

#2

Post by Rabidgremlin » Thu, Dec 17, 2020, 7:13 PM UTC

If you are interested in some code and more examples: http://blog.rabidgremlin.com/2014/12/09/procedural-content-g...

Re: L-System

#3

Post by eindiran » Thu, Dec 17, 2020, 9:15 PM UTC

Rabidgremlin wrote: post #2

If you are interested in some code and more examples: http://blog.rabidgremlin.com/2014/12/09/procedural-content-g...

This book is also very good: http://algorithmicbotany.org/papers/#abop

Re: L-System

#4

Post by chrisco255 » Sat, Dec 19, 2020, 8:50 AM UTC

L systems are so magical to me. Opened up the world of procedural generation to me. And I look at trees differently now as a result. I also see fractals everywhere in the real world.

Re: L-System

#5

Post by pulkitsh1234 » Sat, Dec 19, 2020, 8:52 AM UTC

Aren't L-systems just fractals ?

Also, if someone can expand, what do you think of Stephen Wolfram's theory of everything[0] which to me seems quite similar to L-systems (I might be completely wrong here).

Has anyone combined cellular automata and L-systems, will that lead to....simulating evolution?

[0] https://writings.stephenwolfram.com/2020/04/finally-we-may-h... (Read How it Works section).

Re: L-System

#6

Post by bbotond » Sat, Dec 19, 2020, 8:56 AM UTC

pulkitsh1234 wrote: post #5

Aren't L-systems just fractals ? Also, if someone can expand, what do you think of Stephen Wolfram's theory of everything[0] which to me seems quite similar to L-systems (I might be completely wrong here). Has anyone combined cellular automata and L-systems, will that lead to....simulating evolution? [0] https://writings.stephenwolfram.com/2020/04/finally-we-may-h... (Read How it Works section).

L-systems can be used to describe fractals but they aren’t fractals. They are formal languages.

Re: L-System

#7

Post by kimburgess » Sat, Dec 19, 2020, 9:09 AM UTC

Rabidgremlin wrote: post #2

If you are interested in some code and more examples: http://blog.rabidgremlin.com/2014/12/09/procedural-content-g...

Daniel Shiffman also delves into them in the excellent Nature of Code: https://natureofcode.com/book/chapter-8-fractals/.

Re: L-System

#8

Post by pkrumins » Sat, Dec 19, 2020, 9:34 AM UTC

I and my team made this: https://onlinemathtools.com/l-system-generator. You can enter the axiom and the rewrite rules and get a visualization of the grammar. Also, in the examples section, we added 9 most popular fractals.

Re: L-System

#9

Post by pulkitsh1234 » Sat, Dec 19, 2020, 10:06 AM UTC

bbotond wrote: post #6

pulkitsh1234 wrote: post #5

Aren't L-systems just fractals ? Also, if someone can expand, what do you think of Stephen Wolfram's theory of everything[0] which to me seems quite similar to L-systems (I might be completely wrong here). Has anyone combined cellular automata and L-systems, will that lead to....simulating evolution? [0] https://writings.stephenwolfram.com/2020/04/finally-we-may-h... (Read How it Works section).

L-systems can be used to describe fractals but they aren’t fractals. They are formal languages.

Thanks, so L-Systems are to Fractals as Code is to Application.

Re: L-System

#10

Post by squirrelmaker » Sat, Dec 19, 2020, 10:52 AM UTC

For quick 2D sketching of an L-system design https://inkscape.org/ (Extensions->Render->L-System on menu in Inkscape) From an older version of Inkscape, but still similar functionality: https://thebrickinthesky.wordpress.com/2013/03/17/l-systems-...