City growth example

[TimoL]

please format code with </> button * homework policy * asking questions

Im trying to find a processing example I remember seeing years ago. It was a a bunch of random points that start moving in random directions creating a line behind them.

Points would also randomly spawn along each line and grow perpendicularly forming a new line.

In the end it would resemble a city road map.

Does anyone know what Im talking about? It had very earth colours to it.

[Chrisir]

don’t know

see Converting coding challenge 'Self-avoiding walk backtracing' from p5.js to Processing (Java) - #20 by GoToLoop

keywords: Fractals and L-Systems, Brownian, Walkers

see Examples / Processing.org

[solub]

Hi @TimoL,

Could it be that you are looking for Jared Tarbell’s “Substrate” algorithm ?

If so, there’s a dedicated thread with example code you can find here, on this forum:

Trying to understand the "Substrate" algorithm

Dear all, I would really appreciate if someone could help me decipher some parts of Jared Tarbell’s “substrate” algorithm. For those who are not familiar with this famous sketch, here is a recap in Tarbell’s own words: A single line (known internally as a “crack”) begins drawing itself from some random point in some random direction. The line continues to draw itself until it either (a) hits the edge of the screen or (b) hits another line, at which point it stops and two more lines begin. Th…

For procedural city generation, there’s also this approach from Sean Barrett which is a simplification of Parish and Müller’s Procedural Modeling of Cities (2001) as explained here.

[TimoL]

Amazing!
thanks @solub thats exactly what I was searching for