Hello,
Does anyone know of ways or tutorial that could create something like this?
I found many tutorial on random crossing on a flat or curved surface but can’t find any tutorial on how to create it in 3d volume like this in this photo.
Thank you!
It possibly boils down to having a three-dimensional agent-based simulation with attractors that the particles are controlled by (like gravity) or some sort boundary object that constrains the boids.
You then record their positions though time - their trails -, and given that you let the simulation run long enough and with an appropriately high agent count, you should end up with a rat’s nest like this. There are lots of threads about these sorts of things here on the forum. Simply search for the highlighted keywords.
It could be done with that
https://www.grasshopper3d.com/m/discussion?id=2985220%3ATopic%3A1279038
Looks way different to me.
Yes
But you can get that without lot of work. it is juts a sphere with 2 paths.
By the way it seems to be a Daniel Widrig job
http://danielwidrig.com/
https://www.instagram.com/danielwidrig/
Sure, you can get something similar but the inside is hollow, instead of “structural”. 
Thank you replying but I’m looking for a way to fill up the whole space in the middle, not hollow…
It could be good you post a geometry and some constrain on the curves. Is it for rendering, 3d printing … ? It is very easy to make sort of ray reflection (polylines).
You better choose a good agent plugin (QUELEA, culebra) and work with it.
