This is a accumulation/mixing of different learned techniques as a 1st attempt as a pure generative art without shader. (Before I was creating shader only visuals). Made with p5js.

In this visual there is a grid populated with walkers randomly moving and the movement values are accumulated in the grid in order to record the direction of the movement for each grid points.

Then thoses recorded movement are used by lines particules, as they can only appear and cross previoully accumulated grid point;
by using very low line alpha values, the accumulation of the line draws give subtle sweet results. I added simples white spheres in order to ease the overall created structure.