javascript - How to recreate moving "cloud" background?

Question

I came across this background animation: https://wholefestival.com/artists I would like to recreate and learn to control it, but my javascript knowledge is not enough. Does anyone know how to attack it in a simple way?

The closest I found was this p5 sketch: https://editor.p5js.org/techty/sketches/HUs2dx-vF. Thanks in advance :)

Answer 1

等待大神答复