I've seen this effect many times in videos and on websites and I wanted to make my own.

Procedure

• Points start at center with random velocity.
• Points repel each other.
• Borders of the screen repel points.
• Points receive random vector of velocity every frame.
• Every few frames links between points are calulated using the Delaunator library.
• The cursor has small gravity and is able to trap a point in place.

Notes

I like the initial spread of points, they always form a circle despite their random velocity.