http://www.booooooom.com/2016/10/03/create-your-own-looping-pixel-confetti-with-boopy/
Check out Andrew Benson’s version (link above), and then make your own! (link below)
https://pixlpa.com/boopy/
“Andrew Benson is a Los Angeles-based artist who creates fun animations and interactive web experiences. His project “Boopy” transforms user’s input strokes into looping pixel confetti. See more gifs below or test it for yourself here!”
