with the new concept of free coding : p5Js : https://p5js.org
After Processing (Java), p5Js (JavaScript), the new concept : p5jS Web Editor
All is done inside your navigator !
And any users can run your code and interact directly and I suppose modify it for themselve! ;)
Tell me if yes!
The code
https://editor.p5js.org/Pilou/sketches/SyG4qmVqQ
code not documented but very small: see video end's post! ;)

Full Screen
https://editor.p5js.org/full/SyG4qmVqQ

Embeded forum...if someone can see for the noframe ? Original is 1024 * 512

<iframe width="512" height="256" src="https://editor.p5js.org/embed/SyG4qmVqQ" frameborder="no"></iframe>

do you see the image following ?


The Processing, p5Js Master David Shiffman! ;)