// https://gist.github.com/shiffman/3b4e3b7bf350eea16589f4f0d019da06

​

let victors = [];

let factor = 100;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  for (let i = 0; i < 500; i++) {

    victors[i] = createVector(

      random(-width * factor, width * factor),

      random(-height * factor, height * factor),

      random(width)

    );

  }

}

​

function draw() {

  background(0);

​

  translate(width / 2, height / 2);

​

  for (let v of victors) {

    let x = v.x / v.z;

    let y = v.y / v.z;

    let maxSize = map(mouseY, 0, 400, 0,50);

    let d = map(v.z, 0, width, maxSize, 1);

​

    fill(x,y,x*y,10*d);

    strokeWeight(0.5);

    stroke(x, y, x*y);

    circle(x, y, d);

​

    v.z -= map(mouseX, 0,400,-5,5);

    if (v.z < 1) {

      v.x = random(-width * factor, width * factor);

      v.y = random(-height * factor, height * factor);

      v.z = random(width);

    }

  }

}

​