easeOutElastic

function easeOutElastic(x) {

  const c4 = (2 * Math.PI) / 3;

​

  return x === 0

    ? 0

    : x === 1

    ? 1

    : pow(2, -10 * x) * sin((x * 10 - 0.75) * c4) + 1;

}

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(100);

}

​

function draw() {

  background(0);

  translate(width/2,height/2);

  for(let i = 0 ; i<20; i++){

    push();

      rotate(2*PI/20*i);

      let ratio = map((frameCount*5 + i * 2)%width,0,width,0,1);

      let result = easeOutElastic(ratio);

      ellipse(0, 200*result, 100);

    pop();

  }

  // ellipse(mouseX, mouseY, 20, 20);

}