let offset = 10;

let num = 15;

let vel = 0;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  translate(width/2, height/2);

  for (let i=0; i<num; i++) {

    let x = i*offset/2;

    ellipse(x, 0, size-(i*offset), size-(i*offset))

  }

​

}