let xincrement = 0.01;

​

function setup() {

  createCanvas(710, 710);

  background(0);

  noStroke();

}

​

function draw() {

  // Create an alpha blended background

  fill(0, 10);

  rect(0, 0, width, height);

​

  //let n = random(0,width);  // Try this line instead of noise

​

  // Get a noise value based on xoff and scale

  // it according to the window's width

  let n = noise(xoff) * width;

​

  // With each cycle, increment xoff

  xoff += xincrement;

​

  // Draw the ellipse at the value produced by perlin noise

  fill(200);

  ellipse(n, height / 2, 64, 64);

}