var yoff1 = 1000;

var boff1 = 0;

var xoff2 = 333;

var yoff2 = 33333;

var boff2 = 33;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(25);

}

​

function draw() {

  blendMode(LIGHTEST);

  let x = map(noise(xoff1), 0, 1, 0, windowWidth);

  let y = map(noise(yoff1), 0, 1, 0, windowHeight);

  let b = map(noise(boff1), 0, 1, 0, 255);

  let d1 = int(dist(x, y, windowWidth-x, windowHeight-y));

  d1 = map(d1, 1, max(windowWidth, windowHeight), 25, 1);

  let x2 = map(noise(xoff2), 0, 1, 0, windowWidth);

  let y2 = map(noise(yoff2), 0, 1, 0, windowHeight);

  let b2 = map(noise(boff2), 0, 1, 0, 255);

  let d2 = int(dist(x2, y2, x, y));

  d2 = map(d2, 1, max(windowWidth, windowHeight), 3, 1);

  noStroke();

  fill(b);

  ellipse(x, y, d1, d1);

  ellipse(windowWidth-x, windowHeight-y, d1, d1);

  fill(b2);

  ellipse(x2, y2, d2, d2);

  xoff1 += 0.002;

  yoff1 += 0.002;

  boff1 += 0.01;

  xoff2 += 0.001;

  yoff2 += 0.001;

  boff2 += 0.005;

}