​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(0);

​

  // Rotating Circles

  for (let i = 0; i < width; i += 50) {

    let j = 0;  

    while (j < height) {

      let x = i + 25;

      let y = j + 25;

      // Changing size of circles

      let size = 30 + sin(speed + i * 0.05 + j * 0.05) * 20;

      fill((speed * 20 + i) % 255, (speed * 30 + j) % 255, 200);//random colouring

      ellipse(x + sin(speed + i * 0.1) * 20, y + cos(speed + j * 0.1) * 20, size);

​

      j += 50;

    }

  }

​

  // Lines

  let i = 0;  

  while (i < width) {

    stroke(255, 100, 150);

    strokeWeight(2);

​

    // moving lines

    line(i, 0, i + sin(speed + i * 0.2) * 50, height);

    line(0, i, width, i + cos(speed + i * 0.2) * 50);

    i += 20;

  }

​

  speed += 0.03;  //speed control

}

​