createCanvas(800, 800);

  noStroke();

  colorMode(HSB);

  x = random(0, 360);

  y = random(0, 100);

  rectMode(CENTER);

}

​

function draw() {

​

  let grey = (map(mouseX, 0, width, 0, 100));

  background(0, 0, grey);

​

  let mod = (map(mouseY, height, 0, 10, 100));

​

  fill(x, y, mod);

  ellipse(width / 2, height / 2, width / 2, height / 2);

​

  fill(y, mod, x);

  ellipse(width / 2, height / 2, width / 5, height / 5);

​

  fill(x, mod, y);

  arc(width / 2, height / 2, width / 2, height / 2, 0, PI);

​

}

​

function keyPressed() {

  if (key == 's' || key == 'S') saveCanvas();

}

​

function mousePressed() {

  x = random(0, 360);

  y = random(0, 100);

  draw();

}