function setup() {

  createCanvas(400, 400, WEBGL);

}

​

function draw() {

  background(0);

  ambientLight(mouseX, 400-mouseY, mouseY);

  translate(mouseX-200,mouseY-200,mouseY-100);

  rotateX(rot);

  rotateY(rot);

  rotateY(mouseX/100);

  rotateX(mouseY/100);

  noStroke();

  fill(255,0,255);

  sphere(60);

  fill(400-mouseX,mouseY,mouseY,150)

  torus(80,10);

  torus(110,15);

  torus(150,15);

  rot = rot + 0.03;

}