let angleVel = 2;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(50);

  noStroke();

  angle += angleVel;

  translate(width/2, height/2);

  rotate(radians(angle));

  ellipse(-30, -30, 30, 30);

  ellipse(30, -30, 30, 30);

  ellipse(-30, 30, 30, 30);

  ellipse(30, 30, 30, 30);

}