constructor(a, b) {

    this.x = 350;

    this.y = 300;

    this.a = a;

    this.b = b;

  }

  move() {

    this.x = this.x + this.a;

    this.y = this.y + this.b;

  }

  show() {

    stroke(255);

    strokeWeight(4);

    noFill();

    ellipse(this.x, this.y, 50, 50);

  }

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

  p1 = new circir(2, 0);

  p2 = new circir(-2, 0);

  p3 = new circir(0, 2);

  p4 = new circir(0, -2);

}

​

function draw() {

  background(0);

​

  p1.move();

  p1.show();

​

  p2.move();

  p2.show();

​

  p3.move();

  p3.show();

​

  p4.move();

  p4.show();

}

​