ball = new BallSwing(150, 0, 300, 150, 10)

function setup() {
  // put setup code here
  createCanvas(300,300);
  //frameRate(60);
}

function draw() {
  // put drawing code here
  background(32);
  fill(128);
  stroke(128);
  strokeWeight(2);
  ball.draw();
  ball.update();
}