var tracker

var w = 400,

  h = 400;

​

function setup() {

  capture = createCapture({

    audio: false,

    video: {

      width: w,

      height: h

    }

  }, function() {

    console.log('capture ready.')

  });

  createCanvas(w, h);

  capture.size(w, h);

  capture.hide();

​

  tracker = new clm.tracker();

  tracker.init();

  tracker.start(capture.elt);

}

​

function draw() {

  image(capture, 0, 0, w, h);

  var positions = tracker.getCurrentPosition();

​

  // Check if there is anything in the positions array

  // before trying to use it for anything.

  if (positions.length > 0) {

    noStroke();

    fill("red");

    // the numbers at positions[62] represent the tip of the nose

    ellipse(positions[62][0], positions[62][1], 25, 40);

  }

}