index.js

/* global GazeClient */

import Logger from "./utils/Logger.js";
import StarGazer from "./game/StarGazer.js";
import GazePoint from "./game/GazePoint.js";

var gclient = new GazeClient();

function init() {
  Logger.enable();
  initGazeClient();
  initStarGazer();
}

function initGazeClient() {
  gclient.connect("ws://localhost:8001/gaze");
  gclient.addEventListener("connectionopened", onConnected);
  gclient.addEventListener("dataavailable", onGazeDataAvailable);
  gclient.addEventListener("connectionclosed", onDisconnected);
}

function initStarGazer() {
  StarGazer.init({
    canvas: document.querySelector("canvas"),
    fps: 60,
    showFPS: true,
    width: 800,
    height: 800,
  });
}

function onConnected(event) {
  console.log(event);
}

function onGazeDataAvailable(event) {
  let eyeX = (event.data.leftEyeX + event.data.rightEyeX) / 2,
    eyeY = (event.data.leftEyeY + event.data.rightEyeY) / 2,
    createdAt = event.data.trackerTimeStamp,
    gazePoint = new GazePoint(eyeX, eyeY, createdAt);
  StarGazer.onGazeUpdate(gazePoint);
}

function onDisconnected(event) {
  console.log(	event);
}

init();