segway balancing

with power HUD

by rayon256

HTML

<div id="info">segway control
    <br/>Press Arrow Keys</div>
<script src="http://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js">
    
</script>
<script src="https://dl.dropboxusercontent.com/u/3587259/Code/Threejs/OrbitControls.js">
    
</script>
<script src="http://jyunming-chen.github.io/tutsplus/js/KeyboardState.js"></script>

CSS

#info {
    position: absolute;
    top: 0px;
    width: 100%;
    padding: 10px;
    text-align: center;
    color: #ffff00
}
body {
    overflow: hidden;
}

JavaScript

var camera, scene, renderer, light, controls;
var keyboard = new KeyboardState();
var jsonModel;
var pilot;
var xangle = 0;
var zangle = 0;
var sceneHUD, cameraHUD;
var barA, barB;
var sa, sb;

init();
animate();

function initHUD() {
    sceneHUD = new THREE.Scene();
    cameraHUD = new THREE.OrthographicCamera(-10, 10, 10, -10, 1, 100);
    cameraHUD.position.z = 5;
    cameraHUD.lookAt(new THREE.Vector3(0, 0, 0));

    barA = new THREE.Object3D();
    powerA = new THREE.Mesh(new THREE.PlaneGeometry(4, 1),
    new THREE.MeshBasicMaterial({
        color: 0xff1233,
        opacity: 0.5,
        side: THREE.DoubleSide,
        transparent: true
    }));
    powerA.position.set(-2, 2, 0);
    barA.rotation.y = Math.PI;
    barA.add(powerA);
    sceneHUD.add(barA);
    

    barB = new THREE.Object3D();
    powerB = new THREE.Mesh(new THREE.PlaneGeometry(1, 4),
    new THREE.MeshBasicMaterial({
        color: 0x2212ff,
        opacity: 0.5,
        side: THREE.DoubleSide,
        transparent: true
    }));
    powerB.position.set(2, 2, 0);
    barB.add(powerB);
    sceneHUD.add(barB);
}

function init() {

    initHUD();

    scene = new THREE.Scene();
    pilot = new THREE.Object3D();
    scene.add(pilot);

    camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
    camera.position.z = 500;
    scene.add(camera);

    light = new THREE.PointLight(0xffffff);
    light.position.set(100, 300, 200);
    scene.add(light);
    var ambientLight = new THREE.AmbientLight(0x111111);
    scene.add(ambientLight);

    var gridXZ = new THREE.GridHelper(100, 10);
    gridXZ.setColors(new THREE.Color(0xff0000), new THREE.Color(0xffffff));
    scene.add(gridXZ);

    renderer = new THREE.WebGLRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.setClearColor(0x888888);
    document.body.appendChild(renderer.domElement);
    renderer.autoClear = false;

    controls = new THREE.OrbitControls(camera,...