piano keyboard

by jmchen

HTML

<div id="info">demo page</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>

CSS

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

JavaScript

//
// piano reference: http://codepen.io/noogn/pen/LAiDz
//
// problem:
// implement 刷琴鍵 event ...
//

var camera, scene, renderer, light, controls;
var keyboard_set, keyC, keyCprim, keyD, keyDprim, keyE, keyEprim;
var raycaster;
var mouse = new THREE.Vector2();
var pickables = [];
var Cdown = false,
    Ddown = false,
    Edown = false;


init();
animate();

function init() {
    scene = new THREE.Scene();

    camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
    camera.position.set(0, 30, 40); // = 50;
    camera.rotation.x = -0.35;
    scene.add(camera);


    keyboard_set = new THREE.Object3D(); // the complete set

    var geometry = new THREE.BoxGeometry(2.5, 1.5, 9);
    var material = new THREE.MeshLambertMaterial();

    keyCprim = new THREE.Mesh(geometry, material);
    keyCprim.position.set(1.25, -0.75, 4.5);
    keyC = new THREE.Object3D();
    keyC.add(keyCprim);
    keyboard_set.add(keyC);

    keyDprim = new THREE.Mesh(geometry, material);
    keyDprim.position.set(1.25 + (2.5 + 0.05), -0.75, 4.5);
    keyD = new THREE.Object3D();
    keyD.add(keyDprim);
    keyboard_set.add(keyD);
    scene.add(keyboard_set);

    pickables.push(keyCprim);
    keyCprim.name = "keyC";
    pickables.push(keyDprim);
    keyDprim.name = "keyD";
    //    pickables.push (keyD); keyD.name = "keyD";
    //  pickables.push (keyE); keyE.name = "keyE";

    light = new THREE.PointLight(0xffffff);
    light.position.set(10, 30, 20);
    scene.add(light);

    var gridXZ = new THREE.GridHelper(50, 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);

    controls = new THREE.OrbitControls(camera, renderer.domElement);

    document.body.appendChild(renderer.domElement);
    window.addEventListener('resize', onWindowResize, false);

    raycaster...