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webxr_xr_haptics.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js xr - haptics</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> xr - haptics
</div>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { XRButton } from 'three/addons/webxr/XRButton.js';
import { XRControllerModelFactory } from 'three/addons/webxr/XRControllerModelFactory.js';
let container;
let camera, scene, renderer;
let controller1, controller2;
let controllerGrip1, controllerGrip2;
const box = new THREE.Box3();
const controllers = [];
const oscillators = [];
let controls, group;
let audioCtx = null;
// minor pentatonic scale, so whichever notes is stricken would be more pleasant
const musicScale = [ 0, 3, 5, 7, 10 ];
init();
function initAudio() {
if ( audioCtx !== null ) {
return;
}
audioCtx = new ( window.AudioContext || window.webkitAudioContext )();
function createOscillator() {
// creates oscillator
const oscillator = audioCtx.createOscillator();
oscillator.type = 'sine'; // possible values: sine, triangle, square
oscillator.start();
return oscillator;
}
oscillators.push( createOscillator() );
oscillators.push( createOscillator() );
window.oscillators = oscillators;
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x808080 );
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 10 );
camera.position.set( 0, 1.6, 3 );
controls = new OrbitControls( camera, container );
controls.target.set( 0, 1.6, 0 );
controls.update();
const floorGeometry = new THREE.PlaneGeometry( 4, 4 );
const floorMaterial = new THREE.ShadowMaterial( { opacity: 0.25, blending: THREE.CustomBlending, transparent: false } );
const floor = new THREE.Mesh( floorGeometry, floorMaterial );
floor.rotation.x = - Math.PI / 2;
floor.receiveShadow = true;
scene.add( floor );
scene.add( new THREE.HemisphereLight( 0xbcbcbc, 0xa5a5a5, 3 ) );
const light = new THREE.DirectionalLight( 0xffffff, 3 );
light.position.set( 0, 6, 0 );
light.castShadow = true;
light.shadow.camera.top = 2;
light.shadow.camera.bottom = - 2;
light.shadow.camera.right = 2;
light.shadow.camera.left = - 2;
light.shadow.mapSize.set( 4096, 4096 );
scene.add( light );
group = new THREE.Group();
group.position.z = - 0.5;
scene.add( group );
const BOXES = 10;
for ( let i = 0; i < BOXES; i ++ ) {
const intensity = ( i + 1 ) / BOXES;
const w = 0.1;
const h = 0.05 * i + 0.5;
const geometry = new THREE.BoxGeometry( w, h, w );
geometry.translate( 0, h / 2, 0 );
const material = new THREE.MeshStandardMaterial( {
color: new THREE.Color( intensity, 0.1, 0.1 ),
roughness: 0.7,
metalness: 0.0
} );
const object = new THREE.Mesh( geometry, material );
object.position.x = ( i - 5 ) * ( w + 0.05 );
object.castShadow = true;
object.receiveShadow = true;
object.userData = {
index: i + 1,
intensity: intensity
};
group.add( object );
}
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setAnimationLoop( animate );
renderer.xr.addEventListener( 'sessionstart', () => initAudio() );
renderer.shadowMap.enabled = true;
renderer.xr.enabled = true;
container.appendChild( renderer.domElement );
document.body.appendChild( XRButton.createButton( renderer ) );
// controllers
controller1 = renderer.xr.getController( 0 );
scene.add( controller1 );
controller2 = renderer.xr.getController( 1 );
scene.add( controller2 );
const controllerModelFactory = new XRControllerModelFactory();
controllerGrip1 = renderer.xr.getControllerGrip( 0 );
controllerGrip1.addEventListener( 'connected', controllerConnected );
controllerGrip1.addEventListener( 'disconnected', controllerDisconnected );
controllerGrip1.add( controllerModelFactory.createControllerModel( controllerGrip1 ) );
scene.add( controllerGrip1 );
controllerGrip2 = renderer.xr.getControllerGrip( 1 );
controllerGrip2.addEventListener( 'connected', controllerConnected );
controllerGrip2.addEventListener( 'disconnected', controllerDisconnected );
controllerGrip2.add( controllerModelFactory.createControllerModel( controllerGrip2 ) );
scene.add( controllerGrip2 );
//
window.addEventListener( 'resize', onWindowResize );
}
function controllerConnected( evt ) {
controllers.push( {
gamepad: evt.data.gamepad,
grip: evt.target,
colliding: false,
playing: false
} );
}
function controllerDisconnected( evt ) {
const index = controllers.findIndex( o => o.controller === evt.target );
if ( index !== - 1 ) {
controllers.splice( index, 1 );
}
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function handleCollisions() {
for ( let i = 0; i < group.children.length; i ++ ) {
group.children[ i ].collided = false;
}
for ( let g = 0; g < controllers.length; g ++ ) {
const controller = controllers[ g ];
controller.colliding = false;
const { grip, gamepad } = controller;
const sphere = {
radius: 0.03,
center: grip.position
};
const supportHaptic = 'hapticActuators' in gamepad && gamepad.hapticActuators != null && gamepad.hapticActuators.length > 0;
for ( let i = 0; i < group.children.length; i ++ ) {
const child = group.children[ i ];
box.setFromObject( child );
if ( box.intersectsSphere( sphere ) ) {
child.material.emissive.b = 1;
const intensity = child.userData.index / group.children.length;
child.scale.setScalar( 1 + Math.random() * 0.1 * intensity );
if ( supportHaptic ) {
gamepad.hapticActuators[ 0 ].pulse( intensity, 100 );
}
const musicInterval = musicScale[ child.userData.index % musicScale.length ] + 12 * Math.floor( child.userData.index / musicScale.length );
oscillators[ g ].frequency.value = 110 * Math.pow( 2, musicInterval / 12 );
controller.colliding = true;
group.children[ i ].collided = true;
}
}
if ( controller.colliding ) {
if ( ! controller.playing ) {
controller.playing = true;
oscillators[ g ].connect( audioCtx.destination );
}
} else {
if ( controller.playing ) {
controller.playing = false;
oscillators[ g ].disconnect( audioCtx.destination );
}
}
}
for ( let i = 0; i < group.children.length; i ++ ) {
const child = group.children[ i ];
if ( ! child.collided ) {
// reset uncollided boxes
child.material.emissive.b = 0;
child.scale.setScalar( 1 );
}
}
}
function animate() {
handleCollisions();
renderer.render( scene, camera );
}
</script>
</body>
</html>