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<title>three.js xr - dragging</title>
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> xr - dragging
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<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.8.0/dist/es-module-shims.js"></script>
<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;
let raycaster;
const intersected = [];
const tempMatrix = new THREE.Matrix4();
let controls, group;
init();
animate();
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( 6, 6 );
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 = 3;
light.shadow.camera.bottom = - 3;
light.shadow.camera.right = 3;
light.shadow.camera.left = - 3;
light.shadow.mapSize.set( 4096, 4096 );
scene.add( light );
group = new THREE.Group();
scene.add( group );
const geometries = [
new THREE.BoxGeometry( 0.2, 0.2, 0.2 ),
new THREE.ConeGeometry( 0.2, 0.2, 64 ),
new THREE.CylinderGeometry( 0.2, 0.2, 0.2, 64 ),
new THREE.IcosahedronGeometry( 0.2, 8 ),
new THREE.TorusGeometry( 0.2, 0.04, 64, 32 )
];
for ( let i = 0; i < 50; i ++ ) {
const geometry = geometries[ Math.floor( Math.random() * geometries.length ) ];
const material = new THREE.MeshStandardMaterial( {
color: Math.random() * 0xffffff,
roughness: 0.7,
metalness: 0.0
} );
const object = new THREE.Mesh( geometry, material );
object.position.x = Math.random() * 4 - 2;
object.position.y = Math.random() * 2;
object.position.z = Math.random() * 4 - 2;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.setScalar( Math.random() + 0.5 );
object.castShadow = true;
object.receiveShadow = true;
group.add( object );
}
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.shadowMap.enabled = true;
renderer.xr.enabled = true;
container.appendChild( renderer.domElement );
document.body.appendChild( XRButton.createButton( renderer ) );
// controllers
controller1 = renderer.xr.getController( 0 );
controller1.addEventListener( 'selectstart', onSelectStart );
controller1.addEventListener( 'selectend', onSelectEnd );
scene.add( controller1 );
controller2 = renderer.xr.getController( 1 );
controller2.addEventListener( 'selectstart', onSelectStart );
controller2.addEventListener( 'selectend', onSelectEnd );
scene.add( controller2 );
const controllerModelFactory = new XRControllerModelFactory();
controllerGrip1 = renderer.xr.getControllerGrip( 0 );
controllerGrip1.add( controllerModelFactory.createControllerModel( controllerGrip1 ) );
scene.add( controllerGrip1 );
controllerGrip2 = renderer.xr.getControllerGrip( 1 );
controllerGrip2.add( controllerModelFactory.createControllerModel( controllerGrip2 ) );
scene.add( controllerGrip2 );
//
const geometry = new THREE.BufferGeometry().setFromPoints( [ new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, 0, - 1 ) ] );
const line = new THREE.Line( geometry );
line.name = 'line';
line.scale.z = 5;
controller1.add( line.clone() );
controller2.add( line.clone() );
raycaster = new THREE.Raycaster();
//
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onSelectStart( event ) {
const controller = event.target;
const intersections = getIntersections( controller );
if ( intersections.length > 0 ) {
const intersection = intersections[ 0 ];
const object = intersection.object;
object.material.emissive.b = 1;
controller.attach( object );
controller.userData.selected = object;
}
controller.userData.targetRayMode = event.data.targetRayMode;
}
function onSelectEnd( event ) {
const controller = event.target;
if ( controller.userData.selected !== undefined ) {
const object = controller.userData.selected;
object.material.emissive.b = 0;
group.attach( object );
controller.userData.selected = undefined;
}
}
function getIntersections( controller ) {
controller.updateMatrixWorld();
tempMatrix.identity().extractRotation( controller.matrixWorld );
raycaster.ray.origin.setFromMatrixPosition( controller.matrixWorld );
raycaster.ray.direction.set( 0, 0, - 1 ).applyMatrix4( tempMatrix );
return raycaster.intersectObjects( group.children, false );
}
function intersectObjects( controller ) {
// Do not highlight in mobile-ar
if ( controller.userData.targetRayMode === 'screen' ) return;
// Do not highlight when already selected
if ( controller.userData.selected !== undefined ) return;
const line = controller.getObjectByName( 'line' );
const intersections = getIntersections( controller );
if ( intersections.length > 0 ) {
const intersection = intersections[ 0 ];
const object = intersection.object;
object.material.emissive.r = 1;
intersected.push( object );
line.scale.z = intersection.distance;
} else {
line.scale.z = 5;
}
}
function cleanIntersected() {
while ( intersected.length ) {
const object = intersected.pop();
object.material.emissive.r = 0;
}
}
//
function animate() {
renderer.setAnimationLoop( render );
}
function render() {
cleanIntersected();
intersectObjects( controller1 );
intersectObjects( controller2 );
renderer.render( scene, camera );
}
</script>
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