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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js ar - plane detection</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> ar - plane detection<br/>(Chrome Android 81+)
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/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 { ARButton } from 'three/addons/webxr/ARButton.js';
let camera, scene, renderer;
let controller;
init();
animate();
const planesAdded = new Set();
function init() {
const container = document.createElement( 'div' );
document.body.appendChild( container );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 20 );
const light = new THREE.HemisphereLight( 0xffffff, 0xbbbbff, 1 );
light.position.set( 0.5, 1, 0.25 );
scene.add( light );
//
renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.xr.enabled = true;
container.appendChild( renderer.domElement );
//
document.body.appendChild( ARButton.createButton( renderer, {
requiredFeatures: ['plane-detection']
} ) );
//
window.addEventListener( 'resize', onWindowResize );
renderer.xr.addEventListener( 'sessionstart', function () {
camera.position.set( 0, 0, 0 );
} );
renderer.xr.addEventListener( 'planeadded', function (e) {
console.log( "plane added", e.data )
} );
renderer.xr.addEventListener( 'planeremoved', function (e) {
console.log( "plane removed", e.data )
} );
renderer.xr.addEventListener( 'planechanged', function (e) {
console.log( "plane changed", e.data)
} );
renderer.xr.addEventListener( 'planesdetected', function (e) {
const detectedPlanes = e.data;
const referenceSpace = renderer.xr.getReferenceSpace();
console.log( `Detected ${detectedPlanes.size} planes` );
detectedPlanes.forEach( plane => {
if ( planesAdded.has( plane ) ) return;
planesAdded.add( plane );
const frame = renderer.xr.getFrame();
const planePose = frame.getPose( plane.planeSpace, referenceSpace );
const planeGeometry = new THREE.BufferGeometry();
const polygon = plane.polygon;
let minX = Number.MAX_SAFE_INTEGER;
let maxX = Number.MIN_SAFE_INTEGER;
let minZ = Number.MAX_SAFE_INTEGER;
let maxZ = Number.MIN_SAFE_INTEGER;
polygon.forEach( point => {
minX = Math.min( minX, point.x );
maxX = Math.max( maxX, point.x );
minZ = Math.min( minZ, point.z );
maxZ = Math.max( maxZ, point.z );
} );
const width = maxX - minX;
const height = maxZ - minZ;
const boxMesh = new THREE.Mesh(
new THREE.BoxGeometry( width, 0.01, height ),
new THREE.MeshBasicMaterial( { color: 0xffffff * Math.random() } )
);
boxMesh.matrixAutoUpdate = false;
boxMesh.matrix.fromArray( planePose.transform.matrix );
scene.add( boxMesh );
} );
} );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function animate() {
renderer.setAnimationLoop( render );
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>