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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js ar - plane detection</title>
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+ <meta charset="utf-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
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+ <link type="text/css" rel="stylesheet" href="main.css">
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+ </head>
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+ <body>
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+
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> ar - plane detection<br/>(Chrome Android 81+)
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+ </div>
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+
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+ <!-- Import maps polyfill -->
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+ <!-- Remove this when import maps will be widely supported -->
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+ <script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
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+
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+ <script type="importmap">
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+ {
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+ "imports": {
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+ "three": "../build/three.module.js",
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+ "three/addons/": "./jsm/"
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+ }
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+ }
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+ </script>
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+
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+ <script type="module">
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+
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+ import * as THREE from 'three';
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+ import { ARButton } from 'three/addons/webxr/ARButton.js';
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+
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+ let camera, scene, renderer;
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+ let controller;
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+
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+ init();
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+ animate();
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+
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+ const planesAdded = new Set();
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+
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+ function init() {
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+
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+ const container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ scene = new THREE.Scene();
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+
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+ camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 20 );
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+
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+ const light = new THREE.HemisphereLight( 0xffffff, 0xbbbbff, 1 );
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+ light.position.set( 0.5, 1, 0.25 );
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+ scene.add( light );
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+
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+ //
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+
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+ renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.xr.enabled = true;
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+ container.appendChild( renderer.domElement );
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+
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+ //
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+
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+ document.body.appendChild( ARButton.createButton( renderer, {
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+ requiredFeatures: ['plane-detection']
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+ } ) );
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+
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+ //
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ renderer.xr.addEventListener( 'sessionstart', function () {
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+
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+ camera.position.set( 0, 0, 0 );
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+
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+ } );
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+
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+ renderer.xr.addEventListener( 'planeadded', function (e) {
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+
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+ console.log( "plane added", e.data )
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+
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+ } );
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+
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+ renderer.xr.addEventListener( 'planeremoved', function (e) {
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+
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+ console.log( "plane removed", e.data )
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+
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+ } );
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+
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+ renderer.xr.addEventListener( 'planechanged', function (e) {
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+
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+ console.log( "plane changed", e.data)
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+
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+ } );
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+
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+ renderer.xr.addEventListener( 'planesdetected', function (e) {
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+
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+ const detectedPlanes = e.data;
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+ const referenceSpace = renderer.xr.getReferenceSpace();
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+
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+ console.log( `Detected ${detectedPlanes.size} planes` );
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+
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+ detectedPlanes.forEach( plane => {
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+
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+ if ( planesAdded.has( plane ) ) return;
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+
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+ planesAdded.add( plane );
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+ const frame = renderer.xr.getFrame();
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+ const planePose = frame.getPose( plane.planeSpace, referenceSpace );
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+ const planeGeometry = new THREE.BufferGeometry();
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+ const polygon = plane.polygon;
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+
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+ let minX = Number.MAX_SAFE_INTEGER;
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+ let maxX = Number.MIN_SAFE_INTEGER;
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+ let minZ = Number.MAX_SAFE_INTEGER;
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+ let maxZ = Number.MIN_SAFE_INTEGER;
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+
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+ polygon.forEach( point => {
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+
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+ minX = Math.min( minX, point.x );
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+ maxX = Math.max( maxX, point.x );
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+ minZ = Math.min( minZ, point.z );
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+ maxZ = Math.max( maxZ, point.z );
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+
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+ } );
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+
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+ const width = maxX - minX;
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+ const height = maxZ - minZ;
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+
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+ const boxMesh = new THREE.Mesh(
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+ new THREE.BoxGeometry( width, 0.01, height ),
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+ new THREE.MeshBasicMaterial( { color: 0xffffff * Math.random() } )
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+ );
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+ boxMesh.matrixAutoUpdate = false;
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+ boxMesh.matrix.fromArray( planePose.transform.matrix );
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+ scene.add( boxMesh );
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+
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+ } );
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+ } );
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+ }
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+
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+ function onWindowResize() {
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ }
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+
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+ //
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+
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+ function animate() {
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+
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+ renderer.setAnimationLoop( render );
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+
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+ }
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+
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+ function render() {
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ </script>
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+ </body>
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+</html>
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RICHΛRD ΛNΛYΛ
