javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - IFCLoader</title>
		<meta charset="utf-8" />
		<meta
			name="viewport"
			content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"
		/>
		<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>
			-
			<a href="https://www.buildingsmart.org/standards/bsi-standards/industry-foundation-classes/" target="_blank" rel="noopener">IFCLoader</a>
		</div>

		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async src="https://unpkg.com/[email protected]/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 { IFCLoader } from 'three/addons/loaders/IFCLoader.js';

			let scene, camera, renderer;

			init();

			function init() {

				//Scene
				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x8cc7de );

				//Camera
				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 1000 );
				camera.position.z = - 70;
				camera.position.y = 25;
				camera.position.x = 90;

				//Initial cube
				const geometry = new THREE.BoxGeometry();
				const material = new THREE.MeshPhongMaterial( { color: 0xffffff } );
				const cube = new THREE.Mesh( geometry, material );
				scene.add( cube );

				//Lights
				const directionalLight1 = new THREE.DirectionalLight( 0xffeeff, 0.8 );
				directionalLight1.position.set( 1, 1, 1 );
				scene.add( directionalLight1 );

				const directionalLight2 = new THREE.DirectionalLight( 0xffffff, 0.8 );
				directionalLight2.position.set( - 1, 0.5, - 1 );
				scene.add( directionalLight2 );

				const ambientLight = new THREE.AmbientLight( 0xffffee, 0.25 );
				scene.add( ambientLight );

				//Setup IFC Loader
				const ifcLoader = new IFCLoader();
				ifcLoader.ifcManager.setWasmPath( 'jsm/loaders/ifc/' );
				ifcLoader.load( 'models/ifc/rac_advanced_sample_project.ifc', function ( model ) {

					scene.add( model.mesh );
					render();

				} );

				const highlightMaterial = new THREE.MeshPhongMaterial( { color: 0xff00ff, depthTest: false, transparent: true, opacity: 0.3 } );

				function selectObject( event ) {

					if ( event.button != 0 ) return;

					const mouse = new THREE.Vector2();
					mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
					mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;

					const raycaster = new THREE.Raycaster();
					raycaster.setFromCamera( mouse, camera );

					const intersected = raycaster.intersectObjects( scene.children, false );
					if ( intersected.length ) {

						const found = intersected[ 0 ];
						const faceIndex = found.faceIndex;
						const geometry = found.object.geometry;
						const id = ifcLoader.ifcManager.getExpressId( geometry, faceIndex );

						const modelID = found.object.modelID;
						ifcLoader.ifcManager.createSubset( { modelID, ids: [ id ], scene, removePrevious: true, material: highlightMaterial } );
						const props = ifcLoader.ifcManager.getItemProperties( modelID, id, true );
						console.log( props );
						renderer.render( scene, camera );

		}

	}

				window.onpointerdown = selectObject;

				//Renderer
				renderer = new THREE.WebGLRenderer( { antialias: true	} );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setPixelRatio( window.devicePixelRatio );
				document.body.appendChild( renderer.domElement );

				//Controls
				const controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );

				window.addEventListener( 'resize', onWindowResize );

				render();

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();
				renderer.setSize( window.innerWidth, window.innerHeight );

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>