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


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - PLY</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> -
			PLY loader test by <a href="https://github.com/menway" target="_blank" rel="noopener">Wei Meng</a>.<br/>
			Image from <a href="http://people.sc.fsu.edu/~jburkardt/data/ply/ply.html">John Burkardt</a>
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from 'three/addons/libs/stats.module.js';

			import { PLYLoader } from 'three/addons/loaders/PLYLoader.js';

			let container, stats;

			let camera, cameraTarget, scene, renderer;

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 15 );
				camera.position.set( 3, 0.15, 3 );

				cameraTarget = new THREE.Vector3( 0, - 0.1, 0 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x72645b );
				scene.fog = new THREE.Fog( 0x72645b, 2, 15 );


				// Ground

				const plane = new THREE.Mesh(
					new THREE.PlaneGeometry( 40, 40 ),
					new THREE.MeshPhongMaterial( { color: 0xcbcbcb, specular: 0x474747 } )
				);
				plane.rotation.x = - Math.PI / 2;
				plane.position.y = - 0.5;
				scene.add( plane );

				plane.receiveShadow = true;


				// PLY file

				const loader = new PLYLoader();
				loader.load( './models/ply/ascii/dolphins.ply', function ( geometry ) {

					geometry.computeVertexNormals();

					const material = new THREE.MeshStandardMaterial( { color: 0x009cff, flatShading: true } );
					const mesh = new THREE.Mesh( geometry, material );

					mesh.position.y = - 0.2;
					mesh.position.z = 0.3;
					mesh.rotation.x = - Math.PI / 2;
					mesh.scale.multiplyScalar( 0.001 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );

				loader.load( './models/ply/binary/Lucy100k.ply', function ( geometry ) {

					geometry.computeVertexNormals();

					const material = new THREE.MeshStandardMaterial( { color: 0x009cff, flatShading: true } );
					const mesh = new THREE.Mesh( geometry, material );

					mesh.position.x = - 0.2;
					mesh.position.y = - 0.02;
					mesh.position.z = - 0.2;
					mesh.scale.multiplyScalar( 0.0006 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );

				// Lights

				scene.add( new THREE.HemisphereLight( 0x8d7c7c, 0x494966, 3 ) );

				addShadowedLight( 1, 1, 1, 0xffffff, 3.5 );
				addShadowedLight( 0.5, 1, - 1, 0xffd500, 3 );

				// renderer

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );

				renderer.shadowMap.enabled = true;

				container.appendChild( renderer.domElement );

				// stats

				stats = new Stats();
				container.appendChild( stats.dom );

				// resize

				window.addEventListener( 'resize', onWindowResize );

			}

			function addShadowedLight( x, y, z, color, intensity ) {

				const directionalLight = new THREE.DirectionalLight( color, intensity );
				directionalLight.position.set( x, y, z );
				scene.add( directionalLight );

				directionalLight.castShadow = true;

				const d = 1;
				directionalLight.shadow.camera.left = - d;
				directionalLight.shadow.camera.right = d;
				directionalLight.shadow.camera.top = d;
				directionalLight.shadow.camera.bottom = - d;

				directionalLight.shadow.camera.near = 1;
				directionalLight.shadow.camera.far = 4;

				directionalLight.shadow.mapSize.width = 1024;
				directionalLight.shadow.mapSize.height = 1024;

				directionalLight.shadow.bias = - 0.001;

			}

			function onWindowResize() {

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

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				const timer = Date.now() * 0.0005;

				camera.position.x = Math.sin( timer ) * 2.5;
				camera.position.z = Math.cos( timer ) * 2.5;

				camera.lookAt( cameraTarget );

				renderer.render( scene, camera );

			}

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