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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - performance</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>
- <script type="module">
- import * as THREE from '../build/three.module.js';
- import Stats from './jsm/libs/stats.module.js';
- var container, stats;
- var camera, scene, renderer;
- var mouseX = 0, mouseY = 0;
- var SCREEN_WIDTH = window.innerWidth,
- SCREEN_HEIGHT = window.innerHeight;
- var windowHalfX = SCREEN_WIDTH / 2;
- var windowHalfY = SCREEN_HEIGHT / 2;
- init();
- animate();
- function init() {
- container = document.createElement( 'div' );
- document.body.appendChild( container );
- camera = new THREE.PerspectiveCamera( 50, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 20000 );
- camera.position.z = 3200;
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0x050505 );
- scene.add( new THREE.AmbientLight( 0x050505 ) );
- var light = new THREE.PointLight( 0x0011ff, 1, 5500 );
- light.position.set( 4000, 0, 0 );
- scene.add( light );
- var light = new THREE.PointLight( 0xff1100, 1, 5500 );
- light.position.set( - 4000, 0, 0 );
- scene.add( light );
- var light = new THREE.PointLight( 0xffaa00, 2, 3000 );
- light.position.set( 0, 0, 0 );
- scene.add( light );
- var path = "textures/cube/SwedishRoyalCastle/";
- var format = '.jpg';
- var urls = [
- path + 'px' + format, path + 'nx' + format,
- path + 'py' + format, path + 'ny' + format,
- path + 'pz' + format, path + 'nz' + format
- ];
- var reflectionCube = new THREE.CubeTextureLoader().load( urls );
- reflectionCube.format = THREE.RGBFormat;
- reflectionCube.encoding = THREE.sRGBEncoding;
- var material = new THREE.MeshPhongMaterial( { specular: 0x101010, shininess: 100, envMap: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.1, side: THREE.DoubleSide } );
- var geometry = new THREE.SphereBufferGeometry( 1, 32, 16, 0, Math.PI );
- for ( var i = 0; i < 5000; i ++ ) {
- var mesh = new THREE.Mesh( geometry, material );
- mesh.position.x = Math.random() * 10000 - 5000;
- mesh.position.y = Math.random() * 10000 - 5000;
- mesh.position.z = Math.random() * 10000 - 5000;
- mesh.rotation.x = Math.random() * 2 * Math.PI;
- mesh.rotation.y = Math.random() * 2 * Math.PI;
- mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50 + 100;
- mesh.matrixAutoUpdate = false;
- mesh.updateMatrix();
- scene.add( mesh );
- }
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
- renderer.outputEncoding = THREE.sRGBEncoding;
- container.appendChild( renderer.domElement );
- stats = new Stats();
- container.appendChild( stats.dom );
- document.addEventListener( 'mousemove', onDocumentMouseMove, false );
- window.addEventListener( 'resize', onWindowResize, false );
- }
- //
- function onWindowResize() {
- SCREEN_WIDTH = window.innerWidth;
- SCREEN_HEIGHT = window.innerHeight;
- renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
- camera.aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
- camera.updateProjectionMatrix();
- windowHalfX = SCREEN_WIDTH / 2;
- windowHalfY = SCREEN_HEIGHT / 2;
- }
- function onDocumentMouseMove( event ) {
- mouseX = ( event.clientX - windowHalfX ) * 10;
- mouseY = ( event.clientY - windowHalfY ) * 10;
- }
- //
- function animate() {
- requestAnimationFrame( animate );
- render();
- stats.update();
- }
- function render() {
- camera.position.x += ( mouseX - camera.position.x ) * .05;
- camera.position.y += ( - mouseY - camera.position.y ) * .05;
- camera.lookAt( scene.position );
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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