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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 webgl - performance</title>
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- <meta charset="utf-8">
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- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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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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- <script type="module">
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-
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- import * as THREE from '../build/three.module.js';
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-
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- import Stats from './jsm/libs/stats.module.js';
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-
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- var container, stats;
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-
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- var camera, scene, renderer;
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-
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- var mouseX = 0, mouseY = 0;
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-
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- var SCREEN_WIDTH = window.innerWidth,
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- SCREEN_HEIGHT = window.innerHeight;
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-
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- var windowHalfX = SCREEN_WIDTH / 2;
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- var windowHalfY = SCREEN_HEIGHT / 2;
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-
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- init();
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- animate();
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-
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-
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- function init() {
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-
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- container = document.createElement( 'div' );
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- document.body.appendChild( container );
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-
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- camera = new THREE.PerspectiveCamera( 50, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 20000 );
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- camera.position.z = 3200;
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-
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- scene = new THREE.Scene();
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- scene.background = new THREE.Color( 0x050505 );
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-
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- scene.add( new THREE.AmbientLight( 0x050505 ) );
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-
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- var light = new THREE.PointLight( 0x0011ff, 1, 5500 );
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- light.position.set( 4000, 0, 0 );
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- scene.add( light );
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-
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- var light = new THREE.PointLight( 0xff1100, 1, 5500 );
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- light.position.set( - 4000, 0, 0 );
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- scene.add( light );
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-
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- var light = new THREE.PointLight( 0xffaa00, 2, 3000 );
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- light.position.set( 0, 0, 0 );
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- scene.add( light );
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-
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- var path = "textures/cube/SwedishRoyalCastle/";
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- var format = '.jpg';
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- var urls = [
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- path + 'px' + format, path + 'nx' + format,
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- path + 'py' + format, path + 'ny' + format,
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- path + 'pz' + format, path + 'nz' + format
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- ];
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-
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- var reflectionCube = new THREE.CubeTextureLoader().load( urls );
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- reflectionCube.encoding = THREE.sRGBEncoding;
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-
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- var material = new THREE.MeshPhongMaterial( { specular: 0x101010, shininess: 100, envMap: reflectionCube, combine: THREE.MixOperation, reflectivity: 0.1, side: THREE.DoubleSide } );
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-
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- var geometry = new THREE.SphereBufferGeometry( 1, 32, 16, 0, Math.PI );
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-
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- for ( var i = 0; i < 5000; i ++ ) {
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-
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- var mesh = new THREE.Mesh( geometry, material );
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-
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- mesh.position.x = Math.random() * 10000 - 5000;
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- mesh.position.y = Math.random() * 10000 - 5000;
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- mesh.position.z = Math.random() * 10000 - 5000;
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-
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- mesh.rotation.x = Math.random() * 2 * Math.PI;
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- mesh.rotation.y = Math.random() * 2 * Math.PI;
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- mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50 + 100;
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-
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- mesh.matrixAutoUpdate = false;
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- mesh.updateMatrix();
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-
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- scene.add( mesh );
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-
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- }
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-
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- renderer = new THREE.WebGLRenderer( { antialias: true } );
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- renderer.setPixelRatio( window.devicePixelRatio );
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- renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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- renderer.outputEncoding = THREE.sRGBEncoding;
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-
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- container.appendChild( renderer.domElement );
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-
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- stats = new Stats();
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- container.appendChild( stats.dom );
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-
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- document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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- window.addEventListener( 'resize', onWindowResize, false );
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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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- SCREEN_WIDTH = window.innerWidth;
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- SCREEN_HEIGHT = window.innerHeight;
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-
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- renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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-
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- camera.aspect = SCREEN_WIDTH / SCREEN_HEIGHT;
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- camera.updateProjectionMatrix();
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-
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- windowHalfX = SCREEN_WIDTH / 2;
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- windowHalfY = SCREEN_HEIGHT / 2;
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-
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- }
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-
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- function onDocumentMouseMove( event ) {
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-
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- mouseX = ( event.clientX - windowHalfX ) * 10;
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- mouseY = ( event.clientY - windowHalfY ) * 10;
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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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- requestAnimationFrame( animate );
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-
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- render();
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- stats.update();
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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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- camera.position.x += ( mouseX - camera.position.x ) * .05;
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- camera.position.y += ( - mouseY - camera.position.y ) * .05;
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-
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- camera.lookAt( scene.position );
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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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-
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- </body>
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-</html>
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Mr.doob
