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230 lines
5.5 KiB
230 lines
5.5 KiB
2 years ago
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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 - materials - anisotropic texture filtering</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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<style>
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body {
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color: #444;
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}
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a {
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color: #08f;
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}
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.lbl {
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color: #fff;
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font-size: 16px;
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font-weight: bold;
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position: absolute;
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bottom: 0px;
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z-index: 100;
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text-shadow: #000 1px 1px 1px;
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background-color: rgba(0,0,0,0.85);
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padding: 1em;
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}
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#lbl_left {
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text-align:left;
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left:0px;
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}
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#lbl_right {
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text-align:left;
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right:0px
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}
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.g { color:#aaa }
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.c { color:#fa0 }
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</style>
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - anisotropic texture filtering example
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</div>
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<div id="lbl_left" class="lbl">
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anisotropy: <span class="c" id="val_left"></span><br/>
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</div>
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<div id="lbl_right" class="lbl">
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anisotropy: <span class="c" id="val_right"></span><br/>
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</div>
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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/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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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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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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const SCREEN_WIDTH = window.innerWidth;
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const SCREEN_HEIGHT = window.innerHeight;
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let container, stats;
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let camera, scene1, scene2, renderer;
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let mouseX = 0, mouseY = 0;
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const windowHalfX = window.innerWidth / 2;
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const windowHalfY = window.innerHeight / 2;
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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//
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camera = new THREE.PerspectiveCamera( 35, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 25000 );
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camera.position.z = 1500;
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scene1 = new THREE.Scene();
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scene1.background = new THREE.Color( 0xf2f7ff );
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scene1.fog = new THREE.Fog( 0xf2f7ff, 1, 25000 );
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scene2 = new THREE.Scene();
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scene2.background = new THREE.Color( 0xf2f7ff );
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scene2.fog = new THREE.Fog( 0xf2f7ff, 1, 25000 );
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scene1.add( new THREE.AmbientLight( 0xeef0ff ) );
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scene2.add( new THREE.AmbientLight( 0xeef0ff ) );
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const light1 = new THREE.DirectionalLight( 0xffffff, 2 );
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light1.position.set( 1, 1, 1 );
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scene1.add( light1 );
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const light2 = new THREE.DirectionalLight( 0xffffff, 2 );
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light2.position.set( 1, 1, 1 );
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scene2.add( light2 );
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// GROUND
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const textureLoader = new THREE.TextureLoader();
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const maxAnisotropy = renderer.capabilities.getMaxAnisotropy();
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const texture1 = textureLoader.load( 'textures/crate.gif' );
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const material1 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: texture1 } );
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texture1.anisotropy = maxAnisotropy;
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texture1.wrapS = texture1.wrapT = THREE.RepeatWrapping;
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texture1.repeat.set( 512, 512 );
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const texture2 = textureLoader.load( 'textures/crate.gif' );
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const material2 = new THREE.MeshPhongMaterial( { color: 0xffffff, map: texture2 } );
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texture2.anisotropy = 1;
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texture2.wrapS = texture2.wrapT = THREE.RepeatWrapping;
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texture2.repeat.set( 512, 512 );
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if ( maxAnisotropy > 0 ) {
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document.getElementById( 'val_left' ).innerHTML = texture1.anisotropy;
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document.getElementById( 'val_right' ).innerHTML = texture2.anisotropy;
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} else {
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document.getElementById( 'val_left' ).innerHTML = 'not supported';
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document.getElementById( 'val_right' ).innerHTML = 'not supported';
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}
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//
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const geometry = new THREE.PlaneGeometry( 100, 100 );
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const mesh1 = new THREE.Mesh( geometry, material1 );
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mesh1.rotation.x = - Math.PI / 2;
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mesh1.scale.set( 1000, 1000, 1000 );
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const mesh2 = new THREE.Mesh( geometry, material2 );
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mesh2.rotation.x = - Math.PI / 2;
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mesh2.scale.set( 1000, 1000, 1000 );
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scene1.add( mesh1 );
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scene2.add( mesh2 );
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// RENDERER
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
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renderer.autoClear = false;
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renderer.domElement.style.position = 'relative';
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container.appendChild( renderer.domElement );
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// STATS1
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stats = new Stats();
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container.appendChild( stats.dom );
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document.addEventListener( 'mousemove', onDocumentMouseMove );
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}
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function onDocumentMouseMove( event ) {
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mouseX = ( event.clientX - windowHalfX );
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mouseY = ( event.clientY - windowHalfY );
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}
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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camera.position.x += ( mouseX - camera.position.x ) * .05;
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camera.position.y = THREE.MathUtils.clamp( camera.position.y + ( - ( mouseY - 200 ) - camera.position.y ) * .05, 50, 1000 );
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camera.lookAt( scene1.position );
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renderer.clear();
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renderer.setScissorTest( true );
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renderer.setScissor( 0, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT );
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renderer.render( scene1, camera );
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renderer.setScissor( SCREEN_WIDTH / 2, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT );
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renderer.render( scene2, camera );
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renderer.setScissorTest( false );
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}
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</script>
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</body>
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</html>
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