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276 lines
5.9 KiB
276 lines
5.9 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 - matcap</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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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl materials matcap<br />
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Drag-and-drop JPG, PNG, WebP, or EXR MatCap image files<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 { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { EXRLoader } from 'three/addons/loaders/EXRLoader.js';
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let mesh, renderer, scene, camera;
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const API = {
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color: 0xffffff, // sRGB
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exposure: 1.0
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};
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init();
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function init() {
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// renderer
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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// tone mapping
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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renderer.toneMappingExposure = API.exposure;
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renderer.outputEncoding = THREE.sRGBEncoding;
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// scene
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scene = new THREE.Scene();
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// camera
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 100 );
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camera.position.set( 0, 0, 13 );
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// controls
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render );
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controls.enableZoom = false;
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controls.enablePan = false;
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// manager
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const manager = new THREE.LoadingManager( render );
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// matcap
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const loaderEXR = new EXRLoader( manager );
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const matcap = loaderEXR.load( 'textures/matcaps/040full.exr' );
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// normalmap
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const loader = new THREE.TextureLoader( manager );
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const normalmap = loader.load( 'models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg' );
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// model
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new GLTFLoader( manager ).load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
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mesh = gltf.scene.children[ 0 ];
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mesh.position.y = - 0.25;
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mesh.material = new THREE.MeshMatcapMaterial( {
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color: new THREE.Color().setHex( API.color ).convertSRGBToLinear(),
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matcap: matcap,
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normalMap: normalmap
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} );
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scene.add( mesh );
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} );
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// gui
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const gui = new GUI();
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gui.addColor( API, 'color' )
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.listen()
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.onChange( function () {
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mesh.material.color.set( API.color ).convertSRGBToLinear();
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render();
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} );
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gui.add( API, 'exposure', 0, 2 )
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.onChange( function () {
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renderer.toneMappingExposure = API.exposure;
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render();
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} );
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gui.domElement.style.webkitUserSelect = 'none';
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// drag 'n drop
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initDragAndDrop();
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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renderer.setSize( window.innerWidth, window.innerHeight );
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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render();
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}
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function render() {
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renderer.render( scene, camera );
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}
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//
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// drag and drop anywhere in document
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//
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function updateMatcap( texture ) {
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if ( mesh.material.matcap ) {
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mesh.material.matcap.dispose();
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}
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mesh.material.matcap = texture;
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texture.needsUpdate = true;
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mesh.material.needsUpdate = true; // because the encoding can change
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render();
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}
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function handleJPG( event ) { // PNG, WebP, too
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function imgCallback( event ) {
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const texture = new THREE.Texture( event.target );
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texture.encoding = THREE.sRGBEncoding;
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updateMatcap( texture );
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}
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const img = new Image();
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img.onload = imgCallback;
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img.src = event.target.result;
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}
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function handleEXR( event ) {
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const contents = event.target.result;
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const loader = new EXRLoader();
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loader.setDataType( THREE.HalfFloatType );
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const texData = loader.parse( contents );
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const texture = new THREE.DataTexture();
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texture.image.width = texData.width;
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texture.image.height = texData.height;
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texture.image.data = texData.data;
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texture.format = texData.format;
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texture.type = texData.type;
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texture.encoding = THREE.LinearEncoding;
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texture.minFilter = THREE.LinearFilter;
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texture.magFilter = THREE.LinearFilter;
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texture.generateMipmaps = false;
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texture.flipY = false;
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updateMatcap( texture );
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}
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function loadFile( file ) {
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const filename = file.name;
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const extension = filename.split( '.' ).pop().toLowerCase();
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if ( extension === 'exr' ) {
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const reader = new FileReader();
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reader.addEventListener( 'load', function ( event ) {
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handleEXR( event );
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} );
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reader.readAsArrayBuffer( file );
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} else { // 'jpg', 'png'
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const reader = new FileReader();
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reader.addEventListener( 'load', function ( event ) {
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handleJPG( event );
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} );
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reader.readAsDataURL( file );
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}
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}
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function initDragAndDrop() {
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document.addEventListener( 'dragover', function ( event ) {
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event.preventDefault();
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event.dataTransfer.dropEffect = 'copy';
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} );
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document.addEventListener( 'drop', function ( event ) {
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event.preventDefault();
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loadFile( event.dataTransfer.files[ 0 ] );
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} );
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}
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</script>
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</body>
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</html>
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