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