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webgl_materials_matcap.html
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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">
<style>
body {
font-family: Monospace;
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
a {
color: #ffa;
font-weight: bold;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 0; /* to not conflict with dat.gui */
display:block;
}
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl materials matcap<br />
Drag-and-drop alternate MatCap image files<br/>
</div>
<script src="../build/three.js"></script>
<script src="js/controls/OrbitControls.js"></script>
<script src="js/loaders/GLTFLoader.js"></script>
<script src="js/libs/dat.gui.min.js"></script>
<script src="js/WebGL.js"></script>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var mesh, renderer, scene, camera;
var image;
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.gammaOutput = true;
// scene
scene = new THREE.Scene();
// camera
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 100 );
camera.position.set( 0, 0, 12 );
// controls
var controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render );
controls.enableZoom = false;
// manager
var manager = new THREE.LoadingManager( render );
// matcap
var loader = new THREE.TextureLoader( manager );
var matcap = loader.load( 'textures/matcaps/matcap-porcelain-white.jpg', function () {
matcap.encoding = THREE.sRGBEncoding;
} );
// model
new THREE.GLTFLoader( manager ).load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
mesh = gltf.scene.children[ 0 ];
mesh.material = new THREE.MeshMatcapMaterial( {
color: API.color,
matcap: matcap
} );
scene.add( mesh );
} );
// gui
var gui = new dat.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();
// corner div
var div = document.createElement( 'div' );
div.style.position = 'absolute';
div.style.top = '10px';
div.style.left = '10px';
document.body.appendChild( div );
image = document.createElement( 'img' );
image.style.width = '128px';
image.style.height = '128px';
image.style.display = 'block';
image.style.margin = '0 0 10px 0';
image.src = 'textures/matcaps/matcap-porcelain-white.jpg';
div.appendChild( image );
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 imgCallback( event ) {
if ( mesh.material.matcap ) {
mesh.material.matcap.dispose();
}
mesh.material.matcap = new THREE.Texture( event.target );
mesh.material.matcap.needsUpdate = true;
image.src = mesh.material.matcap.image.src; // corner div
render();
}
function initDragAndDrop() {
document.addEventListener( 'dragover', function ( event ) {
event.preventDefault();
event.dataTransfer.dropEffect = 'copy';
}, false );
document.addEventListener( 'drop', function ( event ) {
event.preventDefault();
var reader = new FileReader();
reader.addEventListener( 'load', function ( event ) {
var img = new Image();
img.onload = imgCallback;
img.src = event.currentTarget.result;
}, false );
reader.readAsDataURL( event.dataTransfer.files[ 0 ] );
}, false );
}
</script>
</body>
</html>