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343 lines
8.0 KiB
343 lines
8.0 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - modifier - Subdivisions using Loop Subdivision Scheme</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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<style>
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body {
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font-family: Monospace;
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background-color: #f0f0f0;
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margin: 0px;
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overflow: hidden;
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}
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</style>
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</head>
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<body>
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<script src="../build/three.js"></script>
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<script src="js/controls/OrbitControls.js"></script>
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<script src="js/modifiers/SubdivisionModifier.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script src="js/WebGL.js"></script>
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<script>
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if ( WEBGL.isWebGLAvailable() === false ) {
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document.body.appendChild( WEBGL.getWebGLErrorMessage() );
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}
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var container, stats;
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var camera, scene, renderer;
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var cube, mesh, material, geometry, smooth, group;
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// Create new object by parameters
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var createSomething = function ( klass, args ) {
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var F = function ( klass, args ) {
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return klass.apply( this, args );
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};
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F.prototype = klass.prototype;
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return new F( klass, args );
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};
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var wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, opacity: 0.15, transparent: true } );
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var material = new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true } );
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var smoothMaterial = new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true, vertexColors: THREE.VertexColors } );
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// Cube
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var materials = [];
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for ( var i = 0; i < 6; i ++ ) {
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materials.push( [ new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: false } ) ] );
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}
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var geometriesParams = [
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{ type: 'BoxGeometry', args: [ 200, 200, 200, 2, 2, 2, materials ] },
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{ type: 'TorusGeometry', args: [ 100, 60, 4, 8, Math.PI * 2 ] },
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{ type: 'TorusKnotGeometry', args: [ 100, 30 ], scale: 0.25, meshScale: 4 },
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{ type: 'SphereGeometry', args: [ 100, 3, 3 ], meshScale: 2 },
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{ type: 'IcosahedronGeometry', args: [ 100, 1 ], meshScale: 2 },
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{ type: 'CylinderGeometry', args: [ 25, 75, 200, 8, 3 ] },
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{ type: 'OctahedronGeometry', args: [ 200, 0 ], meshScale: 2 },
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{ type: 'LatheGeometry', args: [[
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new THREE.Vector2( 0, 0 ),
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new THREE.Vector2( 50, 50 ),
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new THREE.Vector2( 10, 100 ),
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new THREE.Vector2( 50, 150 ),
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new THREE.Vector2( 0, 200 ) ]] },
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{ type: 'TextGeometry', args: [ '&', {
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size: 200,
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height: 50,
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curveSegments: 1
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} ] },
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{ type: 'PlaneGeometry', args: [ 200, 200, 4, 4 ] }
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];
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var loader = new THREE.FontLoader();
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loader.load( 'fonts/helvetiker_regular.typeface.json', function ( font ) {
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geometriesParams[ 8 ].args[ 1 ].font = font;
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} );
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var loader = new THREE.BufferGeometryLoader();
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loader.load( 'models/json/WaltHeadLo_buffergeometry.json', function ( geometry ) {
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geometry = new THREE.Geometry().fromBufferGeometry( geometry );
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geometriesParams.push( { type: 'WaltHead', args: [ ], meshScale: 6 } );
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THREE.WaltHead = function () {
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return geometry.clone();
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};
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updateInfo();
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} );
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var loader2 = new THREE.BufferGeometryLoader();
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loader2.load( 'models/json/suzanne_buffergeometry.json', function ( geometry ) {
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geometry = new THREE.Geometry().fromBufferGeometry( geometry );
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geometriesParams.push( { type: 'Suzanne', args: [ ], scale: 100, meshScale: 2 } );
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THREE.Suzanne = function () {
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return geometry.clone();
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};
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updateInfo();
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} );
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var info;
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var subdivisions = 2;
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var geometryIndex = 0;
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// start scene
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init();
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animate();
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function nextSubdivision( x ) {
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subdivisions = Math.max( 0, subdivisions + x );
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addStuff();
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}
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function nextGeometry() {
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geometryIndex ++;
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if ( geometryIndex > geometriesParams.length - 1 ) {
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geometryIndex = 0;
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}
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addStuff();
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}
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function switchGeometry( i ) {
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geometryIndex = i;
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addStuff();
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}
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function updateInfo() {
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var params = geometriesParams[ geometryIndex ];
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var dropdown = '<select id="dropdown" onchange="switchGeometry(this.value)">';
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for ( var i = 0; i < geometriesParams.length; i ++ ) {
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dropdown += '<option value="' + i + '"';
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dropdown += ( geometryIndex == i ) ? ' selected' : '';
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dropdown += '>' + geometriesParams[ i ].type + '</option>';
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}
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dropdown += '</select>';
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info.innerHTML = 'Drag to spin THREE.' + params.type +
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'<br><br>Subdivisions: ' + subdivisions +
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' <a href="#" onclick="nextSubdivision(1); return false;">more</a>/<a href="#" onclick="nextSubdivision(-1); return false;">less</a>' +
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'<br>Geometry: ' + dropdown + ' <a href="#" onclick="nextGeometry();return false;">next</a>' +
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'<br><br>Vertices count: before ' + geometry.vertices.length + ' after ' + smooth.vertices.length +
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'<br>Face count: before ' + geometry.faces.length + ' after ' + smooth.faces.length;
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}
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function addStuff() {
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if ( cube !== undefined ) {
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geometry.dispose();
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smooth.dispose();
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scene.remove( group );
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scene.remove( cube );
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}
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var modifier = new THREE.SubdivisionModifier( subdivisions );
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var params = geometriesParams[ geometryIndex ];
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geometry = createSomething( THREE[ params.type ], params.args );
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// Scale Geometry
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if ( params.scale ) {
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geometry.scale( params.scale, params.scale, params.scale );
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}
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smooth = modifier.modify( geometry );
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var faceIndices = [ 'a', 'b', 'c' ];
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for ( var i = 0; i < smooth.faces.length; i ++ ) {
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var face = smooth.faces[ i ];
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for ( var j = 0; j < 3; j ++ ) {
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var vertexIndex = face[ faceIndices[ j ] ];
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var vertex = smooth.vertices[ vertexIndex ];
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var hue = ( vertex.y / 200 ) + 0.5;
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var color = new THREE.Color().setHSL( hue, 1, 0.5 );
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face.vertexColors[ j ] = color;
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}
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}
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updateInfo();
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group = new THREE.Group();
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scene.add( group );
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mesh = new THREE.Mesh( new THREE.BufferGeometry().fromGeometry( geometry ), material );
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group.add( mesh );
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var smoothBufferGeometry = new THREE.BufferGeometry().fromGeometry( smooth );
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cube = new THREE.Mesh( smoothBufferGeometry, smoothMaterial );
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var wireframe = new THREE.Mesh( smoothBufferGeometry, wireframeMaterial );
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cube.add( wireframe );
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cube.scale.setScalar( params.meshScale ? params.meshScale : 1 );
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scene.add( cube );
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group.scale.copy( cube.scale );
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}
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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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info = document.createElement( 'div' );
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info.style.position = 'absolute';
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info.style.top = '10px';
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info.style.width = '100%';
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info.style.textAlign = 'center';
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info.innerHTML = 'Drag to spin the geometry ';
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container.appendChild( info );
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camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.z = 500;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0f0 );
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var light = new THREE.PointLight( 0xffffff, 1.5 );
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light.position.set( 1000, 1000, 2000 );
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scene.add( light );
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addStuff();
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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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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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var controls = new THREE.OrbitControls( camera, renderer.domElement );
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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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stats.begin();
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render();
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stats.end();
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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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</script>
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</body>
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</html>
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