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330 lines
9.1 KiB
330 lines
9.1 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - modifier - subdivision</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 - modifier - <a href="https://github.com/stevinz/three-subdivide" target="_blank" rel="noopener">subdivision</a><br/>
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See external <a href="https://github.com/stevinz/three-subdivide" target="_blank" rel="noopener">three-subdivide</a> for more information on subdivision surfaces.
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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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"three-subdivide": "https://unpkg.com/three-subdivide@1.1.2/build/index.module.js"
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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 { LoopSubdivision } from 'three-subdivide';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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let renderer, scene, camera;
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let texture;
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let meshNormal, meshSmooth;
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let wireNormal, wireSmooth;
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let wireMaterial;
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const params = {
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geometry: 'Box',
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iterations: 3,
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split: true,
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uvSmooth: false,
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preserveEdges: false,
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flatOnly: false,
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maxTriangles: 25000,
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flatShading: false,
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textured: true,
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wireframe: false
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};
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init();
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function init() {
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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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scene = new THREE.Scene();
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camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight );
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camera.position.set( 0, 0.7, 2.1 );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render ); // use if there is no animation loop
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controls.rotateSpeed = 0.5;
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controls.minZoom = 1;
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controls.target.set( 0, 0, 0 );
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controls.update();
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scene.add( new THREE.HemisphereLight( 0xffffff, 0x737373, 1 ) );
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const frontLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
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const backLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
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frontLight.position.set( 0, 1, 1 );
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backLight.position.set( 0, 1, - 1 );
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scene.add( frontLight, backLight );
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texture = new THREE.TextureLoader().load( './textures/uv_grid_opengl.jpg', () => {
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texture.wrapS = THREE.RepeatWrapping;
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texture.wrapT = THREE.RepeatWrapping;
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render();
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} );
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meshNormal = new THREE.Mesh( new THREE.BufferGeometry(), new THREE.MeshBasicMaterial() );
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meshSmooth = new THREE.Mesh( new THREE.BufferGeometry(), new THREE.MeshBasicMaterial() );
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meshNormal.position.set( - 0.7, 0, 0 );
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meshSmooth.position.set( 0.7, 0, 0 );
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scene.add( meshNormal, meshSmooth );
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wireMaterial = new THREE.MeshBasicMaterial( { color: 0xffffff, depthTest: true, wireframe: true } );
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wireNormal = new THREE.Mesh( new THREE.BufferGeometry(), wireMaterial );
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wireSmooth = new THREE.Mesh( new THREE.BufferGeometry(), wireMaterial );
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wireNormal.visible = false;
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wireSmooth.visible = false;
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wireNormal.position.copy( meshNormal.position );
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wireSmooth.position.copy( meshSmooth.position );
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scene.add( wireNormal, wireSmooth );
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updateMeshes();
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window.addEventListener( 'resize', onWindowResize );
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const geomTypes = [ 'Box', 'Capsule', 'Circle', 'Cone', 'Cylinder', 'Dodecahedron', 'Icosahedron', 'Lathe', 'Octahedron', 'Plane', 'Ring', 'Sphere', 'Tetrahedron', 'Torus', 'TorusKnot' ];
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const gui = new GUI();
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const folder1 = gui.addFolder( 'Subdivide Params' );
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const geomController = folder1.add( params, 'geometry', geomTypes ).onFinishChange( () => {
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const geom = params.geometry.toLowerCase();
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params.split = geom === 'box' || geom === 'ring' || geom === 'plane';
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params.uvSmooth = geom === 'circle' || geom === 'plane' || geom === 'ring';
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refreshDisplay();
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} );
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folder1.add( params, 'iterations' ).min( 0 ).max( 5 ).step( 1 ).onFinishChange( updateMeshes );
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const splitController = folder1.add( params, 'split' ).onFinishChange( updateMeshes );
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const uvSmoothController = folder1.add( params, 'uvSmooth' ).onFinishChange( updateMeshes );
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const preserveController = folder1.add( params, 'preserveEdges' ).onFinishChange( updateMeshes );
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folder1.add( params, 'flatOnly' ).onFinishChange( updateMeshes );
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folder1.add( params, 'maxTriangles' ).onFinishChange( updateMeshes );
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const folder2 = gui.addFolder( 'Material' );
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folder2.add( params, 'flatShading' ).onFinishChange( updateMaterial );
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folder2.add( params, 'textured' ).onFinishChange( updateMaterial );
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folder2.add( params, 'wireframe' ).onFinishChange( updateWireframe );
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function refreshDisplay() {
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geomController.updateDisplay();
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splitController.updateDisplay();
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uvSmoothController.updateDisplay();
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preserveController.updateDisplay();
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updateMeshes();
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}
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}
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function getGeometry() {
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switch ( params.geometry.toLowerCase() ) {
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case 'box':
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return new THREE.BoxGeometry();
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case 'capsule':
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return new THREE.CapsuleGeometry( 0.5, 0.5, 3, 5 );
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case 'circle':
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return new THREE.CircleGeometry( 0.6, 10 );
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case 'cone':
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return new THREE.ConeGeometry( 0.6, 1.5, 5, 3 );
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case 'cylinder':
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return new THREE.CylinderGeometry( 0.5, 0.5, 1, 5, 4 );
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case 'dodecahedron':
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return new THREE.DodecahedronGeometry( 0.6 );
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case 'icosahedron':
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return new THREE.IcosahedronGeometry( 0.6 );
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case 'lathe':
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// Sine Wave
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const points = [];
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for ( let i = 0; i < 65; i += 5 ) {
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const x = ( Math.sin( i * 0.2 ) * Math.sin( i * 0.1 ) * 15 + 50 ) * 1.2;
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const y = ( i - 5 ) * 3;
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points.push( new THREE.Vector2( x * 0.0075, y * 0.005 ) );
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}
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const latheGeometry = new THREE.LatheGeometry( points, 4 );
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latheGeometry.center();
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return latheGeometry;
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case 'octahedron':
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return new THREE.OctahedronGeometry( 0.7 );
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case 'plane':
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return new THREE.PlaneGeometry();
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case 'ring':
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return new THREE.RingGeometry( 0.3, 0.6, 10 );
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case 'sphere':
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return new THREE.SphereGeometry( 0.6, 8, 4 );
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case 'tetrahedron':
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return new THREE.TetrahedronGeometry( 0.8 );
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case 'torus':
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return new THREE.TorusGeometry( 0.48, 0.24, 4, 6 );
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case 'torusknot':
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return new THREE.TorusKnotGeometry( 0.38, 0.18, 20, 4 );
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}
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}
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function updateMeshes() {
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const normalGeometry = getGeometry();
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const smoothGeometry = LoopSubdivision.modify( normalGeometry, params.iterations, params );
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meshNormal.geometry.dispose();
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meshSmooth.geometry.dispose();
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meshNormal.geometry = normalGeometry;
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meshSmooth.geometry = smoothGeometry;
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wireNormal.geometry.dispose();
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wireSmooth.geometry.dispose();
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wireNormal.geometry = normalGeometry.clone();
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wireSmooth.geometry = smoothGeometry.clone();
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updateMaterial();
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}
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function disposeMaterial( material ) {
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const materials = Array.isArray( material ) ? material : [ material ];
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for ( let i = 0; i < materials.length; i ++ ) {
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if ( materials[ i ].dispose ) materials[ i ].dispose();
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}
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}
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function updateMaterial() {
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disposeMaterial( meshNormal.material );
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disposeMaterial( meshSmooth.material );
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const materialParams = {
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color: ( params.textured ) ? 0xffffff : 0x808080,
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flatShading: params.flatShading,
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map: ( params.textured ) ? texture : null,
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polygonOffset: true,
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polygonOffsetFactor: 1, // positive value pushes polygon further away
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polygonOffsetUnits: 1
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};
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switch ( params.geometry.toLowerCase() ) {
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case 'circle':
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case 'lathe':
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case 'plane':
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case 'ring':
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materialParams.side = THREE.DoubleSide;
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break;
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case 'box':
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case 'capsule':
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case 'cone':
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case 'cylinder':
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case 'dodecahedron':
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case 'icosahedron':
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case 'octahedron':
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case 'sphere':
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case 'tetrahedron':
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case 'torus':
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case 'torusknot':
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materialParams.side = THREE.FrontSide;
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break;
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}
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meshNormal.material = meshSmooth.material = new THREE.MeshStandardMaterial( materialParams );
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render();
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}
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function updateWireframe() {
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wireNormal.visible = wireSmooth.visible = params.wireframe;
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render();
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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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</script>
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</body>
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</html>
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