javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - modifier - subdivision</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 - modifier - <a href="https://github.com/stevinz/three-subdivide" target="_blank" rel="noopener">subdivision</a><br/>
			See external <a href="https://github.com/stevinz/three-subdivide" target="_blank" rel="noopener">three-subdivide</a> for more information on subdivision surfaces.
		</div>

		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three-subdivide": "https://unpkg.com/[email protected]/build/index.module.js"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import { LoopSubdivision } from 'three-subdivide';
			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { GUI } from './jsm/libs/lil-gui.module.min.js';

			let renderer, scene, camera;
			let texture;
			let meshMaterial, meshNormal, meshSmooth;
			let wireMaterial, wireNormal, wireSmooth;

			const params = {
				geometry: 'Box',
				iterations: 3,
				split: true,
				uvSmooth: false,
				flatOnly: false,
				maxTriangles: 25000,
				wireframe: false
			};

			init();

			function init() {

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				scene = new THREE.Scene();

				camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight );
				camera.position.set( 0, 0.7, 2.1 );

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render ); // use if there is no animation loop
				controls.rotateSpeed = 0.5;
				controls.minZoom = 1;
				controls.target.set( 0, 0, 0 );
				controls.update();

				texture = new THREE.TextureLoader().load( './textures/uv_grid_opengl.jpg', () => {

					texture.wrapS = THREE.RepeatWrapping;
					texture.wrapT = THREE.RepeatWrapping;

					render();

				} );

				meshMaterial = new THREE.MeshBasicMaterial( {
					map: texture,
					polygonOffset: true,
					polygonOffsetFactor: 1, // positive value pushes polygon further away
					polygonOffsetUnits: 1,
					side: THREE.DoubleSide
				} );
				meshNormal = new THREE.Mesh( new THREE.BufferGeometry(), meshMaterial );
				meshSmooth = new THREE.Mesh( new THREE.BufferGeometry(), meshMaterial );
				meshNormal.position.set( - 0.7, 0, 0 );
				meshSmooth.position.set( 0.7, 0, 0 );
				scene.add( meshNormal, meshSmooth );

				wireMaterial = new THREE.MeshBasicMaterial( { color: 0xffffff, depthTest: true, wireframe: true } );
				wireNormal = new THREE.Mesh( new THREE.BufferGeometry(), wireMaterial );
				wireSmooth = new THREE.Mesh( new THREE.BufferGeometry(), wireMaterial );
				wireNormal.visible = false;
				wireSmooth.visible = false;
				wireNormal.position.copy( meshNormal.position );
				wireSmooth.position.copy( meshSmooth.position );
				scene.add( wireNormal, wireSmooth );

				updateMeshes();

				window.addEventListener( 'resize', onWindowResize );

				const geomTypes = [ 'Box', 'Capsule', 'Circle', 'Cone', 'Cylinder', 'Dodecahedron', 'Icosahedron', 'Lathe', 'Octahedron', 'Plane', 'Ring', 'Sphere', 'Tetrahedron', 'Torus', 'TorusKnot' ];

				const gui = new GUI();

				const folder1 = gui.addFolder( 'Subdivide Params' );
				const geomController = folder1.add( params, 'geometry', geomTypes ).onFinishChange( () => {

					const geom = params.geometry.toLowerCase();

					params.split = geom === 'box' || geom === 'ring';
					params.uvSmooth = geom === 'circle' || geom === 'plane' || geom === 'ring';

					refreshDisplay();

				} );

				folder1.add( params, 'iterations' ).min( 0 ).max( 5 ).step( 1 ).onFinishChange( updateMeshes );
				const splitController = folder1.add( params, 'split' ).onFinishChange( updateMeshes );
				const smoothController = folder1.add( params, 'uvSmooth' ).onFinishChange( updateMeshes );
				folder1.add( params, 'flatOnly' ).onFinishChange ( updateMeshes );
				folder1.add( params, 'maxTriangles' ).onFinishChange( updateMeshes );

				const folder2 = gui.addFolder( 'View' );
				folder2.add( params, 'wireframe' ).onFinishChange( updateMeshes );

				function refreshDisplay() {

					geomController.updateDisplay();
					splitController.updateDisplay();
					smoothController.updateDisplay();

					updateMeshes();

				}

			}

			function getGeometry() {

				switch ( params.geometry.toLowerCase() ) {

					case 'box':
						return new THREE.BoxGeometry();

					case 'capsule':
						return new THREE.CapsuleGeometry( 0.5, 0.5, 3, 5 );

					case 'circle':
						return new THREE.CircleGeometry( 0.6, 10 );

					case 'cone':
						return new THREE.ConeGeometry( 0.6, 1.5, 5, 3 );

					case 'cylinder':
						return new THREE.CylinderGeometry( 0.5, 0.5, 1, 5, 5 );

					case 'dodecahedron':
						return new THREE.DodecahedronGeometry( 0.6 );

					case 'icosahedron':
						return new THREE.IcosahedronGeometry( 0.6 );

					case 'lathe':

						// Sine Wave

						const points = [];

						for ( let i = 0; i < 65; i += 5 ) {

							let x = ( Math.sin( i * 0.2 ) * Math.sin( i * 0.1 ) * 15 + 50 ) * 1.2;
							let y = ( i - 5 ) * 3;
							points.push( new THREE.Vector2( x * 0.0075, y * 0.005 ) );

						}

						const latheGeometry = new THREE.LatheGeometry( points, 4 );
						latheGeometry.center();

						return latheGeometry;

					case 'octahedron':
						return new THREE.OctahedronGeometry( 0.7 );

					case 'plane':
						return new THREE.PlaneGeometry();

					case 'ring':
						return new THREE.RingGeometry( 0.3, 0.6, 10 );

					case 'sphere':
						return new THREE.SphereGeometry( 0.6, 8, 4 );

					case 'tetrahedron':
						return new THREE.TetrahedronGeometry( 0.8 );

					case 'torus':
						return new THREE.TorusGeometry( 0.48, 0.24, 4, 6 );

					case 'torusknot':
						return new THREE.TorusKnotGeometry( 0.38, 0.18, 20, 4 );

				}

			}

			function updateMeshes() {

				const normalGeometry = getGeometry();
				const smoothGeometry = LoopSubdivision.modify(
					normalGeometry,
					params.iterations,
					params.split,
					params.uvSmooth,
					params.flatOnly,
					params.maxTriangles
				);

				meshNormal.geometry.dispose();
				meshSmooth.geometry.dispose();
				meshNormal.geometry = normalGeometry;
				meshSmooth.geometry = smoothGeometry;

				wireNormal.geometry.dispose();
				wireSmooth.geometry.dispose();
				wireNormal.geometry = normalGeometry.clone();
				wireSmooth.geometry = smoothGeometry.clone();

				wireNormal.visible = wireSmooth.visible = params.wireframe;

				render();

			}

			function onWindowResize() {

				renderer.setSize( window.innerWidth, window.innerHeight );

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>