javascript
/
three.js
同期ミラー https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - modifier - Subdivisions using Loop Subdivision Scheme</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> - subdivision modifier
		</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 { SubdivisionModifier } from './jsm/modifiers/SubdivisionModifier.js';

			let camera, scene, renderer, smoothMesh;

			const material = new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true } );
			const wireframeMaterial = new THREE.LineBasicMaterial();

			const params = {
				subdivisions: 2
			};

			init();

			function init() {

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 500 );
				camera.position.z = 100;

				scene = new THREE.Scene();

				scene.add( new THREE.AmbientLight( 0xffffff, 0.2 ) );

				const light = new THREE.PointLight( 0xffffff, 0.8 );
				light.position.set( 0, 50, 100 );
				scene.add( light );

				const loader = new THREE.BufferGeometryLoader();
				loader.load( 'models/json/WaltHeadLo_buffergeometry.json', function ( geometry ) {

					const mesh = new THREE.Mesh( geometry, material );
					mesh.position.x = 32;
					scene.add( mesh );

					const wireframe = new THREE.WireframeGeometry( geometry );
					const line = new THREE.LineSegments( wireframe, wireframeMaterial );
					mesh.add( line );

					const gui = new GUI();

					gui.add( params, 'subdivisions', 0, 3 ).step( 1 ).onChange( function ( subdivisions ) {

						subdivide( geometry, subdivisions );
						render();

					} );

					//

					subdivide( geometry, params.subdivisions );

					render();

				} );

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

				//

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );
				controls.minDistance = 50;
				controls.maxDistance = 400;

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function subdivide( geometry, subdivisions ) {

				const modifier = new SubdivisionModifier( subdivisions );

				const smoothGeometry = modifier.modify( geometry );

				if ( smoothMesh !== undefined ) {

					smoothMesh.geometry.dispose();
					smoothMesh.children[ 0 ].geometry.dispose();

					scene.remove( smoothMesh );

				}

				smoothMesh = new THREE.Mesh( smoothGeometry, material );
				smoothMesh.position.x = - 32;

				const wireframe = new THREE.WireframeGeometry( smoothGeometry );
				const line = new THREE.LineSegments( wireframe, wireframeMaterial );
				smoothMesh.add( line );

				scene.add( smoothMesh );

			}

			function onWindowResize() {

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

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

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>