examples/webgl_morphtargets_sphere.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - morph targets - sphere</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="container"></div>
		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - WebGL morph target example
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
			import { Timer } from 'three/addons/misc/Timer.js';

			let camera, scene, renderer, timer;

			let mesh;

			let sign = 1;
			const speed = 0.5;

			init();

			function init() {

				const container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.2, 100 );
				camera.position.set( 0, 5, 5 );

				scene = new THREE.Scene();

				timer = new Timer();
				timer.connect( document );

				const light1 = new THREE.PointLight( 0xff2200, 50000 );
				light1.position.set( 100, 100, 100 );
				scene.add( light1 );

				const light2 = new THREE.PointLight( 0x22ff00, 10000 );
				light2.position.set( - 100, - 100, - 100 );
				scene.add( light2 );

				scene.add( new THREE.AmbientLight( 0x111111 ) );

				const loader = new GLTFLoader();
				loader.load( 'models/gltf/AnimatedMorphSphere/glTF/AnimatedMorphSphere.gltf', function ( gltf ) {

					mesh = gltf.scene.getObjectByName( 'AnimatedMorphSphere' );
					mesh.rotation.z = Math.PI / 2;
					scene.add( mesh );

					//

					const pointsMaterial = new THREE.PointsMaterial( {
						size: 10,
						sizeAttenuation: false,
						map: new THREE.TextureLoader().load( 'textures/sprites/disc.png' ),
						alphaTest: 0.5
					} );

					const points = new THREE.Points( mesh.geometry, pointsMaterial );
					points.morphTargetInfluences = mesh.morphTargetInfluences;
					points.morphTargetDictionary = mesh.morphTargetDictionary;
					mesh.add( points );

				} );

				//

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );

				container.appendChild( renderer.domElement );

				//

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 1;
				controls.maxDistance = 20;

				//

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

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

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

			}

			function animate() {

				timer.update();
				render();

			}

			function render() {

				const delta = timer.getDelta();

				if ( mesh !== undefined ) {

					const step = delta * speed;

					mesh.rotation.y += step;

					mesh.morphTargetInfluences[ 1 ] = mesh.morphTargetInfluences[ 1 ] + step * sign;

					if ( mesh.morphTargetInfluences[ 1 ] <= 0 || mesh.morphTargetInfluences[ 1 ] >= 1 ) {

						sign *= - 1;

					}

				}

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>