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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - lottie loader</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 - lottie<br/></br>
- <input id="scrubber" type="range" value="0" style="width: 300px">
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
- import { RoundedBoxGeometry } from 'three/addons/geometries/RoundedBoxGeometry.js';
- import { LottieLoader } from 'three/addons/loaders/LottieLoader.js';
- let renderer, scene, camera;
- let mesh;
- init();
- function init() {
- camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 10 );
- camera.position.z = 2.5;
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0x111111 );
- const loader = new LottieLoader();
- loader.setQuality( 2 );
- loader.load( 'textures/lottie/24017-lottie-logo-animation.json', function ( texture ) {
- setupControls( texture.animation );
- // texture = new THREE.TextureLoader().load( 'textures/uv_grid_directx.jpg' );
- // texture.colorSpace = THREE.SRGBColorSpace;
- const geometry = new RoundedBoxGeometry( 1, 1, 1, 7, 0.2 );
- const material = new THREE.MeshStandardMaterial( { roughness: 0.1, map: texture } );
- mesh = new THREE.Mesh( geometry, material );
- scene.add( mesh );
- } );
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- document.body.appendChild( renderer.domElement );
- const environment = new RoomEnvironment();
- const pmremGenerator = new THREE.PMREMGenerator( renderer );
- scene.environment = pmremGenerator.fromScene( environment ).texture;
- //
- window.addEventListener( 'resize', onWindowResize );
- }
- function setupControls( animation ) {
- // Lottie animation API
- // https://airbnb.io/lottie/#/web
- // There are a few undocumented properties:
- // console.log( animation );
- const scrubber = document.getElementById( 'scrubber' );
- scrubber.max = animation.totalFrames;
- scrubber.addEventListener( 'pointerdown', function () {
- animation.pause();
- } );
- scrubber.addEventListener( 'pointerup', function () {
- animation.play();
- } );
- scrubber.addEventListener( 'input', function () {
- animation.goToAndStop( parseFloat( scrubber.value ), true );
- } );
- animation.addEventListener( 'enterFrame', function () {
- scrubber.value = animation.currentFrame;
- } );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- //
- function animate() {
- if ( mesh ) {
- mesh.rotation.y -= 0.001;
- }
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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