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- <!DOCTYPE html>
- <html>
- <head>
- <title>three.js css3d - sprites</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">
- <style>
- body {
- background-color: #fff;
- color: #000;
- }
- a {
- color: #48f;
- }
- </style>
- </head>
- <body>
- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> css3d - sprites</div>
- <div id="container"></div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import TWEEN from 'three/addons/libs/tween.module.js';
- import { TrackballControls } from 'three/addons/controls/TrackballControls.js';
- import { CSS3DRenderer, CSS3DSprite } from 'three/addons/renderers/CSS3DRenderer.js';
- let camera, scene, renderer;
- let controls;
- const particlesTotal = 512;
- const positions = [];
- const objects = [];
- let current = 0;
- init();
- animate();
- function init() {
- camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 5000 );
- camera.position.set( 600, 400, 1500 );
- camera.lookAt( 0, 0, 0 );
- scene = new THREE.Scene();
- const image = document.createElement( 'img' );
- image.addEventListener( 'load', function () {
- for ( let i = 0; i < particlesTotal; i ++ ) {
- const object = new CSS3DSprite( image.cloneNode() );
- object.position.x = Math.random() * 4000 - 2000,
- object.position.y = Math.random() * 4000 - 2000,
- object.position.z = Math.random() * 4000 - 2000;
- scene.add( object );
- objects.push( object );
- }
- transition();
- } );
- image.src = 'textures/sprite.png';
- // Plane
- const amountX = 16;
- const amountZ = 32;
- const separationPlane = 150;
- const offsetX = ( ( amountX - 1 ) * separationPlane ) / 2;
- const offsetZ = ( ( amountZ - 1 ) * separationPlane ) / 2;
- for ( let i = 0; i < particlesTotal; i ++ ) {
- const x = ( i % amountX ) * separationPlane;
- const z = Math.floor( i / amountX ) * separationPlane;
- const y = ( Math.sin( x * 0.5 ) + Math.sin( z * 0.5 ) ) * 200;
- positions.push( x - offsetX, y, z - offsetZ );
- }
- // Cube
- const amount = 8;
- const separationCube = 150;
- const offset = ( ( amount - 1 ) * separationCube ) / 2;
- for ( let i = 0; i < particlesTotal; i ++ ) {
- const x = ( i % amount ) * separationCube;
- const y = Math.floor( ( i / amount ) % amount ) * separationCube;
- const z = Math.floor( i / ( amount * amount ) ) * separationCube;
- positions.push( x - offset, y - offset, z - offset );
- }
- // Random
- for ( let i = 0; i < particlesTotal; i ++ ) {
- positions.push(
- Math.random() * 4000 - 2000,
- Math.random() * 4000 - 2000,
- Math.random() * 4000 - 2000
- );
- }
- // Sphere
- const radius = 750;
- for ( let i = 0; i < particlesTotal; i ++ ) {
- const phi = Math.acos( - 1 + ( 2 * i ) / particlesTotal );
- const theta = Math.sqrt( particlesTotal * Math.PI ) * phi;
- positions.push(
- radius * Math.cos( theta ) * Math.sin( phi ),
- radius * Math.sin( theta ) * Math.sin( phi ),
- radius * Math.cos( phi )
- );
- }
- //
- renderer = new CSS3DRenderer();
- renderer.setSize( window.innerWidth, window.innerHeight );
- document.getElementById( 'container' ).appendChild( renderer.domElement );
- //
- controls = new TrackballControls( camera, renderer.domElement );
- //
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function transition() {
- const offset = current * particlesTotal * 3;
- const duration = 2000;
- for ( let i = 0, j = offset; i < particlesTotal; i ++, j += 3 ) {
- const object = objects[ i ];
- new TWEEN.Tween( object.position )
- .to( {
- x: positions[ j ],
- y: positions[ j + 1 ],
- z: positions[ j + 2 ]
- }, Math.random() * duration + duration )
- .easing( TWEEN.Easing.Exponential.InOut )
- .start();
- }
- new TWEEN.Tween( this )
- .to( {}, duration * 3 )
- .onComplete( transition )
- .start();
- current = ( current + 1 ) % 4;
- }
- function animate() {
- requestAnimationFrame( animate );
- TWEEN.update();
- controls.update();
- const time = performance.now();
- for ( let i = 0, l = objects.length; i < l; i ++ ) {
- const object = objects[ i ];
- const scale = Math.sin( ( Math.floor( object.position.x ) + time ) * 0.002 ) * 0.3 + 1;
- object.scale.set( scale, scale, scale );
- }
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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