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224 lines
5.1 KiB
224 lines
5.1 KiB
2 years ago
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<!DOCTYPE html>
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<html>
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<head>
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<title>three.js css3d - sprites</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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background-color: #fff;
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color: #000;
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}
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a {
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color: #48f;
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}
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</style>
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</head>
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<body>
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<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> css3d - sprites</div>
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<div id="container"></div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { TWEEN } from 'three/addons/libs/tween.module.min.js';
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import { TrackballControls } from 'three/addons/controls/TrackballControls.js';
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import { CSS3DRenderer, CSS3DSprite } from 'three/addons/renderers/CSS3DRenderer.js';
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let camera, scene, renderer;
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let controls;
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const particlesTotal = 512;
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const positions = [];
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const objects = [];
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let current = 0;
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 5000 );
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camera.position.set( 600, 400, 1500 );
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camera.lookAt( 0, 0, 0 );
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scene = new THREE.Scene();
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const image = document.createElement( 'img' );
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image.addEventListener( 'load', function () {
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for ( let i = 0; i < particlesTotal; i ++ ) {
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const object = new CSS3DSprite( image.cloneNode() );
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object.position.x = Math.random() * 4000 - 2000,
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object.position.y = Math.random() * 4000 - 2000,
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object.position.z = Math.random() * 4000 - 2000;
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scene.add( object );
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objects.push( object );
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}
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transition();
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} );
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image.src = 'textures/sprite.png';
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// Plane
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const amountX = 16;
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const amountZ = 32;
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const separationPlane = 150;
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const offsetX = ( ( amountX - 1 ) * separationPlane ) / 2;
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const offsetZ = ( ( amountZ - 1 ) * separationPlane ) / 2;
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for ( let i = 0; i < particlesTotal; i ++ ) {
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const x = ( i % amountX ) * separationPlane;
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const z = Math.floor( i / amountX ) * separationPlane;
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const y = ( Math.sin( x * 0.5 ) + Math.sin( z * 0.5 ) ) * 200;
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positions.push( x - offsetX, y, z - offsetZ );
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}
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// Cube
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const amount = 8;
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const separationCube = 150;
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const offset = ( ( amount - 1 ) * separationCube ) / 2;
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for ( let i = 0; i < particlesTotal; i ++ ) {
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const x = ( i % amount ) * separationCube;
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const y = Math.floor( ( i / amount ) % amount ) * separationCube;
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const z = Math.floor( i / ( amount * amount ) ) * separationCube;
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positions.push( x - offset, y - offset, z - offset );
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}
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// Random
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for ( let i = 0; i < particlesTotal; i ++ ) {
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positions.push(
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Math.random() * 4000 - 2000,
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Math.random() * 4000 - 2000,
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Math.random() * 4000 - 2000
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);
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}
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// Sphere
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const radius = 750;
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for ( let i = 0; i < particlesTotal; i ++ ) {
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const phi = Math.acos( - 1 + ( 2 * i ) / particlesTotal );
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const theta = Math.sqrt( particlesTotal * Math.PI ) * phi;
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positions.push(
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radius * Math.cos( theta ) * Math.sin( phi ),
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radius * Math.sin( theta ) * Math.sin( phi ),
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radius * Math.cos( phi )
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);
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}
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//
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renderer = new CSS3DRenderer();
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.getElementById( 'container' ).appendChild( renderer.domElement );
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//
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controls = new TrackballControls( camera, renderer.domElement );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function transition() {
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const offset = current * particlesTotal * 3;
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const duration = 2000;
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for ( let i = 0, j = offset; i < particlesTotal; i ++, j += 3 ) {
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const object = objects[ i ];
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new TWEEN.Tween( object.position )
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.to( {
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x: positions[ j ],
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y: positions[ j + 1 ],
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z: positions[ j + 2 ]
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}, Math.random() * duration + duration )
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.easing( TWEEN.Easing.Exponential.InOut )
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.start();
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}
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new TWEEN.Tween( this )
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.to( {}, duration * 3 )
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.onComplete( transition )
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.start();
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current = ( current + 1 ) % 4;
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}
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function animate() {
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requestAnimationFrame( animate );
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TWEEN.update();
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controls.update();
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const time = performance.now();
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for ( let i = 0, l = objects.length; i < l; i ++ ) {
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const object = objects[ i ];
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const scale = Math.sin( ( Math.floor( object.position.x ) + time ) * 0.002 ) * 0.3 + 1;
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object.scale.set( scale, scale, scale );
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}
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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