<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>three.js css3d - sprites</title>
<style>
html, body {
height: 100%;
}
body {
background-color: #ffffff;
margin: 0;
font-family: Arial;
overflow: hidden;
}
a {
color: #8888ff;
}
#info {
position: absolute;
width: 100%;
color: #000000;
padding: 5px;
font-family: Monospace;
font-size: 13px;
font-weight: bold;
text-align: center;
z-index: 1;
}
</style>
</head>
<body>
<script src="../build/three.min.js"></script>
<script src="js/libs/tween.min.js"></script>
<script src="js/controls/TrackballControls.js"></script>
<script src="js/renderers/CSS3DRenderer.js"></script>
<div id="container"></div>
<div id="info"><a href="http://threejs.org" target="_blank">three.js css3d</a> - sprites.</div>
<script>
var camera, scene, renderer;
var controls;
var particlesTotal = 512;
var positions = [];
var objects = [];
var 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( new THREE.Vector3() );
scene = new THREE.Scene();
var image = document.createElement( 'img' );
image.addEventListener( 'load', function ( event ) {
for ( var i = 0; i < particlesTotal; i ++ ) {
var object = new THREE.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();
}, false );
image.src = 'textures/sprite.png';
// Plane
var amountX = 16;
var amountZ = 32;
var separation = 150;
var offsetX = ( ( amountX - 1 ) * separation ) / 2;
var offsetZ = ( ( amountZ - 1 ) * separation ) / 2;
for ( var i = 0; i < particlesTotal; i ++ ) {
var x = ( i % amountX ) * separation;
var z = Math.floor( i / amountX ) * separation;
var y = ( Math.sin( x * 0.5 ) + Math.sin( z * 0.5 ) ) * 200;
positions.push( x - offsetX, y, z - offsetZ );
}
// Cube
var amount = 8;
var separation = 150;
var offset = ( ( amount - 1 ) * separation ) / 2;
for ( var i = 0; i < particlesTotal; i ++ ) {
var x = ( i % amount ) * separation;
var y = Math.floor( ( i / amount ) % amount ) * separation;
var z = Math.floor( i / ( amount * amount ) ) * separation;
positions.push( x - offset, y - offset, z - offset );
}
// Random
for ( var i = 0; i < particlesTotal; i ++ ) {
positions.push(
Math.random() * 4000 - 2000,
Math.random() * 4000 - 2000,
Math.random() * 4000 - 2000
);
}
// Sphere
var radius = 750;
for ( var i = 0; i < particlesTotal; i ++ ) {
var phi = Math.acos( -1 + ( 2 * i ) / particlesTotal );
var 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 THREE.CSS3DRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.domElement.style.position = 'absolute';
document.getElementById( 'container' ).appendChild( renderer.domElement );
//
controls = new THREE.TrackballControls( camera, renderer.domElement );
controls.rotateSpeed = 0.5;
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function transition() {
var offset = current * particlesTotal * 3;
var duration = 2000;
for ( var i = 0, j = offset; i < particlesTotal; i ++, j += 3 ) {
var 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();
var time = performance.now();
for ( var i = 0, l = objects.length; i < l; i ++ ) {
var object = objects[ i ];
var 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>