--- /dev/null
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <title>three.js webgl - sprites</title>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+ <style>
+ body {
+ padding:0;
+ margin:0;
+ font-weight: bold;
+ overflow:hidden;
+ }
+ </style>
+ </head>
+
+ <body>
+ <script src="../build/three.js"></script>
+
+ <script>
+
+ var camera, scene, renderer;
+ var cameraOrtho, sceneOrtho;
+
+ var spriteTL, spriteTR, spriteBL, spriteBR, spriteC;
+
+ var mapC;
+
+ var group;
+
+ init();
+ animate();
+
+ function init() {
+
+ var width = window.innerWidth;
+ var height = window.innerHeight;
+
+ camera = new THREE.PerspectiveCamera( 60, width / height, 1, 2100 );
+ camera.position.z = 1500;
+
+ cameraOrtho = new THREE.OrthographicCamera( - width / 2, width / 2, height / 2, - height / 2, 1, 10 );
+ cameraOrtho.position.z = 10;
+
+ scene = new THREE.Scene();
+ scene.fog = new THREE.Fog( 0x000000, 1500, 2100 );
+
+ sceneOrtho = new THREE.Scene();
+
+ // create sprites
+
+ var amount = 200;
+ var radius = 500;
+
+ var textureLoader = new THREE.TextureLoader();
+
+ var mapA = textureLoader.load( "textures/sprite0.png", createHUDSprites );
+ var mapB = textureLoader.load( "textures/sprite1.png" );
+ mapC = textureLoader.load( "textures/sprite2.png" );
+
+ group = new THREE.Group();
+
+ var materialC = new THREE.SpriteMaterial( { map: mapC, color: 0xffffff, fog: true } );
+ var materialB = new THREE.SpriteMaterial( { map: mapB, color: 0xffffff, fog: true } );
+
+ for ( var a = 0; a < amount; a ++ ) {
+
+ var x = Math.random() - 0.5;
+ var y = Math.random() - 0.5;
+ var z = Math.random() - 0.5;
+
+ var material;
+
+ if ( z < 0 ) {
+
+ material = materialB.clone();
+
+ } else {
+
+ material = materialC.clone();
+ material.color.setHSL( 0.5 * Math.random(), 0.75, 0.5 );
+ material.map.offset.set( -0.5, -0.5 );
+ material.map.repeat.set( 2, 2 );
+
+ }
+
+ var sprite = new THREE.Sprite( material );
+
+ sprite.position.set( x, y, z );
+ sprite.position.normalize();
+ sprite.position.multiplyScalar( radius );
+
+ group.add( sprite );
+
+ }
+
+ scene.add( group );
+
+ // renderer
+
+ renderer = new THREE.WebGLRenderer();
+ renderer.setPixelRatio( window.devicePixelRatio );
+ renderer.setSize( window.innerWidth, window.innerHeight );
+ renderer.autoClear = false; // To allow render overlay on top of sprited sphere
+
+ document.body.appendChild( renderer.domElement );
+
+ //
+
+ window.addEventListener( 'resize', onWindowResize, false );
+
+ }
+
+ function createHUDSprites ( texture ) {
+
+ var material = new THREE.SpriteMaterial( { map: texture } );
+
+ var width = material.map.image.width;
+ var height = material.map.image.height;
+
+ spriteTL = new THREE.Sprite( material );
+ spriteTL.scale.set( width, height, 1 );
+ sceneOrtho.add( spriteTL );
+
+ spriteTR = new THREE.Sprite( material );
+ spriteTR.scale.set( width, height, 1 );
+ sceneOrtho.add( spriteTR );
+
+ spriteBL = new THREE.Sprite( material );
+ spriteBL.scale.set( width, height, 1 );
+ sceneOrtho.add( spriteBL );
+
+ spriteBR = new THREE.Sprite( material );
+ spriteBR.scale.set( width, height, 1 );
+ sceneOrtho.add( spriteBR );
+
+ spriteC = new THREE.Sprite( material );
+ spriteC.scale.set( width, height, 1 );
+ sceneOrtho.add( spriteC );
+
+ updateHUDSprites();
+
+ }
+
+ function updateHUDSprites() {
+
+ var width = window.innerWidth / 2;
+ var height = window.innerHeight / 2;
+
+ var material = spriteTL.material;
+
+ var imageWidth = material.map.image.width / 2;
+ var imageHeight = material.map.image.height / 2;
+
+ spriteTL.position.set( - width + imageWidth, height - imageHeight, 1 ); // top left
+ spriteTR.position.set( width - imageWidth, height - imageHeight, 1 ); // top right
+ spriteBL.position.set( - width + imageWidth, - height + imageHeight, 1 ); // bottom left
+ spriteBR.position.set( width - imageWidth, - height + imageHeight, 1 ); // bottom right
+ spriteC.position.set( 0, 0, 1 ); // center
+
+ }
+
+ function onWindowResize() {
+
+ var width = window.innerWidth;
+ var height = window.innerHeight;
+
+ camera.aspect = width / height;
+ camera.updateProjectionMatrix();
+
+ cameraOrtho.left = - width / 2;
+ cameraOrtho.right = width / 2;
+ cameraOrtho.top = height / 2;
+ cameraOrtho.bottom = - height / 2;
+ cameraOrtho.updateProjectionMatrix();
+
+ updateHUDSprites();
+
+ renderer.setSize( window.innerWidth, window.innerHeight );
+
+ }
+
+ function animate() {
+
+ requestAnimationFrame( animate );
+ render();
+
+ }
+
+ function render() {
+
+ var time = Date.now() / 1000;
+
+ for ( var i = 0, l = group.children.length; i < l; i ++ ) {
+
+ var sprite = group.children[ i ];
+ var material = sprite.material;
+ var scale = Math.sin( time + sprite.position.x * 0.01 ) * 0.3 + 1.0;
+
+ var imageWidth = 1;
+ var imageHeight = 1;
+
+ if ( material.map && material.map.image && material.map.image.width ) {
+
+ imageWidth = material.map.image.width;
+ imageHeight = material.map.image.height;
+
+ }
+
+ sprite.material.rotation += 0.1 * ( i / l );
+ sprite.scale.set( scale * imageWidth, scale * imageHeight, 1.0 );
+
+ if ( material.map !== mapC ) {
+
+ material.opacity = Math.sin( time + sprite.position.x * 0.01 ) * 0.4 + 0.6;
+
+ }
+
+ }
+
+ group.rotation.x = time * 0.5;
+ group.rotation.y = time * 0.75;
+ group.rotation.z = time * 1.0;
+
+ renderer.clear();
+ renderer.render( scene, camera );
+ renderer.clearDepth();
+ renderer.render( sceneOrtho, cameraOrtho );
+
+ }
+
+ </script>
+ </body>
+</html>
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