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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgl - raycast - sprite</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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+ <style>
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+ body {
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+ margin: 0px;
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+ background-color: #fff;
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+ overflow: hidden;
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+ }
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+
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+ #info{
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+ position: absolute;
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+ z-index: 1;
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+ width: 100%;
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+ text-align: center;
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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="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl raycast sprite<br></div>
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+ <script src="../build/three.js"></script>
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+ <script src="./js/controls/OrbitControls.js"></script>
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+ <script>
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+ var renderer;
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+ var scene;
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+ var spriteGroup;
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+ var camera;
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+ var controls;
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+
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+ init();
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+
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+ function init() {
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+
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+ initRender();
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+ initScene();
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+ initCamera();
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+ addSprite();
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+
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+ render();
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+ window.addEventListener( "mousemove", onDocumentMouseMove, false );
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+
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+ }
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+
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+ function render() {
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+
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+ renderer.render( scene, camera );
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+ requestAnimationFrame( render );
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+
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+ }
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+
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+ function initRender() {
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+
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+ renderer = new THREE.WebGLRenderer( {
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+ antialias: true
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+ } );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ document.body.appendChild( renderer.domElement );
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+ renderer.setClearColor( 0xFFFFFF, 1.0 );
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+
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+ }
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+
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+ function initScene() {
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+
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+ scene = new THREE.Scene();
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+ spriteGroup = new THREE.Object3D();
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+ scene.add( spriteGroup );
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+
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+ }
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+
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+ function initCamera() {
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+
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+ camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
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+ camera.position.y = 15;
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+ camera.position.z = 15;
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+ camera.position.x = 15;
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+ camera.lookAt( {
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+ x: 0,
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+ y: 0,
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+ z: 0
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+ } );
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+
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+ controls = new THREE.OrbitControls( camera, renderer.domElement );
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+ controls.target = new THREE.Vector3( 0, 0, 0 );
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+ controls.enableRotate = true;
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+
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+ }
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+
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+ function addSprite() {
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+
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+ var sprite;
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+
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+ sprite = makeSprite( '#69f', spriteGroup );
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+ sprite.position.set( 6, 5, 5 );
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+ sprite.scale.set( 2, 5, 1 );
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+
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+ sprite = makeSprite( '#69f', spriteGroup );
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+ sprite.position.set( 8, - 2, 2 );
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+ sprite.center.set( 0.5, 0 );
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+ sprite.scale.set( 1, - 5, 1 );
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+ sprite.material.rotation = Math.PI / 3 * 4;
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+
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+ var g = new THREE.Object3D();
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+ spriteGroup.add( g );
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+ g.scale.set( 1, 2, 1 );
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+ g.position.set( - 5, 0, 0 );
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+ g.rotation.set( Math.PI / 2, 0, 0 );
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+
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+ sprite = makeSprite( '#69f', g );
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+ sprite.position.set( 0, 2, 5 );
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+ sprite.scale.set( 10, 2, 3 );
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+ sprite.center.set( - 0.1, 0 );
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+ sprite.material.rotation = Math.PI / 3;
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+
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+ }
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+
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+ function makeSprite( color, parent ) {
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+
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+ var sprite = new THREE.Sprite( new THREE.SpriteMaterial( {
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+ color: color
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+ } ) );
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+ parent.add( sprite );
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+ return sprite;
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+
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+ }
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+
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+ var selectedObject = null;
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+
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+ function onDocumentMouseMove( event ) {
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+
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+ event.preventDefault();
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+ if ( selectedObject ) {
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+
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+ selectedObject.material.color.set( '#69f' );
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+ selectedObject = null;
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+
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+ }
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+
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+ var intersects = getIntersects( event.layerX, event.layerY );
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+ if ( intersects.length > 0 ) {
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+
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+ var res = intersects.filter( function ( res ) {
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+
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+ return res && res.object;
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+
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+ } )[ 0 ];
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+
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+ if ( res && res.object ) {
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+
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+ selectedObject = res.object;
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+ selectedObject.material.color.set( '#f00' );
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+
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+ }
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+
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+ }
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+
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+ }
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+
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+ var raycaster = new THREE.Raycaster();
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+ var mouseVector = new THREE.Vector3();
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+
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+ function getIntersects( x, y ) {
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+
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+ mouseVector.set(
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+ ( x / window.innerWidth ) * 2 - 1, - ( y / window.innerHeight ) * 2 + 1,
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+ 0.5 );
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+ raycaster.setFromCamera( mouseVector, camera );
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+ var intersects = raycaster.intersectObjects( [ spriteGroup ], true );
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+ return intersects;
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+
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+ }
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+ </script>
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+</body>
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+</html>
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06wj