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webgl_raycast_sprite.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - raycast - sprite</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 {
font-family: Monospace;
font-size: 13px;
text-align: center;
margin: 0px;
background-color: #fff;
overflow: hidden;
}
#info{
position: absolute;
z-index: 1;
width: 100%;
padding: 5px;
text-align: center;
}
</style>
</head>
<body>
<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl raycast sprite<br></div>
<script src="../build/three.js"></script>
<script src="./js/controls/OrbitControls.js"></script>
<script>
var renderer, scene, camera;
var controls, group;
init();
animate();
function init() {
// init renderer
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
// init scene
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xffffff );
group = new THREE.Group();
scene.add( group );
// init camera
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.set( 15, 15, 15 );
camera.lookAt( scene.position );
controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.enableRotate = true;
// add sprites
var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
sprite.position.set( 6, 5, 5 );
sprite.scale.set( 2, 5, 1 );
group.add( sprite );
var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
sprite.material.rotation = Math.PI / 3 * 4;
sprite.position.set( 8, - 2, 2 );
sprite.center.set( 0.5, 0 );
sprite.scale.set( 1, - 5, 1 );
group.add( sprite );
var group2 = new THREE.Object3D();
group2.scale.set( 1, 2, 1 );
group2.position.set( - 5, 0, 0 );
group2.rotation.set( Math.PI / 2, 0, 0 );
group.add( group2 );
var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
sprite.position.set( 0, 2, 5 );
sprite.scale.set( 10, 2, 3 );
sprite.center.set( - 0.1, 0 );
sprite.material.rotation = Math.PI / 3;
group2.add( sprite );
window.addEventListener( 'resize', onWindowResize, false );
window.addEventListener( "mousemove", onDocumentMouseMove, false );
}
function animate() {
renderer.render( scene, camera );
requestAnimationFrame( animate );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
var selectedObject = null;
function onDocumentMouseMove( event ) {
event.preventDefault();
if ( selectedObject ) {
selectedObject.material.color.set( '#69f' );
selectedObject = null;
}
var intersects = getIntersects( event.layerX, event.layerY );
if ( intersects.length > 0 ) {
var res = intersects.filter( function ( res ) {
return res && res.object;
} )[ 0 ];
if ( res && res.object ) {
selectedObject = res.object;
selectedObject.material.color.set( '#f00' );
}
}
}
var raycaster = new THREE.Raycaster();
var mouseVector = new THREE.Vector3();
function getIntersects( x, y ) {
x = ( x / window.innerWidth ) * 2 - 1;
y = - ( y / window.innerHeight ) * 2 + 1;
mouseVector.set( x, y, 0.5 );
raycaster.setFromCamera( mouseVector, camera );
return raycaster.intersectObject( group, true );
}
</script>
</body>
</html>