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160 lines
3.7 KiB
160 lines
3.7 KiB
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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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font-family: Monospace;
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font-size: 13px;
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text-align: center;
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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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#info{
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position: absolute;
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z-index: 1;
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width: 100%;
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padding: 5px;
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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, scene, camera;
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var controls, group;
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init();
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animate();
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function init() {
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// init renderer
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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// init scene
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xffffff );
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group = new THREE.Group();
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scene.add( group );
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// init camera
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camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 15, 15, 15 );
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camera.lookAt( scene.position );
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controls = new THREE.OrbitControls( camera, renderer.domElement );
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controls.enableRotate = true;
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// add sprites
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var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
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sprite.position.set( 6, 5, 5 );
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sprite.scale.set( 2, 5, 1 );
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group.add( sprite );
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var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
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sprite.material.rotation = Math.PI / 3 * 4;
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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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group.add( sprite );
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var group2 = new THREE.Object3D();
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group2.scale.set( 1, 2, 1 );
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group2.position.set( - 5, 0, 0 );
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group2.rotation.set( Math.PI / 2, 0, 0 );
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group.add( group2 );
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var sprite = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
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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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group2.add( sprite );
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window.addEventListener( 'resize', onWindowResize, false );
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window.addEventListener( "mousemove", onDocumentMouseMove, false );
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}
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function animate() {
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renderer.render( scene, camera );
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requestAnimationFrame( animate );
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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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var selectedObject = null;
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function onDocumentMouseMove( event ) {
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event.preventDefault();
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if ( selectedObject ) {
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selectedObject.material.color.set( '#69f' );
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selectedObject = null;
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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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var res = intersects.filter( function ( res ) {
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return res && res.object;
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} )[ 0 ];
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if ( res && res.object ) {
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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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var raycaster = new THREE.Raycaster();
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var mouseVector = new THREE.Vector3();
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function getIntersects( x, y ) {
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x = ( x / window.innerWidth ) * 2 - 1;
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y = - ( y / window.innerHeight ) * 2 + 1;
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mouseVector.set( x, y, 0.5 );
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raycaster.setFromCamera( mouseVector, camera );
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return raycaster.intersectObject( group, true );
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}
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</script>
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</body>
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</html>
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