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159 lines
3.9 KiB
159 lines
3.9 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js raycaster - 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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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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background-color: #fff;
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color: #333;
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}
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a {
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color: #08f;
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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="https://threejs.org" target="_blank" rel="noopener">three.js</a> raycaster - sprite<br></div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let renderer, scene, camera;
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let group;
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let selectedObject = null;
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const raycaster = new THREE.Raycaster();
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const pointer = new THREE.Vector2();
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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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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 15;
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controls.maxDistance = 250;
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// add sprites
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const sprite1 = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
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sprite1.position.set( 6, 5, 5 );
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sprite1.scale.set( 2, 5, 1 );
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group.add( sprite1 );
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const sprite2 = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f', sizeAttenuation: false } ) );
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sprite2.material.rotation = Math.PI / 3 * 4;
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sprite2.position.set( 8, - 2, 2 );
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sprite2.center.set( 0.5, 0 );
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sprite2.scale.set( .1, .5, .1 );
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group.add( sprite2 );
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const 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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const sprite3 = new THREE.Sprite( new THREE.SpriteMaterial( { color: '#69f' } ) );
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sprite3.position.set( 0, 2, 5 );
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sprite3.scale.set( 10, 2, 3 );
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sprite3.center.set( - 0.1, 0 );
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sprite3.material.rotation = Math.PI / 3;
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group2.add( sprite3 );
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window.addEventListener( 'resize', onWindowResize );
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document.addEventListener( 'pointermove', onPointerMove );
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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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function onPointerMove( event ) {
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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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pointer.x = ( event.clientX / window.innerWidth ) * 2 - 1;
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pointer.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
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raycaster.setFromCamera( pointer, camera );
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const intersects = raycaster.intersectObject( group, true );
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if ( intersects.length > 0 ) {
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const 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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</script>
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</body>
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</html>
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