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217 lines
5.1 KiB
217 lines
5.1 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - box selection</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: #f0f0f0;
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color: #000;
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touch-action: none;
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}
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a {
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color: #08e;
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}
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.selectBox {
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border: 1px solid #55aaff;
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background-color: rgba(75, 160, 255, 0.3);
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position: fixed;
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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">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - box selection
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</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 Stats from 'three/addons/libs/stats.module.js';
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import { SelectionBox } from 'three/addons/interactive/SelectionBox.js';
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import { SelectionHelper } from 'three/addons/interactive/SelectionHelper.js';
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let container, stats;
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let camera, scene, renderer;
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 5000 );
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camera.position.z = 1000;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0f0 );
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scene.add( new THREE.AmbientLight( 0x505050 ) );
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const light = new THREE.SpotLight( 0xffffff, 1.5 );
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light.position.set( 0, 500, 2000 );
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light.angle = Math.PI / 9;
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light.castShadow = true;
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light.shadow.camera.near = 1000;
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light.shadow.camera.far = 4000;
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light.shadow.mapSize.width = 1024;
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light.shadow.mapSize.height = 1024;
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scene.add( light );
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const geometry = new THREE.BoxGeometry( 20, 20, 20 );
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for ( let i = 0; i < 200; i ++ ) {
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const object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );
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object.position.x = Math.random() * 1600 - 800;
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object.position.y = Math.random() * 900 - 450;
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object.position.z = Math.random() * 900 - 500;
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object.rotation.x = Math.random() * 2 * Math.PI;
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object.rotation.y = Math.random() * 2 * Math.PI;
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object.rotation.z = Math.random() * 2 * Math.PI;
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object.scale.x = Math.random() * 2 + 1;
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object.scale.y = Math.random() * 2 + 1;
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object.scale.z = Math.random() * 2 + 1;
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object.castShadow = true;
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object.receiveShadow = true;
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scene.add( object );
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}
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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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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.PCFShadowMap;
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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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window.addEventListener( 'resize', onWindowResize );
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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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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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renderer.render( scene, camera );
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}
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const selectionBox = new SelectionBox( camera, scene );
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const helper = new SelectionHelper( renderer, 'selectBox' );
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document.addEventListener( 'pointerdown', function ( event ) {
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for ( const item of selectionBox.collection ) {
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item.material.emissive.set( 0x000000 );
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}
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selectionBox.startPoint.set(
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( event.clientX / window.innerWidth ) * 2 - 1,
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- ( event.clientY / window.innerHeight ) * 2 + 1,
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0.5 );
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} );
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document.addEventListener( 'pointermove', function ( event ) {
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if ( helper.isDown ) {
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for ( let i = 0; i < selectionBox.collection.length; i ++ ) {
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selectionBox.collection[ i ].material.emissive.set( 0x000000 );
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}
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selectionBox.endPoint.set(
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( event.clientX / window.innerWidth ) * 2 - 1,
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- ( event.clientY / window.innerHeight ) * 2 + 1,
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0.5 );
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const allSelected = selectionBox.select();
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for ( let i = 0; i < allSelected.length; i ++ ) {
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allSelected[ i ].material.emissive.set( 0xffffff );
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}
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}
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} );
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document.addEventListener( 'pointerup', function ( event ) {
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selectionBox.endPoint.set(
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( event.clientX / window.innerWidth ) * 2 - 1,
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- ( event.clientY / window.innerHeight ) * 2 + 1,
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0.5 );
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const allSelected = selectionBox.select();
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for ( let i = 0; i < allSelected.length; i ++ ) {
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allSelected[ i ].material.emissive.set( 0xffffff );
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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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