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| <html lang="en"> | |
| <head> | |
| <title>three.js webgl - drag controls</title> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"> | |
| <link type="text/css" rel="stylesheet" href="main.css"> | |
| <style> | |
| body { | |
| background-color: #f0f0f0; | |
| color: #444; | |
| } | |
| a { | |
| color: #08f; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="info"> | |
| <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - drag controls<br /> | |
| Use "Shift+Click" to add/remove objects to/from a group.<br /> | |
| Grouped objects can be transformed as a union. | |
| </div> | |
| <!-- Import maps polyfill --> | |
| <!-- Remove this when import maps will be widely supported --> | |
| <script async src="https://unpkg.com/es-module-shims@1.6.3/dist/es-module-shims.js"></script> | |
| <script type="importmap"> | |
| { | |
| "imports": { | |
| "three": "../build/three.module.js", | |
| "three/addons/": "./jsm/" | |
| } | |
| } | |
| </script> | |
| <script type="module"> | |
| import * as THREE from 'three'; | |
| import { DragControls } from 'three/addons/controls/DragControls.js'; | |
| let container; | |
| let camera, scene, renderer; | |
| let controls, group; | |
| let enableSelection = false; | |
| const objects = []; | |
| const mouse = new THREE.Vector2(), raycaster = new THREE.Raycaster(); | |
| init(); | |
| function init() { | |
| container = document.createElement( 'div' ); | |
| document.body.appendChild( container ); | |
| camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 5000 ); | |
| camera.position.z = 1000; | |
| scene = new THREE.Scene(); | |
| scene.background = new THREE.Color( 0xf0f0f0 ); | |
| scene.add( new THREE.AmbientLight( 0x505050 ) ); | |
| const light = new THREE.SpotLight( 0xffffff, 1.5 ); | |
| light.position.set( 0, 500, 2000 ); | |
| light.angle = Math.PI / 9; | |
| light.castShadow = true; | |
| light.shadow.camera.near = 1000; | |
| light.shadow.camera.far = 4000; | |
| light.shadow.mapSize.width = 1024; | |
| light.shadow.mapSize.height = 1024; | |
| scene.add( light ); | |
| group = new THREE.Group(); | |
| scene.add( group ); | |
| const geometry = new THREE.BoxGeometry( 40, 40, 40 ); | |
| for ( let i = 0; i < 200; i ++ ) { | |
| const object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) ); | |
| object.position.x = Math.random() * 1000 - 500; | |
| object.position.y = Math.random() * 600 - 300; | |
| object.position.z = Math.random() * 800 - 400; | |
| object.rotation.x = Math.random() * 2 * Math.PI; | |
| object.rotation.y = Math.random() * 2 * Math.PI; | |
| object.rotation.z = Math.random() * 2 * Math.PI; | |
| object.scale.x = Math.random() * 2 + 1; | |
| object.scale.y = Math.random() * 2 + 1; | |
| object.scale.z = Math.random() * 2 + 1; | |
| object.castShadow = true; | |
| object.receiveShadow = true; | |
| scene.add( object ); | |
| objects.push( object ); | |
| } | |
| renderer = new THREE.WebGLRenderer( { antialias: true } ); | |
| renderer.setPixelRatio( window.devicePixelRatio ); | |
| renderer.setSize( window.innerWidth, window.innerHeight ); | |
| renderer.shadowMap.enabled = true; | |
| renderer.shadowMap.type = THREE.PCFShadowMap; | |
| container.appendChild( renderer.domElement ); | |
| controls = new DragControls( [ ... objects ], camera, renderer.domElement ); | |
| controls.addEventListener( 'drag', render ); | |
| // | |
| window.addEventListener( 'resize', onWindowResize ); | |
| document.addEventListener( 'click', onClick ); | |
| window.addEventListener( 'keydown', onKeyDown ); | |
| window.addEventListener( 'keyup', onKeyUp ); | |
| render(); | |
| } | |
| function onWindowResize() { | |
| camera.aspect = window.innerWidth / window.innerHeight; | |
| camera.updateProjectionMatrix(); | |
| renderer.setSize( window.innerWidth, window.innerHeight ); | |
| render(); | |
| } | |
| function onKeyDown( event ) { | |
| enableSelection = ( event.keyCode === 16 ) ? true : false; | |
| } | |
| function onKeyUp() { | |
| enableSelection = false; | |
| } | |
| function onClick( event ) { | |
| event.preventDefault(); | |
| if ( enableSelection === true ) { | |
| const draggableObjects = controls.getObjects(); | |
| draggableObjects.length = 0; | |
| mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1; | |
| mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1; | |
| raycaster.setFromCamera( mouse, camera ); | |
| const intersections = raycaster.intersectObjects( objects, true ); | |
| if ( intersections.length > 0 ) { | |
| const object = intersections[ 0 ].object; | |
| if ( group.children.includes( object ) === true ) { | |
| object.material.emissive.set( 0x000000 ); | |
| scene.attach( object ); | |
| } else { | |
| object.material.emissive.set( 0xaaaaaa ); | |
| group.attach( object ); | |
| } | |
| controls.transformGroup = true; | |
| draggableObjects.push( group ); | |
| } | |
| if ( group.children.length === 0 ) { | |
| controls.transformGroup = false; | |
| draggableObjects.push( ...objects ); | |
| } | |
| } | |
| render(); | |
| } | |
| function render() { | |
| renderer.render( scene, camera ); | |
| } | |
| </script> | |
| </body> | |
| </html> | |