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218 lines
5.0 KiB
218 lines
5.0 KiB
3 years ago
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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 - drag controls</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: #444;
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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">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - drag controls<br />
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Use "Shift+Click" to add/remove objects to/from a group.<br />
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Grouped objects can be transformed as a union.
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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 { DragControls } from 'three/addons/controls/DragControls.js';
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let container;
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let camera, scene, renderer;
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let controls, group;
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let enableSelection = false;
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const objects = [];
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const mouse = new THREE.Vector2(), raycaster = new THREE.Raycaster();
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init();
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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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group = new THREE.Group();
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scene.add( group );
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const geometry = new THREE.BoxGeometry( 40, 40, 40 );
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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() * 1000 - 500;
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object.position.y = Math.random() * 600 - 300;
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object.position.z = Math.random() * 800 - 400;
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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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objects.push( 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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controls = new DragControls( [ ... objects ], camera, renderer.domElement );
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controls.addEventListener( 'drag', render );
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//
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window.addEventListener( 'resize', onWindowResize );
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document.addEventListener( 'click', onClick );
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window.addEventListener( 'keydown', onKeyDown );
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window.addEventListener( 'keyup', onKeyUp );
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render();
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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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render();
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}
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function onKeyDown( event ) {
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enableSelection = ( event.keyCode === 16 ) ? true : false;
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}
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function onKeyUp() {
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enableSelection = false;
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}
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function onClick( event ) {
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event.preventDefault();
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if ( enableSelection === true ) {
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const draggableObjects = controls.getObjects();
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draggableObjects.length = 0;
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mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
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mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
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raycaster.setFromCamera( mouse, camera );
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const intersections = raycaster.intersectObjects( objects, true );
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if ( intersections.length > 0 ) {
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const object = intersections[ 0 ].object;
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if ( group.children.includes( object ) === true ) {
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object.material.emissive.set( 0x000000 );
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scene.attach( object );
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} else {
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object.material.emissive.set( 0xaaaaaa );
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group.attach( object );
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}
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controls.transformGroup = true;
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draggableObjects.push( group );
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}
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if ( group.children.length === 0 ) {
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controls.transformGroup = false;
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draggableObjects.push( ...objects );
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}
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}
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render();
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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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</script>
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</body>
|
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</html>
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