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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - scene - multiple - compare</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>
- .container {
- position: absolute;
- width: 100%;
- height: 100%;
- }
- .slider {
- position: absolute;
- cursor: ew-resize;
- width: 40px;
- height: 40px;
- background-color: #F32196;
- opacity: 0.7;
- border-radius: 50%;
- top: calc(50% - 20px);
- left: calc(50% - 20px);
- }
- </style>
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - multiple scenes comparison<br />
- </div>
- <div class="container">
- <div class="slider"></div>
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- let container, camera, renderer, controls;
- let sceneL, sceneR;
- let sliderPos = window.innerWidth / 2;
- init();
- function init() {
- container = document.querySelector( '.container' );
- sceneL = new THREE.Scene();
- sceneL.background = new THREE.Color( 0xBCD48F );
- sceneR = new THREE.Scene();
- sceneR.background = new THREE.Color( 0x8FBCD4 );
- camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 0.1, 100 );
- camera.position.z = 6;
- controls = new OrbitControls( camera, container );
- const light = new THREE.HemisphereLight( 0xffffff, 0x444444, 3 );
- light.position.set( - 2, 2, 2 );
- sceneL.add( light.clone() );
- sceneR.add( light.clone() );
- initMeshes();
- initSlider();
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setScissorTest( true );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- window.addEventListener( 'resize', onWindowResize );
- }
- function initMeshes() {
- const geometry = new THREE.IcosahedronGeometry( 1, 3 );
- const meshL = new THREE.Mesh( geometry, new THREE.MeshStandardMaterial() );
- sceneL.add( meshL );
- const meshR = new THREE.Mesh( geometry, new THREE.MeshStandardMaterial( { wireframe: true } ) );
- sceneR.add( meshR );
- }
- function initSlider() {
- const slider = document.querySelector( '.slider' );
- function onPointerDown() {
- if ( event.isPrimary === false ) return;
- controls.enabled = false;
- window.addEventListener( 'pointermove', onPointerMove );
- window.addEventListener( 'pointerup', onPointerUp );
- }
- function onPointerUp() {
- controls.enabled = true;
- window.removeEventListener( 'pointermove', onPointerMove );
- window.removeEventListener( 'pointerup', onPointerUp );
- }
- function onPointerMove( e ) {
- if ( event.isPrimary === false ) return;
- sliderPos = Math.max( 0, Math.min( window.innerWidth, e.pageX ) );
- slider.style.left = sliderPos - ( slider.offsetWidth / 2 ) + 'px';
- }
- slider.style.touchAction = 'none'; // disable touch scroll
- slider.addEventListener( 'pointerdown', onPointerDown );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- renderer.setScissor( 0, 0, sliderPos, window.innerHeight );
- renderer.render( sceneL, camera );
- renderer.setScissor( sliderPos, 0, window.innerWidth, window.innerHeight );
- renderer.render( sceneR, camera );
- }
- </script>
- </body>
- </html>
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