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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - equirectangular panorama</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">
- </head>
- <body>
- <div id="container"></div>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js webgl</a> - equirectangular panorama demo. photo by <a href="http://www.flickr.com/photos/jonragnarsson/2294472375/" target="_blank" rel="noopener">Jón Ragnarsson</a>
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- let camera, scene, renderer;
- let isUserInteracting = false,
- onPointerDownMouseX = 0, onPointerDownMouseY = 0,
- lon = 0, onPointerDownLon = 0,
- lat = 0, onPointerDownLat = 0,
- phi = 0, theta = 0;
- init();
- function init() {
- const container = document.getElementById( 'container' );
- camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
- scene = new THREE.Scene();
- const geometry = new THREE.SphereGeometry( 500, 60, 40 );
- // invert the geometry on the x-axis so that all of the faces point inward
- geometry.scale( - 1, 1, 1 );
- const texture = new THREE.TextureLoader().load( 'textures/2294472375_24a3b8ef46_o.jpg' );
- texture.colorSpace = THREE.SRGBColorSpace;
- const material = new THREE.MeshBasicMaterial( { map: texture } );
- const mesh = new THREE.Mesh( geometry, material );
- scene.add( mesh );
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- container.style.touchAction = 'none';
- container.addEventListener( 'pointerdown', onPointerDown );
- document.addEventListener( 'wheel', onDocumentMouseWheel );
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function onPointerDown( event ) {
- if ( event.isPrimary === false ) return;
- isUserInteracting = true;
- onPointerDownMouseX = event.clientX;
- onPointerDownMouseY = event.clientY;
- onPointerDownLon = lon;
- onPointerDownLat = lat;
- document.addEventListener( 'pointermove', onPointerMove );
- document.addEventListener( 'pointerup', onPointerUp );
- }
- function onPointerMove( event ) {
- if ( event.isPrimary === false ) return;
- lon = ( onPointerDownMouseX - event.clientX ) * 0.1 + onPointerDownLon;
- lat = ( event.clientY - onPointerDownMouseY ) * 0.1 + onPointerDownLat;
- }
- function onPointerUp() {
- if ( event.isPrimary === false ) return;
- isUserInteracting = false;
- document.removeEventListener( 'pointermove', onPointerMove );
- document.removeEventListener( 'pointerup', onPointerUp );
- }
- function onDocumentMouseWheel( event ) {
- const fov = camera.fov + event.deltaY * 0.05;
- camera.fov = THREE.MathUtils.clamp( fov, 10, 75 );
- camera.updateProjectionMatrix();
- }
- function animate() {
- if ( isUserInteracting === false ) {
- lon += 0.1;
- }
- lat = Math.max( - 85, Math.min( 85, lat ) );
- phi = THREE.MathUtils.degToRad( 90 - lat );
- theta = THREE.MathUtils.degToRad( lon );
- const x = 500 * Math.sin( phi ) * Math.cos( theta );
- const y = 500 * Math.cos( phi );
- const z = 500 * Math.sin( phi ) * Math.sin( theta );
- camera.lookAt( x, y, z );
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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