<!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>.<br />
drag equirectangular texture into the page.
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.8.0/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';
let camera, scene, renderer;
let isUserInteracting = false,
onPointerDownMouseX = 0, onPointerDownMouseY = 0,
lon = 0, onPointerDownLon = 0,
lat = 0, onPointerDownLat = 0,
phi = 0, theta = 0;
init();
animate();
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 );
container.appendChild( renderer.domElement );
container.style.touchAction = 'none';
container.addEventListener( 'pointerdown', onPointerDown );
document.addEventListener( 'wheel', onDocumentMouseWheel );
//
document.addEventListener( 'dragover', function ( event ) {
event.preventDefault();
event.dataTransfer.dropEffect = 'copy';
} );
document.addEventListener( 'dragenter', function () {
document.body.style.opacity = 0.5;
} );
document.addEventListener( 'dragleave', function () {
document.body.style.opacity = 1;
} );
document.addEventListener( 'drop', function ( event ) {
event.preventDefault();
const reader = new FileReader();
reader.addEventListener( 'load', function ( event ) {
material.map.image.src = event.target.result;
material.map.needsUpdate = true;
} );
reader.readAsDataURL( event.dataTransfer.files[ 0 ] );
document.body.style.opacity = 1;
} );
//
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() {
requestAnimationFrame( animate );
update();
}
function update() {
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>