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205 lines
4.9 KiB
205 lines
4.9 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - equirectangular panorama</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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</head>
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<body>
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<div id="container"></div>
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<div id="info">
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<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 />
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drag equirectangular texture into the page.
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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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let camera, scene, renderer;
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let isUserInteracting = false,
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onPointerDownMouseX = 0, onPointerDownMouseY = 0,
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lon = 0, onPointerDownLon = 0,
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lat = 0, onPointerDownLat = 0,
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phi = 0, theta = 0;
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init();
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animate();
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function init() {
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const container = document.getElementById( 'container' );
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camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
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scene = new THREE.Scene();
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const geometry = new THREE.SphereGeometry( 500, 60, 40 );
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// invert the geometry on the x-axis so that all of the faces point inward
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geometry.scale( - 1, 1, 1 );
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const texture = new THREE.TextureLoader().load( 'textures/2294472375_24a3b8ef46_o.jpg' );
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const material = new THREE.MeshBasicMaterial( { map: texture } );
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const mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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container.style.touchAction = 'none';
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container.addEventListener( 'pointerdown', onPointerDown );
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document.addEventListener( 'wheel', onDocumentMouseWheel );
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//
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document.addEventListener( 'dragover', function ( event ) {
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event.preventDefault();
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event.dataTransfer.dropEffect = 'copy';
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} );
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document.addEventListener( 'dragenter', function () {
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document.body.style.opacity = 0.5;
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} );
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document.addEventListener( 'dragleave', function () {
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document.body.style.opacity = 1;
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} );
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document.addEventListener( 'drop', function ( event ) {
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event.preventDefault();
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const reader = new FileReader();
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reader.addEventListener( 'load', function ( event ) {
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material.map.image.src = event.target.result;
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material.map.needsUpdate = true;
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} );
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reader.readAsDataURL( event.dataTransfer.files[ 0 ] );
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document.body.style.opacity = 1;
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} );
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//
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window.addEventListener( 'resize', onWindowResize );
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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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}
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function onPointerDown( event ) {
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if ( event.isPrimary === false ) return;
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isUserInteracting = true;
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onPointerDownMouseX = event.clientX;
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onPointerDownMouseY = event.clientY;
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onPointerDownLon = lon;
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onPointerDownLat = lat;
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document.addEventListener( 'pointermove', onPointerMove );
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document.addEventListener( 'pointerup', onPointerUp );
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}
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function onPointerMove( event ) {
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if ( event.isPrimary === false ) return;
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lon = ( onPointerDownMouseX - event.clientX ) * 0.1 + onPointerDownLon;
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lat = ( event.clientY - onPointerDownMouseY ) * 0.1 + onPointerDownLat;
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}
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function onPointerUp() {
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if ( event.isPrimary === false ) return;
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isUserInteracting = false;
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document.removeEventListener( 'pointermove', onPointerMove );
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document.removeEventListener( 'pointerup', onPointerUp );
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}
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function onDocumentMouseWheel( event ) {
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const fov = camera.fov + event.deltaY * 0.05;
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camera.fov = THREE.MathUtils.clamp( fov, 10, 75 );
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camera.updateProjectionMatrix();
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}
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function animate() {
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requestAnimationFrame( animate );
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update();
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}
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function update() {
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if ( isUserInteracting === false ) {
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lon += 0.1;
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}
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lat = Math.max( - 85, Math.min( 85, lat ) );
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phi = THREE.MathUtils.degToRad( 90 - lat );
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theta = THREE.MathUtils.degToRad( lon );
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const x = 500 * Math.sin( phi ) * Math.cos( theta );
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const y = 500 * Math.cos( phi );
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const z = 500 * Math.sin( phi ) * Math.sin( theta );
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camera.lookAt( x, y, z );
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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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