javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - equirectangular video 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="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - video panorama
		</div>

		<div id="container"></div>

		<video id="video" loop muted crossOrigin="anonymous" webkit-playsinline style="display:none">
			<source src="textures/pano.webm">
			<source src="textures/pano.mp4">
		</video>

		<script type="module">
			import {
				Math as _Math,
				Mesh,
				MeshBasicMaterial,
				PerspectiveCamera,
				Scene,
				SphereBufferGeometry,
				Vector3,
				VideoTexture,
				WebGLRenderer
			} from "../build/three.module.js";

			var camera, scene, renderer;

			var isUserInteracting = false,
				lon = 0, lat = 0,
				phi = 0, theta = 0,
				distance = 50,
				onPointerDownPointerX = 0,
				onPointerDownPointerY = 0,
				onPointerDownLon = 0,
				onPointerDownLat = 0;

			init();
			animate();

			function init() {

				var container, mesh;

				container = document.getElementById( 'container' );

				camera = new PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
				camera.target = new Vector3( 0, 0, 0 );

				scene = new Scene();

				var geometry = new SphereBufferGeometry( 500, 60, 40 );
				// invert the geometry on the x-axis so that all of the faces point inward
				geometry.scale( - 1, 1, 1 );

				var video = document.getElementById( 'video' );
				video.play();

				var texture = new VideoTexture( video );
				var material = new MeshBasicMaterial( { map: texture } );

				mesh = new Mesh( geometry, material );

				scene.add( mesh );

				renderer = new WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				document.addEventListener( 'mousedown', onDocumentMouseDown, false );
				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
				document.addEventListener( 'wheel', onDocumentMouseWheel, false );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function onDocumentMouseDown( event ) {

				event.preventDefault();

				isUserInteracting = true;

				onPointerDownPointerX = event.clientX;
				onPointerDownPointerY = event.clientY;

				onPointerDownLon = lon;
				onPointerDownLat = lat;

			}

			function onDocumentMouseMove( event ) {

				if ( isUserInteracting === true ) {

					lon = ( onPointerDownPointerX - event.clientX ) * 0.1 + onPointerDownLon;
					lat = ( event.clientY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;

				}

			}

			function onDocumentMouseUp() {

				isUserInteracting = false;

			}

			function onDocumentMouseWheel( event ) {

				distance += event.deltaY * 0.05;

				distance = _Math.clamp( distance, 1, 50 );

			}

			function animate() {

				requestAnimationFrame( animate );
				update();

			}

			function update() {

				lat = Math.max( - 85, Math.min( 85, lat ) );
				phi = _Math.degToRad( 90 - lat );
				theta = _Math.degToRad( lon );

				camera.position.x = distance * Math.sin( phi ) * Math.cos( theta );
				camera.position.y = distance * Math.cos( phi );
				camera.position.z = distance * Math.sin( phi ) * Math.sin( theta );

				camera.lookAt( camera.target );

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>