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 vr - multiview</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
		<style>
			body {
				font-family: Monospace;
				background-color: #101010;
				color: #fff;
				margin: 0px;
				overflow: hidden;
			}
			a {
				color: #48f;
			}
		</style>
		<!-- WebXR Device API (For Chrome M76+), expires 12/04/2019 -->
		<meta http-equiv="origin-trial" content="Aq9LklhCLNUveuCr7QTpGpqwCPG817cYHdVyQuJPOZYk47iRB390lUKa5edVmgS1pZSl8HPspElEC/91Fz55dwIAAABTeyJvcmlnaW4iOiJodHRwczovL3RocmVlanMub3JnOjQ0MyIsImZlYXR1cmUiOiJXZWJYUkRldmljZU03NiIsImV4cGlyeSI6MTU3NTQxNzU5OX0=">
	</head>
	<body>
		<script type="module">

			import * as THREE from '../build/three.module.js';
			import { BoxLineGeometry } from './jsm/geometries/BoxLineGeometry.js';
			import { VRButton } from './jsm/webxr/VRButton.js';
			import Stats from './jsm/libs/stats.module.js';

			var container;
			var camera, scene, renderer;

			var room;
			var stats;

			var radius = 0.02;

			var clock = new THREE.Clock();

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				//

				var canvas = document.createElement( 'canvas' );


				// Currently OVR_multiview2 is supported just on WebGL2 non-multisampled contexts
				// so we must create the context manually ensuring `antialias` is set to false
				//
				// There is an ongoing discussion on how to add multisampled multiview support
				// on the Khronos Group's WebGL repo: https://github.com/KhronosGroup/WebGL/issues/2912
				// as soon as that will get solved we will update the code so it will be
				// transparent for the user and you could use this extension with or without multisampled
				// contexts
				var context = canvas.getContext( 'webgl2', { antialias: false, xrCompatible: true } );

				renderer = new THREE.WebGLRenderer( { canvas: canvas, context: context } );

				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.vr.enabled = true;
				container.appendChild( renderer.domElement );

				var info = document.createElement( 'div' );
				info.style.position = 'absolute';
				info.style.top = '10px';
				info.style.width = '100%';
				info.style.textAlign = 'center';
				info.innerHTML = '<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> vr - multiview<br/>';
				info.innerHTML += renderer.extensions.get( 'OVR_multiview2' ) ? `<span style="color: #33ff33"><b>OVR_multiview2</b> is supported in your browser</span>` :
					`<span style="color: #ff3333"><b>OVR_multiview2</b> is not supported or enabled in your browser</span>`;

				container.appendChild( info );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x505050 );

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 10 );
				camera.position.set( 0, 1.6, 3 );

				room = new THREE.LineSegments(
					new BoxLineGeometry( 6, 6, 6, 10, 10, 10 ),
					new THREE.LineBasicMaterial( { color: renderer.extensions.get( 'OVR_multiview2' ) ? 0x99ff99 : 0xff3333 } )
				);
				room.geometry.translate( 0, 3, 0 );
				scene.add( room );

				var light = new THREE.HemisphereLight( 0xffffff, 0x444444 );
				light.position.set( 1, 1, 1 );
				scene.add( light );

				var geometry = new THREE.IcosahedronBufferGeometry( radius );

				for ( var i = 0; i < 2000; i ++ ) {

					var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );

					object.position.x = Math.random() * 4 - 2;
					object.position.y = Math.random() * 4;
					object.position.z = Math.random() * 4 - 2;

					object.userData.velocity = new THREE.Vector3();
					object.userData.velocity.x = 2 * Math.random() - 1;
					object.userData.velocity.y = 2 * Math.random() - 1;
					object.userData.velocity.z = 2 * Math.random() - 1;

					room.add( object );

				}

				//

				document.body.appendChild( VRButton.createButton( renderer ) );

				//

				stats = new Stats();
				container.appendChild( stats.dom );

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

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				renderer.setAnimationLoop( render );

			}

			function render() {

				//
				stats.update();

				var delta = clock.getDelta();

				var range = 3 - radius;

				for ( var i = 0; i < room.children.length; i ++ ) {

					var object = room.children[ i ];

					object.position.x += object.userData.velocity.x * delta;
					object.position.y += object.userData.velocity.y * delta;
					object.position.z += object.userData.velocity.z * delta;

					// keep objects inside room

					if ( object.position.x < - range || object.position.x > range ) {

						object.position.x = THREE.Math.clamp( object.position.x, - range, range );
						object.userData.velocity.x = - object.userData.velocity.x;

					}

					if ( object.position.y < radius || object.position.y > 6 ) {

						object.position.y = Math.max( object.position.y, radius );
						object.userData.velocity.y = - object.userData.velocity.y;

					}

					if ( object.position.z < - range || object.position.z > range ) {

						object.position.z = THREE.Math.clamp( object.position.z, - range, range );
						object.userData.velocity.z = - object.userData.velocity.z;

					}

				}

				renderer.render( scene, camera );

			}

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