360-photos.html - external/github.com/immersive-web/webxr-samples - Git at Google

 <!doctype html>
 <!--
 Copyright 2018 The Immersive Web Community Group

 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
 the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 the Software, and to permit persons to whom the Software is furnished to do so,
 subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 -->
 <html>
   <head>
     <meta charset='utf-8'>
     <meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no'>
     <meta name='mobile-web-app-capable' content='yes'>
     <meta name='apple-mobile-web-app-capable' content='yes'>
     <link rel='icon' type='image/png' sizes='32x32' href='favicon-32x32.png'>
     <link rel='icon' type='image/png' sizes='96x96' href='favicon-96x96.png'>
     <link rel='stylesheet' href='css/common.css'>

     <title>360 Photos</title>
   </head>
   <body>
     <header>
       <details open>
         <summary>360 Photos</summary>
         <p>
           This sample demonstrates displaying a 360 degree equirectangular stereo
           photo. It intentionally suppresses view position to ensure that the user
           cannot move out of the photo sphere.
           <a class="back" href="./">Back</a>
         </p>
       </details>
     </header>
     <script type="module">
       import {WebXRButton} from './js/util/webxr-button.js';
       import {Scene, WebXRView} from './js/render/scenes/scene.js';
       import {Renderer, createWebGLContext} from './js/render/core/renderer.js';
       import {Gltf2Node} from './js/render/nodes/gltf2.js';
       import {SkyboxNode} from './js/render/nodes/skybox.js';
       import {InlineViewerHelper} from './js/util/inline-viewer-helper.js';
       import {QueryArgs} from './js/util/query-args.js';

       // If requested, use the polyfill to provide support for mobile devices
       // and devices which only support WebVR.
       import WebXRPolyfill from './js/third-party/webxr-polyfill/build/webxr-polyfill.module.js';
       if (QueryArgs.getBool('usePolyfill', true)) {
         let polyfill = new WebXRPolyfill();
       }

       // XR globals.
       let xrButton = null;
       let xrImmersiveRefSpace = null;
       let inlineViewerHelper = null;

       // WebGL scene globals.
       let gl = null;
       let renderer = null;
       let scene = new Scene();
       scene.addNode(new SkyboxNode({
         url: 'media/textures/chess-pano-4k.png',
         displayMode: 'stereoTopBottom'
       }));

       function initXR() {
         xrButton = new WebXRButton({
           onRequestSession: onRequestSession,
           onEndSession: onEndSession
         });
         document.querySelector('header').appendChild(xrButton.domElement);

         if (navigator.xr) {
           navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
             xrButton.enabled = supported;
           });

           navigator.xr.requestSession('inline').then(onSessionStarted);
         }
       }

       function initGL() {
         if (gl)
           return;

         gl = createWebGLContext({
           xrCompatible: true
         });
         document.body.appendChild(gl.canvas);

         function onResize() {
           gl.canvas.width = gl.canvas.clientWidth * window.devicePixelRatio;
           gl.canvas.height = gl.canvas.clientHeight * window.devicePixelRatio;
         }
         window.addEventListener('resize', onResize);
         onResize();

         renderer = new Renderer(gl);
         scene.setRenderer(renderer);
       }

       function onRequestSession() {
         return navigator.xr.requestSession('immersive-vr').then((session) => {
           xrButton.setSession(session);
           session.isImmersive = true;
           onSessionStarted(session);
         });
       }

       function onSessionStarted(session) {
         session.addEventListener('end', onSessionEnded);

         initGL();
         scene.inputRenderer.useProfileControllerMeshes(session);

         let glLayer = new XRWebGLLayer(session, gl);
         session.updateRenderState({ baseLayer: glLayer });

         // When rendering 360 photos/videos you want to ensure that the user's
         // head is always at the center of the rendered media. Otherwise users
         // with 6DoF hardware could walk towards the edges and see a very skewed
         // or outright broken view of the image. To prevent that, we request a
         // 'position-disabled' reference space, which suppresses any positional
         // information from the headset. (As an added bonus this mode may be
         // more power efficient on some hardware!)
         let refSpaceType = session.isImmersive ? 'local' : 'viewer';
         session.requestReferenceSpace(refSpaceType).then((refSpace) => {
           if (session.isImmersive) {
             xrImmersiveRefSpace = refSpace;
           } else {
             inlineViewerHelper = new InlineViewerHelper(gl.canvas, refSpace);
           }
           session.requestAnimationFrame(onXRFrame);
         });
       }

       function onEndSession(session) {
         session.end();
       }

       function onSessionEnded(event) {
         if (event.session.isImmersive) {
           xrButton.setSession(null);
         }
       }

       function onXRFrame(t, frame) {
         let session = frame.session;
         let refSpace = session.isImmersive ?
                          xrImmersiveRefSpace :
                          inlineViewerHelper.referenceSpace;
         let pose = frame.getViewerPose(refSpace);

         scene.startFrame();

         session.requestAnimationFrame(onXRFrame);

         let glLayer = session.renderState.baseLayer;
         gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);
         gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);

         if (pose) {
           let views = [];
           for (let view of pose.views) {
             let renderView = new WebXRView(view, glLayer);

             // It's important to take into account which eye the view is
             // associated with in cases like this, since it informs which half
             // of the stereo image should be used when rendering the view.
             renderView.eye = view.eye
             views.push(renderView);
           }

           scene.updateInputSources(frame, refSpace);

           scene.drawViewArray(views);
         }

         scene.endFrame();
       }

       // Start the XR application.
       initXR();
     </script>
   </body>
 </html>
	<!doctype html>
	<!--
	Copyright 2018 The Immersive Web Community Group

	Permission is hereby granted, free of charge, to any person obtaining a copy of
	this software and associated documentation files (the "Software"), to deal in
	the Software without restriction, including without limitation the rights to
	use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
	the Software, and to permit persons to whom the Software is furnished to do so,
	subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all
	copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
	FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
	COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
	IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	-->
	<html>
	<head>
	<meta charset='utf-8'>
	<meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no'>
	<meta name='mobile-web-app-capable' content='yes'>
	<meta name='apple-mobile-web-app-capable' content='yes'>
	<link rel='icon' type='image/png' sizes='32x32' href='favicon-32x32.png'>
	<link rel='icon' type='image/png' sizes='96x96' href='favicon-96x96.png'>
	<link rel='stylesheet' href='css/common.css'>

	<title>360 Photos</title>
	</head>
	<body>
	<header>
	<details open>
	<summary>360 Photos</summary>
	<p>
	This sample demonstrates displaying a 360 degree equirectangular stereo
	photo. It intentionally suppresses view position to ensure that the user
	cannot move out of the photo sphere.
	<a class="back" href="./">Back</a>
	</p>
	</details>
	</header>
	<script type="module">
	import {WebXRButton} from './js/util/webxr-button.js';
	import {Scene, WebXRView} from './js/render/scenes/scene.js';
	import {Renderer, createWebGLContext} from './js/render/core/renderer.js';
	import {Gltf2Node} from './js/render/nodes/gltf2.js';
	import {SkyboxNode} from './js/render/nodes/skybox.js';
	import {InlineViewerHelper} from './js/util/inline-viewer-helper.js';
	import {QueryArgs} from './js/util/query-args.js';

	// If requested, use the polyfill to provide support for mobile devices
	// and devices which only support WebVR.
	import WebXRPolyfill from './js/third-party/webxr-polyfill/build/webxr-polyfill.module.js';
	if (QueryArgs.getBool('usePolyfill', true)) {
	let polyfill = new WebXRPolyfill();
	}

	// XR globals.
	let xrButton = null;
	let xrImmersiveRefSpace = null;
	let inlineViewerHelper = null;

	// WebGL scene globals.
	let gl = null;
	let renderer = null;
	let scene = new Scene();
	scene.addNode(new SkyboxNode({
	url: 'media/textures/chess-pano-4k.png',
	displayMode: 'stereoTopBottom'
	}));

	function initXR() {
	xrButton = new WebXRButton({
	onRequestSession: onRequestSession,
	onEndSession: onEndSession
	});
	document.querySelector('header').appendChild(xrButton.domElement);

	if (navigator.xr) {
	navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
	xrButton.enabled = supported;
	});

	navigator.xr.requestSession('inline').then(onSessionStarted);
	}
	}

	function initGL() {
	if (gl)
	return;

	gl = createWebGLContext({
	xrCompatible: true
	});
	document.body.appendChild(gl.canvas);

	function onResize() {
	gl.canvas.width = gl.canvas.clientWidth * window.devicePixelRatio;
	gl.canvas.height = gl.canvas.clientHeight * window.devicePixelRatio;
	}
	window.addEventListener('resize', onResize);
	onResize();

	renderer = new Renderer(gl);
	scene.setRenderer(renderer);
	}

	function onRequestSession() {
	return navigator.xr.requestSession('immersive-vr').then((session) => {
	xrButton.setSession(session);
	session.isImmersive = true;
	onSessionStarted(session);
	});
	}

	function onSessionStarted(session) {
	session.addEventListener('end', onSessionEnded);

	initGL();
	scene.inputRenderer.useProfileControllerMeshes(session);

	let glLayer = new XRWebGLLayer(session, gl);
	session.updateRenderState({ baseLayer: glLayer });

	// When rendering 360 photos/videos you want to ensure that the user's
	// head is always at the center of the rendered media. Otherwise users
	// with 6DoF hardware could walk towards the edges and see a very skewed
	// or outright broken view of the image. To prevent that, we request a
	// 'position-disabled' reference space, which suppresses any positional
	// information from the headset. (As an added bonus this mode may be
	// more power efficient on some hardware!)
	let refSpaceType = session.isImmersive ? 'local' : 'viewer';
	session.requestReferenceSpace(refSpaceType).then((refSpace) => {
	if (session.isImmersive) {
	xrImmersiveRefSpace = refSpace;
	} else {
	inlineViewerHelper = new InlineViewerHelper(gl.canvas, refSpace);
	}
	session.requestAnimationFrame(onXRFrame);
	});
	}

	function onEndSession(session) {
	session.end();
	}

	function onSessionEnded(event) {
	if (event.session.isImmersive) {
	xrButton.setSession(null);
	}
	}

	function onXRFrame(t, frame) {
	let session = frame.session;
	let refSpace = session.isImmersive ?
	xrImmersiveRefSpace :
	inlineViewerHelper.referenceSpace;
	let pose = frame.getViewerPose(refSpace);

	scene.startFrame();

	session.requestAnimationFrame(onXRFrame);

	let glLayer = session.renderState.baseLayer;
	gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);
	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);

	if (pose) {
	let views = [];
	for (let view of pose.views) {
	let renderView = new WebXRView(view, glLayer);

	// It's important to take into account which eye the view is
	// associated with in cases like this, since it informs which half
	// of the stereo image should be used when rendering the view.
	renderView.eye = view.eye
	views.push(renderView);
	}

	scene.updateInputSources(frame, refSpace);

	scene.drawViewArray(views);
	}

	scene.endFrame();
	}

	// Start the XR application.
	initXR();
	</script>
	</body>
	</html>