input-selection.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'>

     <!-- Origin Trial Token, feature = WebXR Device API, origin = https://immersive-web.github.io, expires = 2018-08-28 -->
 <meta http-equiv="origin-trial" data-feature="WebXR Device API" data-expires="2018-08-28" content="AnNpu7ceXvLew05ccD8Zr1OZsdZiB2hLQKK82kTTMDwF7oRKtP3QEJ4RzkeHrmB8Sq0vSV6ZNmszpBCZ0I8p9gAAAABceyJvcmlnaW4iOiJodHRwczovL2ltbWVyc2l2ZS13ZWIuZ2l0aHViLmlvOjQ0MyIsImZlYXR1cmUiOiJXZWJYUkRldmljZSIsImV4cGlyeSI6MTUzNTQxNDQwMH0=">

     <title>Input Selection</title>

     <link href='css/common.css' rel='stylesheet'></link>

     <!--The polyfill is not needed for browser that have native API support,
         but is linked by these samples for wider compatibility.-->
     <!--script src='https://cdn.jsdelivr.net/npm/webxr-polyfill@latest/build/webxr-polyfill.js'></script-->
     <script src='js/webxr-polyfill.js'></script>

     <!--This script patches up around implementation differences in past browser versions
         so that the samples can always be written against the most recent spec changes.
         It won't be necessary after the API has been officially shipped for a bit.-->
     <script src='js/webxr-version-shim.js'></script>

     <script src='js/cottontail/build/cottontail.js'></script>

     <script src='js/webxr-button.js'></script>
   </head>
   <body>
     <header>
       <details open>
         <summary>Input Selection</summary>
         <p>
           This sample demonstrates handling 'select' events generated by
           XRInputSources to create clickable objects in the scene.
           <a class="back" href="./">Back</a>
         </p>
       </details>
     </header>
     <script>
       (function () {
       'use strict';

       // If requested, initialize the WebXR polyfill
       if (QueryArgs.getBool('allowPolyfill', false)) {
         var polyfill = new WebXRPolyfill();
       }
       // Apply the version shim after the polyfill is instantiated, to ensure
       // that the polyfill also gets patched if necessary.
       var versionShim = new WebXRVersionShim();

       // Temporary
       let hideStats = QueryArgs.getBool('hideStats', false);

       // XR globals.
       let xrButton = null;
       let xrImmersiveFrameOfRef = null;
       let xrNonImmersiveFrameOfRef = null;

       // WebGL scene globals.
       let gl = null;
       let renderer = null;
       let scene = new Scene();
       if (hideStats) {
         scene.enableStats(false);
       }
       scene.addNode(new Gltf2Node({url: 'media/gltf/cube-room/cube-room.gltf'}));
       scene.standingStats(true);

       let boxes = [];

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

         if (navigator.xr) {
           navigator.xr.requestDevice().then((device) => {
             device.supportsSession({immersive: true}).then(() => {
               xrButton.setDevice(device);
             });

             let outputCanvas = document.createElement('canvas');
             let ctx = outputCanvas.getContext('xrpresent');

             device.requestSession({ outputContext: ctx })
                 .then((session) => {
                   document.body.appendChild(outputCanvas);
                   onSessionStarted(session);
                 });
           }).catch(() => {
             initFallback();
           });
         } else {
           initFallback();
         }
       }

       function initFallback() {
         initGL();
         document.body.appendChild(gl.canvas);
         let fallbackHelper = new FallbackHelper(scene, gl);
         fallbackHelper.emulateStage = true;
       }

       function initGL(compatibleDevice) {
         if (gl)
           return;

         gl = createWebGLContext({
           compatibleXRDevice: compatibleDevice
         });

         renderer = new Renderer(gl);

         scene.setRenderer(renderer);
         scene.inputRenderer.setControllerMesh(new Gltf2Node({url: 'media/gltf/controller/controller.gltf'}));

         // Create several boxes to use for hit testing.
         let boxBuilder = new BoxBuilder();
         boxBuilder.pushCube([0, 0, 0], 0.4);
         let boxPrimitive = boxBuilder.finishPrimitive(renderer);

         function addBox(x, y, z, r, g, b) {
           let boxMaterial = new PbrMaterial();
           boxMaterial.baseColorFactor.value = [r, g, b, 1.0];
           let boxRenderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);
           let boxNode = new Node();
           boxNode.addRenderPrimitive(boxRenderPrimitive);
           // Marks the node as one that needs to be checked when hit testing.
           boxNode.selectable = true;
           boxes.push({
             node: boxNode,
             renderPrimitive: boxRenderPrimitive,
             position: [x, y, z]
           });
           scene.addNode(boxNode);
         }

         addBox(-1.0, 1.6, -1.3, 1.0, 0.0, 0.0);
         addBox(0.0, 1.7, -1.5, 0.0, 1.0, 0.0);
         addBox(1.0, 1.6, -1.3, 0.0, 0.0, 1.0);
       }

       function onRequestSession(device) {
         // Set up a mirror canvas
         let mirrorCanvas = document.createElement('canvas');
         let ctx = mirrorCanvas.getContext('xrpresent');
         mirrorCanvas.setAttribute('id', 'mirror-canvas');
         document.body.appendChild(mirrorCanvas);

         device.requestSession({ immersive: true, outputContext: ctx }).then((session) => {
           xrButton.setSession(session);
           onSessionStarted(session);
         });
       }

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

         // By listening for the 'select' event we can find out when the user has
         // performed some sort of primary input action and respond to it.
         session.addEventListener('select', onSelect);

         initGL(session.device);

         session.baseLayer = new XRWebGLLayer(session, gl);

         session.requestFrameOfReference('stage').then((frameOfRef) => {
           if (session.immersive) {
             xrImmersiveFrameOfRef = frameOfRef;
           } else {
             xrNonImmersiveFrameOfRef = frameOfRef;
           }

           session.requestAnimationFrame(onXRFrame);
         });
       }

       function onSelect(ev) {
         let frameOfRef = ev.frame.session.immersive ?
                          xrImmersiveFrameOfRef :
                          xrNonImmersiveFrameOfRef;

         let inputPose = ev.frame.getInputPose(ev.inputSource, frameOfRef);
         if (!inputPose) {
           return;
         }

         if (inputPose.targetRay) {
           let hitResult = scene.hitTest(inputPose.targetRay)
           if (hitResult) {
             // Check to see if the hit result was one of our boxes.
             for (let box of boxes) {
               if (hitResult.node == box.node) {
                 // Change the box color to something random.
                 let uniforms = box.renderPrimitive.uniforms;
                 uniforms.baseColorFactor.value = [Math.random(), Math.random(), Math.random(), 1.0];
               }
             }
           }
         }
       }

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

       function onSessionEnded(event) {
         if (event.session.immersive) {
           document.body.removeChild(document.querySelector('#mirror-canvas'));
           xrButton.setSession(null);
         }
       }

       function onXRFrame(time, frame) {
         let session = frame.session;
         let frameOfRef = session.immersive ?
                          xrImmersiveFrameOfRef :
                          xrNonImmersiveFrameOfRef;
         let pose = frame.getDevicePose(frameOfRef);

         scene.startFrame();

         session.requestAnimationFrame(onXRFrame);

         // Update the matrix for each box
         for (let box of boxes) {
           let node = box.node;
           mat4.identity(node.matrix);
           mat4.translate(node.matrix, node.matrix, box.position);
           mat4.rotateX(node.matrix, node.matrix, time/1000);
           mat4.rotateY(node.matrix, node.matrix, time/1500);
         }

         // In this sample and most samples after it we'll use a helper function
         // to automatically add the right meshes for the session's input sources
         // each frame. This also does simple hit detection to position the
         // cursors correctly on the surface of selectable nodes.
         scene.updateInputSources(frame, frameOfRef);

         scene.drawXRFrame(frame, pose);

         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'>

	<!-- Origin Trial Token, feature = WebXR Device API, origin = https://immersive-web.github.io, expires = 2018-08-28 -->
	<meta http-equiv="origin-trial" data-feature="WebXR Device API" data-expires="2018-08-28" content="AnNpu7ceXvLew05ccD8Zr1OZsdZiB2hLQKK82kTTMDwF7oRKtP3QEJ4RzkeHrmB8Sq0vSV6ZNmszpBCZ0I8p9gAAAABceyJvcmlnaW4iOiJodHRwczovL2ltbWVyc2l2ZS13ZWIuZ2l0aHViLmlvOjQ0MyIsImZlYXR1cmUiOiJXZWJYUkRldmljZSIsImV4cGlyeSI6MTUzNTQxNDQwMH0=">

	<title>Input Selection</title>

	<link href='css/common.css' rel='stylesheet'></link>

	<!--The polyfill is not needed for browser that have native API support,
	but is linked by these samples for wider compatibility.-->
	<!--script src='https://cdn.jsdelivr.net/npm/webxr-polyfill@latest/build/webxr-polyfill.js'></script-->
	<script src='js/webxr-polyfill.js'></script>

	<!--This script patches up around implementation differences in past browser versions
	so that the samples can always be written against the most recent spec changes.
	It won't be necessary after the API has been officially shipped for a bit.-->
	<script src='js/webxr-version-shim.js'></script>

	<script src='js/cottontail/build/cottontail.js'></script>

	<script src='js/webxr-button.js'></script>
	</head>
	<body>
	<header>
	<details open>
	<summary>Input Selection</summary>
	<p>
	This sample demonstrates handling 'select' events generated by
	XRInputSources to create clickable objects in the scene.
	<a class="back" href="./">Back</a>
	</p>
	</details>
	</header>
	<script>
	(function () {
	'use strict';

	// If requested, initialize the WebXR polyfill
	if (QueryArgs.getBool('allowPolyfill', false)) {
	var polyfill = new WebXRPolyfill();
	}
	// Apply the version shim after the polyfill is instantiated, to ensure
	// that the polyfill also gets patched if necessary.
	var versionShim = new WebXRVersionShim();

	// Temporary
	let hideStats = QueryArgs.getBool('hideStats', false);

	// XR globals.
	let xrButton = null;
	let xrImmersiveFrameOfRef = null;
	let xrNonImmersiveFrameOfRef = null;

	// WebGL scene globals.
	let gl = null;
	let renderer = null;
	let scene = new Scene();
	if (hideStats) {
	scene.enableStats(false);
	}
	scene.addNode(new Gltf2Node({url: 'media/gltf/cube-room/cube-room.gltf'}));
	scene.standingStats(true);

	let boxes = [];

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

	if (navigator.xr) {
	navigator.xr.requestDevice().then((device) => {
	device.supportsSession({immersive: true}).then(() => {
	xrButton.setDevice(device);
	});

	let outputCanvas = document.createElement('canvas');
	let ctx = outputCanvas.getContext('xrpresent');

	device.requestSession({ outputContext: ctx })
	.then((session) => {
	document.body.appendChild(outputCanvas);
	onSessionStarted(session);
	});
	}).catch(() => {
	initFallback();
	});
	} else {
	initFallback();
	}
	}

	function initFallback() {
	initGL();
	document.body.appendChild(gl.canvas);
	let fallbackHelper = new FallbackHelper(scene, gl);
	fallbackHelper.emulateStage = true;
	}

	function initGL(compatibleDevice) {
	if (gl)
	return;

	gl = createWebGLContext({
	compatibleXRDevice: compatibleDevice
	});

	renderer = new Renderer(gl);

	scene.setRenderer(renderer);
	scene.inputRenderer.setControllerMesh(new Gltf2Node({url: 'media/gltf/controller/controller.gltf'}));

	// Create several boxes to use for hit testing.
	let boxBuilder = new BoxBuilder();
	boxBuilder.pushCube([0, 0, 0], 0.4);
	let boxPrimitive = boxBuilder.finishPrimitive(renderer);

	function addBox(x, y, z, r, g, b) {
	let boxMaterial = new PbrMaterial();
	boxMaterial.baseColorFactor.value = [r, g, b, 1.0];
	let boxRenderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);
	let boxNode = new Node();
	boxNode.addRenderPrimitive(boxRenderPrimitive);
	// Marks the node as one that needs to be checked when hit testing.
	boxNode.selectable = true;
	boxes.push({
	node: boxNode,
	renderPrimitive: boxRenderPrimitive,
	position: [x, y, z]
	});
	scene.addNode(boxNode);
	}

	addBox(-1.0, 1.6, -1.3, 1.0, 0.0, 0.0);
	addBox(0.0, 1.7, -1.5, 0.0, 1.0, 0.0);
	addBox(1.0, 1.6, -1.3, 0.0, 0.0, 1.0);
	}

	function onRequestSession(device) {
	// Set up a mirror canvas
	let mirrorCanvas = document.createElement('canvas');
	let ctx = mirrorCanvas.getContext('xrpresent');
	mirrorCanvas.setAttribute('id', 'mirror-canvas');
	document.body.appendChild(mirrorCanvas);

	device.requestSession({ immersive: true, outputContext: ctx }).then((session) => {
	xrButton.setSession(session);
	onSessionStarted(session);
	});
	}

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

	// By listening for the 'select' event we can find out when the user has
	// performed some sort of primary input action and respond to it.
	session.addEventListener('select', onSelect);

	initGL(session.device);

	session.baseLayer = new XRWebGLLayer(session, gl);

	session.requestFrameOfReference('stage').then((frameOfRef) => {
	if (session.immersive) {
	xrImmersiveFrameOfRef = frameOfRef;
	} else {
	xrNonImmersiveFrameOfRef = frameOfRef;
	}

	session.requestAnimationFrame(onXRFrame);
	});
	}

	function onSelect(ev) {
	let frameOfRef = ev.frame.session.immersive ?
	xrImmersiveFrameOfRef :
	xrNonImmersiveFrameOfRef;

	let inputPose = ev.frame.getInputPose(ev.inputSource, frameOfRef);
	if (!inputPose) {
	return;
	}

	if (inputPose.targetRay) {
	let hitResult = scene.hitTest(inputPose.targetRay)
	if (hitResult) {
	// Check to see if the hit result was one of our boxes.
	for (let box of boxes) {
	if (hitResult.node == box.node) {
	// Change the box color to something random.
	let uniforms = box.renderPrimitive.uniforms;
	uniforms.baseColorFactor.value = [Math.random(), Math.random(), Math.random(), 1.0];
	}
	}
	}
	}
	}

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

	function onSessionEnded(event) {
	if (event.session.immersive) {
	document.body.removeChild(document.querySelector('#mirror-canvas'));
	xrButton.setSession(null);
	}
	}

	function onXRFrame(time, frame) {
	let session = frame.session;
	let frameOfRef = session.immersive ?
	xrImmersiveFrameOfRef :
	xrNonImmersiveFrameOfRef;
	let pose = frame.getDevicePose(frameOfRef);

	scene.startFrame();

	session.requestAnimationFrame(onXRFrame);

	// Update the matrix for each box
	for (let box of boxes) {
	let node = box.node;
	mat4.identity(node.matrix);
	mat4.translate(node.matrix, node.matrix, box.position);
	mat4.rotateX(node.matrix, node.matrix, time/1000);
	mat4.rotateY(node.matrix, node.matrix, time/1500);
	}

	// In this sample and most samples after it we'll use a helper function
	// to automatically add the right meshes for the session's input sources
	// each frame. This also does simple hit detection to position the
	// cursors correctly on the surface of selectable nodes.
	scene.updateInputSources(frame, frameOfRef);

	scene.drawXRFrame(frame, pose);

	scene.endFrame();
	}

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