third_party/webxr_test_pages/webxr-samples/gamepad.html - chromium/src - 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>Gamepad</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/xrray-polyfill.js' type='module'></script>
     <script src='js/webxr-polyfill.js'></script>

     <script src='js/webxr-button.js'></script>
   </head>
   <body>
     <header>
       <details open>
         <summary>Gamepad</summary>
         <p>
           This sample demonstrates using XRInputSource Gamepad button presses
           to change box color and joystick/touchpad input to move boxes in 2
           dimensions.
           <a class="back" href="./index.html">Back</a>
         </p>
       </details>
     </header>
     <div id="gamepad-details">
       <!-- Tables updated in real-time data from WebXR gamepads will be
            displayed here if requested. -->
     </div>
     <script type="module">
       import {Scene} from './js/cottontail/src/scenes/scene.js';
       import {Renderer, createWebGLContext} from './js/cottontail/src/core/renderer.js';
       import {Gltf2Node} from './js/cottontail/src/nodes/gltf2.js';
       import {QueryArgs} from './js/cottontail/src/util/query-args.js';
       import {FallbackHelper} from './js/cottontail/src/util/fallback-helper.js';
       import {Node} from './js/cottontail/src/core/node.js';
       import {PbrMaterial} from './js/cottontail/src/materials/pbr.js';
       import {BoxBuilder} from './js/cottontail/src/geometry/box-builder.js';
       import {mat4, vec3, quat} from './js/cottontail/src/math/gl-matrix.js';
       import {GamepadTableManager} from './js/gamepad-data-tables.js';

       // If requested, initialize the WebXR polyfill
       if (QueryArgs.getBool('allowPolyfill', false)) {
         var polyfill = new WebXRPolyfill();
       }

       // If requested, don't display the frame rate info.
       let hideStats = QueryArgs.getBool('hideStats', false);

       // Display HTML tables updated in real-time with gamepad data. Useful for
       // testing + debugging.
       let displayTables = QueryArgs.getBool('displayTables', false);
       let tableManager = null;
       if (displayTables) {
         tableManager = new GamepadTableManager();
       }

       // XR globals.
       let xrButton = null;
       let xrRefSpace = 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 floorSize = 10;
       let floorPosition = [0, -floorSize / 2 + 0.01, 0];
       let floorNode = null;

       let boxTable = {};

       class GamepadBox {
         constructor(position) {
           this.position = position;
           let boxBuilder = new BoxBuilder();
           boxBuilder.pushCube([0, 0, 0], 0.4);
           let boxPrimitive = boxBuilder.finishPrimitive(renderer);
           let boxMaterial = new PbrMaterial();
           boxMaterial.baseColorFactor.value = [1, 0, 0, 1]; // red
           this.renderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);

           this.node = new Node();
           this.node.addRenderPrimitive(this.renderPrimitive);
           scene.addNode(this.node);

           this.color_state = true;
           this.is_button_pressed = false;
         }

         toggle_color() {
           this.renderPrimitive.uniforms.baseColorFactor.value = this.color_state ?
               [0, 1, 0, 1] : // green
               [1, 0, 0, 1];  // red
           this.color_state = !this.color_state;
         }

         move(dx, dy) {
           const inv_speed = 100;
           let translation = [dx / inv_speed, dy / inv_speed, 0];
           vec3.add(this.position, this.position, translation);
         }

         // Returns true iff button which was previously pressed is not pressed
         // anymore. The WebXR + Gamepad APIs don't support button press events
         // which is why keeping track of the state this way is necessary.
         update_button_state(is_button_pressed) {
           let did_button_fire = this.is_button_pressed && !is_button_pressed;
           this.is_button_pressed = is_button_pressed;
           return did_button_fire;
         }
       }

       class GamepadBoxSet {
         constructor(button_count, y) {
           // Place the boxes in a horizontal line 2 meters in front of the user.
           this.boxes = [];
           let x_shift = button_count / 2;
           for (let x = 1; x <= button_count; ++x) {
             this.boxes.push(new GamepadBox([x - x_shift, y, -2]));
           }
         }

         update_state(gamepad) {
           // A button press (pressing and then releasing a button) will change
           // the associated box's color from red to green (or from green to red
           // if it's currently green).
           for (let i = 0; i < gamepad.buttons.length; ++i) {
             if (this.boxes[i].update_button_state(gamepad.buttons[i].pressed)) {
               this.boxes[i].toggle_color();
             }
           }

           if (gamepad.mapping == "xr-standard") {
             // Invert the y axis because gamepads follow the convention that -1
             // is up/forwards, but we want to have a forward joystick/touchpad
             // input result in forward motion for the box.

             // xr-standard Gamepads always have at least one touchpad/joystick.
             // Its button will always be in the second slot.
             let dx = gamepad.axes[0];
             let dy = -gamepad.axes[1];
             this.boxes[1].move(dx, dy);

             if (gamepad.axes.length >= 4 && gamepad.buttons.length >= 4) {
               // If an xr-standard Gamepad has a secondary touchpad/joystick, its
               // button will be in the 4th slot and it will use the second pair
               // of input axes.
               dx = gamepad.axes[2];
               dy = -gamepad.axes[3];
               this.boxes[3].move(dx, dy);
             }
           }
         }

         update() {
           // Update the matrix for each box so that they are rendered in the
           // correct positions.
           for (let box of this.boxes) {
             mat4.identity(box.node.matrix);
             mat4.translate(box.node.matrix, box.node.matrix, box.position);
           }
         }
       }

       function ProcessGamepad(gamepad, hand) {
         if (displayTables) {
           tableManager.update(gamepad, hand);
         }

         if (!(hand in boxTable)) {
           const y_positions = {
             "left" : 1,
             "right" : 2,
             "none" : 3,
           };
           boxTable[hand] = new GamepadBoxSet(gamepad.buttons.length, y_positions[hand]);
         }

         boxTable[hand].update_state(gamepad);
       }

       function initXR() {
         xrButton = new XRDeviceButton({
           onRequestSession: onRequestSession,
           onEndSession: (session) => session.end(),
           supportedSessionTypes: ['immersive-vr']
         });
         document.querySelector('header').appendChild(xrButton.domElement);
       }

       function initGL() {
         if (gl)
           return;

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

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

         renderer = new Renderer(gl);

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

         addFloorBox();
       }

       function addFloorBox() {
         let boxBuilder = new BoxBuilder();
         boxBuilder.pushCube([0, 0, 0], floorSize);
         let boxPrimitive = boxBuilder.finishPrimitive(renderer);

         let boxMaterial = new PbrMaterial();
         boxMaterial.baseColorFactor.value = [0.3, 0.3, 0.3, 1.0];
         let boxRenderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);

         floorNode = new Node();
         floorNode.addRenderPrimitive(boxRenderPrimitive);
         floorNode.selectable = true;
         scene.addNode(floorNode);
         mat4.identity(floorNode.matrix);
         mat4.translate(floorNode.matrix, floorNode.matrix, floorPosition);
       }

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

       function onSessionStarted(session) {
         session.addEventListener('end', () => xrButton.setSession(null));

         initGL();

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

         session.requestReferenceSpace('local-floor').then((refSpace) => {
           // Save the session-specific reference space.
           xrRefSpace = refSpace;
           session.requestAnimationFrame(onXRFrame);
         });
       }

       function onXRFrame(time, frame) {
         let session = frame.session;
         let pose = frame.getViewerPose(xrRefSpace);
         scene.startFrame();
         session.requestAnimationFrame(onXRFrame);

         for (let source of session.inputSources) {
           if (source.gamepad) {
             ProcessGamepad(source.gamepad, source.handedness);
           }
         }

         if (displayTables) {
           tableManager.nextFrame();
         }

         for (let hand in boxTable) {
           boxTable[hand].update();
         }

         scene.updateInputSources(frame, xrRefSpace);
         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>Gamepad</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/xrray-polyfill.js' type='module'></script>
	<script src='js/webxr-polyfill.js'></script>

	<script src='js/webxr-button.js'></script>
	</head>
	<body>
	<header>
	<details open>
	<summary>Gamepad</summary>
	<p>
	This sample demonstrates using XRInputSource Gamepad button presses
	to change box color and joystick/touchpad input to move boxes in 2
	dimensions.
	<a class="back" href="./index.html">Back</a>
	</p>
	</details>
	</header>
	<div id="gamepad-details">
	<!-- Tables updated in real-time data from WebXR gamepads will be
	displayed here if requested. -->
	</div>
	<script type="module">
	import {Scene} from './js/cottontail/src/scenes/scene.js';
	import {Renderer, createWebGLContext} from './js/cottontail/src/core/renderer.js';
	import {Gltf2Node} from './js/cottontail/src/nodes/gltf2.js';
	import {QueryArgs} from './js/cottontail/src/util/query-args.js';
	import {FallbackHelper} from './js/cottontail/src/util/fallback-helper.js';
	import {Node} from './js/cottontail/src/core/node.js';
	import {PbrMaterial} from './js/cottontail/src/materials/pbr.js';
	import {BoxBuilder} from './js/cottontail/src/geometry/box-builder.js';
	import {mat4, vec3, quat} from './js/cottontail/src/math/gl-matrix.js';
	import {GamepadTableManager} from './js/gamepad-data-tables.js';

	// If requested, initialize the WebXR polyfill
	if (QueryArgs.getBool('allowPolyfill', false)) {
	var polyfill = new WebXRPolyfill();
	}

	// If requested, don't display the frame rate info.
	let hideStats = QueryArgs.getBool('hideStats', false);

	// Display HTML tables updated in real-time with gamepad data. Useful for
	// testing + debugging.
	let displayTables = QueryArgs.getBool('displayTables', false);
	let tableManager = null;
	if (displayTables) {
	tableManager = new GamepadTableManager();
	}

	// XR globals.
	let xrButton = null;
	let xrRefSpace = 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 floorSize = 10;
	let floorPosition = [0, -floorSize / 2 + 0.01, 0];
	let floorNode = null;

	let boxTable = {};

	class GamepadBox {
	constructor(position) {
	this.position = position;
	let boxBuilder = new BoxBuilder();
	boxBuilder.pushCube([0, 0, 0], 0.4);
	let boxPrimitive = boxBuilder.finishPrimitive(renderer);
	let boxMaterial = new PbrMaterial();
	boxMaterial.baseColorFactor.value = [1, 0, 0, 1]; // red
	this.renderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);

	this.node = new Node();
	this.node.addRenderPrimitive(this.renderPrimitive);
	scene.addNode(this.node);

	this.color_state = true;
	this.is_button_pressed = false;
	}

	toggle_color() {
	this.renderPrimitive.uniforms.baseColorFactor.value = this.color_state ?
	[0, 1, 0, 1] : // green
	[1, 0, 0, 1]; // red
	this.color_state = !this.color_state;
	}

	move(dx, dy) {
	const inv_speed = 100;
	let translation = [dx / inv_speed, dy / inv_speed, 0];
	vec3.add(this.position, this.position, translation);
	}

	// Returns true iff button which was previously pressed is not pressed
	// anymore. The WebXR + Gamepad APIs don't support button press events
	// which is why keeping track of the state this way is necessary.
	update_button_state(is_button_pressed) {
	let did_button_fire = this.is_button_pressed && !is_button_pressed;
	this.is_button_pressed = is_button_pressed;
	return did_button_fire;
	}
	}

	class GamepadBoxSet {
	constructor(button_count, y) {
	// Place the boxes in a horizontal line 2 meters in front of the user.
	this.boxes = [];
	let x_shift = button_count / 2;
	for (let x = 1; x <= button_count; ++x) {
	this.boxes.push(new GamepadBox([x - x_shift, y, -2]));
	}
	}

	update_state(gamepad) {
	// A button press (pressing and then releasing a button) will change
	// the associated box's color from red to green (or from green to red
	// if it's currently green).
	for (let i = 0; i < gamepad.buttons.length; ++i) {
	if (this.boxes[i].update_button_state(gamepad.buttons[i].pressed)) {
	this.boxes[i].toggle_color();
	}
	}

	if (gamepad.mapping == "xr-standard") {
	// Invert the y axis because gamepads follow the convention that -1
	// is up/forwards, but we want to have a forward joystick/touchpad
	// input result in forward motion for the box.

	// xr-standard Gamepads always have at least one touchpad/joystick.
	// Its button will always be in the second slot.
	let dx = gamepad.axes[0];
	let dy = -gamepad.axes[1];
	this.boxes[1].move(dx, dy);

	if (gamepad.axes.length >= 4 && gamepad.buttons.length >= 4) {
	// If an xr-standard Gamepad has a secondary touchpad/joystick, its
	// button will be in the 4th slot and it will use the second pair
	// of input axes.
	dx = gamepad.axes[2];
	dy = -gamepad.axes[3];
	this.boxes[3].move(dx, dy);
	}
	}
	}

	update() {
	// Update the matrix for each box so that they are rendered in the
	// correct positions.
	for (let box of this.boxes) {
	mat4.identity(box.node.matrix);
	mat4.translate(box.node.matrix, box.node.matrix, box.position);
	}
	}
	}

	function ProcessGamepad(gamepad, hand) {
	if (displayTables) {
	tableManager.update(gamepad, hand);
	}

	if (!(hand in boxTable)) {
	const y_positions = {
	"left" : 1,
	"right" : 2,
	"none" : 3,
	};
	boxTable[hand] = new GamepadBoxSet(gamepad.buttons.length, y_positions[hand]);
	}

	boxTable[hand].update_state(gamepad);
	}

	function initXR() {
	xrButton = new XRDeviceButton({
	onRequestSession: onRequestSession,
	onEndSession: (session) => session.end(),
	supportedSessionTypes: ['immersive-vr']
	});
	document.querySelector('header').appendChild(xrButton.domElement);
	}

	function initGL() {
	if (gl)
	return;

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

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

	renderer = new Renderer(gl);

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

	addFloorBox();
	}

	function addFloorBox() {
	let boxBuilder = new BoxBuilder();
	boxBuilder.pushCube([0, 0, 0], floorSize);
	let boxPrimitive = boxBuilder.finishPrimitive(renderer);

	let boxMaterial = new PbrMaterial();
	boxMaterial.baseColorFactor.value = [0.3, 0.3, 0.3, 1.0];
	let boxRenderPrimitive = renderer.createRenderPrimitive(boxPrimitive, boxMaterial);

	floorNode = new Node();
	floorNode.addRenderPrimitive(boxRenderPrimitive);
	floorNode.selectable = true;
	scene.addNode(floorNode);
	mat4.identity(floorNode.matrix);
	mat4.translate(floorNode.matrix, floorNode.matrix, floorPosition);
	}

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

	function onSessionStarted(session) {
	session.addEventListener('end', () => xrButton.setSession(null));

	initGL();

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

	session.requestReferenceSpace('local-floor').then((refSpace) => {
	// Save the session-specific reference space.
	xrRefSpace = refSpace;
	session.requestAnimationFrame(onXRFrame);
	});
	}

	function onXRFrame(time, frame) {
	let session = frame.session;
	let pose = frame.getViewerPose(xrRefSpace);
	scene.startFrame();
	session.requestAnimationFrame(onXRFrame);

	for (let source of session.inputSources) {
	if (source.gamepad) {
	ProcessGamepad(source.gamepad, source.handedness);
	}
	}

	if (displayTables) {
	tableManager.nextFrame();
	}

	for (let hand in boxTable) {
	boxTable[hand].update();
	}

	scene.updateInputSources(frame, xrRefSpace);
	scene.drawXRFrame(frame, pose);
	scene.endFrame();
	}

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