webvr-polyfill.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.WebVRPolyfill = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
'use strict';

var has = Object.prototype.hasOwnProperty
  , prefix = '~';

/**
 * Constructor to create a storage for our `EE` objects.
 * An `Events` instance is a plain object whose properties are event names.
 *
 * @constructor
 * @api private
 */
function Events() {}

//
// We try to not inherit from `Object.prototype`. In some engines creating an
// instance in this way is faster than calling `Object.create(null)` directly.
// If `Object.create(null)` is not supported we prefix the event names with a
// character to make sure that the built-in object properties are not
// overridden or used as an attack vector.
//
if (Object.create) {
  Events.prototype = Object.create(null);

  //
  // This hack is needed because the `__proto__` property is still inherited in
  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
  //
  if (!new Events().__proto__) prefix = false;
}

/**
 * Representation of a single event listener.
 *
 * @param {Function} fn The listener function.
 * @param {Mixed} context The context to invoke the listener with.
 * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
 * @constructor
 * @api private
 */
function EE(fn, context, once) {
  this.fn = fn;
  this.context = context;
  this.once = once || false;
}

/**
 * Minimal `EventEmitter` interface that is molded against the Node.js
 * `EventEmitter` interface.
 *
 * @constructor
 * @api public
 */
function EventEmitter() {
  this._events = new Events();
  this._eventsCount = 0;
}

/**
 * Return an array listing the events for which the emitter has registered
 * listeners.
 *
 * @returns {Array}
 * @api public
 */
EventEmitter.prototype.eventNames = function eventNames() {
  var names = []
    , events
    , name;

  if (this._eventsCount === 0) return names;

  for (name in (events = this._events)) {
    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
  }

  if (Object.getOwnPropertySymbols) {
    return names.concat(Object.getOwnPropertySymbols(events));
  }

  return names;
};

/**
 * Return the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Boolean} exists Only check if there are listeners.
 * @returns {Array|Boolean}
 * @api public
 */
EventEmitter.prototype.listeners = function listeners(event, exists) {
  var evt = prefix ? prefix + event : event
    , available = this._events[evt];

  if (exists) return !!available;
  if (!available) return [];
  if (available.fn) return [available.fn];

  for (var i = 0, l = available.length, ee = new Array(l); i < l; i++) {
    ee[i] = available[i].fn;
  }

  return ee;
};

/**
 * Calls each of the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @returns {Boolean} `true` if the event had listeners, else `false`.
 * @api public
 */
EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return false;

  var listeners = this._events[evt]
    , len = arguments.length
    , args
    , i;

  if (listeners.fn) {
    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);

    switch (len) {
      case 1: return listeners.fn.call(listeners.context), true;
      case 2: return listeners.fn.call(listeners.context, a1), true;
      case 3: return listeners.fn.call(listeners.context, a1, a2), true;
      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
    }

    for (i = 1, args = new Array(len -1); i < len; i++) {
      args[i - 1] = arguments[i];
    }

    listeners.fn.apply(listeners.context, args);
  } else {
    var length = listeners.length
      , j;

    for (i = 0; i < length; i++) {
      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);

      switch (len) {
        case 1: listeners[i].fn.call(listeners[i].context); break;
        case 2: listeners[i].fn.call(listeners[i].context, a1); break;
        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
        default:
          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
            args[j - 1] = arguments[j];
          }

          listeners[i].fn.apply(listeners[i].context, args);
      }
    }
  }

  return true;
};

/**
 * Add a listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.on = function on(event, fn, context) {
  var listener = new EE(fn, context || this)
    , evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;
  else if (!this._events[evt].fn) this._events[evt].push(listener);
  else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Add a one-time listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.once = function once(event, fn, context) {
  var listener = new EE(fn, context || this, true)
    , evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;
  else if (!this._events[evt].fn) this._events[evt].push(listener);
  else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Remove the listeners of a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn Only remove the listeners that match this function.
 * @param {Mixed} context Only remove the listeners that have this context.
 * @param {Boolean} once Only remove one-time listeners.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return this;
  if (!fn) {
    if (--this._eventsCount === 0) this._events = new Events();
    else delete this._events[evt];
    return this;
  }

  var listeners = this._events[evt];

  if (listeners.fn) {
    if (
         listeners.fn === fn
      && (!once || listeners.once)
      && (!context || listeners.context === context)
    ) {
      if (--this._eventsCount === 0) this._events = new Events();
      else delete this._events[evt];
    }
  } else {
    for (var i = 0, events = [], length = listeners.length; i < length; i++) {
      if (
           listeners[i].fn !== fn
        || (once && !listeners[i].once)
        || (context && listeners[i].context !== context)
      ) {
        events.push(listeners[i]);
      }
    }

    //
    // Reset the array, or remove it completely if we have no more listeners.
    //
    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
    else if (--this._eventsCount === 0) this._events = new Events();
    else delete this._events[evt];
  }

  return this;
};

/**
 * Remove all listeners, or those of the specified event.
 *
 * @param {String|Symbol} [event] The event name.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
  var evt;

  if (event) {
    evt = prefix ? prefix + event : event;
    if (this._events[evt]) {
      if (--this._eventsCount === 0) this._events = new Events();
      else delete this._events[evt];
    }
  } else {
    this._events = new Events();
    this._eventsCount = 0;
  }

  return this;
};

//
// Alias methods names because people roll like that.
//
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.addListener = EventEmitter.prototype.on;

//
// This function doesn't apply anymore.
//
EventEmitter.prototype.setMaxListeners = function setMaxListeners() {
  return this;
};

//
// Expose the prefix.
//
EventEmitter.prefixed = prefix;

//
// Allow `EventEmitter` to be imported as module namespace.
//
EventEmitter.EventEmitter = EventEmitter;

//
// Expose the module.
//
if ('undefined' !== typeof module) {
  module.exports = EventEmitter;
}

},{}],2:[function(_dereq_,module,exports){
'use strict';
/* eslint-disable no-unused-vars */
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (e) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (Object.getOwnPropertySymbols) {
			symbols = Object.getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

},{}],3:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Util = _dereq_('./util.js');
var WakeLock = _dereq_('./wakelock.js');

// Start at a higher number to reduce chance of conflict.
var nextDisplayId = 1000;
var hasShowDeprecationWarning = false;

var defaultLeftBounds = [0, 0, 0.5, 1];
var defaultRightBounds = [0.5, 0, 0.5, 1];

/**
 * The base class for all VR frame data.
 */

function VRFrameData() {
  this.leftProjectionMatrix = new Float32Array(16);
  this.leftViewMatrix = new Float32Array(16);
  this.rightProjectionMatrix = new Float32Array(16);
  this.rightViewMatrix = new Float32Array(16);
  this.pose = null;
};

/**
 * The base class for all VR displays.
 */
function VRDisplay() {
  this.isPolyfilled = true;
  this.displayId = nextDisplayId++;
  this.displayName = 'webvr-polyfill displayName';

  this.depthNear = 0.01;
  this.depthFar = 10000.0;

  this.isConnected = true;
  this.isPresenting = false;
  this.capabilities = {
    hasPosition: false,
    hasOrientation: false,
    hasExternalDisplay: false,
    canPresent: false,
    maxLayers: 1
  };
  this.stageParameters = null;

  // "Private" members.
  this.waitingForPresent_ = false;
  this.layer_ = null;

  this.fullscreenElement_ = null;
  this.fullscreenWrapper_ = null;
  this.fullscreenElementCachedStyle_ = null;

  this.fullscreenEventTarget_ = null;
  this.fullscreenChangeHandler_ = null;
  this.fullscreenErrorHandler_ = null;

  this.wakelock_ = new WakeLock();
}

VRDisplay.prototype.getFrameData = function(frameData) {
  // TODO: Technically this should retain it's value for the duration of a frame
  // but I doubt that's practical to do in javascript.
  return Util.frameDataFromPose(frameData, this.getPose(), this);
};

VRDisplay.prototype.getPose = function() {
  // TODO: Technically this should retain it's value for the duration of a frame
  // but I doubt that's practical to do in javascript.
  return this.getImmediatePose();
};

VRDisplay.prototype.requestAnimationFrame = function(callback) {
  return window.requestAnimationFrame(callback);
};

VRDisplay.prototype.cancelAnimationFrame = function(id) {
  return window.cancelAnimationFrame(id);
};

VRDisplay.prototype.wrapForFullscreen = function(element) {
  // Don't wrap in iOS.
  if (Util.isIOS()) {
    return element;
  }
  if (!this.fullscreenWrapper_) {
    this.fullscreenWrapper_ = document.createElement('div');
    var cssProperties = [
      'height: ' + Math.min(screen.height, screen.width) + 'px !important',
      'top: 0 !important',
      'left: 0 !important',
      'right: 0 !important',
      'border: 0',
      'margin: 0',
      'padding: 0',
      'z-index: 999999 !important',
      'position: fixed',
    ];
    this.fullscreenWrapper_.setAttribute('style', cssProperties.join('; ') + ';');
    this.fullscreenWrapper_.classList.add('webvr-polyfill-fullscreen-wrapper');
  }

  if (this.fullscreenElement_ == element) {
    return this.fullscreenWrapper_;
  }

  // Remove any previously applied wrappers
  this.removeFullscreenWrapper();

  this.fullscreenElement_ = element;
  var parent = this.fullscreenElement_.parentElement;
  parent.insertBefore(this.fullscreenWrapper_, this.fullscreenElement_);
  parent.removeChild(this.fullscreenElement_);
  this.fullscreenWrapper_.insertBefore(this.fullscreenElement_, this.fullscreenWrapper_.firstChild);
  this.fullscreenElementCachedStyle_ = this.fullscreenElement_.getAttribute('style');

  var self = this;
  function applyFullscreenElementStyle() {
    if (!self.fullscreenElement_) {
      return;
    }

    var cssProperties = [
      'position: absolute',
      'top: 0',
      'left: 0',
      'width: ' + Math.max(screen.width, screen.height) + 'px',
      'height: ' + Math.min(screen.height, screen.width) + 'px',
      'border: 0',
      'margin: 0',
      'padding: 0',
    ];
    self.fullscreenElement_.setAttribute('style', cssProperties.join('; ') + ';');
  }

  applyFullscreenElementStyle();

  return this.fullscreenWrapper_;
};

VRDisplay.prototype.removeFullscreenWrapper = function() {
  if (!this.fullscreenElement_) {
    return;
  }

  var element = this.fullscreenElement_;
  if (this.fullscreenElementCachedStyle_) {
    element.setAttribute('style', this.fullscreenElementCachedStyle_);
  } else {
    element.removeAttribute('style');
  }
  this.fullscreenElement_ = null;
  this.fullscreenElementCachedStyle_ = null;

  var parent = this.fullscreenWrapper_.parentElement;
  this.fullscreenWrapper_.removeChild(element);
  parent.insertBefore(element, this.fullscreenWrapper_);
  parent.removeChild(this.fullscreenWrapper_);

  return element;
};

VRDisplay.prototype.requestPresent = function(layers) {
  var wasPresenting = this.isPresenting;
  var self = this;

  if (!(layers instanceof Array)) {
    if (!hasShowDeprecationWarning) {
      console.warn("Using a deprecated form of requestPresent. Should pass in an array of VRLayers.");
      hasShowDeprecationWarning = true;
    }
    layers = [layers];
  }

  return new Promise(function(resolve, reject) {
    if (!self.capabilities.canPresent) {
      reject(new Error('VRDisplay is not capable of presenting.'));
      return;
    }

    if (layers.length == 0 || layers.length > self.capabilities.maxLayers) {
      reject(new Error('Invalid number of layers.'));
      return;
    }

    var incomingLayer = layers[0];
    if (!incomingLayer.source) {
      /*
      todo: figure out the correct behavior if the source is not provided.
      see https://github.com/w3c/webvr/issues/58
      */
      resolve();
      return;
    }

    var leftBounds = incomingLayer.leftBounds || defaultLeftBounds;
    var rightBounds = incomingLayer.rightBounds || defaultRightBounds;
    if (wasPresenting) {
      // Already presenting, just changing configuration
      var layer = self.layer_;
      if (layer.source !== incomingLayer.source) {
        layer.source = incomingLayer.source;
      }

      for (var i = 0; i < 4; i++) {
        if (layer.leftBounds[i] !== leftBounds[i]) {
          layer.leftBounds[i] = leftBounds[i];
        }
        if (layer.rightBounds[i] !== rightBounds[i]) {
          layer.rightBounds[i] = rightBounds[i];
        }
      }

      resolve();
      return;
    }

    // Was not already presenting.
    self.layer_ = {
      predistorted: incomingLayer.predistorted,
      source: incomingLayer.source,
      leftBounds: leftBounds.slice(0),
      rightBounds: rightBounds.slice(0)
    };

    self.waitingForPresent_ = false;
    if (self.layer_ && self.layer_.source) {
      var fullscreenElement = self.wrapForFullscreen(self.layer_.source);

      function onFullscreenChange() {
        var actualFullscreenElement = Util.getFullscreenElement();

        self.isPresenting = (fullscreenElement === actualFullscreenElement);
        if (self.isPresenting) {
          if (screen.orientation && screen.orientation.lock) {
            screen.orientation.lock('landscape-primary').catch(function(error){
                    console.error('screen.orientation.lock() failed due to', error.message)
            });
          }
          self.waitingForPresent_ = false;
          self.beginPresent_();
          resolve();
        } else {
          if (screen.orientation && screen.orientation.unlock) {
            screen.orientation.unlock();
          }
          self.removeFullscreenWrapper();
          self.wakelock_.release();
          self.endPresent_();
          self.removeFullscreenListeners_();
        }
        self.fireVRDisplayPresentChange_();
      }
      function onFullscreenError() {
        if (!self.waitingForPresent_) {
          return;
        }

        self.removeFullscreenWrapper();
        self.removeFullscreenListeners_();

        self.wakelock_.release();
        self.waitingForPresent_ = false;
        self.isPresenting = false;

        reject(new Error('Unable to present.'));
      }

      self.addFullscreenListeners_(fullscreenElement,
          onFullscreenChange, onFullscreenError);

      if (Util.requestFullscreen(fullscreenElement)) {
        self.wakelock_.request();
        self.waitingForPresent_ = true;
      } else if (Util.isIOS()) {
        // *sigh* Just fake it.
        self.wakelock_.request();
        self.isPresenting = true;
        self.beginPresent_();
        self.fireVRDisplayPresentChange_();
        resolve();
      }
    }

    if (!self.waitingForPresent_ && !Util.isIOS()) {
      Util.exitFullscreen();
      reject(new Error('Unable to present.'));
    }
  });
};

VRDisplay.prototype.exitPresent = function() {
  var wasPresenting = this.isPresenting;
  var self = this;
  this.isPresenting = false;
  this.layer_ = null;
  this.wakelock_.release();

  return new Promise(function(resolve, reject) {
    if (wasPresenting) {
      if (!Util.exitFullscreen() && Util.isIOS()) {
        self.endPresent_();
        self.fireVRDisplayPresentChange_();
      }

      resolve();
    } else {
      reject(new Error('Was not presenting to VRDisplay.'));
    }
  });
};

VRDisplay.prototype.getLayers = function() {
  if (this.layer_) {
    return [this.layer_];
  }
  return [];
};

VRDisplay.prototype.fireVRDisplayPresentChange_ = function() {
  var event = new CustomEvent('vrdisplaypresentchange', {detail: {display: this}});
  window.dispatchEvent(event);
};

VRDisplay.prototype.addFullscreenListeners_ = function(element, changeHandler, errorHandler) {
  this.removeFullscreenListeners_();

  this.fullscreenEventTarget_ = element;
  this.fullscreenChangeHandler_ = changeHandler;
  this.fullscreenErrorHandler_ = errorHandler;

  if (changeHandler) {
    if (document.fullscreenEnabled) {
      element.addEventListener('fullscreenchange', changeHandler, false);
    } else if (document.webkitFullscreenEnabled) {
      element.addEventListener('webkitfullscreenchange', changeHandler, false);
    } else if (document.mozFullScreenEnabled) {
      document.addEventListener('mozfullscreenchange', changeHandler, false);
    } else if (document.msFullscreenEnabled) {
      element.addEventListener('msfullscreenchange', changeHandler, false);
    }
  }

  if (errorHandler) {
    if (document.fullscreenEnabled) {
      element.addEventListener('fullscreenerror', errorHandler, false);
    } else if (document.webkitFullscreenEnabled) {
      element.addEventListener('webkitfullscreenerror', errorHandler, false);
    } else if (document.mozFullScreenEnabled) {
      document.addEventListener('mozfullscreenerror', errorHandler, false);
    } else if (document.msFullscreenEnabled) {
      element.addEventListener('msfullscreenerror', errorHandler, false);
    }
  }
};

VRDisplay.prototype.removeFullscreenListeners_ = function() {
  if (!this.fullscreenEventTarget_)
    return;

  var element = this.fullscreenEventTarget_;

  if (this.fullscreenChangeHandler_) {
    var changeHandler = this.fullscreenChangeHandler_;
    element.removeEventListener('fullscreenchange', changeHandler, false);
    element.removeEventListener('webkitfullscreenchange', changeHandler, false);
    document.removeEventListener('mozfullscreenchange', changeHandler, false);
    element.removeEventListener('msfullscreenchange', changeHandler, false);
  }

  if (this.fullscreenErrorHandler_) {
    var errorHandler = this.fullscreenErrorHandler_;
    element.removeEventListener('fullscreenerror', errorHandler, false);
    element.removeEventListener('webkitfullscreenerror', errorHandler, false);
    document.removeEventListener('mozfullscreenerror', errorHandler, false);
    element.removeEventListener('msfullscreenerror', errorHandler, false);
  }

  this.fullscreenEventTarget_ = null;
  this.fullscreenChangeHandler_ = null;
  this.fullscreenErrorHandler_ = null;
};

VRDisplay.prototype.beginPresent_ = function() {
  // Override to add custom behavior when presentation begins.
};

VRDisplay.prototype.endPresent_ = function() {
  // Override to add custom behavior when presentation ends.
};

VRDisplay.prototype.submitFrame = function(pose) {
  // Override to add custom behavior for frame submission.
};

VRDisplay.prototype.getEyeParameters = function(whichEye) {
  // Override to return accurate eye parameters if canPresent is true.
  return null;
};

/*
 * Deprecated classes
 */

/**
 * The base class for all VR devices. (Deprecated)
 */
function VRDevice() {
  this.isPolyfilled = true;
  this.hardwareUnitId = 'webvr-polyfill hardwareUnitId';
  this.deviceId = 'webvr-polyfill deviceId';
  this.deviceName = 'webvr-polyfill deviceName';
}

/**
 * The base class for all VR HMD devices. (Deprecated)
 */
function HMDVRDevice() {
}
HMDVRDevice.prototype = new VRDevice();

/**
 * The base class for all VR position sensor devices. (Deprecated)
 */
function PositionSensorVRDevice() {
}
PositionSensorVRDevice.prototype = new VRDevice();

module.exports.VRFrameData = VRFrameData;
module.exports.VRDisplay = VRDisplay;
module.exports.VRDevice = VRDevice;
module.exports.HMDVRDevice = HMDVRDevice;
module.exports.PositionSensorVRDevice = PositionSensorVRDevice;

},{"./util.js":22,"./wakelock.js":24}],4:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var CardboardUI = _dereq_('./cardboard-ui.js');
var Util = _dereq_('./util.js');
var WGLUPreserveGLState = _dereq_('./deps/wglu-preserve-state.js');

var distortionVS = [
  'attribute vec2 position;',
  'attribute vec3 texCoord;',

  'varying vec2 vTexCoord;',

  'uniform vec4 viewportOffsetScale[2];',

  'void main() {',
  '  vec4 viewport = viewportOffsetScale[int(texCoord.z)];',
  '  vTexCoord = (texCoord.xy * viewport.zw) + viewport.xy;',
  '  gl_Position = vec4( position, 1.0, 1.0 );',
  '}',
].join('\n');

var distortionFS = [
  'precision mediump float;',
  'uniform sampler2D diffuse;',

  'varying vec2 vTexCoord;',

  'void main() {',
  '  gl_FragColor = texture2D(diffuse, vTexCoord);',
  '}',
].join('\n');

/**
 * A mesh-based distorter.
 */
function CardboardDistorter(gl) {
  this.gl = gl;
  this.ctxAttribs = gl.getContextAttributes();

  this.meshWidth = 20;
  this.meshHeight = 20;

  this.bufferScale = WebVRConfig.BUFFER_SCALE;

  this.bufferWidth = gl.drawingBufferWidth;
  this.bufferHeight = gl.drawingBufferHeight;

  // Patching support
  this.realBindFramebuffer = gl.bindFramebuffer;
  this.realEnable = gl.enable;
  this.realDisable = gl.disable;
  this.realColorMask = gl.colorMask;
  this.realClearColor = gl.clearColor;
  this.realViewport = gl.viewport;

  if (!Util.isIOS()) {
    this.realCanvasWidth = Object.getOwnPropertyDescriptor(gl.canvas.__proto__, 'width');
    this.realCanvasHeight = Object.getOwnPropertyDescriptor(gl.canvas.__proto__, 'height');
  }

  this.isPatched = false;

  // State tracking
  this.lastBoundFramebuffer = null;
  this.cullFace = false;
  this.depthTest = false;
  this.blend = false;
  this.scissorTest = false;
  this.stencilTest = false;
  this.viewport = [0, 0, 0, 0];
  this.colorMask = [true, true, true, true];
  this.clearColor = [0, 0, 0, 0];

  this.attribs = {
    position: 0,
    texCoord: 1
  };
  this.program = Util.linkProgram(gl, distortionVS, distortionFS, this.attribs);
  this.uniforms = Util.getProgramUniforms(gl, this.program);

  this.viewportOffsetScale = new Float32Array(8);
  this.setTextureBounds();

  this.vertexBuffer = gl.createBuffer();
  this.indexBuffer = gl.createBuffer();
  this.indexCount = 0;

  this.renderTarget = gl.createTexture();
  this.framebuffer = gl.createFramebuffer();

  this.depthStencilBuffer = null;
  this.depthBuffer = null;
  this.stencilBuffer = null;

  if (this.ctxAttribs.depth && this.ctxAttribs.stencil) {
    this.depthStencilBuffer = gl.createRenderbuffer();
  } else if (this.ctxAttribs.depth) {
    this.depthBuffer = gl.createRenderbuffer();
  } else if (this.ctxAttribs.stencil) {
    this.stencilBuffer = gl.createRenderbuffer();
  }

  this.patch();

  this.onResize();

  if (!WebVRConfig.CARDBOARD_UI_DISABLED) {
    this.cardboardUI = new CardboardUI(gl);
  }
};

/**
 * Tears down all the resources created by the distorter and removes any
 * patches.
 */
CardboardDistorter.prototype.destroy = function() {
  var gl = this.gl;

  this.unpatch();

  gl.deleteProgram(this.program);
  gl.deleteBuffer(this.vertexBuffer);
  gl.deleteBuffer(this.indexBuffer);
  gl.deleteTexture(this.renderTarget);
  gl.deleteFramebuffer(this.framebuffer);
  if (this.depthStencilBuffer) {
    gl.deleteRenderbuffer(this.depthStencilBuffer);
  }
  if (this.depthBuffer) {
    gl.deleteRenderbuffer(this.depthBuffer);
  }
  if (this.stencilBuffer) {
    gl.deleteRenderbuffer(this.stencilBuffer);
  }

  if (this.cardboardUI) {
    this.cardboardUI.destroy();
  }
};


/**
 * Resizes the backbuffer to match the canvas width and height.
 */
CardboardDistorter.prototype.onResize = function() {
  var gl = this.gl;
  var self = this;

  var glState = [
    gl.RENDERBUFFER_BINDING,
    gl.TEXTURE_BINDING_2D, gl.TEXTURE0
  ];

  WGLUPreserveGLState(gl, glState, function(gl) {
    // Bind real backbuffer and clear it once. We don't need to clear it again
    // after that because we're overwriting the same area every frame.
    self.realBindFramebuffer.call(gl, gl.FRAMEBUFFER, null);

    // Put things in a good state
    if (self.scissorTest) { self.realDisable.call(gl, gl.SCISSOR_TEST); }
    self.realColorMask.call(gl, true, true, true, true);
    self.realViewport.call(gl, 0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
    self.realClearColor.call(gl, 0, 0, 0, 1);

    gl.clear(gl.COLOR_BUFFER_BIT);

    // Now bind and resize the fake backbuffer
    self.realBindFramebuffer.call(gl, gl.FRAMEBUFFER, self.framebuffer);

    gl.bindTexture(gl.TEXTURE_2D, self.renderTarget);
    gl.texImage2D(gl.TEXTURE_2D, 0, self.ctxAttribs.alpha ? gl.RGBA : gl.RGB,
        self.bufferWidth, self.bufferHeight, 0,
        self.ctxAttribs.alpha ? gl.RGBA : gl.RGB, gl.UNSIGNED_BYTE, null);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, self.renderTarget, 0);

    if (self.ctxAttribs.depth && self.ctxAttribs.stencil) {
      gl.bindRenderbuffer(gl.RENDERBUFFER, self.depthStencilBuffer);
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL,
          self.bufferWidth, self.bufferHeight);
      gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT,
          gl.RENDERBUFFER, self.depthStencilBuffer);
    } else if (self.ctxAttribs.depth) {
      gl.bindRenderbuffer(gl.RENDERBUFFER, self.depthBuffer);
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16,
          self.bufferWidth, self.bufferHeight);
      gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT,
          gl.RENDERBUFFER, self.depthBuffer);
    } else if (self.ctxAttribs.stencil) {
      gl.bindRenderbuffer(gl.RENDERBUFFER, self.stencilBuffer);
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX8,
          self.bufferWidth, self.bufferHeight);
      gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.STENCIL_ATTACHMENT,
          gl.RENDERBUFFER, self.stencilBuffer);
    }

    if (!gl.checkFramebufferStatus(gl.FRAMEBUFFER) === gl.FRAMEBUFFER_COMPLETE) {
      console.error('Framebuffer incomplete!');
    }

    self.realBindFramebuffer.call(gl, gl.FRAMEBUFFER, self.lastBoundFramebuffer);

    if (self.scissorTest) { self.realEnable.call(gl, gl.SCISSOR_TEST); }

    self.realColorMask.apply(gl, self.colorMask);
    self.realViewport.apply(gl, self.viewport);
    self.realClearColor.apply(gl, self.clearColor);
  });

  if (this.cardboardUI) {
    this.cardboardUI.onResize();
  }
};

CardboardDistorter.prototype.patch = function() {
  if (this.isPatched) {
    return;
  }

  var self = this;
  var canvas = this.gl.canvas;
  var gl = this.gl;

  if (!Util.isIOS()) {
    canvas.width = Util.getScreenWidth() * this.bufferScale;
    canvas.height = Util.getScreenHeight() * this.bufferScale;

    Object.defineProperty(canvas, 'width', {
      configurable: true,
      enumerable: true,
      get: function() {
        return self.bufferWidth;
      },
      set: function(value) {
        self.bufferWidth = value;
        self.realCanvasWidth.set.call(canvas, value);
        self.onResize();
      }
    });

    Object.defineProperty(canvas, 'height', {
      configurable: true,
      enumerable: true,
      get: function() {
        return self.bufferHeight;
      },
      set: function(value) {
        self.bufferHeight = value;
        self.realCanvasHeight.set.call(canvas, value);
        self.onResize();
      }
    });
  }

  this.lastBoundFramebuffer = gl.getParameter(gl.FRAMEBUFFER_BINDING);

  if (this.lastBoundFramebuffer == null) {
    this.lastBoundFramebuffer = this.framebuffer;
    this.gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer);
  }

  this.gl.bindFramebuffer = function(target, framebuffer) {
    self.lastBoundFramebuffer = framebuffer ? framebuffer : self.framebuffer;
    // Silently make calls to bind the default framebuffer bind ours instead.
    self.realBindFramebuffer.call(gl, target, self.lastBoundFramebuffer);
  };

  this.cullFace = gl.getParameter(gl.CULL_FACE);
  this.depthTest = gl.getParameter(gl.DEPTH_TEST);
  this.blend = gl.getParameter(gl.BLEND);
  this.scissorTest = gl.getParameter(gl.SCISSOR_TEST);
  this.stencilTest = gl.getParameter(gl.STENCIL_TEST);

  gl.enable = function(pname) {
    switch (pname) {
      case gl.CULL_FACE: self.cullFace = true; break;
      case gl.DEPTH_TEST: self.depthTest = true; break;
      case gl.BLEND: self.blend = true; break;
      case gl.SCISSOR_TEST: self.scissorTest = true; break;
      case gl.STENCIL_TEST: self.stencilTest = true; break;
    }
    self.realEnable.call(gl, pname);
  };

  gl.disable = function(pname) {
    switch (pname) {
      case gl.CULL_FACE: self.cullFace = false; break;
      case gl.DEPTH_TEST: self.depthTest = false; break;
      case gl.BLEND: self.blend = false; break;
      case gl.SCISSOR_TEST: self.scissorTest = false; break;
      case gl.STENCIL_TEST: self.stencilTest = false; break;
    }
    self.realDisable.call(gl, pname);
  };

  this.colorMask = gl.getParameter(gl.COLOR_WRITEMASK);
  gl.colorMask = function(r, g, b, a) {
    self.colorMask[0] = r;
    self.colorMask[1] = g;
    self.colorMask[2] = b;
    self.colorMask[3] = a;
    self.realColorMask.call(gl, r, g, b, a);
  };

  this.clearColor = gl.getParameter(gl.COLOR_CLEAR_VALUE);
  gl.clearColor = function(r, g, b, a) {
    self.clearColor[0] = r;
    self.clearColor[1] = g;
    self.clearColor[2] = b;
    self.clearColor[3] = a;
    self.realClearColor.call(gl, r, g, b, a);
  };

  this.viewport = gl.getParameter(gl.VIEWPORT);
  gl.viewport = function(x, y, w, h) {
    self.viewport[0] = x;
    self.viewport[1] = y;
    self.viewport[2] = w;
    self.viewport[3] = h;
    self.realViewport.call(gl, x, y, w, h);
  };

  this.isPatched = true;
  Util.safariCssSizeWorkaround(canvas);
};

CardboardDistorter.prototype.unpatch = function() {
  if (!this.isPatched) {
    return;
  }

  var gl = this.gl;
  var canvas = this.gl.canvas;

  if (!Util.isIOS()) {
    Object.defineProperty(canvas, 'width', this.realCanvasWidth);
    Object.defineProperty(canvas, 'height', this.realCanvasHeight);
  }
  canvas.width = this.bufferWidth;
  canvas.height = this.bufferHeight;

  gl.bindFramebuffer = this.realBindFramebuffer;
  gl.enable = this.realEnable;
  gl.disable = this.realDisable;
  gl.colorMask = this.realColorMask;
  gl.clearColor = this.realClearColor;
  gl.viewport = this.realViewport;

  // Check to see if our fake backbuffer is bound and bind the real backbuffer
  // if that's the case.
  if (this.lastBoundFramebuffer == this.framebuffer) {
    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
  }

  this.isPatched = false;

  setTimeout(function() {
    Util.safariCssSizeWorkaround(canvas);
  }, 1);
};

CardboardDistorter.prototype.setTextureBounds = function(leftBounds, rightBounds) {
  if (!leftBounds) {
    leftBounds = [0, 0, 0.5, 1];
  }

  if (!rightBounds) {
    rightBounds = [0.5, 0, 0.5, 1];
  }

  // Left eye
  this.viewportOffsetScale[0] = leftBounds[0]; // X
  this.viewportOffsetScale[1] = leftBounds[1]; // Y
  this.viewportOffsetScale[2] = leftBounds[2]; // Width
  this.viewportOffsetScale[3] = leftBounds[3]; // Height

  // Right eye
  this.viewportOffsetScale[4] = rightBounds[0]; // X
  this.viewportOffsetScale[5] = rightBounds[1]; // Y
  this.viewportOffsetScale[6] = rightBounds[2]; // Width
  this.viewportOffsetScale[7] = rightBounds[3]; // Height
};

/**
 * Performs distortion pass on the injected backbuffer, rendering it to the real
 * backbuffer.
 */
CardboardDistorter.prototype.submitFrame = function() {
  var gl = this.gl;
  var self = this;

  var glState = [];

  if (!WebVRConfig.DIRTY_SUBMIT_FRAME_BINDINGS) {
    glState.push(
      gl.CURRENT_PROGRAM,
      gl.ARRAY_BUFFER_BINDING,
      gl.ELEMENT_ARRAY_BUFFER_BINDING,
      gl.TEXTURE_BINDING_2D, gl.TEXTURE0
    );
  }

  WGLUPreserveGLState(gl, glState, function(gl) {
    // Bind the real default framebuffer
    self.realBindFramebuffer.call(gl, gl.FRAMEBUFFER, null);

    // Make sure the GL state is in a good place
    if (self.cullFace) { self.realDisable.call(gl, gl.CULL_FACE); }
    if (self.depthTest) { self.realDisable.call(gl, gl.DEPTH_TEST); }
    if (self.blend) { self.realDisable.call(gl, gl.BLEND); }
    if (self.scissorTest) { self.realDisable.call(gl, gl.SCISSOR_TEST); }
    if (self.stencilTest) { self.realDisable.call(gl, gl.STENCIL_TEST); }
    self.realColorMask.call(gl, true, true, true, true);
    self.realViewport.call(gl, 0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

    // If the backbuffer has an alpha channel clear every frame so the page
    // doesn't show through.
    if (self.ctxAttribs.alpha || Util.isIOS()) {
      self.realClearColor.call(gl, 0, 0, 0, 1);
      gl.clear(gl.COLOR_BUFFER_BIT);
    }

    // Bind distortion program and mesh
    gl.useProgram(self.program);

    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, self.indexBuffer);

    gl.bindBuffer(gl.ARRAY_BUFFER, self.vertexBuffer);
    gl.enableVertexAttribArray(self.attribs.position);
    gl.enableVertexAttribArray(self.attribs.texCoord);
    gl.vertexAttribPointer(self.attribs.position, 2, gl.FLOAT, false, 20, 0);
    gl.vertexAttribPointer(self.attribs.texCoord, 3, gl.FLOAT, false, 20, 8);

    gl.activeTexture(gl.TEXTURE0);
    gl.uniform1i(self.uniforms.diffuse, 0);
    gl.bindTexture(gl.TEXTURE_2D, self.renderTarget);

    gl.uniform4fv(self.uniforms.viewportOffsetScale, self.viewportOffsetScale);

    // Draws both eyes
    gl.drawElements(gl.TRIANGLES, self.indexCount, gl.UNSIGNED_SHORT, 0);

    if (self.cardboardUI) {
      self.cardboardUI.renderNoState();
    }

    // Bind the fake default framebuffer again
    self.realBindFramebuffer.call(self.gl, gl.FRAMEBUFFER, self.framebuffer);

    // If preserveDrawingBuffer == false clear the framebuffer
    if (!self.ctxAttribs.preserveDrawingBuffer) {
      self.realClearColor.call(gl, 0, 0, 0, 0);
      gl.clear(gl.COLOR_BUFFER_BIT);
    }

    if (!WebVRConfig.DIRTY_SUBMIT_FRAME_BINDINGS) {
      self.realBindFramebuffer.call(gl, gl.FRAMEBUFFER, self.lastBoundFramebuffer);
    }

    // Restore state
    if (self.cullFace) { self.realEnable.call(gl, gl.CULL_FACE); }
    if (self.depthTest) { self.realEnable.call(gl, gl.DEPTH_TEST); }
    if (self.blend) { self.realEnable.call(gl, gl.BLEND); }
    if (self.scissorTest) { self.realEnable.call(gl, gl.SCISSOR_TEST); }
    if (self.stencilTest) { self.realEnable.call(gl, gl.STENCIL_TEST); }

    self.realColorMask.apply(gl, self.colorMask);
    self.realViewport.apply(gl, self.viewport);
    if (self.ctxAttribs.alpha || !self.ctxAttribs.preserveDrawingBuffer) {
      self.realClearColor.apply(gl, self.clearColor);
    }
  });

  // Workaround for the fact that Safari doesn't allow us to patch the canvas
  // width and height correctly. After each submit frame check to see what the
  // real backbuffer size has been set to and resize the fake backbuffer size
  // to match.
  if (Util.isIOS()) {
    var canvas = gl.canvas;
    if (canvas.width != self.bufferWidth || canvas.height != self.bufferHeight) {
      self.bufferWidth = canvas.width;
      self.bufferHeight = canvas.height;
      self.onResize();
    }
  }
};

/**
 * Call when the deviceInfo has changed. At this point we need
 * to re-calculate the distortion mesh.
 */
CardboardDistorter.prototype.updateDeviceInfo = function(deviceInfo) {
  var gl = this.gl;
  var self = this;

  var glState = [gl.ARRAY_BUFFER_BINDING, gl.ELEMENT_ARRAY_BUFFER_BINDING];
  WGLUPreserveGLState(gl, glState, function(gl) {
    var vertices = self.computeMeshVertices_(self.meshWidth, self.meshHeight, deviceInfo);
    gl.bindBuffer(gl.ARRAY_BUFFER, self.vertexBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);

    // Indices don't change based on device parameters, so only compute once.
    if (!self.indexCount) {
      var indices = self.computeMeshIndices_(self.meshWidth, self.meshHeight);
      gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, self.indexBuffer);
      gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW);
      self.indexCount = indices.length;
    }
  });
};

/**
 * Build the distortion mesh vertices.
 * Based on code from the Unity cardboard plugin.
 */
CardboardDistorter.prototype.computeMeshVertices_ = function(width, height, deviceInfo) {
  var vertices = new Float32Array(2 * width * height * 5);

  var lensFrustum = deviceInfo.getLeftEyeVisibleTanAngles();
  var noLensFrustum = deviceInfo.getLeftEyeNoLensTanAngles();
  var viewport = deviceInfo.getLeftEyeVisibleScreenRect(noLensFrustum);
  var vidx = 0;
  var iidx = 0;
  for (var e = 0; e < 2; e++) {
    for (var j = 0; j < height; j++) {
      for (var i = 0; i < width; i++, vidx++) {
        var u = i / (width - 1);
        var v = j / (height - 1);

        // Grid points regularly spaced in StreoScreen, and barrel distorted in
        // the mesh.
        var s = u;
        var t = v;
        var x = Util.lerp(lensFrustum[0], lensFrustum[2], u);
        var y = Util.lerp(lensFrustum[3], lensFrustum[1], v);
        var d = Math.sqrt(x * x + y * y);
        var r = deviceInfo.distortion.distortInverse(d);
        var p = x * r / d;
        var q = y * r / d;
        u = (p - noLensFrustum[0]) / (noLensFrustum[2] - noLensFrustum[0]);
        v = (q - noLensFrustum[3]) / (noLensFrustum[1] - noLensFrustum[3]);

        // Convert u,v to mesh screen coordinates.
        var aspect = deviceInfo.device.widthMeters / deviceInfo.device.heightMeters;

        // FIXME: The original Unity plugin multiplied U by the aspect ratio
        // and didn't multiply either value by 2, but that seems to get it
        // really close to correct looking for me. I hate this kind of "Don't
        // know why it works" code though, and wold love a more logical
        // explanation of what needs to happen here.
        u = (viewport.x + u * viewport.width - 0.5) * 2.0; //* aspect;
        v = (viewport.y + v * viewport.height - 0.5) * 2.0;

        vertices[(vidx * 5) + 0] = u; // position.x
        vertices[(vidx * 5) + 1] = v; // position.y
        vertices[(vidx * 5) + 2] = s; // texCoord.x
        vertices[(vidx * 5) + 3] = t; // texCoord.y
        vertices[(vidx * 5) + 4] = e; // texCoord.z (viewport index)
      }
    }
    var w = lensFrustum[2] - lensFrustum[0];
    lensFrustum[0] = -(w + lensFrustum[0]);
    lensFrustum[2] = w - lensFrustum[2];
    w = noLensFrustum[2] - noLensFrustum[0];
    noLensFrustum[0] = -(w + noLensFrustum[0]);
    noLensFrustum[2] = w - noLensFrustum[2];
    viewport.x = 1 - (viewport.x + viewport.width);
  }
  return vertices;
}

/**
 * Build the distortion mesh indices.
 * Based on code from the Unity cardboard plugin.
 */
CardboardDistorter.prototype.computeMeshIndices_ = function(width, height) {
  var indices = new Uint16Array(2 * (width - 1) * (height - 1) * 6);
  var halfwidth = width / 2;
  var halfheight = height / 2;
  var vidx = 0;
  var iidx = 0;
  for (var e = 0; e < 2; e++) {
    for (var j = 0; j < height; j++) {
      for (var i = 0; i < width; i++, vidx++) {
        if (i == 0 || j == 0)
          continue;
        // Build a quad.  Lower right and upper left quadrants have quads with
        // the triangle diagonal flipped to get the vignette to interpolate
        // correctly.
        if ((i <= halfwidth) == (j <= halfheight)) {
          // Quad diagonal lower left to upper right.
          indices[iidx++] = vidx;
          indices[iidx++] = vidx - width - 1;
          indices[iidx++] = vidx - width;
          indices[iidx++] = vidx - width - 1;
          indices[iidx++] = vidx;
          indices[iidx++] = vidx - 1;
        } else {
          // Quad diagonal upper left to lower right.
          indices[iidx++] = vidx - 1;
          indices[iidx++] = vidx - width;
          indices[iidx++] = vidx;
          indices[iidx++] = vidx - width;
          indices[iidx++] = vidx - 1;
          indices[iidx++] = vidx - width - 1;
        }
      }
    }
  }
  return indices;
};

CardboardDistorter.prototype.getOwnPropertyDescriptor_ = function(proto, attrName) {
  var descriptor = Object.getOwnPropertyDescriptor(proto, attrName);
  // In some cases (ahem... Safari), the descriptor returns undefined get and
  // set fields. In this case, we need to create a synthetic property
  // descriptor. This works around some of the issues in
  // https://github.com/borismus/webvr-polyfill/issues/46
  if (descriptor.get === undefined || descriptor.set === undefined) {
    descriptor.configurable = true;
    descriptor.enumerable = true;
    descriptor.get = function() {
      return this.getAttribute(attrName);
    };
    descriptor.set = function(val) {
      this.setAttribute(attrName, val);
    };
  }
  return descriptor;
};

module.exports = CardboardDistorter;

},{"./cardboard-ui.js":5,"./deps/wglu-preserve-state.js":7,"./util.js":22}],5:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Util = _dereq_('./util.js');
var WGLUPreserveGLState = _dereq_('./deps/wglu-preserve-state.js');

var uiVS = [
  'attribute vec2 position;',

  'uniform mat4 projectionMat;',

  'void main() {',
  '  gl_Position = projectionMat * vec4( position, -1.0, 1.0 );',
  '}',
].join('\n');

var uiFS = [
  'precision mediump float;',

  'uniform vec4 color;',

  'void main() {',
  '  gl_FragColor = color;',
  '}',
].join('\n');

var DEG2RAD = Math.PI/180.0;

// The gear has 6 identical sections, each spanning 60 degrees.
var kAnglePerGearSection = 60;

// Half-angle of the span of the outer rim.
var kOuterRimEndAngle = 12;

// Angle between the middle of the outer rim and the start of the inner rim.
var kInnerRimBeginAngle = 20;

// Distance from center to outer rim, normalized so that the entire model
// fits in a [-1, 1] x [-1, 1] square.
var kOuterRadius = 1;

// Distance from center to depressed rim, in model units.
var kMiddleRadius = 0.75;

// Radius of the inner hollow circle, in model units.
var kInnerRadius = 0.3125;

// Center line thickness in DP.
var kCenterLineThicknessDp = 4;

// Button width in DP.
var kButtonWidthDp = 28;

// Factor to scale the touch area that responds to the touch.
var kTouchSlopFactor = 1.5;

var Angles = [
  0, kOuterRimEndAngle, kInnerRimBeginAngle,
  kAnglePerGearSection - kInnerRimBeginAngle,
  kAnglePerGearSection - kOuterRimEndAngle
];

/**
 * Renders the alignment line and "options" gear. It is assumed that the canvas
 * this is rendered into covers the entire screen (or close to it.)
 */
function CardboardUI(gl) {
  this.gl = gl;

  this.attribs = {
    position: 0
  };
  this.program = Util.linkProgram(gl, uiVS, uiFS, this.attribs);
  this.uniforms = Util.getProgramUniforms(gl, this.program);

  this.vertexBuffer = gl.createBuffer();
  this.gearOffset = 0;
  this.gearVertexCount = 0;
  this.arrowOffset = 0;
  this.arrowVertexCount = 0;

  this.projMat = new Float32Array(16);

  this.listener = null;

  this.onResize();
};

/**
 * Tears down all the resources created by the UI renderer.
 */
CardboardUI.prototype.destroy = function() {
  var gl = this.gl;

  if (this.listener) {
    gl.canvas.removeEventListener('click', this.listener, false);
  }

  gl.deleteProgram(this.program);
  gl.deleteBuffer(this.vertexBuffer);
};

/**
 * Adds a listener to clicks on the gear and back icons
 */
CardboardUI.prototype.listen = function(optionsCallback, backCallback) {
  var canvas = this.gl.canvas;
  this.listener = function(event) {
    var midline = canvas.clientWidth / 2;
    var buttonSize = kButtonWidthDp * kTouchSlopFactor;
    // Check to see if the user clicked on (or around) the gear icon
    if (event.clientX > midline - buttonSize &&
        event.clientX < midline + buttonSize &&
        event.clientY > canvas.clientHeight - buttonSize) {
      optionsCallback(event);
    }
    // Check to see if the user clicked on (or around) the back icon
    else if (event.clientX < buttonSize && event.clientY < buttonSize) {
      backCallback(event);
    }
  };
  canvas.addEventListener('click', this.listener, false);
};

/**
 * Builds the UI mesh.
 */
CardboardUI.prototype.onResize = function() {
  var gl = this.gl;
  var self = this;

  var glState = [
    gl.ARRAY_BUFFER_BINDING
  ];

  WGLUPreserveGLState(gl, glState, function(gl) {
    var vertices = [];

    var midline = gl.drawingBufferWidth / 2;

    // Assumes your canvas width and height is scaled proportionately.
    // TODO(smus): The following causes buttons to become huge on iOS, but seems
    // like the right thing to do. For now, added a hack. But really, investigate why.
    var dps = (gl.drawingBufferWidth / (screen.width * window.devicePixelRatio));
    if (!Util.isIOS()) {
      dps *= window.devicePixelRatio;
    }

    var lineWidth = kCenterLineThicknessDp * dps / 2;
    var buttonSize = kButtonWidthDp * kTouchSlopFactor * dps;
    var buttonScale = kButtonWidthDp * dps / 2;
    var buttonBorder = ((kButtonWidthDp * kTouchSlopFactor) - kButtonWidthDp) * dps;

    // Build centerline
    vertices.push(midline - lineWidth, buttonSize);
    vertices.push(midline - lineWidth, gl.drawingBufferHeight);
    vertices.push(midline + lineWidth, buttonSize);
    vertices.push(midline + lineWidth, gl.drawingBufferHeight);

    // Build gear
    self.gearOffset = (vertices.length / 2);

    function addGearSegment(theta, r) {
      var angle = (90 - theta) * DEG2RAD;
      var x = Math.cos(angle);
      var y = Math.sin(angle);
      vertices.push(kInnerRadius * x * buttonScale + midline, kInnerRadius * y * buttonScale + buttonScale);
      vertices.push(r * x * buttonScale + midline, r * y * buttonScale + buttonScale);
    }

    for (var i = 0; i <= 6; i++) {
      var segmentTheta = i * kAnglePerGearSection;

      addGearSegment(segmentTheta, kOuterRadius);
      addGearSegment(segmentTheta + kOuterRimEndAngle, kOuterRadius);
      addGearSegment(segmentTheta + kInnerRimBeginAngle, kMiddleRadius);
      addGearSegment(segmentTheta + (kAnglePerGearSection - kInnerRimBeginAngle), kMiddleRadius);
      addGearSegment(segmentTheta + (kAnglePerGearSection - kOuterRimEndAngle), kOuterRadius);
    }

    self.gearVertexCount = (vertices.length / 2) - self.gearOffset;

    // Build back arrow
    self.arrowOffset = (vertices.length / 2);

    function addArrowVertex(x, y) {
      vertices.push(buttonBorder + x, gl.drawingBufferHeight - buttonBorder - y);
    }

    var angledLineWidth = lineWidth / Math.sin(45 * DEG2RAD);

    addArrowVertex(0, buttonScale);
    addArrowVertex(buttonScale, 0);
    addArrowVertex(buttonScale + angledLineWidth, angledLineWidth);
    addArrowVertex(angledLineWidth, buttonScale + angledLineWidth);

    addArrowVertex(angledLineWidth, buttonScale - angledLineWidth);
    addArrowVertex(0, buttonScale);
    addArrowVertex(buttonScale, buttonScale * 2);
    addArrowVertex(buttonScale + angledLineWidth, (buttonScale * 2) - angledLineWidth);

    addArrowVertex(angledLineWidth, buttonScale - angledLineWidth);
    addArrowVertex(0, buttonScale);

    addArrowVertex(angledLineWidth, buttonScale - lineWidth);
    addArrowVertex(kButtonWidthDp * dps, buttonScale - lineWidth);
    addArrowVertex(angledLineWidth, buttonScale + lineWidth);
    addArrowVertex(kButtonWidthDp * dps, buttonScale + lineWidth);

    self.arrowVertexCount = (vertices.length / 2) - self.arrowOffset;

    // Buffer data
    gl.bindBuffer(gl.ARRAY_BUFFER, self.vertexBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
  });
};

/**
 * Performs distortion pass on the injected backbuffer, rendering it to the real
 * backbuffer.
 */
CardboardUI.prototype.render = function() {
  var gl = this.gl;
  var self = this;

  var glState = [
    gl.CULL_FACE,
    gl.DEPTH_TEST,
    gl.BLEND,
    gl.SCISSOR_TEST,
    gl.STENCIL_TEST,
    gl.COLOR_WRITEMASK,
    gl.VIEWPORT,

    gl.CURRENT_PROGRAM,
    gl.ARRAY_BUFFER_BINDING
  ];

  WGLUPreserveGLState(gl, glState, function(gl) {
    // Make sure the GL state is in a good place
    gl.disable(gl.CULL_FACE);
    gl.disable(gl.DEPTH_TEST);
    gl.disable(gl.BLEND);
    gl.disable(gl.SCISSOR_TEST);
    gl.disable(gl.STENCIL_TEST);
    gl.colorMask(true, true, true, true);
    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

    self.renderNoState();
  });
};

CardboardUI.prototype.renderNoState = function() {
  var gl = this.gl;

  // Bind distortion program and mesh
  gl.useProgram(this.program);

  gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
  gl.enableVertexAttribArray(this.attribs.position);
  gl.vertexAttribPointer(this.attribs.position, 2, gl.FLOAT, false, 8, 0);

  gl.uniform4f(this.uniforms.color, 1.0, 1.0, 1.0, 1.0);

  Util.orthoMatrix(this.projMat, 0, gl.drawingBufferWidth, 0, gl.drawingBufferHeight, 0.1, 1024.0);
  gl.uniformMatrix4fv(this.uniforms.projectionMat, false, this.projMat);

  // Draws UI element
  gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
  gl.drawArrays(gl.TRIANGLE_STRIP, this.gearOffset, this.gearVertexCount);
  gl.drawArrays(gl.TRIANGLE_STRIP, this.arrowOffset, this.arrowVertexCount);
};

module.exports = CardboardUI;

},{"./deps/wglu-preserve-state.js":7,"./util.js":22}],6:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var CardboardDistorter = _dereq_('./cardboard-distorter.js');
var CardboardUI = _dereq_('./cardboard-ui.js');
var DeviceInfo = _dereq_('./device-info.js');
var Dpdb = _dereq_('./dpdb/dpdb.js');
var FusionPoseSensor = _dereq_('./sensor-fusion/fusion-pose-sensor.js');
var RotateInstructions = _dereq_('./rotate-instructions.js');
var ViewerSelector = _dereq_('./viewer-selector.js');
var VRDisplay = _dereq_('./base.js').VRDisplay;
var Util = _dereq_('./util.js');

var Eye = {
  LEFT: 'left',
  RIGHT: 'right'
};

/**
 * VRDisplay based on mobile device parameters and DeviceMotion APIs.
 */
function CardboardVRDisplay() {
  this.displayName = 'Cardboard VRDisplay (webvr-polyfill)';

  this.capabilities.hasOrientation = true;
  this.capabilities.canPresent = true;

  // "Private" members.
  this.bufferScale_ = WebVRConfig.BUFFER_SCALE;
  this.poseSensor_ = new FusionPoseSensor();
  this.distorter_ = null;
  this.cardboardUI_ = null;

  this.dpdb_ = new Dpdb(true, this.onDeviceParamsUpdated_.bind(this));
  this.deviceInfo_ = new DeviceInfo(this.dpdb_.getDeviceParams());

  this.viewerSelector_ = new ViewerSelector();
  this.viewerSelector_.on('change', this.onViewerChanged_.bind(this));

  // Set the correct initial viewer.
  this.deviceInfo_.setViewer(this.viewerSelector_.getCurrentViewer());

  if (!WebVRConfig.ROTATE_INSTRUCTIONS_DISABLED) {
    this.rotateInstructions_ = new RotateInstructions();
  }

  if (Util.isIOS()) {
    // Listen for resize events to workaround this awful Safari bug.
    window.addEventListener('resize', this.onResize_.bind(this));
  }
}
CardboardVRDisplay.prototype = new VRDisplay();

CardboardVRDisplay.prototype.getImmediatePose = function() {
  return {
    position: this.poseSensor_.getPosition(),
    orientation: this.poseSensor_.getOrientation(),
    linearVelocity: null,
    linearAcceleration: null,
    angularVelocity: null,
    angularAcceleration: null
  };
};

CardboardVRDisplay.prototype.resetPose = function() {
  this.poseSensor_.resetPose();
};

CardboardVRDisplay.prototype.getEyeParameters = function(whichEye) {
  var offset = [this.deviceInfo_.viewer.interLensDistance * 0.5, 0.0, 0.0];
  var fieldOfView;

  // TODO: FoV can be a little expensive to compute. Cache when device params change.
  if (whichEye == Eye.LEFT) {
    offset[0] *= -1.0;
    fieldOfView = this.deviceInfo_.getFieldOfViewLeftEye();
  } else if (whichEye == Eye.RIGHT) {
    fieldOfView = this.deviceInfo_.getFieldOfViewRightEye();
  } else {
    console.error('Invalid eye provided: %s', whichEye);
    return null;
  }

  return {
    fieldOfView: fieldOfView,
    offset: offset,
    // TODO: Should be able to provide better values than these.
    renderWidth: this.deviceInfo_.device.width * 0.5 * this.bufferScale_,
    renderHeight: this.deviceInfo_.device.height * this.bufferScale_,
  };
};

CardboardVRDisplay.prototype.onDeviceParamsUpdated_ = function(newParams) {
  if (Util.isDebug()) {
    console.log('DPDB reported that device params were updated.');
  }
  this.deviceInfo_.updateDeviceParams(newParams);

  if (this.distorter_) {
    this.distorter_.updateDeviceInfo(this.deviceInfo_);
  }
};

CardboardVRDisplay.prototype.updateBounds_ = function () {
  if (this.layer_ && this.distorter_ && (this.layer_.leftBounds || this.layer_.rightBounds)) {
    this.distorter_.setTextureBounds(this.layer_.leftBounds, this.layer_.rightBounds);
  }
};

CardboardVRDisplay.prototype.beginPresent_ = function() {
  var gl = this.layer_.source.getContext('webgl');
  if (!gl)
    gl = this.layer_.source.getContext('experimental-webgl');
  if (!gl)
    gl = this.layer_.source.getContext('webgl2');

  if (!gl)
    return; // Can't do distortion without a WebGL context.

  // Provides a way to opt out of distortion
  if (this.layer_.predistorted) {
    if (!WebVRConfig.CARDBOARD_UI_DISABLED) {
      gl.canvas.width = Util.getScreenWidth() * this.bufferScale_;
      gl.canvas.height = Util.getScreenHeight() * this.bufferScale_;
      this.cardboardUI_ = new CardboardUI(gl);
    }
  } else {
    // Create a new distorter for the target context
    this.distorter_ = new CardboardDistorter(gl);
    this.distorter_.updateDeviceInfo(this.deviceInfo_);
    this.cardboardUI_ = this.distorter_.cardboardUI;
  }

  if (this.cardboardUI_) {
    this.cardboardUI_.listen(function(e) {
      // Options clicked.
      this.viewerSelector_.show(this.layer_.source.parentElement);
      e.stopPropagation();
      e.preventDefault();
    }.bind(this), function(e) {
      // Back clicked.
      this.exitPresent();
      e.stopPropagation();
      e.preventDefault();
    }.bind(this));
  }

  if (this.rotateInstructions_) {
    if (Util.isLandscapeMode() && Util.isMobile()) {
      // In landscape mode, temporarily show the "put into Cardboard"
      // interstitial. Otherwise, do the default thing.
      this.rotateInstructions_.showTemporarily(3000, this.layer_.source.parentElement);
    } else {
      this.rotateInstructions_.update();
    }
  }

  // Listen for orientation change events in order to show interstitial.
  this.orientationHandler = this.onOrientationChange_.bind(this);
  window.addEventListener('orientationchange', this.orientationHandler);

  // Listen for present display change events in order to update distorter dimensions
  this.vrdisplaypresentchangeHandler = this.updateBounds_.bind(this);
  window.addEventListener('vrdisplaypresentchange', this.vrdisplaypresentchangeHandler);

  // Fire this event initially, to give geometry-distortion clients the chance
  // to do something custom.
  this.fireVRDisplayDeviceParamsChange_();
};

CardboardVRDisplay.prototype.endPresent_ = function() {
  if (this.distorter_) {
    this.distorter_.destroy();
    this.distorter_ = null;
  }
  if (this.cardboardUI_) {
    this.cardboardUI_.destroy();
    this.cardboardUI_ = null;
  }

  if (this.rotateInstructions_) {
    this.rotateInstructions_.hide();
  }
  this.viewerSelector_.hide();

  window.removeEventListener('orientationchange', this.orientationHandler);
  window.removeEventListener('vrdisplaypresentchange', this.vrdisplaypresentchangeHandler);
};

CardboardVRDisplay.prototype.submitFrame = function(pose) {
  if (this.distorter_) {
    this.distorter_.submitFrame();
  } else if (this.cardboardUI_ && this.layer_) {
    // Hack for predistorted: true.
    var canvas = this.layer_.source.getContext('webgl').canvas;
    if (canvas.width != this.lastWidth || canvas.height != this.lastHeight) {
      this.cardboardUI_.onResize();
    }
    this.lastWidth = canvas.width;
    this.lastHeight = canvas.height;

    // Render the Cardboard UI.
    this.cardboardUI_.render();
  }
};

CardboardVRDisplay.prototype.onOrientationChange_ = function(e) {
  // Hide the viewer selector.
  this.viewerSelector_.hide();

  // Update the rotate instructions.
  if (this.rotateInstructions_) {
    this.rotateInstructions_.update();
  }

  this.onResize_();
};

CardboardVRDisplay.prototype.onResize_ = function(e) {
  if (this.layer_) {
    var gl = this.layer_.source.getContext('webgl');
    // Size the CSS canvas.
    // Added padding on right and bottom because iPhone 5 will not
    // hide the URL bar unless content is bigger than the screen.
    // This will not be visible as long as the container element (e.g. body)
    // is set to 'overflow: hidden'.
    var cssProperties = [
      'position: absolute',
      'top: 0',
      'left: 0',
      'width: ' + Math.max(screen.width, screen.height) + 'px',
      'height: ' + Math.min(screen.height, screen.width) + 'px',
      'border: 0',
      'margin: 0',
      'padding: 0 10px 10px 0',
    ];
    gl.canvas.setAttribute('style', cssProperties.join('; ') + ';');

    Util.safariCssSizeWorkaround(gl.canvas);
  }
};

CardboardVRDisplay.prototype.onViewerChanged_ = function(viewer) {
  this.deviceInfo_.setViewer(viewer);

  if (this.distorter_) {
    // Update the distortion appropriately.
    this.distorter_.updateDeviceInfo(this.deviceInfo_);
  }

  // Fire a new event containing viewer and device parameters for clients that
  // want to implement their own geometry-based distortion.
  this.fireVRDisplayDeviceParamsChange_();
};

CardboardVRDisplay.prototype.fireVRDisplayDeviceParamsChange_ = function() {
  var event = new CustomEvent('vrdisplaydeviceparamschange', {
    detail: {
      vrdisplay: this,
      deviceInfo: this.deviceInfo_,
    }
  });
  window.dispatchEvent(event);
};

module.exports = CardboardVRDisplay;

},{"./base.js":3,"./cardboard-distorter.js":4,"./cardboard-ui.js":5,"./device-info.js":8,"./dpdb/dpdb.js":12,"./rotate-instructions.js":16,"./sensor-fusion/fusion-pose-sensor.js":18,"./util.js":22,"./viewer-selector.js":23}],7:[function(_dereq_,module,exports){
/*
Copyright (c) 2016, Brandon Jones.

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.
*/

/*
Caches specified GL state, runs a callback, and restores the cached state when
done.

Example usage:

var savedState = [
  gl.ARRAY_BUFFER_BINDING,

  // TEXTURE_BINDING_2D or _CUBE_MAP must always be followed by the texure unit.
  gl.TEXTURE_BINDING_2D, gl.TEXTURE0,

  gl.CLEAR_COLOR,
];
// After this call the array buffer, texture unit 0, active texture, and clear
// color will be restored. The viewport will remain changed, however, because
// gl.VIEWPORT was not included in the savedState list.
WGLUPreserveGLState(gl, savedState, function(gl) {
  gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

  gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
  gl.bufferData(gl.ARRAY_BUFFER, ....);

  gl.activeTexture(gl.TEXTURE0);
  gl.bindTexture(gl.TEXTURE_2D, texture);
  gl.texImage2D(gl.TEXTURE_2D, ...);

  gl.clearColor(1, 0, 0, 1);
  gl.clear(gl.COLOR_BUFFER_BIT);
});

Note that this is not intended to be fast. Managing state in your own code to
avoid redundant state setting and querying will always be faster. This function
is most useful for cases where you may not have full control over the WebGL
calls being made, such as tooling or effect injectors.
*/

function WGLUPreserveGLState(gl, bindings, callback) {
  if (!bindings) {
    callback(gl);
    return;
  }

  var boundValues = [];

  var activeTexture = null;
  for (var i = 0; i < bindings.length; ++i) {
    var binding = bindings[i];
    switch (binding) {
      case gl.TEXTURE_BINDING_2D:
      case gl.TEXTURE_BINDING_CUBE_MAP:
        var textureUnit = bindings[++i];
        if (textureUnit < gl.TEXTURE0 || textureUnit > gl.TEXTURE31) {
          console.error("TEXTURE_BINDING_2D or TEXTURE_BINDING_CUBE_MAP must be followed by a valid texture unit");
          boundValues.push(null, null);
          break;
        }
        if (!activeTexture) {
          activeTexture = gl.getParameter(gl.ACTIVE_TEXTURE);
        }
        gl.activeTexture(textureUnit);
        boundValues.push(gl.getParameter(binding), null);
        break;
      case gl.ACTIVE_TEXTURE:
        activeTexture = gl.getParameter(gl.ACTIVE_TEXTURE);
        boundValues.push(null);
        break;
      default:
        boundValues.push(gl.getParameter(binding));
        break;
    }
  }

  callback(gl);

  for (var i = 0; i < bindings.length; ++i) {
    var binding = bindings[i];
    var boundValue = boundValues[i];
    switch (binding) {
      case gl.ACTIVE_TEXTURE:
        break; // Ignore this binding, since we special-case it to happen last.
      case gl.ARRAY_BUFFER_BINDING:
        gl.bindBuffer(gl.ARRAY_BUFFER, boundValue);
        break;
      case gl.COLOR_CLEAR_VALUE:
        gl.clearColor(boundValue[0], boundValue[1], boundValue[2], boundValue[3]);
        break;
      case gl.COLOR_WRITEMASK:
        gl.colorMask(boundValue[0], boundValue[1], boundValue[2], boundValue[3]);
        break;
      case gl.CURRENT_PROGRAM:
        gl.useProgram(boundValue);
        break;
      case gl.ELEMENT_ARRAY_BUFFER_BINDING:
        gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, boundValue);
        break;
      case gl.FRAMEBUFFER_BINDING:
        gl.bindFramebuffer(gl.FRAMEBUFFER, boundValue);
        break;
      case gl.RENDERBUFFER_BINDING:
        gl.bindRenderbuffer(gl.RENDERBUFFER, boundValue);
        break;
      case gl.TEXTURE_BINDING_2D:
        var textureUnit = bindings[++i];
        if (textureUnit < gl.TEXTURE0 || textureUnit > gl.TEXTURE31)
          break;
        gl.activeTexture(textureUnit);
        gl.bindTexture(gl.TEXTURE_2D, boundValue);
        break;
      case gl.TEXTURE_BINDING_CUBE_MAP:
        var textureUnit = bindings[++i];
        if (textureUnit < gl.TEXTURE0 || textureUnit > gl.TEXTURE31)
          break;
        gl.activeTexture(textureUnit);
        gl.bindTexture(gl.TEXTURE_CUBE_MAP, boundValue);
        break;
      case gl.VIEWPORT:
        gl.viewport(boundValue[0], boundValue[1], boundValue[2], boundValue[3]);
        break;
      case gl.BLEND:
      case gl.CULL_FACE:
      case gl.DEPTH_TEST:
      case gl.SCISSOR_TEST:
      case gl.STENCIL_TEST:
        if (boundValue) {
          gl.enable(binding);
        } else {
          gl.disable(binding);
        }
        break;
      default:
        console.log("No GL restore behavior for 0x" + binding.toString(16));
        break;
    }

    if (activeTexture) {
      gl.activeTexture(activeTexture);
    }
  }
}

module.exports = WGLUPreserveGLState;
},{}],8:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Distortion = _dereq_('./distortion/distortion.js');
var MathUtil = _dereq_('./math-util.js');
var Util = _dereq_('./util.js');

function Device(params) {
  this.width = params.width || Util.getScreenWidth();
  this.height = params.height || Util.getScreenHeight();
  this.widthMeters = params.widthMeters;
  this.heightMeters = params.heightMeters;
  this.bevelMeters = params.bevelMeters;
}


// Fallback Android device (based on Nexus 5 measurements) for use when
// we can't recognize an Android device.
var DEFAULT_ANDROID = new Device({
  widthMeters: 0.110,
  heightMeters: 0.062,
  bevelMeters: 0.004
});

// Fallback iOS device (based on iPhone6) for use when
// we can't recognize an Android device.
var DEFAULT_IOS = new Device({
  widthMeters: 0.1038,
  heightMeters: 0.0584,
  bevelMeters: 0.004
});


var Viewers = {
  CardboardV1: new CardboardViewer({
    id: 'CardboardV1',
    label: 'Cardboard I/O 2014',
    fov: 40,
    interLensDistance: 0.060,
    baselineLensDistance: 0.035,
    screenLensDistance: 0.042,
    distortionCoefficients: [0.441, 0.156],
    inverseCoefficients: [-0.4410035, 0.42756155, -0.4804439, 0.5460139,
      -0.58821183, 0.5733938, -0.48303202, 0.33299083, -0.17573841,
      0.0651772, -0.01488963, 0.001559834]
  }),
  CardboardV2: new CardboardViewer({
    id: 'CardboardV2',
    label: 'Cardboard I/O 2015',
    fov: 60,
    interLensDistance: 0.064,
    baselineLensDistance: 0.035,
    screenLensDistance: 0.039,
    distortionCoefficients: [0.34, 0.55],
    inverseCoefficients: [-0.33836704, -0.18162185, 0.862655, -1.2462051,
      1.0560602, -0.58208317, 0.21609078, -0.05444823, 0.009177956,
      -9.904169E-4, 6.183535E-5, -1.6981803E-6]
  })
};


var DEFAULT_LEFT_CENTER = {x: 0.5, y: 0.5};
var DEFAULT_RIGHT_CENTER = {x: 0.5, y: 0.5};

/**
 * Manages information about the device and the viewer.
 *
 * deviceParams indicates the parameters of the device to use (generally
 * obtained from dpdb.getDeviceParams()). Can be null to mean no device
 * params were found.
 */
function DeviceInfo(deviceParams) {
  this.viewer = Viewers.CardboardV2;
  this.updateDeviceParams(deviceParams);
  this.distortion = new Distortion(this.viewer.distortionCoefficients);
}

DeviceInfo.prototype.updateDeviceParams = function(deviceParams) {
  this.device = this.determineDevice_(deviceParams) || this.device;
};

DeviceInfo.prototype.getDevice = function() {
  return this.device;
};

DeviceInfo.prototype.setViewer = function(viewer) {
  this.viewer = viewer;
  this.distortion = new Distortion(this.viewer.distortionCoefficients);
};

DeviceInfo.prototype.determineDevice_ = function(deviceParams) {
  if (!deviceParams) {
    // No parameters, so use a default.
    if (Util.isIOS()) {
      console.warn('Using fallback iOS device measurements.');
      return DEFAULT_IOS;
    } else {
      console.warn('Using fallback Android device measurements.');
      return DEFAULT_ANDROID;
    }
  }

  // Compute device screen dimensions based on deviceParams.
  var METERS_PER_INCH = 0.0254;
  var metersPerPixelX = METERS_PER_INCH / deviceParams.xdpi;
  var metersPerPixelY = METERS_PER_INCH / deviceParams.ydpi;
  var width = Util.getScreenWidth();
  var height = Util.getScreenHeight();
  return new Device({
    widthMeters: metersPerPixelX * width,
    heightMeters: metersPerPixelY * height,
    bevelMeters: deviceParams.bevelMm * 0.001,
  });
};

/**
 * Calculates field of view for the left eye.
 */
DeviceInfo.prototype.getDistortedFieldOfViewLeftEye = function() {
  var viewer = this.viewer;
  var device = this.device;
  var distortion = this.distortion;

  // Device.height and device.width for device in portrait mode, so transpose.
  var eyeToScreenDistance = viewer.screenLensDistance;

  var outerDist = (device.widthMeters - viewer.interLensDistance) / 2;
  var innerDist = viewer.interLensDistance / 2;
  var bottomDist = viewer.baselineLensDistance - device.bevelMeters;
  var topDist = device.heightMeters - bottomDist;

  var outerAngle = MathUtil.radToDeg * Math.atan(
      distortion.distort(outerDist / eyeToScreenDistance));
  var innerAngle = MathUtil.radToDeg * Math.atan(
      distortion.distort(innerDist / eyeToScreenDistance));
  var bottomAngle = MathUtil.radToDeg * Math.atan(
      distortion.distort(bottomDist / eyeToScreenDistance));
  var topAngle = MathUtil.radToDeg * Math.atan(
      distortion.distort(topDist / eyeToScreenDistance));

  return {
    leftDegrees: Math.min(outerAngle, viewer.fov),
    rightDegrees: Math.min(innerAngle, viewer.fov),
    downDegrees: Math.min(bottomAngle, viewer.fov),
    upDegrees: Math.min(topAngle, viewer.fov)
  };
};

/**
 * Calculates the tan-angles from the maximum FOV for the left eye for the
 * current device and screen parameters.
 */
DeviceInfo.prototype.getLeftEyeVisibleTanAngles = function() {
  var viewer = this.viewer;
  var device = this.device;
  var distortion = this.distortion;

  // Tan-angles from the max FOV.
  var fovLeft = Math.tan(-MathUtil.degToRad * viewer.fov);
  var fovTop = Math.tan(MathUtil.degToRad * viewer.fov);
  var fovRight = Math.tan(MathUtil.degToRad * viewer.fov);
  var fovBottom = Math.tan(-MathUtil.degToRad * viewer.fov);
  // Viewport size.
  var halfWidth = device.widthMeters / 4;
  var halfHeight = device.heightMeters / 2;
  // Viewport center, measured from left lens position.
  var verticalLensOffset = (viewer.baselineLensDistance - device.bevelMeters - halfHeight);
  var centerX = viewer.interLensDistance / 2 - halfWidth;
  var centerY = -verticalLensOffset;
  var centerZ = viewer.screenLensDistance;
  // Tan-angles of the viewport edges, as seen through the lens.
  var screenLeft = distortion.distort((centerX - halfWidth) / centerZ);
  var screenTop = distortion.distort((centerY + halfHeight) / centerZ);
  var screenRight = distortion.distort((centerX + halfWidth) / centerZ);
  var screenBottom = distortion.distort((centerY - halfHeight) / centerZ);
  // Compare the two sets of tan-angles and take the value closer to zero on each side.
  var result = new Float32Array(4);
  result[0] = Math.max(fovLeft, screenLeft);
  result[1] = Math.min(fovTop, screenTop);
  result[2] = Math.min(fovRight, screenRight);
  result[3] = Math.max(fovBottom, screenBottom);
  return result;
};

/**
 * Calculates the tan-angles from the maximum FOV for the left eye for the
 * current device and screen parameters, assuming no lenses.
 */
DeviceInfo.prototype.getLeftEyeNoLensTanAngles = function() {
  var viewer = this.viewer;
  var device = this.device;
  var distortion = this.distortion;

  var result = new Float32Array(4);
  // Tan-angles from the max FOV.
  var fovLeft = distortion.distortInverse(Math.tan(-MathUtil.degToRad * viewer.fov));
  var fovTop = distortion.distortInverse(Math.tan(MathUtil.degToRad * viewer.fov));
  var fovRight = distortion.distortInverse(Math.tan(MathUtil.degToRad * viewer.fov));
  var fovBottom = distortion.distortInverse(Math.tan(-MathUtil.degToRad * viewer.fov));
  // Viewport size.
  var halfWidth = device.widthMeters / 4;
  var halfHeight = device.heightMeters / 2;
  // Viewport center, measured from left lens position.
  var verticalLensOffset = (viewer.baselineLensDistance - device.bevelMeters - halfHeight);
  var centerX = viewer.interLensDistance / 2 - halfWidth;
  var centerY = -verticalLensOffset;
  var centerZ = viewer.screenLensDistance;
  // Tan-angles of the viewport edges, as seen through the lens.
  var screenLeft = (centerX - halfWidth) / centerZ;
  var screenTop = (centerY + halfHeight) / centerZ;
  var screenRight = (centerX + halfWidth) / centerZ;
  var screenBottom = (centerY - halfHeight) / centerZ;
  // Compare the two sets of tan-angles and take the value closer to zero on each side.
  result[0] = Math.max(fovLeft, screenLeft);
  result[1] = Math.min(fovTop, screenTop);
  result[2] = Math.min(fovRight, screenRight);
  result[3] = Math.max(fovBottom, screenBottom);
  return result;
};

/**
 * Calculates the screen rectangle visible from the left eye for the
 * current device and screen parameters.
 */
DeviceInfo.prototype.getLeftEyeVisibleScreenRect = function(undistortedFrustum) {
  var viewer = this.viewer;
  var device = this.device;

  var dist = viewer.screenLensDistance;
  var eyeX = (device.widthMeters - viewer.interLensDistance) / 2;
  var eyeY = viewer.baselineLensDistance - device.bevelMeters;
  var left = (undistortedFrustum[0] * dist + eyeX) / device.widthMeters;
  var top = (undistortedFrustum[1] * dist + eyeY) / device.heightMeters;
  var right = (undistortedFrustum[2] * dist + eyeX) / device.widthMeters;
  var bottom = (undistortedFrustum[3] * dist + eyeY) / device.heightMeters;
  return {
    x: left,
    y: bottom,
    width: right - left,
    height: top - bottom
  };
};

DeviceInfo.prototype.getFieldOfViewLeftEye = function(opt_isUndistorted) {
  return opt_isUndistorted ? this.getUndistortedFieldOfViewLeftEye() :
      this.getDistortedFieldOfViewLeftEye();
};

DeviceInfo.prototype.getFieldOfViewRightEye = function(opt_isUndistorted) {
  var fov = this.getFieldOfViewLeftEye(opt_isUndistorted);
  return {
    leftDegrees: fov.rightDegrees,
    rightDegrees: fov.leftDegrees,
    upDegrees: fov.upDegrees,
    downDegrees: fov.downDegrees
  };
};

/**
 * Calculates undistorted field of view for the left eye.
 */
DeviceInfo.prototype.getUndistortedFieldOfViewLeftEye = function() {
  var p = this.getUndistortedParams_();

  return {
    leftDegrees: MathUtil.radToDeg * Math.atan(p.outerDist),
    rightDegrees: MathUtil.radToDeg * Math.atan(p.innerDist),
    downDegrees: MathUtil.radToDeg * Math.atan(p.bottomDist),
    upDegrees: MathUtil.radToDeg * Math.atan(p.topDist)
  };
};

DeviceInfo.prototype.getUndistortedViewportLeftEye = function() {
  var p = this.getUndistortedParams_();
  var viewer = this.viewer;
  var device = this.device;

  // Distances stored in local variables are in tan-angle units unless otherwise
  // noted.
  var eyeToScreenDistance = viewer.screenLensDistance;
  var screenWidth = device.widthMeters / eyeToScreenDistance;
  var screenHeight = device.heightMeters / eyeToScreenDistance;
  var xPxPerTanAngle = device.width / screenWidth;
  var yPxPerTanAngle = device.height / screenHeight;

  var x = Math.round((p.eyePosX - p.outerDist) * xPxPerTanAngle);
  var y = Math.round((p.eyePosY - p.bottomDist) * yPxPerTanAngle);
  return {
    x: x,
    y: y,
    width: Math.round((p.eyePosX + p.innerDist) * xPxPerTanAngle) - x,
    height: Math.round((p.eyePosY + p.topDist) * yPxPerTanAngle) - y
  };
};

DeviceInfo.prototype.getUndistortedParams_ = function() {
  var viewer = this.viewer;
  var device = this.device;
  var distortion = this.distortion;

  // Most of these variables in tan-angle units.
  var eyeToScreenDistance = viewer.screenLensDistance;
  var halfLensDistance = viewer.interLensDistance / 2 / eyeToScreenDistance;
  var screenWidth = device.widthMeters / eyeToScreenDistance;
  var screenHeight = device.heightMeters / eyeToScreenDistance;

  var eyePosX = screenWidth / 2 - halfLensDistance;
  var eyePosY = (viewer.baselineLensDistance - device.bevelMeters) / eyeToScreenDistance;

  var maxFov = viewer.fov;
  var viewerMax = distortion.distortInverse(Math.tan(MathUtil.degToRad * maxFov));
  var outerDist = Math.min(eyePosX, viewerMax);
  var innerDist = Math.min(halfLensDistance, viewerMax);
  var bottomDist = Math.min(eyePosY, viewerMax);
  var topDist = Math.min(screenHeight - eyePosY, viewerMax);

  return {
    outerDist: outerDist,
    innerDist: innerDist,
    topDist: topDist,
    bottomDist: bottomDist,
    eyePosX: eyePosX,
    eyePosY: eyePosY
  };
};


function CardboardViewer(params) {
  // A machine readable ID.
  this.id = params.id;
  // A human readable label.
  this.label = params.label;

  // Field of view in degrees (per side).
  this.fov = params.fov;

  // Distance between lens centers in meters.
  this.interLensDistance = params.interLensDistance;
  // Distance between viewer baseline and lens center in meters.
  this.baselineLensDistance = params.baselineLensDistance;
  // Screen-to-lens distance in meters.
  this.screenLensDistance = params.screenLensDistance;

  // Distortion coefficients.
  this.distortionCoefficients = params.distortionCoefficients;
  // Inverse distortion coefficients.
  // TODO: Calculate these from distortionCoefficients in the future.
  this.inverseCoefficients = params.inverseCoefficients;
}

// Export viewer information.
DeviceInfo.Viewers = Viewers;
module.exports = DeviceInfo;

},{"./distortion/distortion.js":10,"./math-util.js":14,"./util.js":22}],9:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var VRDisplay = _dereq_('./base.js').VRDisplay;
var HMDVRDevice = _dereq_('./base.js').HMDVRDevice;
var PositionSensorVRDevice = _dereq_('./base.js').PositionSensorVRDevice;

/**
 * Wraps a VRDisplay and exposes it as a HMDVRDevice
 */
function VRDisplayHMDDevice(display) {
  this.display = display;

  this.hardwareUnitId = display.displayId;
  this.deviceId = 'webvr-polyfill:HMD:' + display.displayId;
  this.deviceName = display.displayName + ' (HMD)';
}
VRDisplayHMDDevice.prototype = new HMDVRDevice();

VRDisplayHMDDevice.prototype.getEyeParameters = function(whichEye) {
  var eyeParameters = this.display.getEyeParameters(whichEye);

  return {
    currentFieldOfView: eyeParameters.fieldOfView,
    maximumFieldOfView: eyeParameters.fieldOfView,
    minimumFieldOfView: eyeParameters.fieldOfView,
    recommendedFieldOfView: eyeParameters.fieldOfView,
    eyeTranslation: { x: eyeParameters.offset[0], y: eyeParameters.offset[1], z: eyeParameters.offset[2] },
    renderRect: {
      x: (whichEye == 'right') ? eyeParameters.renderWidth : 0,
      y: 0,
      width: eyeParameters.renderWidth,
      height: eyeParameters.renderHeight
    }
  };
};

VRDisplayHMDDevice.prototype.setFieldOfView =
    function(opt_fovLeft, opt_fovRight, opt_zNear, opt_zFar) {
  // Not supported. getEyeParameters reports that the min, max, and recommended
  // FoV is all the same, so no adjustment can be made.
};

// TODO: Need to hook requestFullscreen to see if a wrapped VRDisplay was passed
// in as an option. If so we should prevent the default fullscreen behavior and
// call VRDisplay.requestPresent instead.

/**
 * Wraps a VRDisplay and exposes it as a PositionSensorVRDevice
 */
function VRDisplayPositionSensorDevice(display) {
  this.display = display;

  this.hardwareUnitId = display.displayId;
  this.deviceId = 'webvr-polyfill:PositionSensor: ' + display.displayId;
  this.deviceName = display.displayName + ' (PositionSensor)';
}
VRDisplayPositionSensorDevice.prototype = new PositionSensorVRDevice();

VRDisplayPositionSensorDevice.prototype.getState = function() {
  var pose = this.display.getPose();
  return {
    position: pose.position ? { x: pose.position[0], y: pose.position[1], z: pose.position[2] } : null,
    orientation: pose.orientation ? { x: pose.orientation[0], y: pose.orientation[1], z: pose.orientation[2], w: pose.orientation[3] } : null,
    linearVelocity: null,
    linearAcceleration: null,
    angularVelocity: null,
    angularAcceleration: null
  };
};

VRDisplayPositionSensorDevice.prototype.resetState = function() {
  return this.positionDevice.resetPose();
};


module.exports.VRDisplayHMDDevice = VRDisplayHMDDevice;
module.exports.VRDisplayPositionSensorDevice = VRDisplayPositionSensorDevice;


},{"./base.js":3}],10:[function(_dereq_,module,exports){
/**
 * TODO(smus): Implement coefficient inversion.
 */
function Distortion(coefficients) {
  this.coefficients = coefficients;
}

/**
 * Calculates the inverse distortion for a radius.
 * </p><p>
 * Allows to compute the original undistorted radius from a distorted one.
 * See also getApproximateInverseDistortion() for a faster but potentially
 * less accurate method.
 *
 * @param {Number} radius Distorted radius from the lens center in tan-angle units.
 * @return {Number} The undistorted radius in tan-angle units.
 */
Distortion.prototype.distortInverse = function(radius) {
  // Secant method.
  var r0 = 0;
  var r1 = 1;
  var dr0 = radius - this.distort(r0);
  while (Math.abs(r1 - r0) > 0.0001 /** 0.1mm */) {
    var dr1 = radius - this.distort(r1);
    var r2 = r1 - dr1 * ((r1 - r0) / (dr1 - dr0));
    r0 = r1;
    r1 = r2;
    dr0 = dr1;
  }
  return r1;
};

/**
 * Distorts a radius by its distortion factor from the center of the lenses.
 *
 * @param {Number} radius Radius from the lens center in tan-angle units.
 * @return {Number} The distorted radius in tan-angle units.
 */
Distortion.prototype.distort = function(radius) {
  var r2 = radius * radius;
  var ret = 0;
  for (var i = 0; i < this.coefficients.length; i++) {
    ret = r2 * (ret + this.coefficients[i]);
  }
  return (ret + 1) * radius;
};

// Functions below roughly ported from
// https://github.com/googlesamples/cardboard-unity/blob/master/Cardboard/Scripts/CardboardProfile.cs#L412

// Solves a small linear equation via destructive gaussian
// elimination and back substitution.  This isn't generic numeric
// code, it's just a quick hack to work with the generally
// well-behaved symmetric matrices for least-squares fitting.
// Not intended for reuse.
//
// @param a Input positive definite symmetrical matrix. Destroyed
//     during calculation.
// @param y Input right-hand-side values. Destroyed during calculation.
// @return Resulting x value vector.
//
Distortion.prototype.solveLinear_ = function(a, y) {
  var n = a.length;

  // Gaussian elimination (no row exchange) to triangular matrix.
  // The input matrix is a A^T A product which should be a positive
  // definite symmetrical matrix, and if I remember my linear
  // algebra right this implies that the pivots will be nonzero and
  // calculations sufficiently accurate without needing row
  // exchange.
  for (var j = 0; j < n - 1; ++j) {
    for (var k = j + 1; k < n; ++k) {
      var p = a[j][k] / a[j][j];
      for (var i = j + 1; i < n; ++i) {
        a[i][k] -= p * a[i][j];
      }
      y[k] -= p * y[j];
    }
  }
  // From this point on, only the matrix elements a[j][i] with i>=j are
  // valid. The elimination doesn't fill in eliminated 0 values.

  var x = new Array(n);

  // Back substitution.
  for (var j = n - 1; j >= 0; --j) {
    var v = y[j];
    for (var i = j + 1; i < n; ++i) {
      v -= a[i][j] * x[i];
    }
    x[j] = v / a[j][j];
  }

  return x;
};

// Solves a least-squares matrix equation.  Given the equation A * x = y, calculate the
// least-square fit x = inverse(A * transpose(A)) * transpose(A) * y.  The way this works
// is that, while A is typically not a square matrix (and hence not invertible), A * transpose(A)
// is always square.  That is:
//   A * x = y
//   transpose(A) * (A * x) = transpose(A) * y   <- multiply both sides by transpose(A)
//   (transpose(A) * A) * x = transpose(A) * y   <- associativity
//   x = inverse(transpose(A) * A) * transpose(A) * y  <- solve for x
// Matrix A's row count (first index) must match y's value count.  A's column count (second index)
// determines the length of the result vector x.
Distortion.prototype.solveLeastSquares_ = function(matA, vecY) {
  var i, j, k, sum;
  var numSamples = matA.length;
  var numCoefficients = matA[0].length;
  if (numSamples != vecY.Length) {
    throw new Error("Matrix / vector dimension mismatch");
  }

  // Calculate transpose(A) * A
  var matATA = new Array(numCoefficients);
  for (k = 0; k < numCoefficients; ++k) {
    matATA[k] = new Array(numCoefficients);
    for (j = 0; j < numCoefficients; ++j) {
      sum = 0;
      for (i = 0; i < numSamples; ++i) {
        sum += matA[j][i] * matA[k][i];
      }
      matATA[k][j] = sum;
    }
  }

  // Calculate transpose(A) * y
  var vecATY = new Array(numCoefficients);
  for (j = 0; j < numCoefficients; ++j) {
    sum = 0;
    for (i = 0; i < numSamples; ++i) {
      sum += matA[j][i] * vecY[i];
    }
    vecATY[j] = sum;
  }

  // Now solve (A * transpose(A)) * x = transpose(A) * y.
  return this.solveLinear_(matATA, vecATY);
};

/// Calculates an approximate inverse to the given radial distortion parameters.
Distortion.prototype.approximateInverse = function(maxRadius, numSamples) {
  maxRadius = maxRadius || 1;
  numSamples = numSamples || 100;
  var numCoefficients = 6;
  var i, j;

  // R + K1*R^3 + K2*R^5 = r, with R = rp = distort(r)
  // Repeating for numSamples:
  //   [ R0^3, R0^5 ] * [ K1 ] = [ r0 - R0 ]
  //   [ R1^3, R1^5 ]   [ K2 ]   [ r1 - R1 ]
  //   [ R2^3, R2^5 ]            [ r2 - R2 ]
  //   [ etc... ]                [ etc... ]
  // That is:
  //   matA * [K1, K2] = y
  // Solve:
  //   [K1, K2] = inverse(transpose(matA) * matA) * transpose(matA) * y
  var matA = new Array(numCoefficients);
  for (j = 0; j < numCoefficients; ++j) {
    matA[j] = new Array(numSamples);
  }
  var vecY = new Array(numSamples);

  for (i = 0; i < numSamples; ++i) {
    var r = maxRadius * (i + 1) / numSamples;
    var rp = this.distort(r);
    var v = rp;
    for (j = 0; j < numCoefficients; ++j) {
      v *= rp * rp;
      matA[j][i] = v;
    }
    vecY[i] = r - rp;
  }

  var inverseCoefficients = this.solveLeastSquares_(matA, vecY);

  return new Distortion(inverseCoefficients);
};

module.exports = Distortion;

},{}],11:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * DPDB cache.
 */
var DPDB_CACHE = {
  "format": 1,
  "last_updated": "2016-01-20T00:18:35Z",
  "devices": [

  {
    "type": "android",
    "rules": [
      { "mdmh": "asus/*/Nexus 7/*" },
      { "ua": "Nexus 7" }
    ],
    "dpi": [ 320.8, 323.0 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "asus/*/ASUS_Z00AD/*" },
      { "ua": "ASUS_Z00AD" }
    ],
    "dpi": [ 403.0, 404.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "HTC/*/HTC6435LVW/*" },
      { "ua": "HTC6435LVW" }
    ],
    "dpi": [ 449.7, 443.3 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "HTC/*/HTC One XL/*" },
      { "ua": "HTC One XL" }
    ],
    "dpi": [ 315.3, 314.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "htc/*/Nexus 9/*" },
      { "ua": "Nexus 9" }
    ],
    "dpi": 289.0,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "HTC/*/HTC One M9/*" },
      { "ua": "HTC One M9" }
    ],
    "dpi": [ 442.5, 443.3 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "HTC/*/HTC One_M8/*" },
      { "ua": "HTC One_M8" }
    ],
    "dpi": [ 449.7, 447.4 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "HTC/*/HTC One/*" },
      { "ua": "HTC One" }
    ],
    "dpi": 472.8,
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Huawei/*/Nexus 6P/*" },
      { "ua": "Nexus 6P" }
    ],
    "dpi": [ 515.1, 518.0 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/Nexus 5X/*" },
      { "ua": "Nexus 5X" }
    ],
    "dpi": [ 422.0, 419.9 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LGMS345/*" },
      { "ua": "LGMS345" }
    ],
    "dpi": [ 221.7, 219.1 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LG-D800/*" },
      { "ua": "LG-D800" }
    ],
    "dpi": [ 422.0, 424.1 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LG-D850/*" },
      { "ua": "LG-D850" }
    ],
    "dpi": [ 537.9, 541.9 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/VS985 4G/*" },
      { "ua": "VS985 4G" }
    ],
    "dpi": [ 537.9, 535.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/Nexus 5/*" },
      { "ua": "Nexus 5 " }
    ],
    "dpi": [ 442.4, 444.8 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/Nexus 4/*" },
      { "ua": "Nexus 4" }
    ],
    "dpi": [ 319.8, 318.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LG-P769/*" },
      { "ua": "LG-P769" }
    ],
    "dpi": [ 240.6, 247.5 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LGMS323/*" },
      { "ua": "LGMS323" }
    ],
    "dpi": [ 206.6, 204.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "LGE/*/LGLS996/*" },
      { "ua": "LGLS996" }
    ],
    "dpi": [ 403.4, 401.5 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Micromax/*/4560MMX/*" },
      { "ua": "4560MMX" }
    ],
    "dpi": [ 240.0, 219.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Micromax/*/A250/*" },
      { "ua": "Micromax A250" }
    ],
    "dpi": [ 480.0, 446.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Micromax/*/Micromax AQ4501/*" },
      { "ua": "Micromax AQ4501" }
    ],
    "dpi": 240.0,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/DROID RAZR/*" },
      { "ua": "DROID RAZR" }
    ],
    "dpi": [ 368.1, 256.7 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT830C/*" },
      { "ua": "XT830C" }
    ],
    "dpi": [ 254.0, 255.9 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1021/*" },
      { "ua": "XT1021" }
    ],
    "dpi": [ 254.0, 256.7 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1023/*" },
      { "ua": "XT1023" }
    ],
    "dpi": [ 254.0, 256.7 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1028/*" },
      { "ua": "XT1028" }
    ],
    "dpi": [ 326.6, 327.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1034/*" },
      { "ua": "XT1034" }
    ],
    "dpi": [ 326.6, 328.4 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1053/*" },
      { "ua": "XT1053" }
    ],
    "dpi": [ 315.3, 316.1 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1562/*" },
      { "ua": "XT1562" }
    ],
    "dpi": [ 403.4, 402.7 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/Nexus 6/*" },
      { "ua": "Nexus 6 " }
    ],
    "dpi": [ 494.3, 489.7 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1063/*" },
      { "ua": "XT1063" }
    ],
    "dpi": [ 295.0, 296.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1064/*" },
      { "ua": "XT1064" }
    ],
    "dpi": [ 295.0, 295.6 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1092/*" },
      { "ua": "XT1092" }
    ],
    "dpi": [ 422.0, 424.1 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "motorola/*/XT1095/*" },
      { "ua": "XT1095" }
    ],
    "dpi": [ 422.0, 423.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "OnePlus/*/A0001/*" },
      { "ua": "A0001" }
    ],
    "dpi": [ 403.4, 401.0 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "OnePlus/*/ONE E1005/*" },
      { "ua": "ONE E1005" }
    ],
    "dpi": [ 442.4, 441.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "OnePlus/*/ONE A2005/*" },
      { "ua": "ONE A2005" }
    ],
    "dpi": [ 391.9, 405.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "OPPO/*/X909/*" },
      { "ua": "X909" }
    ],
    "dpi": [ 442.4, 444.1 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9082/*" },
      { "ua": "GT-I9082" }
    ],
    "dpi": [ 184.7, 185.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G360P/*" },
      { "ua": "SM-G360P" }
    ],
    "dpi": [ 196.7, 205.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/Nexus S/*" },
      { "ua": "Nexus S" }
    ],
    "dpi": [ 234.5, 229.8 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9300/*" },
      { "ua": "GT-I9300" }
    ],
    "dpi": [ 304.8, 303.9 ],
    "bw": 5,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-T230NU/*" },
      { "ua": "SM-T230NU" }
    ],
    "dpi": 216.0,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SGH-T399/*" },
      { "ua": "SGH-T399" }
    ],
    "dpi": [ 217.7, 231.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-N9005/*" },
      { "ua": "SM-N9005" }
    ],
    "dpi": [ 386.4, 387.0 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SAMSUNG-SM-N900A/*" },
      { "ua": "SAMSUNG-SM-N900A" }
    ],
    "dpi": [ 386.4, 387.7 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9500/*" },
      { "ua": "GT-I9500" }
    ],
    "dpi": [ 442.5, 443.3 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9505/*" },
      { "ua": "GT-I9505" }
    ],
    "dpi": 439.4,
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G900F/*" },
      { "ua": "SM-G900F" }
    ],
    "dpi": [ 415.6, 431.6 ],
    "bw": 5,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G900M/*" },
      { "ua": "SM-G900M" }
    ],
    "dpi": [ 415.6, 431.6 ],
    "bw": 5,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G800F/*" },
      { "ua": "SM-G800F" }
    ],
    "dpi": 326.8,
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G906S/*" },
      { "ua": "SM-G906S" }
    ],
    "dpi": [ 562.7, 572.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9300/*" },
      { "ua": "GT-I9300" }
    ],
    "dpi": [ 306.7, 304.8 ],
    "bw": 5,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-T535/*" },
      { "ua": "SM-T535" }
    ],
    "dpi": [ 142.6, 136.4 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-N920C/*" },
      { "ua": "SM-N920C" }
    ],
    "dpi": [ 515.1, 518.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9300I/*" },
      { "ua": "GT-I9300I" }
    ],
    "dpi": [ 304.8, 305.8 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-I9195/*" },
      { "ua": "GT-I9195" }
    ],
    "dpi": [ 249.4, 256.7 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SPH-L520/*" },
      { "ua": "SPH-L520" }
    ],
    "dpi": [ 249.4, 255.9 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SAMSUNG-SGH-I717/*" },
      { "ua": "SAMSUNG-SGH-I717" }
    ],
    "dpi": 285.8,
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SPH-D710/*" },
      { "ua": "SPH-D710" }
    ],
    "dpi": [ 217.7, 204.2 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/GT-N7100/*" },
      { "ua": "GT-N7100" }
    ],
    "dpi": 265.1,
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SCH-I605/*" },
      { "ua": "SCH-I605" }
    ],
    "dpi": 265.1,
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/Galaxy Nexus/*" },
      { "ua": "Galaxy Nexus" }
    ],
    "dpi": [ 315.3, 314.2 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-N910H/*" },
      { "ua": "SM-N910H" }
    ],
    "dpi": [ 515.1, 518.0 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-N910C/*" },
      { "ua": "SM-N910C" }
    ],
    "dpi": [ 515.2, 520.2 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G130M/*" },
      { "ua": "SM-G130M" }
    ],
    "dpi": [ 165.9, 164.8 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G928I/*" },
      { "ua": "SM-G928I" }
    ],
    "dpi": [ 515.1, 518.4 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G920F/*" },
      { "ua": "SM-G920F" }
    ],
    "dpi": 580.6,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G920P/*" },
      { "ua": "SM-G920P" }
    ],
    "dpi": [ 522.5, 577.0 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G925F/*" },
      { "ua": "SM-G925F" }
    ],
    "dpi": 580.6,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "samsung/*/SM-G925V/*" },
      { "ua": "SM-G925V" }
    ],
    "dpi": [ 522.5, 576.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Sony/*/C6903/*" },
      { "ua": "C6903" }
    ],
    "dpi": [ 442.5, 443.3 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Sony/*/D6653/*" },
      { "ua": "D6653" }
    ],
    "dpi": [ 428.6, 427.6 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Sony/*/E6653/*" },
      { "ua": "E6653" }
    ],
    "dpi": [ 428.6, 425.7 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Sony/*/E6853/*" },
      { "ua": "E6853" }
    ],
    "dpi": [ 403.4, 401.9 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "Sony/*/SGP321/*" },
      { "ua": "SGP321" }
    ],
    "dpi": [ 224.7, 224.1 ],
    "bw": 3,
    "ac": 500
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "TCT/*/ALCATEL ONE TOUCH Fierce/*" },
      { "ua": "ALCATEL ONE TOUCH Fierce" }
    ],
    "dpi": [ 240.0, 247.5 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "THL/*/thl 5000/*" },
      { "ua": "thl 5000" }
    ],
    "dpi": [ 480.0, 443.3 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "android",
    "rules": [
      { "mdmh": "ZTE/*/ZTE Blade L2/*" },
      { "ua": "ZTE Blade L2" }
    ],
    "dpi": 240.0,
    "bw": 3,
    "ac": 500
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 640, 960 ] } ],
    "dpi": [ 325.1, 328.4 ],
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 640, 960 ] } ],
    "dpi": [ 325.1, 328.4 ],
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 640, 1136 ] } ],
    "dpi": [ 317.1, 320.2 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 640, 1136 ] } ],
    "dpi": [ 317.1, 320.2 ],
    "bw": 3,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 750, 1334 ] } ],
    "dpi": 326.4,
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 750, 1334 ] } ],
    "dpi": 326.4,
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 1242, 2208 ] } ],
    "dpi": [ 453.6, 458.4 ],
    "bw": 4,
    "ac": 1000
  },

  {
    "type": "ios",
    "rules": [ { "res": [ 1242, 2208 ] } ],
    "dpi": [ 453.6, 458.4 ],
    "bw": 4,
    "ac": 1000
  }
]};

module.exports = DPDB_CACHE;

},{}],12:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Offline cache of the DPDB, to be used until we load the online one (and
// as a fallback in case we can't load the online one).
var DPDB_CACHE = _dereq_('./dpdb-cache.js');
var Util = _dereq_('../util.js');

// Online DPDB URL.
var ONLINE_DPDB_URL = 'https://storage.googleapis.com/cardboard-dpdb/dpdb.json';

/**
 * Calculates device parameters based on the DPDB (Device Parameter Database).
 * Initially, uses the cached DPDB values.
 *
 * If fetchOnline == true, then this object tries to fetch the online version
 * of the DPDB and updates the device info if a better match is found.
 * Calls the onDeviceParamsUpdated callback when there is an update to the
 * device information.
 */
function Dpdb(fetchOnline, onDeviceParamsUpdated) {
  // Start with the offline DPDB cache while we are loading the real one.
  this.dpdb = DPDB_CACHE;

  // Calculate device params based on the offline version of the DPDB.
  this.recalculateDeviceParams_();

  // XHR to fetch online DPDB file, if requested.
  if (fetchOnline) {
    // Set the callback.
    this.onDeviceParamsUpdated = onDeviceParamsUpdated;

    var xhr = new XMLHttpRequest();
    var obj = this;
    xhr.open('GET', ONLINE_DPDB_URL, true);
    xhr.addEventListener('load', function() {
      obj.loading = false;
      if (xhr.status >= 200 && xhr.status <= 299) {
        // Success.
        obj.dpdb = JSON.parse(xhr.response);
        obj.recalculateDeviceParams_();
      } else {
        // Error loading the DPDB.
        console.error('Error loading online DPDB!');
      }
    });
    xhr.send();
  }
}

// Returns the current device parameters.
Dpdb.prototype.getDeviceParams = function() {
  return this.deviceParams;
};

// Recalculates this device's parameters based on the DPDB.
Dpdb.prototype.recalculateDeviceParams_ = function() {
  var newDeviceParams = this.calcDeviceParams_();
  if (newDeviceParams) {
    this.deviceParams = newDeviceParams;
    // Invoke callback, if it is set.
    if (this.onDeviceParamsUpdated) {
      this.onDeviceParamsUpdated(this.deviceParams);
    }
  } else {
    console.error('Failed to recalculate device parameters.');
  }
};

// Returns a DeviceParams object that represents the best guess as to this
// device's parameters. Can return null if the device does not match any
// known devices.
Dpdb.prototype.calcDeviceParams_ = function() {
  var db = this.dpdb; // shorthand
  if (!db) {
    console.error('DPDB not available.');
    return null;
  }
  if (db.format != 1) {
    console.error('DPDB has unexpected format version.');
    return null;
  }
  if (!db.devices || !db.devices.length) {
    console.error('DPDB does not have a devices section.');
    return null;
  }

  // Get the actual user agent and screen dimensions in pixels.
  var userAgent = navigator.userAgent || navigator.vendor || window.opera;
  var width = Util.getScreenWidth();
  var height = Util.getScreenHeight();

  if (!db.devices) {
    console.error('DPDB has no devices section.');
    return null;
  }

  for (var i = 0; i < db.devices.length; i++) {
    var device = db.devices[i];
    if (!device.rules) {
      console.warn('Device[' + i + '] has no rules section.');
      continue;
    }

    if (device.type != 'ios' && device.type != 'android') {
      console.warn('Device[' + i + '] has invalid type.');
      continue;
    }

    // See if this device is of the appropriate type.
    if (Util.isIOS() != (device.type == 'ios')) continue;

    // See if this device matches any of the rules:
    var matched = false;
    for (var j = 0; j < device.rules.length; j++) {
      var rule = device.rules[j];
      if (this.matchRule_(rule, userAgent, width, height)) {
        matched = true;
        break;
      }
    }
    if (!matched) continue;

    // device.dpi might be an array of [ xdpi, ydpi] or just a scalar.
    var xdpi = device.dpi[0] || device.dpi;
    var ydpi = device.dpi[1] || device.dpi;

    return new DeviceParams({ xdpi: xdpi, ydpi: ydpi, bevelMm: device.bw });
  }

  console.warn('No DPDB device match.');
  return null;
};

Dpdb.prototype.matchRule_ = function(rule, ua, screenWidth, screenHeight) {
  // We can only match 'ua' and 'res' rules, not other types like 'mdmh'
  // (which are meant for native platforms).
  if (!rule.ua && !rule.res) return false;

  // If our user agent string doesn't contain the indicated user agent string,
  // the match fails.
  if (rule.ua && ua.indexOf(rule.ua) < 0) return false;

  // If the rule specifies screen dimensions that don't correspond to ours,
  // the match fails.
  if (rule.res) {
    if (!rule.res[0] || !rule.res[1]) return false;
    var resX = rule.res[0];
    var resY = rule.res[1];
    // Compare min and max so as to make the order not matter, i.e., it should
    // be true that 640x480 == 480x640.
    if (Math.min(screenWidth, screenHeight) != Math.min(resX, resY) ||
        (Math.max(screenWidth, screenHeight) != Math.max(resX, resY))) {
      return false;
    }
  }

  return true;
}

function DeviceParams(params) {
  this.xdpi = params.xdpi;
  this.ydpi = params.ydpi;
  this.bevelMm = params.bevelMm;
}

module.exports = Dpdb;

},{"../util.js":22,"./dpdb-cache.js":11}],13:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var Util = _dereq_('./util.js');
var WebVRPolyfill = _dereq_('./webvr-polyfill.js').WebVRPolyfill;

// Initialize a WebVRConfig just in case.
window.WebVRConfig = Util.extend({
  // Forces availability of VR mode, even for non-mobile devices.
  FORCE_ENABLE_VR: false,

  // Complementary filter coefficient. 0 for accelerometer, 1 for gyro.
  K_FILTER: 0.98,

  // How far into the future to predict during fast motion (in seconds).
  PREDICTION_TIME_S: 0.040,

  // Flag to enable touch panner. In case you have your own touch controls.
  TOUCH_PANNER_DISABLED: true,

  // Flag to disabled the UI in VR Mode.
  CARDBOARD_UI_DISABLED: false, // Default: false

  // Flag to disable the instructions to rotate your device.
  ROTATE_INSTRUCTIONS_DISABLED: false, // Default: false.

  // Enable yaw panning only, disabling roll and pitch. This can be useful
  // for panoramas with nothing interesting above or below.
  YAW_ONLY: false,

  // To disable keyboard and mouse controls, if you want to use your own
  // implementation.
  MOUSE_KEYBOARD_CONTROLS_DISABLED: false,

  // Prevent the polyfill from initializing immediately. Requires the app
  // to call InitializeWebVRPolyfill() before it can be used.
  DEFER_INITIALIZATION: false,

  // Enable the deprecated version of the API (navigator.getVRDevices).
  ENABLE_DEPRECATED_API: false,

  // Scales the recommended buffer size reported by WebVR, which can improve
  // performance.
  // UPDATE(2016-05-03): Setting this to 0.5 by default since 1.0 does not
  // perform well on many mobile devices.
  BUFFER_SCALE: 0.5,

  // Allow VRDisplay.submitFrame to change gl bindings, which is more
  // efficient if the application code will re-bind its resources on the
  // next frame anyway. This has been seen to cause rendering glitches with
  // THREE.js.
  // Dirty bindings include: gl.FRAMEBUFFER_BINDING, gl.CURRENT_PROGRAM,
  // gl.ARRAY_BUFFER_BINDING, gl.ELEMENT_ARRAY_BUFFER_BINDING,
  // and gl.TEXTURE_BINDING_2D for texture unit 0.
  DIRTY_SUBMIT_FRAME_BINDINGS: false,

  // When set to true, this will cause a polyfilled VRDisplay to always be
  // appended to the list returned by navigator.getVRDisplays(), even if that
  // list includes a native VRDisplay.
  ALWAYS_APPEND_POLYFILL_DISPLAY: false
}, window.WebVRConfig);

if (!window.WebVRConfig.DEFER_INITIALIZATION) {
  new WebVRPolyfill();
} else {
  window.InitializeWebVRPolyfill = function() {
    new WebVRPolyfill();
  }
}

},{"./util.js":22,"./webvr-polyfill.js":25}],14:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var MathUtil = window.MathUtil || {};

MathUtil.degToRad = Math.PI / 180;
MathUtil.radToDeg = 180 / Math.PI;

// Some minimal math functionality borrowed from THREE.Math and stripped down
// for the purposes of this library.


MathUtil.Vector2 = function ( x, y ) {
  this.x = x || 0;
  this.y = y || 0;
};

MathUtil.Vector2.prototype = {
  constructor: MathUtil.Vector2,

  set: function ( x, y ) {
    this.x = x;
    this.y = y;

    return this;
  },

  copy: function ( v ) {
    this.x = v.x;
    this.y = v.y;

    return this;
  },

  subVectors: function ( a, b ) {
    this.x = a.x - b.x;
    this.y = a.y - b.y;

    return this;
  },
};

MathUtil.Vector3 = function ( x, y, z ) {
  this.x = x || 0;
  this.y = y || 0;
  this.z = z || 0;
};

MathUtil.Vector3.prototype = {
  constructor: MathUtil.Vector3,

  set: function ( x, y, z ) {
    this.x = x;
    this.y = y;
    this.z = z;

    return this;
  },

  copy: function ( v ) {
    this.x = v.x;
    this.y = v.y;
    this.z = v.z;

    return this;
  },

  length: function () {
    return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
  },

  normalize: function () {
    var scalar = this.length();

    if ( scalar !== 0 ) {
      var invScalar = 1 / scalar;

      this.multiplyScalar(invScalar);
    } else {
      this.x = 0;
      this.y = 0;
      this.z = 0;
    }

    return this;
  },

  multiplyScalar: function ( scalar ) {
    this.x *= scalar;
    this.y *= scalar;
    this.z *= scalar;
  },

  applyQuaternion: function ( q ) {
    var x = this.x;
    var y = this.y;
    var z = this.z;

    var qx = q.x;
    var qy = q.y;
    var qz = q.z;
    var qw = q.w;

    // calculate quat * vector
    var ix =  qw * x + qy * z - qz * y;
    var iy =  qw * y + qz * x - qx * z;
    var iz =  qw * z + qx * y - qy * x;
    var iw = - qx * x - qy * y - qz * z;

    // calculate result * inverse quat
    this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
    this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
    this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;

    return this;
  },

  dot: function ( v ) {
    return this.x * v.x + this.y * v.y + this.z * v.z;
  },

  crossVectors: function ( a, b ) {
    var ax = a.x, ay = a.y, az = a.z;
    var bx = b.x, by = b.y, bz = b.z;

    this.x = ay * bz - az * by;
    this.y = az * bx - ax * bz;
    this.z = ax * by - ay * bx;

    return this;
  },
};

MathUtil.Quaternion = function ( x, y, z, w ) {
  this.x = x || 0;
  this.y = y || 0;
  this.z = z || 0;
  this.w = ( w !== undefined ) ? w : 1;
};

MathUtil.Quaternion.prototype = {
  constructor: MathUtil.Quaternion,

  set: function ( x, y, z, w ) {
    this.x = x;
    this.y = y;
    this.z = z;
    this.w = w;

    return this;
  },

  copy: function ( quaternion ) {
    this.x = quaternion.x;
    this.y = quaternion.y;
    this.z = quaternion.z;
    this.w = quaternion.w;

    return this;
  },

  setFromEulerXYZ: function( x, y, z ) {
    var c1 = Math.cos( x / 2 );
    var c2 = Math.cos( y / 2 );
    var c3 = Math.cos( z / 2 );
    var s1 = Math.sin( x / 2 );
    var s2 = Math.sin( y / 2 );
    var s3 = Math.sin( z / 2 );

    this.x = s1 * c2 * c3 + c1 * s2 * s3;
    this.y = c1 * s2 * c3 - s1 * c2 * s3;
    this.z = c1 * c2 * s3 + s1 * s2 * c3;
    this.w = c1 * c2 * c3 - s1 * s2 * s3;

    return this;
  },

  setFromEulerYXZ: function( x, y, z ) {
    var c1 = Math.cos( x / 2 );
    var c2 = Math.cos( y / 2 );
    var c3 = Math.cos( z / 2 );
    var s1 = Math.sin( x / 2 );
    var s2 = Math.sin( y / 2 );
    var s3 = Math.sin( z / 2 );

    this.x = s1 * c2 * c3 + c1 * s2 * s3;
    this.y = c1 * s2 * c3 - s1 * c2 * s3;
    this.z = c1 * c2 * s3 - s1 * s2 * c3;
    this.w = c1 * c2 * c3 + s1 * s2 * s3;

    return this;
  },

  setFromAxisAngle: function ( axis, angle ) {
    // http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
    // assumes axis is normalized

    var halfAngle = angle / 2, s = Math.sin( halfAngle );

    this.x = axis.x * s;
    this.y = axis.y * s;
    this.z = axis.z * s;
    this.w = Math.cos( halfAngle );

    return this;
  },

  multiply: function ( q ) {
    return this.multiplyQuaternions( this, q );
  },

  multiplyQuaternions: function ( a, b ) {
    // from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

    var qax = a.x, qay = a.y, qaz = a.z, qaw = a.w;
    var qbx = b.x, qby = b.y, qbz = b.z, qbw = b.w;

    this.x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
    this.y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
    this.z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
    this.w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

    return this;
  },

  inverse: function () {
    this.x *= -1;
    this.y *= -1;
    this.z *= -1;

    this.normalize();

    return this;
  },

  normalize: function () {
    var l = Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

    if ( l === 0 ) {
      this.x = 0;
      this.y = 0;
      this.z = 0;
      this.w = 1;
    } else {
      l = 1 / l;

      this.x = this.x * l;
      this.y = this.y * l;
      this.z = this.z * l;
      this.w = this.w * l;
    }

    return this;
  },

  slerp: function ( qb, t ) {
    if ( t === 0 ) return this;
    if ( t === 1 ) return this.copy( qb );

    var x = this.x, y = this.y, z = this.z, w = this.w;

    // http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

    var cosHalfTheta = w * qb.w + x * qb.x + y * qb.y + z * qb.z;

    if ( cosHalfTheta < 0 ) {
      this.w = - qb.w;
      this.x = - qb.x;
      this.y = - qb.y;
      this.z = - qb.z;

      cosHalfTheta = - cosHalfTheta;
    } else {
      this.copy( qb );
    }

    if ( cosHalfTheta >= 1.0 ) {
      this.w = w;
      this.x = x;
      this.y = y;
      this.z = z;

      return this;
    }

    var halfTheta = Math.acos( cosHalfTheta );
    var sinHalfTheta = Math.sqrt( 1.0 - cosHalfTheta * cosHalfTheta );

    if ( Math.abs( sinHalfTheta ) < 0.001 ) {
      this.w = 0.5 * ( w + this.w );
      this.x = 0.5 * ( x + this.x );
      this.y = 0.5 * ( y + this.y );
      this.z = 0.5 * ( z + this.z );

      return this;
    }

    var ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
    ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

    this.w = ( w * ratioA + this.w * ratioB );
    this.x = ( x * ratioA + this.x * ratioB );
    this.y = ( y * ratioA + this.y * ratioB );
    this.z = ( z * ratioA + this.z * ratioB );

    return this;
  },

  setFromUnitVectors: function () {
    // http://lolengine.net/blog/2014/02/24/quaternion-from-two-vectors-final
    // assumes direction vectors vFrom and vTo are normalized

    var v1, r;
    var EPS = 0.000001;

    return function ( vFrom, vTo ) {
      if ( v1 === undefined ) v1 = new MathUtil.Vector3();

      r = vFrom.dot( vTo ) + 1;

      if ( r < EPS ) {
        r = 0;

        if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
          v1.set( - vFrom.y, vFrom.x, 0 );
        } else {
          v1.set( 0, - vFrom.z, vFrom.y );
        }
      } else {
        v1.crossVectors( vFrom, vTo );
      }

      this.x = v1.x;
      this.y = v1.y;
      this.z = v1.z;
      this.w = r;

      this.normalize();

      return this;
    }
  }(),
};

module.exports = MathUtil;

},{}],15:[function(_dereq_,module,exports){
/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var VRDisplay = _dereq_('./base.js').VRDisplay;
var MathUtil = _dereq_('./math-util.js');
var Util = _dereq_('./util.js');

// How much to rotate per key stroke.
var KEY_SPEED = 0.15;
var KEY_ANIMATION_DURATION = 80;

// How much to rotate for mouse events.
var MOUSE_SPEED_X = 0.5;
var MOUSE_SPEED_Y = 0.3;

/**
 * VRDisplay based on mouse and keyboard input. Designed for desktops/laptops
 * where orientation events aren't supported. Cannot present.
 */
function MouseKeyboardVRDisplay() {
  this.displayName = 'Mouse and Keyboard VRDisplay (webvr-polyfill)';

  this.capabilities.hasOrientation = true;

  // Attach to mouse and keyboard events.
  window.addEventListener('keydown', this.onKeyDown_.bind(this));
  window.addEventListener('mousemove', this.onMouseMove_.bind(this));
  window.addEventListener('mousedown', this.onMouseDown_.bind(this));
  window.addEventListener('mouseup', this.onMouseUp_.bind(this));

  // "Private" members.
  this.phi_ = 0;
  this.theta_ = 0;

  // Variables for keyboard-based rotation animation.
  this.targetAngle_ = null;
  this.angleAnimation_ = null;

  // State variables for calculations.
  this.orientation_ = new MathUtil.Quaternion();

  // Variables for mouse-based rotation.
  this.rotateStart_ = new MathUtil.Vector2();
  this.rotateEnd_ = new MathUtil.Vector2();
  this.rotateDelta_ = new MathUtil.Vector2();
  this.isDragging_ = false;

  this.orientationOut_ = new Float32Array(4);
}
MouseKeyboardVRDisplay.prototype = new VRDisplay();

MouseKeyboardVRDisplay.prototype.getImmediatePose = function() {
  this.orientation_.setFromEulerYXZ(this.phi_, this.theta_, 0);

  this.orientationOut_[0] = this.orientation_.x;
  this.orientationOut_[1] = this.orientation_.y;
  this.orientationOut_[2] = this.orientation_.z;
  this.orientationOut_[3] = this.orientation_.w;

  return {
    position: null,
    orientation: this.orientationOut_,
    linearVelocity: null,
    linearAcceleration: null,
    angularVelocity: null,
    angularAcceleration: null
  };
};

MouseKeyboardVRDisplay.prototype.onKeyDown_ = function(e) {
  // Track WASD and arrow keys.
  if (e.keyCode == 38) { // Up key.
    this.animatePhi_(this.phi_ + KEY_SPEED);
  } else if (e.keyCode == 39) { // Right key.
    this.animateTheta_(this.theta_ - KEY_SPEED);
  } else if (e.keyCode == 40) { // Down key.
    this.animatePhi_(this.phi_ - KEY_SPEED);
  } else if (e.keyCode == 37) { // Left key.
    this.animateTheta_(this.theta_ + KEY_SPEED);
  }
};

MouseKeyboardVRDisplay.prototype.animateTheta_ = function(targetAngle) {
  this.animateKeyTransitions_('theta_', targetAngle);
};

MouseKeyboardVRDisplay.prototype.animatePhi_ = function(targetAngle) {
  // Prevent looking too far up or down.
  targetAngle = Util.clamp(targetAngle, -Math.PI/2, Math.PI/2);
  this.animateKeyTransitions_('phi_', targetAngle);
};

/**
 * Start an animation to transition an angle from one value to another.
 */
MouseKeyboardVRDisplay.prototype.animateKeyTransitions_ = function(angleName, targetAngle) {
  // If an animation is currently running, cancel it.
  if (this.angleAnimation_) {
    cancelAnimationFrame(this.angleAnimation_);
  }
  var startAngle = this[angleName];
  var startTime = new Date();
  // Set up an interval timer to perform the animation.
  this.angleAnimation_ = requestAnimationFrame(function animate() {
    // Once we're finished the animation, we're done.
    var elapsed = new Date() - startTime;
    if (elapsed >= KEY_ANIMATION_DURATION) {
      this[angleName] = targetAngle;
      cancelAnimationFrame(this.angleAnimation_);
      return;
    }
    // loop with requestAnimationFrame
    this.angleAnimation_ = requestAnimationFrame(animate.bind(this))
    // Linearly interpolate the angle some amount.
    var percent = elapsed / KEY_ANIMATION_DURATION;
    this[angleName] = startAngle + (targetAngle - startAngle) * percent;
  }.bind(this));
};

MouseKeyboardVRDisplay.prototype.onMouseDown_ = function(e) {
  this.rotateStart_.set(e.clientX, e.clientY);
  this.isDragging_ = true;
};

// Very similar to https://gist.github.com/mrflix/8351020
MouseKeyboardVRDisplay.prototype.onMouseMove_ = function(e) {
  if (!this.isDragging_ && !this.isPointerLocked_()) {
    return;
  }
  // Support pointer lock API.
  if (this.isPointerLocked_()) {
    var movementX = e.movementX || e.mozMovementX || 0;
    var movementY = e.movementY || e.mozMovementY || 0;
    this.rotateEnd_.set(this.rotateStart_.x - movementX, this.rotateStart_.y - movementY);
  } else {
    this.rotateEnd_.set(e.clientX, e.clientY);
  }
  // Calculate how much we moved in mouse space.
  this.rotateDelta_.subVectors(this.rotateEnd_, this.rotateStart_);
  this.rotateStart_.copy(this.rotateEnd_);

  // Keep track of the cumulative euler angles.
  this.phi_ += 2 * Math.PI * this.rotateDelta_.y / screen.height * MOUSE_SPEED_Y;
  this.theta_ += 2 * Math.PI * this.rotateDelta_.x / screen.width * MOUSE_SPEED_X;

  // Prevent looking too far up or down.
  this.phi_ = Util.clamp(this.phi_, -Math.PI/2, Math.PI/2);
};

MouseKeyboardVRDisplay.prototype.onMouseUp_ = function(e) {
  this.isDragging_ = false;
};

MouseKeyboardVRDisplay.prototype.isPointerLocked_ = function() {
  var el = document.pointerLockElement || document.mozPointerLockElement ||
      document.webkitPointerLockElement;
  return el !== undefined;
};

MouseKeyboardVRDisplay.prototype.resetPose = function() {
  this.phi_ = 0;
  this.theta_ = 0;
};

module.exports = MouseKeyboardVRDisplay;

},{"./base.js":3,"./math-util.js":14,"./util.js":22}],16:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Util = _dereq_('./util.js');

function RotateInstructions() {
  this.loadIcon_();

  var overlay = document.createElement('div');
  var s = overlay.style;
  s.position = 'fixed';
  s.top = 0;
  s.right = 0;
  s.bottom = 0;
  s.left = 0;
  s.backgroundColor = 'gray';
  s.fontFamily = 'sans-serif';
  // Force this to be above the fullscreen canvas, which is at zIndex: 999999.
  s.zIndex = 1000000;

  var img = document.createElement('img');
  img.src = this.icon;
  var s = img.style;
  s.marginLeft = '25%';
  s.marginTop = '25%';
  s.width = '50%';
  overlay.appendChild(img);

  var text = document.createElement('div');
  var s = text.style;
  s.textAlign = 'center';
  s.fontSize = '16px';
  s.lineHeight = '24px';
  s.margin = '24px 25%';
  s.width = '50%';
  text.innerHTML = 'Place your phone into your Cardboard viewer.';
  overlay.appendChild(text);

  var snackbar = document.createElement('div');
  var s = snackbar.style;
  s.backgroundColor = '#CFD8DC';
  s.position = 'fixed';
  s.bottom = 0;
  s.width = '100%';
  s.height = '48px';
  s.padding = '14px 24px';
  s.boxSizing = 'border-box';
  s.color = '#656A6B';
  overlay.appendChild(snackbar);

  var snackbarText = document.createElement('div');
  snackbarText.style.float = 'left';
  snackbarText.innerHTML = 'No Cardboard viewer?';

  var snackbarButton = document.createElement('a');
  snackbarButton.href = 'https://www.google.com/get/cardboard/get-cardboard/';
  snackbarButton.innerHTML = 'get one';
  snackbarButton.target = '_blank';
  var s = snackbarButton.style;
  s.float = 'right';
  s.fontWeight = 600;
  s.textTransform = 'uppercase';
  s.borderLeft = '1px solid gray';
  s.paddingLeft = '24px';
  s.textDecoration = 'none';
  s.color = '#656A6B';

  snackbar.appendChild(snackbarText);
  snackbar.appendChild(snackbarButton);

  this.overlay = overlay;
  this.text = text;

  this.hide();
}

RotateInstructions.prototype.show = function(parent) {
  if (!parent && !this.overlay.parentElement) {
    document.body.appendChild(this.overlay);
  } else if (parent) {
    if (this.overlay.parentElement && this.overlay.parentElement != parent)
      this.overlay.parentElement.removeChild(this.overlay);

    parent.appendChild(this.overlay);
  }

  this.overlay.style.display = 'block';

  var img = this.overlay.querySelector('img');
  var s = img.style;

  if (Util.isLandscapeMode()) {
    s.width = '20%';
    s.marginLeft = '40%';
    s.marginTop = '3%';
  } else {
    s.width = '50%';
    s.marginLeft = '25%';
    s.marginTop = '25%';
  }
};

RotateInstructions.prototype.hide = function() {
  this.overlay.style.display = 'none';
};

RotateInstructions.prototype.showTemporarily = function(ms, parent) {
  this.show(parent);
  this.timer = setTimeout(this.hide.bind(this), ms);
};

RotateInstructions.prototype.disableShowTemporarily = function() {
  clearTimeout(this.timer);
};

RotateInstructions.prototype.update = function() {
  this.disableShowTemporarily();
  // In portrait VR mode, tell the user to rotate to landscape. Otherwise, hide
  // the instructions.
  if (!Util.isLandscapeMode() && Util.isMobile()) {
    this.show();
  } else {
    this.hide();
  }
};

RotateInstructions.prototype.loadIcon_ = function() {
  // Encoded asset_src/rotate-instructions.svg
  this.icon = Util.base64('image/svg+xml', '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="198px" height="240px" viewBox="0 0 198 240" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
    <!-- Generator: Sketch 3.3.3 (12081) - http://www.bohemiancoding.com/sketch -->
    <title>transition</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
        <g id="transition" sketch:type="MSArtboardGroup">
            <g id="Imported-Layers-Copy-4-+-Imported-Layers-Copy-+-Imported-Layers-Copy-2-Copy" sketch:type="MSLayerGroup">
                <g id="Imported-Layers-Copy-4" transform="translate(0.000000, 107.000000)" sketch:type="MSShapeGroup">
                    <path d="M149.625,2.527 C149.625,2.527 155.805,6.096 156.362,6.418 L156.362,7.304 C156.362,7.481 156.375,7.664 156.4,7.853 C156.41,7.934 156.42,8.015 156.427,8.095 C156.567,9.51 157.401,11.093 158.532,12.094 L164.252,17.156 L164.333,17.066 C164.333,17.066 168.715,14.536 169.568,14.042 C171.025,14.883 195.538,29.035 195.538,29.035 L195.538,83.036 C195.538,83.807 195.152,84.253 194.59,84.253 C194.357,84.253 194.095,84.177 193.818,84.017 L169.851,70.179 L169.837,70.203 L142.515,85.978 L141.665,84.655 C136.934,83.126 131.917,81.915 126.714,81.045 C126.709,81.06 126.707,81.069 126.707,81.069 L121.64,98.03 L113.749,102.586 L113.712,102.523 L113.712,130.113 C113.712,130.885 113.326,131.33 112.764,131.33 C112.532,131.33 112.269,131.254 111.992,131.094 L69.519,106.572 C68.569,106.023 67.799,104.695 67.799,103.605 L67.799,102.57 L67.778,102.617 C67.27,102.393 66.648,102.249 65.962,102.218 C65.875,102.214 65.788,102.212 65.701,102.212 C65.606,102.212 65.511,102.215 65.416,102.219 C65.195,102.229 64.974,102.235 64.754,102.235 C64.331,102.235 63.911,102.216 63.498,102.178 C61.843,102.025 60.298,101.578 59.094,100.882 L12.518,73.992 L12.523,74.004 L2.245,55.254 C1.244,53.427 2.004,51.038 3.943,49.918 L59.954,17.573 C60.626,17.185 61.35,17.001 62.053,17.001 C63.379,17.001 64.625,17.66 65.28,18.854 L65.285,18.851 L65.512,19.264 L65.506,19.268 C65.909,20.003 66.405,20.68 66.983,21.286 L67.26,21.556 C69.174,23.406 71.728,24.357 74.373,24.357 C76.322,24.357 78.321,23.84 80.148,22.785 C80.161,22.785 87.467,18.566 87.467,18.566 C88.139,18.178 88.863,17.994 89.566,17.994 C90.892,17.994 92.138,18.652 92.792,19.847 L96.042,25.775 L96.064,25.757 L102.849,29.674 L102.744,29.492 L149.625,2.527 M149.625,0.892 C149.343,0.892 149.062,0.965 148.81,1.11 L102.641,27.666 L97.231,24.542 L94.226,19.061 C93.313,17.394 91.527,16.359 89.566,16.358 C88.555,16.358 87.546,16.632 86.649,17.15 C83.878,18.75 79.687,21.169 79.374,21.345 C79.359,21.353 79.345,21.361 79.33,21.369 C77.798,22.254 76.084,22.722 74.373,22.722 C72.081,22.722 69.959,21.89 68.397,20.38 L68.145,20.135 C67.706,19.672 67.323,19.156 67.006,18.601 C66.988,18.559 66.968,18.519 66.946,18.479 L66.719,18.065 C66.69,18.012 66.658,17.96 66.624,17.911 C65.686,16.337 63.951,15.366 62.053,15.366 C61.042,15.366 60.033,15.64 59.136,16.158 L3.125,48.502 C0.426,50.061 -0.613,53.442 0.811,56.04 L11.089,74.79 C11.266,75.113 11.537,75.353 11.85,75.494 L58.276,102.298 C59.679,103.108 61.433,103.63 63.348,103.806 C63.812,103.848 64.285,103.87 64.754,103.87 C65,103.87 65.249,103.864 65.494,103.852 C65.563,103.849 65.632,103.847 65.701,103.847 C65.764,103.847 65.828,103.849 65.89,103.852 C65.986,103.856 66.08,103.863 66.173,103.874 C66.282,105.467 67.332,107.197 68.702,107.988 L111.174,132.51 C111.698,132.812 112.232,132.965 112.764,132.965 C114.261,132.965 115.347,131.765 115.347,130.113 L115.347,103.551 L122.458,99.446 C122.819,99.237 123.087,98.898 123.207,98.498 L127.865,82.905 C132.279,83.702 136.557,84.753 140.607,86.033 L141.14,86.862 C141.451,87.346 141.977,87.613 142.516,87.613 C142.794,87.613 143.076,87.542 143.333,87.393 L169.865,72.076 L193,85.433 C193.523,85.735 194.058,85.888 194.59,85.888 C196.087,85.888 197.173,84.689 197.173,83.036 L197.173,29.035 C197.173,28.451 196.861,27.911 196.355,27.619 C196.355,27.619 171.843,13.467 170.385,12.626 C170.132,12.48 169.85,12.407 169.568,12.407 C169.285,12.407 169.002,12.481 168.749,12.627 C168.143,12.978 165.756,14.357 164.424,15.125 L159.615,10.87 C158.796,10.145 158.154,8.937 158.054,7.934 C158.045,7.837 158.034,7.739 158.021,7.64 C158.005,7.523 157.998,7.41 157.998,7.304 L157.998,6.418 C157.998,5.834 157.686,5.295 157.181,5.002 C156.624,4.68 150.442,1.111 150.442,1.111 C150.189,0.965 149.907,0.892 149.625,0.892" id="Fill-1" fill="#455A64"></path>
                    <path d="M96.027,25.636 L142.603,52.527 C143.807,53.222 144.582,54.114 144.845,55.068 L144.835,55.075 L63.461,102.057 L63.46,102.057 C61.806,101.905 60.261,101.457 59.057,100.762 L12.481,73.871 L96.027,25.636" id="Fill-2" fill="#FAFAFA"></path>
                    <path d="M63.461,102.174 C63.453,102.174 63.446,102.174 63.439,102.172 C61.746,102.016 60.211,101.563 58.998,100.863 L12.422,73.973 C12.386,73.952 12.364,73.914 12.364,73.871 C12.364,73.83 12.386,73.791 12.422,73.77 L95.968,25.535 C96.004,25.514 96.049,25.514 96.085,25.535 L142.661,52.426 C143.888,53.134 144.682,54.038 144.957,55.037 C144.97,55.083 144.953,55.133 144.915,55.161 C144.911,55.165 144.898,55.174 144.894,55.177 L63.519,102.158 C63.501,102.169 63.481,102.174 63.461,102.174 L63.461,102.174 Z M12.714,73.871 L59.115,100.661 C60.293,101.341 61.786,101.782 63.435,101.937 L144.707,55.015 C144.428,54.108 143.682,53.285 142.544,52.628 L96.027,25.771 L12.714,73.871 L12.714,73.871 Z" id="Fill-3" fill="#607D8B"></path>
                    <path d="M148.327,58.471 C148.145,58.48 147.962,58.48 147.781,58.472 C145.887,58.389 144.479,57.434 144.636,56.34 C144.689,55.967 144.664,55.597 144.564,55.235 L63.461,102.057 C64.089,102.115 64.733,102.13 65.379,102.099 C65.561,102.09 65.743,102.09 65.925,102.098 C67.819,102.181 69.227,103.136 69.07,104.23 L148.327,58.471" id="Fill-4" fill="#FFFFFF"></path>
                    <path d="M69.07,104.347 C69.048,104.347 69.025,104.34 69.005,104.327 C68.968,104.301 68.948,104.257 68.955,104.213 C69,103.896 68.898,103.576 68.658,103.288 C68.153,102.678 67.103,102.266 65.92,102.214 C65.742,102.206 65.563,102.207 65.385,102.215 C64.742,102.246 64.087,102.232 63.45,102.174 C63.399,102.169 63.358,102.132 63.347,102.082 C63.336,102.033 63.358,101.981 63.402,101.956 L144.506,55.134 C144.537,55.116 144.575,55.113 144.609,55.127 C144.642,55.141 144.668,55.17 144.677,55.204 C144.781,55.585 144.806,55.972 144.751,56.357 C144.706,56.673 144.808,56.994 145.047,57.282 C145.553,57.892 146.602,58.303 147.786,58.355 C147.964,58.363 148.143,58.363 148.321,58.354 C148.377,58.352 148.424,58.387 148.439,58.438 C148.454,58.49 148.432,58.545 148.385,58.572 L69.129,104.331 C69.111,104.342 69.09,104.347 69.07,104.347 L69.07,104.347 Z M65.665,101.975 C65.754,101.975 65.842,101.977 65.93,101.981 C67.196,102.037 68.283,102.469 68.838,103.139 C69.065,103.413 69.188,103.714 69.198,104.021 L147.883,58.592 C147.847,58.592 147.811,58.591 147.776,58.589 C146.509,58.533 145.422,58.1 144.867,57.431 C144.585,57.091 144.465,56.707 144.52,56.324 C144.563,56.021 144.552,55.716 144.488,55.414 L63.846,101.97 C64.353,102.002 64.867,102.006 65.374,101.982 C65.471,101.977 65.568,101.975 65.665,101.975 L65.665,101.975 Z" id="Fill-5" fill="#607D8B"></path>
                    <path d="M2.208,55.134 C1.207,53.307 1.967,50.917 3.906,49.797 L59.917,17.453 C61.856,16.333 64.241,16.907 65.243,18.734 L65.475,19.144 C65.872,19.882 66.368,20.56 66.945,21.165 L67.223,21.435 C70.548,24.649 75.806,25.151 80.111,22.665 L87.43,18.445 C89.37,17.326 91.754,17.899 92.755,19.727 L96.005,25.655 L12.486,73.884 L2.208,55.134 Z" id="Fill-6" fill="#FAFAFA"></path>
                    <path d="M12.486,74.001 C12.476,74.001 12.465,73.999 12.455,73.996 C12.424,73.988 12.399,73.967 12.384,73.94 L2.106,55.19 C1.075,53.31 1.857,50.845 3.848,49.696 L59.858,17.352 C60.525,16.967 61.271,16.764 62.016,16.764 C63.431,16.764 64.666,17.466 65.327,18.646 C65.337,18.654 65.345,18.663 65.351,18.674 L65.578,19.088 C65.584,19.1 65.589,19.112 65.591,19.126 C65.985,19.838 66.469,20.497 67.03,21.085 L67.305,21.351 C69.151,23.137 71.649,24.12 74.336,24.12 C76.313,24.12 78.29,23.582 80.053,22.563 C80.064,22.557 80.076,22.553 80.088,22.55 L87.372,18.344 C88.038,17.959 88.784,17.756 89.529,17.756 C90.956,17.756 92.201,18.472 92.858,19.67 L96.107,25.599 C96.138,25.654 96.118,25.724 96.063,25.756 L12.545,73.985 C12.526,73.996 12.506,74.001 12.486,74.001 L12.486,74.001 Z M62.016,16.997 C61.312,16.997 60.606,17.19 59.975,17.554 L3.965,49.899 C2.083,50.985 1.341,53.308 2.31,55.078 L12.531,73.723 L95.848,25.611 L92.653,19.782 C92.038,18.66 90.87,17.99 89.529,17.99 C88.825,17.99 88.119,18.182 87.489,18.547 L80.172,22.772 C80.161,22.778 80.149,22.782 80.137,22.785 C78.346,23.811 76.341,24.354 74.336,24.354 C71.588,24.354 69.033,23.347 67.142,21.519 L66.864,21.249 C66.277,20.634 65.774,19.947 65.367,19.203 C65.36,19.192 65.356,19.179 65.354,19.166 L65.163,18.819 C65.154,18.811 65.146,18.801 65.14,18.79 C64.525,17.667 63.357,16.997 62.016,16.997 L62.016,16.997 Z" id="Fill-7" fill="#607D8B"></path>
                    <path d="M42.434,48.808 L42.434,48.808 C39.924,48.807 37.737,47.55 36.582,45.443 C34.771,42.139 36.144,37.809 39.641,35.789 L51.932,28.691 C53.103,28.015 54.413,27.658 55.721,27.658 C58.231,27.658 60.418,28.916 61.573,31.023 C63.384,34.327 62.012,38.657 58.514,40.677 L46.223,47.775 C45.053,48.45 43.742,48.808 42.434,48.808 L42.434,48.808 Z M55.721,28.125 C54.495,28.125 53.265,28.461 52.166,29.096 L39.875,36.194 C36.596,38.087 35.302,42.136 36.992,45.218 C38.063,47.173 40.098,48.34 42.434,48.34 C43.661,48.34 44.89,48.005 45.99,47.37 L58.281,40.272 C61.56,38.379 62.853,34.33 61.164,31.248 C60.092,29.293 58.058,28.125 55.721,28.125 L55.721,28.125 Z" id="Fill-8" fill="#607D8B"></path>
                    <path d="M149.588,2.407 C149.588,2.407 155.768,5.975 156.325,6.297 L156.325,7.184 C156.325,7.36 156.338,7.544 156.362,7.733 C156.373,7.814 156.382,7.894 156.39,7.975 C156.53,9.39 157.363,10.973 158.495,11.974 L165.891,18.519 C166.068,18.675 166.249,18.814 166.432,18.934 C168.011,19.974 169.382,19.4 169.494,17.652 C169.543,16.868 169.551,16.057 169.517,15.223 L169.514,15.063 L169.514,13.912 C170.78,14.642 195.501,28.915 195.501,28.915 L195.501,82.915 C195.501,84.005 194.731,84.445 193.781,83.897 L151.308,59.374 C150.358,58.826 149.588,57.497 149.588,56.408 L149.588,22.375" id="Fill-9" fill="#FAFAFA"></path>
                    <path d="M194.553,84.25 C194.296,84.25 194.013,84.165 193.722,83.997 L151.25,59.476 C150.269,58.909 149.471,57.533 149.471,56.408 L149.471,22.375 L149.705,22.375 L149.705,56.408 C149.705,57.459 150.45,58.744 151.366,59.274 L193.839,83.795 C194.263,84.04 194.655,84.083 194.942,83.917 C195.227,83.753 195.384,83.397 195.384,82.915 L195.384,28.982 C194.102,28.242 172.104,15.542 169.631,14.114 L169.634,15.22 C169.668,16.052 169.66,16.874 169.61,17.659 C169.556,18.503 169.214,19.123 168.647,19.405 C168.028,19.714 167.197,19.578 166.367,19.032 C166.181,18.909 165.995,18.766 165.814,18.606 L158.417,12.062 C157.259,11.036 156.418,9.437 156.274,7.986 C156.266,7.907 156.257,7.827 156.247,7.748 C156.221,7.555 156.209,7.365 156.209,7.184 L156.209,6.364 C155.375,5.883 149.529,2.508 149.529,2.508 L149.646,2.306 C149.646,2.306 155.827,5.874 156.384,6.196 L156.442,6.23 L156.442,7.184 C156.442,7.355 156.454,7.535 156.478,7.717 C156.489,7.8 156.499,7.882 156.507,7.963 C156.645,9.358 157.455,10.898 158.572,11.886 L165.969,18.431 C166.142,18.584 166.319,18.72 166.496,18.837 C167.254,19.336 168,19.467 168.543,19.196 C169.033,18.953 169.329,18.401 169.377,17.645 C169.427,16.867 169.434,16.054 169.401,15.228 L169.397,15.065 L169.397,13.71 L169.572,13.81 C170.839,14.541 195.559,28.814 195.559,28.814 L195.618,28.847 L195.618,82.915 C195.618,83.484 195.42,83.911 195.059,84.119 C194.908,84.206 194.737,84.25 194.553,84.25" id="Fill-10" fill="#607D8B"></path>
                    <path d="M145.685,56.161 L169.8,70.083 L143.822,85.081 L142.36,84.774 C135.826,82.604 128.732,81.046 121.341,80.158 C116.976,79.634 112.678,81.254 111.743,83.778 C111.506,84.414 111.503,85.071 111.732,85.706 C113.27,89.973 115.968,94.069 119.727,97.841 L120.259,98.686 C120.26,98.685 94.282,113.683 94.282,113.683 L70.167,99.761 L145.685,56.161" id="Fill-11" fill="#FFFFFF"></path>
                    <path d="M94.282,113.818 L94.223,113.785 L69.933,99.761 L70.108,99.66 L145.685,56.026 L145.743,56.059 L170.033,70.083 L143.842,85.205 L143.797,85.195 C143.772,85.19 142.336,84.888 142.336,84.888 C135.787,82.714 128.723,81.163 121.327,80.274 C120.788,80.209 120.236,80.177 119.689,80.177 C115.931,80.177 112.635,81.708 111.852,83.819 C111.624,84.432 111.621,85.053 111.842,85.667 C113.377,89.925 116.058,93.993 119.81,97.758 L119.826,97.779 L120.352,98.614 C120.354,98.617 120.356,98.62 120.358,98.624 L120.422,98.726 L120.317,98.787 C120.264,98.818 94.599,113.635 94.34,113.785 L94.282,113.818 L94.282,113.818 Z M70.401,99.761 L94.282,113.549 L119.084,99.229 C119.63,98.914 119.93,98.74 120.101,98.654 L119.635,97.914 C115.864,94.127 113.168,90.033 111.622,85.746 C111.382,85.079 111.386,84.404 111.633,83.738 C112.448,81.539 115.836,79.943 119.689,79.943 C120.246,79.943 120.806,79.976 121.355,80.042 C128.767,80.933 135.846,82.487 142.396,84.663 C143.232,84.838 143.611,84.917 143.786,84.967 L169.566,70.083 L145.685,56.295 L70.401,99.761 L70.401,99.761 Z" id="Fill-12" fill="#607D8B"></path>
                    <path d="M167.23,18.979 L167.23,69.85 L139.909,85.623 L133.448,71.456 C132.538,69.46 130.02,69.718 127.824,72.03 C126.769,73.14 125.931,74.585 125.494,76.048 L119.034,97.676 L91.712,113.45 L91.712,62.579 L167.23,18.979" id="Fill-13" fill="#FFFFFF"></path>
                    <path d="M91.712,113.567 C91.692,113.567 91.672,113.561 91.653,113.551 C91.618,113.53 91.595,113.492 91.595,113.45 L91.595,62.579 C91.595,62.537 91.618,62.499 91.653,62.478 L167.172,18.878 C167.208,18.857 167.252,18.857 167.288,18.878 C167.324,18.899 167.347,18.937 167.347,18.979 L167.347,69.85 C167.347,69.891 167.324,69.93 167.288,69.95 L139.967,85.725 C139.939,85.741 139.905,85.745 139.873,85.735 C139.842,85.725 139.816,85.702 139.802,85.672 L133.342,71.504 C132.967,70.682 132.28,70.229 131.408,70.229 C130.319,70.229 129.044,70.915 127.908,72.11 C126.874,73.2 126.034,74.647 125.606,76.082 L119.146,97.709 C119.137,97.738 119.118,97.762 119.092,97.777 L91.77,113.551 C91.752,113.561 91.732,113.567 91.712,113.567 L91.712,113.567 Z M91.829,62.647 L91.829,113.248 L118.935,97.598 L125.382,76.015 C125.827,74.525 126.664,73.081 127.739,71.95 C128.919,70.708 130.256,69.996 131.408,69.996 C132.377,69.996 133.139,70.497 133.554,71.407 L139.961,85.458 L167.113,69.782 L167.113,19.181 L91.829,62.647 L91.829,62.647 Z" id="Fill-14" fill="#607D8B"></path>
                    <path d="M168.543,19.213 L168.543,70.083 L141.221,85.857 L134.761,71.689 C133.851,69.694 131.333,69.951 129.137,72.263 C128.082,73.374 127.244,74.819 126.807,76.282 L120.346,97.909 L93.025,113.683 L93.025,62.813 L168.543,19.213" id="Fill-15" fill="#FFFFFF"></path>
                    <path d="M93.025,113.8 C93.005,113.8 92.984,113.795 92.966,113.785 C92.931,113.764 92.908,113.725 92.908,113.684 L92.908,62.813 C92.908,62.771 92.931,62.733 92.966,62.712 L168.484,19.112 C168.52,19.09 168.565,19.09 168.601,19.112 C168.637,19.132 168.66,19.171 168.66,19.212 L168.66,70.083 C168.66,70.125 168.637,70.164 168.601,70.184 L141.28,85.958 C141.251,85.975 141.217,85.979 141.186,85.968 C141.154,85.958 141.129,85.936 141.115,85.906 L134.655,71.738 C134.28,70.915 133.593,70.463 132.72,70.463 C131.632,70.463 130.357,71.148 129.221,72.344 C128.186,73.433 127.347,74.881 126.919,76.315 L120.458,97.943 C120.45,97.972 120.431,97.996 120.405,98.01 L93.083,113.785 C93.065,113.795 93.045,113.8 93.025,113.8 L93.025,113.8 Z M93.142,62.881 L93.142,113.481 L120.248,97.832 L126.695,76.248 C127.14,74.758 127.977,73.315 129.052,72.183 C130.231,70.942 131.568,70.229 132.72,70.229 C133.689,70.229 134.452,70.731 134.867,71.641 L141.274,85.692 L168.426,70.016 L168.426,19.415 L93.142,62.881 L93.142,62.881 Z" id="Fill-16" fill="#607D8B"></path>
                    <path d="M169.8,70.083 L142.478,85.857 L136.018,71.689 C135.108,69.694 132.59,69.951 130.393,72.263 C129.339,73.374 128.5,74.819 128.064,76.282 L121.603,97.909 L94.282,113.683 L94.282,62.813 L169.8,19.213 L169.8,70.083 Z" id="Fill-17" fill="#FAFAFA"></path>
                    <path d="M94.282,113.917 C94.241,113.917 94.201,113.907 94.165,113.886 C94.093,113.845 94.048,113.767 94.048,113.684 L94.048,62.813 C94.048,62.73 94.093,62.652 94.165,62.611 L169.683,19.01 C169.755,18.969 169.844,18.969 169.917,19.01 C169.989,19.052 170.033,19.129 170.033,19.212 L170.033,70.083 C170.033,70.166 169.989,70.244 169.917,70.285 L142.595,86.06 C142.538,86.092 142.469,86.1 142.407,86.08 C142.344,86.06 142.293,86.014 142.266,85.954 L135.805,71.786 C135.445,70.997 134.813,70.58 133.977,70.58 C132.921,70.58 131.676,71.252 130.562,72.424 C129.54,73.501 128.711,74.931 128.287,76.348 L121.827,97.976 C121.81,98.034 121.771,98.082 121.72,98.112 L94.398,113.886 C94.362,113.907 94.322,113.917 94.282,113.917 L94.282,113.917 Z M94.515,62.948 L94.515,113.279 L121.406,97.754 L127.84,76.215 C128.29,74.708 129.137,73.247 130.224,72.103 C131.425,70.838 132.793,70.112 133.977,70.112 C134.995,70.112 135.795,70.638 136.23,71.592 L142.584,85.526 L169.566,69.948 L169.566,19.617 L94.515,62.948 L94.515,62.948 Z" id="Fill-18" fill="#607D8B"></path>
                    <path d="M109.894,92.943 L109.894,92.943 C108.12,92.943 106.653,92.218 105.65,90.823 C105.583,90.731 105.593,90.61 105.673,90.529 C105.753,90.448 105.88,90.44 105.974,90.506 C106.754,91.053 107.679,91.333 108.724,91.333 C110.047,91.333 111.478,90.894 112.98,90.027 C118.291,86.96 122.611,79.509 122.611,73.416 C122.611,71.489 122.169,69.856 121.333,68.692 C121.266,68.6 121.276,68.473 121.356,68.392 C121.436,68.311 121.563,68.299 121.656,68.365 C123.327,69.537 124.247,71.746 124.247,74.584 C124.247,80.826 119.821,88.447 114.382,91.587 C112.808,92.495 111.298,92.943 109.894,92.943 L109.894,92.943 Z M106.925,91.401 C107.738,92.052 108.745,92.278 109.893,92.278 L109.894,92.278 C111.215,92.278 112.647,91.951 114.148,91.084 C119.459,88.017 123.78,80.621 123.78,74.528 C123.78,72.549 123.317,70.929 122.454,69.767 C122.865,70.802 123.079,72.042 123.079,73.402 C123.079,79.645 118.653,87.285 113.214,90.425 C111.64,91.334 110.13,91.742 108.724,91.742 C108.083,91.742 107.481,91.593 106.925,91.401 L106.925,91.401 Z" id="Fill-19" fill="#607D8B"></path>
                    <path d="M113.097,90.23 C118.481,87.122 122.845,79.594 122.845,73.416 C122.845,71.365 122.362,69.724 121.522,68.556 C119.738,67.304 117.148,67.362 114.265,69.026 C108.881,72.134 104.517,79.662 104.517,85.84 C104.517,87.891 105,89.532 105.84,90.7 C107.624,91.952 110.214,91.894 113.097,90.23" id="Fill-20" fill="#FAFAFA"></path>
                    <path d="M108.724,91.614 L108.724,91.614 C107.582,91.614 106.566,91.401 105.705,90.797 C105.684,90.783 105.665,90.811 105.65,90.79 C104.756,89.546 104.283,87.842 104.283,85.817 C104.283,79.575 108.709,71.953 114.148,68.812 C115.722,67.904 117.232,67.449 118.638,67.449 C119.78,67.449 120.796,67.758 121.656,68.362 C121.678,68.377 121.697,68.397 121.712,68.418 C122.606,69.662 123.079,71.39 123.079,73.415 C123.079,79.658 118.653,87.198 113.214,90.338 C111.64,91.247 110.13,91.614 108.724,91.614 L108.724,91.614 Z M106.006,90.505 C106.78,91.037 107.694,91.281 108.724,91.281 C110.047,91.281 111.478,90.868 112.98,90.001 C118.291,86.935 122.611,79.496 122.611,73.403 C122.611,71.494 122.177,69.88 121.356,68.718 C120.582,68.185 119.668,67.919 118.638,67.919 C117.315,67.919 115.883,68.36 114.382,69.227 C109.071,72.293 104.751,79.733 104.751,85.826 C104.751,87.735 105.185,89.343 106.006,90.505 L106.006,90.505 Z" id="Fill-21" fill="#607D8B"></path>
                    <path d="M149.318,7.262 L139.334,16.14 L155.227,27.171 L160.816,21.059 L149.318,7.262" id="Fill-22" fill="#FAFAFA"></path>
                    <path d="M169.676,13.84 L159.928,19.467 C156.286,21.57 150.4,21.58 146.781,19.491 C143.161,17.402 143.18,14.003 146.822,11.9 L156.317,6.292 L149.588,2.407 L67.752,49.478 L113.675,75.992 L116.756,74.213 C117.387,73.848 117.625,73.315 117.374,72.823 C115.017,68.191 114.781,63.277 116.691,58.561 C122.329,44.641 141.2,33.746 165.309,30.491 C173.478,29.388 181.989,29.524 190.013,30.885 C190.865,31.03 191.789,30.893 192.42,30.528 L195.501,28.75 L169.676,13.84" id="Fill-23" fill="#FAFAFA"></path>
                    <path d="M113.675,76.459 C113.594,76.459 113.514,76.438 113.442,76.397 L67.518,49.882 C67.374,49.799 67.284,49.645 67.285,49.478 C67.285,49.311 67.374,49.157 67.519,49.073 L149.355,2.002 C149.499,1.919 149.677,1.919 149.821,2.002 L156.55,5.887 C156.774,6.017 156.85,6.302 156.722,6.526 C156.592,6.749 156.307,6.826 156.083,6.696 L149.587,2.946 L68.687,49.479 L113.675,75.452 L116.523,73.808 C116.715,73.697 117.143,73.399 116.958,73.035 C114.542,68.287 114.3,63.221 116.258,58.385 C119.064,51.458 125.143,45.143 133.84,40.122 C142.497,35.124 153.358,31.633 165.247,30.028 C173.445,28.921 182.037,29.058 190.091,30.425 C190.83,30.55 191.652,30.432 192.186,30.124 L194.567,28.75 L169.442,14.244 C169.219,14.115 169.142,13.829 169.271,13.606 C169.4,13.382 169.685,13.306 169.909,13.435 L195.734,28.345 C195.879,28.428 195.968,28.583 195.968,28.75 C195.968,28.916 195.879,29.071 195.734,29.154 L192.653,30.933 C191.932,31.35 190.89,31.508 189.935,31.346 C181.972,29.995 173.478,29.86 165.372,30.954 C153.602,32.543 142.86,35.993 134.307,40.931 C125.793,45.847 119.851,52.004 117.124,58.736 C115.27,63.314 115.501,68.112 117.79,72.611 C118.16,73.336 117.845,74.124 116.99,74.617 L113.909,76.397 C113.836,76.438 113.756,76.459 113.675,76.459" id="Fill-24" fill="#455A64"></path>
                    <path d="M153.316,21.279 C150.903,21.279 148.495,20.751 146.664,19.693 C144.846,18.644 143.844,17.232 143.844,15.718 C143.844,14.191 144.86,12.763 146.705,11.698 L156.198,6.091 C156.309,6.025 156.452,6.062 156.518,6.173 C156.583,6.284 156.547,6.427 156.436,6.493 L146.94,12.102 C145.244,13.081 144.312,14.365 144.312,15.718 C144.312,17.058 145.23,18.326 146.897,19.289 C150.446,21.338 156.24,21.327 159.811,19.265 L169.559,13.637 C169.67,13.573 169.813,13.611 169.878,13.723 C169.943,13.834 169.904,13.977 169.793,14.042 L160.045,19.67 C158.187,20.742 155.749,21.279 153.316,21.279" id="Fill-25" fill="#607D8B"></path>
                    <path d="M113.675,75.992 L67.762,49.484" id="Fill-26" fill="#455A64"></path>
                    <path d="M113.675,76.342 C113.615,76.342 113.555,76.327 113.5,76.295 L67.587,49.787 C67.419,49.69 67.362,49.476 67.459,49.309 C67.556,49.141 67.77,49.083 67.937,49.18 L113.85,75.688 C114.018,75.785 114.075,76 113.978,76.167 C113.914,76.279 113.796,76.342 113.675,76.342" id="Fill-27" fill="#455A64"></path>
                    <path d="M67.762,49.484 L67.762,103.485 C67.762,104.575 68.532,105.903 69.482,106.452 L111.955,130.973 C112.905,131.522 113.675,131.083 113.675,129.993 L113.675,75.992" id="Fill-28" fill="#FAFAFA"></path>
                    <path d="M112.727,131.561 C112.43,131.561 112.107,131.466 111.78,131.276 L69.307,106.755 C68.244,106.142 67.412,104.705 67.412,103.485 L67.412,49.484 C67.412,49.29 67.569,49.134 67.762,49.134 C67.956,49.134 68.113,49.29 68.113,49.484 L68.113,103.485 C68.113,104.445 68.82,105.665 69.657,106.148 L112.13,130.67 C112.474,130.868 112.791,130.913 113,130.792 C113.206,130.673 113.325,130.381 113.325,129.993 L113.325,75.992 C113.325,75.798 113.482,75.641 113.675,75.641 C113.869,75.641 114.025,75.798 114.025,75.992 L114.025,129.993 C114.025,130.648 113.786,131.147 113.35,131.399 C113.162,131.507 112.952,131.561 112.727,131.561" id="Fill-29" fill="#455A64"></path>
                    <path d="M112.86,40.512 C112.86,40.512 112.86,40.512 112.859,40.512 C110.541,40.512 108.36,39.99 106.717,39.041 C105.012,38.057 104.074,36.726 104.074,35.292 C104.074,33.847 105.026,32.501 106.754,31.504 L118.795,24.551 C120.463,23.589 122.669,23.058 125.007,23.058 C127.325,23.058 129.506,23.581 131.15,24.53 C132.854,25.514 133.793,26.845 133.793,28.278 C133.793,29.724 132.841,31.069 131.113,32.067 L119.071,39.019 C117.403,39.982 115.197,40.512 112.86,40.512 L112.86,40.512 Z M125.007,23.759 C122.79,23.759 120.709,24.256 119.146,25.158 L107.104,32.11 C105.602,32.978 104.774,34.108 104.774,35.292 C104.774,36.465 105.589,37.581 107.067,38.434 C108.605,39.323 110.663,39.812 112.859,39.812 L112.86,39.812 C115.076,39.812 117.158,39.315 118.721,38.413 L130.762,31.46 C132.264,30.593 133.092,29.463 133.092,28.278 C133.092,27.106 132.278,25.99 130.8,25.136 C129.261,24.248 127.204,23.759 125.007,23.759 L125.007,23.759 Z" id="Fill-30" fill="#607D8B"></path>
                    <path d="M165.63,16.219 L159.896,19.53 C156.729,21.358 151.61,21.367 148.463,19.55 C145.316,17.733 145.332,14.778 148.499,12.949 L154.233,9.639 L165.63,16.219" id="Fill-31" fill="#FAFAFA"></path>
                    <path d="M154.233,10.448 L164.228,16.219 L159.546,18.923 C158.112,19.75 156.194,20.206 154.147,20.206 C152.118,20.206 150.224,19.757 148.814,18.943 C147.524,18.199 146.814,17.249 146.814,16.269 C146.814,15.278 147.537,14.314 148.85,13.556 L154.233,10.448 M154.233,9.639 L148.499,12.949 C145.332,14.778 145.316,17.733 148.463,19.55 C150.031,20.455 152.086,20.907 154.147,20.907 C156.224,20.907 158.306,20.447 159.896,19.53 L165.63,16.219 L154.233,9.639" id="Fill-32" fill="#607D8B"></path>
                    <path d="M145.445,72.667 L145.445,72.667 C143.672,72.667 142.204,71.817 141.202,70.422 C141.135,70.33 141.145,70.147 141.225,70.066 C141.305,69.985 141.432,69.946 141.525,70.011 C142.306,70.559 143.231,70.823 144.276,70.822 C145.598,70.822 147.03,70.376 148.532,69.509 C153.842,66.443 158.163,58.987 158.163,52.894 C158.163,50.967 157.721,49.332 156.884,48.168 C156.818,48.076 156.828,47.948 156.908,47.867 C156.988,47.786 157.114,47.774 157.208,47.84 C158.878,49.012 159.798,51.22 159.798,54.059 C159.798,60.301 155.373,68.046 149.933,71.186 C148.36,72.094 146.85,72.667 145.445,72.667 L145.445,72.667 Z M142.476,71 C143.29,71.651 144.296,72.002 145.445,72.002 C146.767,72.002 148.198,71.55 149.7,70.682 C155.01,67.617 159.331,60.159 159.331,54.065 C159.331,52.085 158.868,50.435 158.006,49.272 C158.417,50.307 158.63,51.532 158.63,52.892 C158.63,59.134 154.205,66.767 148.765,69.907 C147.192,70.816 145.681,71.283 144.276,71.283 C143.634,71.283 143.033,71.192 142.476,71 L142.476,71 Z" id="Fill-33" fill="#607D8B"></path>
                    <path d="M148.648,69.704 C154.032,66.596 158.396,59.068 158.396,52.891 C158.396,50.839 157.913,49.198 157.074,48.03 C155.289,46.778 152.699,46.836 149.816,48.501 C144.433,51.609 140.068,59.137 140.068,65.314 C140.068,67.365 140.552,69.006 141.391,70.174 C143.176,71.427 145.765,71.369 148.648,69.704" id="Fill-34" fill="#FAFAFA"></path>
                    <path d="M144.276,71.276 L144.276,71.276 C143.133,71.276 142.118,70.969 141.257,70.365 C141.236,70.351 141.217,70.332 141.202,70.311 C140.307,69.067 139.835,67.339 139.835,65.314 C139.835,59.073 144.26,51.439 149.7,48.298 C151.273,47.39 152.784,46.929 154.189,46.929 C155.332,46.929 156.347,47.236 157.208,47.839 C157.229,47.854 157.248,47.873 157.263,47.894 C158.157,49.138 158.63,50.865 158.63,52.891 C158.63,59.132 154.205,66.766 148.765,69.907 C147.192,70.815 145.681,71.276 144.276,71.276 L144.276,71.276 Z M141.558,70.104 C142.331,70.637 143.245,71.005 144.276,71.005 C145.598,71.005 147.03,70.467 148.532,69.6 C153.842,66.534 158.163,59.033 158.163,52.939 C158.163,51.031 157.729,49.385 156.907,48.223 C156.133,47.691 155.219,47.409 154.189,47.409 C152.867,47.409 151.435,47.842 149.933,48.709 C144.623,51.775 140.302,59.273 140.302,65.366 C140.302,67.276 140.736,68.942 141.558,70.104 L141.558,70.104 Z" id="Fill-35" fill="#607D8B"></path>
                    <path d="M150.72,65.361 L150.357,65.066 C151.147,64.092 151.869,63.04 152.505,61.938 C153.313,60.539 153.978,59.067 154.482,57.563 L154.925,57.712 C154.412,59.245 153.733,60.745 152.91,62.172 C152.262,63.295 151.525,64.368 150.72,65.361" id="Fill-36" fill="#607D8B"></path>
                    <path d="M115.917,84.514 L115.554,84.22 C116.344,83.245 117.066,82.194 117.702,81.092 C118.51,79.692 119.175,78.22 119.678,76.717 L120.121,76.865 C119.608,78.398 118.93,79.899 118.106,81.326 C117.458,82.448 116.722,83.521 115.917,84.514" id="Fill-37" fill="#607D8B"></path>
                    <path d="M114,130.476 L114,130.008 L114,76.052 L114,75.584 L114,76.052 L114,130.008 L114,130.476" id="Fill-38" fill="#607D8B"></path>
                </g>
                <g id="Imported-Layers-Copy" transform="translate(62.000000, 0.000000)" sketch:type="MSShapeGroup">
                    <path d="M19.822,37.474 C19.839,37.339 19.747,37.194 19.555,37.082 C19.228,36.894 18.729,36.872 18.446,37.037 L12.434,40.508 C12.303,40.584 12.24,40.686 12.243,40.793 C12.245,40.925 12.245,41.254 12.245,41.371 L12.245,41.414 L12.238,41.542 C8.148,43.887 5.647,45.321 5.647,45.321 C5.646,45.321 3.57,46.367 2.86,50.513 C2.86,50.513 1.948,57.474 1.962,70.258 C1.977,82.828 2.568,87.328 3.129,91.609 C3.349,93.293 6.13,93.734 6.13,93.734 C6.461,93.774 6.828,93.707 7.21,93.486 L82.483,49.935 C84.291,48.866 85.15,46.216 85.539,43.651 C86.752,35.661 87.214,10.673 85.264,3.773 C85.068,3.08 84.754,2.69 84.396,2.491 L82.31,1.701 C81.583,1.729 80.894,2.168 80.776,2.236 C80.636,2.317 41.807,24.585 20.032,37.072 L19.822,37.474" id="Fill-1" fill="#FFFFFF"></path>
                    <path d="M82.311,1.701 L84.396,2.491 C84.754,2.69 85.068,3.08 85.264,3.773 C87.213,10.673 86.751,35.66 85.539,43.651 C85.149,46.216 84.29,48.866 82.483,49.935 L7.21,93.486 C6.897,93.667 6.595,93.744 6.314,93.744 L6.131,93.733 C6.131,93.734 3.349,93.293 3.128,91.609 C2.568,87.327 1.977,82.828 1.963,70.258 C1.948,57.474 2.86,50.513 2.86,50.513 C3.57,46.367 5.647,45.321 5.647,45.321 C5.647,45.321 8.148,43.887 12.238,41.542 L12.245,41.414 L12.245,41.371 C12.245,41.254 12.245,40.925 12.243,40.793 C12.24,40.686 12.302,40.583 12.434,40.508 L18.446,37.036 C18.574,36.962 18.746,36.926 18.927,36.926 C19.145,36.926 19.376,36.979 19.554,37.082 C19.747,37.194 19.839,37.34 19.822,37.474 L20.033,37.072 C41.806,24.585 80.636,2.318 80.777,2.236 C80.894,2.168 81.583,1.729 82.311,1.701 M82.311,0.704 L82.272,0.705 C81.654,0.728 80.989,0.949 80.298,1.361 L80.277,1.373 C80.129,1.458 59.768,13.135 19.758,36.079 C19.5,35.981 19.214,35.929 18.927,35.929 C18.562,35.929 18.223,36.013 17.947,36.173 L11.935,39.644 C11.493,39.899 11.236,40.334 11.246,40.81 L11.247,40.96 L5.167,44.447 C4.794,44.646 2.625,45.978 1.877,50.345 L1.871,50.384 C1.862,50.454 0.951,57.557 0.965,70.259 C0.979,82.879 1.568,87.375 2.137,91.724 L2.139,91.739 C2.447,94.094 5.614,94.662 5.975,94.719 L6.009,94.723 C6.11,94.736 6.213,94.742 6.314,94.742 C6.79,94.742 7.26,94.61 7.71,94.35 L82.983,50.798 C84.794,49.727 85.982,47.375 86.525,43.801 C87.711,35.987 88.259,10.705 86.224,3.502 C85.971,2.609 85.52,1.975 84.881,1.62 L84.749,1.558 L82.664,0.769 C82.551,0.725 82.431,0.704 82.311,0.704" id="Fill-2" fill="#455A64"></path>
                    <path d="M66.267,11.565 L67.762,11.999 L11.423,44.325" id="Fill-3" fill="#FFFFFF"></path>
                    <path d="M12.202,90.545 C12.029,90.545 11.862,90.455 11.769,90.295 C11.632,90.057 11.713,89.752 11.952,89.614 L30.389,78.969 C30.628,78.831 30.933,78.913 31.071,79.152 C31.208,79.39 31.127,79.696 30.888,79.833 L12.451,90.478 L12.202,90.545" id="Fill-4" fill="#607D8B"></path>
                    <path d="M13.764,42.654 L13.656,42.592 L13.702,42.421 L18.837,39.457 L19.007,39.502 L18.962,39.673 L13.827,42.637 L13.764,42.654" id="Fill-5" fill="#607D8B"></path>
                    <path d="M8.52,90.375 L8.52,46.421 L8.583,46.385 L75.84,7.554 L75.84,51.508 L75.778,51.544 L8.52,90.375 L8.52,90.375 Z M8.77,46.564 L8.77,89.944 L75.591,51.365 L75.591,7.985 L8.77,46.564 L8.77,46.564 Z" id="Fill-6" fill="#607D8B"></path>
                    <path d="M24.986,83.182 C24.756,83.331 24.374,83.566 24.137,83.705 L12.632,90.406 C12.395,90.545 12.426,90.658 12.7,90.658 L13.265,90.658 C13.54,90.658 13.958,90.545 14.195,90.406 L25.7,83.705 C25.937,83.566 26.128,83.452 26.125,83.449 C26.122,83.447 26.119,83.22 26.119,82.946 C26.119,82.672 25.931,82.569 25.701,82.719 L24.986,83.182" id="Fill-7" fill="#607D8B"></path>
                    <path d="M13.266,90.782 L12.7,90.782 C12.5,90.782 12.384,90.726 12.354,90.616 C12.324,90.506 12.397,90.399 12.569,90.299 L24.074,83.597 C24.31,83.459 24.689,83.226 24.918,83.078 L25.633,82.614 C25.723,82.555 25.813,82.525 25.899,82.525 C26.071,82.525 26.244,82.655 26.244,82.946 C26.244,83.16 26.245,83.309 26.247,83.383 L26.253,83.387 L26.249,83.456 C26.246,83.531 26.246,83.531 25.763,83.812 L14.258,90.514 C14,90.665 13.564,90.782 13.266,90.782 L13.266,90.782 Z M12.666,90.532 L12.7,90.533 L13.266,90.533 C13.518,90.533 13.915,90.425 14.132,90.299 L25.637,83.597 C25.805,83.499 25.931,83.424 25.998,83.383 C25.994,83.299 25.994,83.165 25.994,82.946 L25.899,82.775 L25.768,82.824 L25.054,83.287 C24.822,83.437 24.438,83.673 24.2,83.812 L12.695,90.514 L12.666,90.532 L12.666,90.532 Z" id="Fill-8" fill="#607D8B"></path>
                    <path d="M13.266,89.871 L12.7,89.871 C12.5,89.871 12.384,89.815 12.354,89.705 C12.324,89.595 12.397,89.488 12.569,89.388 L24.074,82.686 C24.332,82.535 24.768,82.418 25.067,82.418 L25.632,82.418 C25.832,82.418 25.948,82.474 25.978,82.584 C26.008,82.694 25.935,82.801 25.763,82.901 L14.258,89.603 C14,89.754 13.564,89.871 13.266,89.871 L13.266,89.871 Z M12.666,89.621 L12.7,89.622 L13.266,89.622 C13.518,89.622 13.915,89.515 14.132,89.388 L25.637,82.686 L25.667,82.668 L25.632,82.667 L25.067,82.667 C24.815,82.667 24.418,82.775 24.2,82.901 L12.695,89.603 L12.666,89.621 L12.666,89.621 Z" id="Fill-9" fill="#607D8B"></path>
                    <path d="M12.37,90.801 L12.37,89.554 L12.37,90.801" id="Fill-10" fill="#607D8B"></path>
                    <path d="M6.13,93.901 C5.379,93.808 4.816,93.164 4.691,92.525 C3.86,88.287 3.54,83.743 3.526,71.173 C3.511,58.389 4.423,51.428 4.423,51.428 C5.134,47.282 7.21,46.236 7.21,46.236 C7.21,46.236 81.667,3.25 82.069,3.017 C82.292,2.888 84.556,1.433 85.264,3.94 C87.214,10.84 86.752,35.827 85.539,43.818 C85.15,46.383 84.291,49.033 82.483,50.101 L7.21,93.653 C6.828,93.874 6.461,93.941 6.13,93.901 C6.13,93.901 3.349,93.46 3.129,91.776 C2.568,87.495 1.977,82.995 1.962,70.425 C1.948,57.641 2.86,50.68 2.86,50.68 C3.57,46.534 5.647,45.489 5.647,45.489 C5.646,45.489 8.065,44.092 12.245,41.679 L13.116,41.56 L19.715,37.73 L19.761,37.269 L6.13,93.901" id="Fill-11" fill="#FAFAFA"></path>
                    <path d="M6.317,94.161 L6.102,94.148 L6.101,94.148 L5.857,94.101 C5.138,93.945 3.085,93.365 2.881,91.809 C2.313,87.469 1.727,82.996 1.713,70.425 C1.699,57.771 2.604,50.718 2.613,50.648 C3.338,46.417 5.445,45.31 5.535,45.266 L12.163,41.439 L13.033,41.32 L19.479,37.578 L19.513,37.244 C19.526,37.107 19.647,37.008 19.786,37.021 C19.922,37.034 20.023,37.156 20.009,37.293 L19.95,37.882 L13.198,41.801 L12.328,41.919 L5.772,45.704 C5.741,45.72 3.782,46.772 3.106,50.722 C3.099,50.782 2.198,57.808 2.212,70.424 C2.226,82.963 2.809,87.42 3.373,91.729 C3.464,92.42 4.062,92.883 4.682,93.181 C4.566,92.984 4.486,92.776 4.446,92.572 C3.665,88.588 3.291,84.37 3.276,71.173 C3.262,58.52 4.167,51.466 4.176,51.396 C4.901,47.165 7.008,46.059 7.098,46.014 C7.094,46.015 81.542,3.034 81.944,2.802 L81.972,2.785 C82.876,2.247 83.692,2.097 84.332,2.352 C84.887,2.573 85.281,3.085 85.504,3.872 C87.518,11 86.964,36.091 85.785,43.855 C85.278,47.196 84.21,49.37 82.61,50.317 L7.335,93.869 C6.999,94.063 6.658,94.161 6.317,94.161 L6.317,94.161 Z M6.17,93.654 C6.463,93.69 6.774,93.617 7.085,93.437 L82.358,49.886 C84.181,48.808 84.96,45.971 85.292,43.78 C86.466,36.049 87.023,11.085 85.024,4.008 C84.846,3.377 84.551,2.976 84.148,2.816 C83.664,2.623 82.982,2.764 82.227,3.213 L82.193,3.234 C81.791,3.466 7.335,46.452 7.335,46.452 C7.304,46.469 5.346,47.521 4.669,51.471 C4.662,51.53 3.761,58.556 3.775,71.173 C3.79,84.328 4.161,88.524 4.936,92.476 C5.026,92.937 5.412,93.459 5.973,93.615 C6.087,93.64 6.158,93.652 6.169,93.654 L6.17,93.654 L6.17,93.654 Z" id="Fill-12" fill="#455A64"></path>
                    <path d="M7.317,68.982 C7.806,68.701 8.202,68.926 8.202,69.487 C8.202,70.047 7.806,70.73 7.317,71.012 C6.829,71.294 6.433,71.069 6.433,70.508 C6.433,69.948 6.829,69.265 7.317,68.982" id="Fill-13" fill="#FFFFFF"></path>
                    <path d="M6.92,71.133 C6.631,71.133 6.433,70.905 6.433,70.508 C6.433,69.948 6.829,69.265 7.317,68.982 C7.46,68.9 7.595,68.861 7.714,68.861 C8.003,68.861 8.202,69.09 8.202,69.487 C8.202,70.047 7.806,70.73 7.317,71.012 C7.174,71.094 7.039,71.133 6.92,71.133 M7.714,68.674 C7.557,68.674 7.392,68.723 7.224,68.821 C6.676,69.138 6.246,69.879 6.246,70.508 C6.246,70.994 6.517,71.32 6.92,71.32 C7.078,71.32 7.243,71.271 7.411,71.174 C7.959,70.857 8.389,70.117 8.389,69.487 C8.389,69.001 8.117,68.674 7.714,68.674" id="Fill-14" fill="#8097A2"></path>
                    <path d="M6.92,70.947 C6.649,70.947 6.621,70.64 6.621,70.508 C6.621,70.017 6.982,69.392 7.411,69.145 C7.521,69.082 7.625,69.049 7.714,69.049 C7.986,69.049 8.015,69.355 8.015,69.487 C8.015,69.978 7.652,70.603 7.224,70.851 C7.115,70.914 7.01,70.947 6.92,70.947 M7.714,68.861 C7.595,68.861 7.46,68.9 7.317,68.982 C6.829,69.265 6.433,69.948 6.433,70.508 C6.433,70.905 6.631,71.133 6.92,71.133 C7.039,71.133 7.174,71.094 7.317,71.012 C7.806,70.73 8.202,70.047 8.202,69.487 C8.202,69.09 8.003,68.861 7.714,68.861" id="Fill-15" fill="#8097A2"></path>
                    <path d="M7.444,85.35 C7.708,85.198 7.921,85.319 7.921,85.622 C7.921,85.925 7.708,86.292 7.444,86.444 C7.181,86.597 6.967,86.475 6.967,86.173 C6.967,85.871 7.181,85.502 7.444,85.35" id="Fill-16" fill="#FFFFFF"></path>
                    <path d="M7.23,86.51 C7.074,86.51 6.967,86.387 6.967,86.173 C6.967,85.871 7.181,85.502 7.444,85.35 C7.521,85.305 7.594,85.284 7.658,85.284 C7.814,85.284 7.921,85.408 7.921,85.622 C7.921,85.925 7.708,86.292 7.444,86.444 C7.367,86.489 7.294,86.51 7.23,86.51 M7.658,85.098 C7.558,85.098 7.455,85.127 7.351,85.188 C7.031,85.373 6.781,85.806 6.781,86.173 C6.781,86.482 6.966,86.697 7.23,86.697 C7.33,86.697 7.433,86.666 7.538,86.607 C7.858,86.422 8.108,85.989 8.108,85.622 C8.108,85.313 7.923,85.098 7.658,85.098" id="Fill-17" fill="#8097A2"></path>
                    <path d="M7.23,86.322 L7.154,86.173 C7.154,85.938 7.333,85.629 7.538,85.512 L7.658,85.471 L7.734,85.622 C7.734,85.856 7.555,86.164 7.351,86.282 L7.23,86.322 M7.658,85.284 C7.594,85.284 7.521,85.305 7.444,85.35 C7.181,85.502 6.967,85.871 6.967,86.173 C6.967,86.387 7.074,86.51 7.23,86.51 C7.294,86.51 7.367,86.489 7.444,86.444 C7.708,86.292 7.921,85.925 7.921,85.622 C7.921,85.408 7.814,85.284 7.658,85.284" id="Fill-18" fill="#8097A2"></path>
                    <path d="M77.278,7.769 L77.278,51.436 L10.208,90.16 L10.208,46.493 L77.278,7.769" id="Fill-19" fill="#455A64"></path>
                    <path d="M10.083,90.375 L10.083,46.421 L10.146,46.385 L77.403,7.554 L77.403,51.508 L77.341,51.544 L10.083,90.375 L10.083,90.375 Z M10.333,46.564 L10.333,89.944 L77.154,51.365 L77.154,7.985 L10.333,46.564 L10.333,46.564 Z" id="Fill-20" fill="#607D8B"></path>
                </g>
                <path d="M125.737,88.647 L118.098,91.981 L118.098,84 L106.639,88.713 L106.639,96.982 L99,100.315 L112.369,103.961 L125.737,88.647" id="Imported-Layers-Copy-2" fill="#455A64" sketch:type="MSShapeGroup"></path>
            </g>
        </g>
    </g>
</svg>');
};

module.exports = RotateInstructions;

},{"./util.js":22}],17:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var SensorSample = _dereq_('./sensor-sample.js');
var MathUtil = _dereq_('../math-util.js');
var Util = _dereq_('../util.js');

/**
 * An implementation of a simple complementary filter, which fuses gyroscope and
 * accelerometer data from the 'devicemotion' event.
 *
 * Accelerometer data is very noisy, but stable over the long term.
 * Gyroscope data is smooth, but tends to drift over the long term.
 *
 * This fusion is relatively simple:
 * 1. Get orientation estimates from accelerometer by applying a low-pass filter
 *    on that data.
 * 2. Get orientation estimates from gyroscope by integrating over time.
 * 3. Combine the two estimates, weighing (1) in the long term, but (2) for the
 *    short term.
 */
function ComplementaryFilter(kFilter) {
  this.kFilter = kFilter;

  // Raw sensor measurements.
  this.currentAccelMeasurement = new SensorSample();
  this.currentGyroMeasurement = new SensorSample();
  this.previousGyroMeasurement = new SensorSample();

  // Set default look direction to be in the correct direction.
  if (Util.isIOS()) {
    this.filterQ = new MathUtil.Quaternion(-1, 0, 0, 1);
  } else {
    this.filterQ = new MathUtil.Quaternion(1, 0, 0, 1);
  }
  this.previousFilterQ = new MathUtil.Quaternion();
  this.previousFilterQ.copy(this.filterQ);

  // Orientation based on the accelerometer.
  this.accelQ = new MathUtil.Quaternion();
  // Whether or not the orientation has been initialized.
  this.isOrientationInitialized = false;
  // Running estimate of gravity based on the current orientation.
  this.estimatedGravity = new MathUtil.Vector3();
  // Measured gravity based on accelerometer.
  this.measuredGravity = new MathUtil.Vector3();

  // Debug only quaternion of gyro-based orientation.
  this.gyroIntegralQ = new MathUtil.Quaternion();
}

ComplementaryFilter.prototype.addAccelMeasurement = function(vector, timestampS) {
  this.currentAccelMeasurement.set(vector, timestampS);
};

ComplementaryFilter.prototype.addGyroMeasurement = function(vector, timestampS) {
  this.currentGyroMeasurement.set(vector, timestampS);

  var deltaT = timestampS - this.previousGyroMeasurement.timestampS;
  if (Util.isTimestampDeltaValid(deltaT)) {
    this.run_();
  }

  this.previousGyroMeasurement.copy(this.currentGyroMeasurement);
};

ComplementaryFilter.prototype.run_ = function() {

  if (!this.isOrientationInitialized) {
    this.accelQ = this.accelToQuaternion_(this.currentAccelMeasurement.sample);
    this.previousFilterQ.copy(this.accelQ);
    this.isOrientationInitialized = true;
    return;
  }

  var deltaT = this.currentGyroMeasurement.timestampS -
      this.previousGyroMeasurement.timestampS;

  // Convert gyro rotation vector to a quaternion delta.
  var gyroDeltaQ = this.gyroToQuaternionDelta_(this.currentGyroMeasurement.sample, deltaT);
  this.gyroIntegralQ.multiply(gyroDeltaQ);

  // filter_1 = K * (filter_0 + gyro * dT) + (1 - K) * accel.
  this.filterQ.copy(this.previousFilterQ);
  this.filterQ.multiply(gyroDeltaQ);

  // Calculate the delta between the current estimated gravity and the real
  // gravity vector from accelerometer.
  var invFilterQ = new MathUtil.Quaternion();
  invFilterQ.copy(this.filterQ);
  invFilterQ.inverse();

  this.estimatedGravity.set(0, 0, -1);
  this.estimatedGravity.applyQuaternion(invFilterQ);
  this.estimatedGravity.normalize();

  this.measuredGravity.copy(this.currentAccelMeasurement.sample);
  this.measuredGravity.normalize();

  // Compare estimated gravity with measured gravity, get the delta quaternion
  // between the two.
  var deltaQ = new MathUtil.Quaternion();
  deltaQ.setFromUnitVectors(this.estimatedGravity, this.measuredGravity);
  deltaQ.inverse();

  if (Util.isDebug()) {
    console.log('Delta: %d deg, G_est: (%s, %s, %s), G_meas: (%s, %s, %s)',
                MathUtil.radToDeg * Util.getQuaternionAngle(deltaQ),
                (this.estimatedGravity.x).toFixed(1),
                (this.estimatedGravity.y).toFixed(1),
                (this.estimatedGravity.z).toFixed(1),
                (this.measuredGravity.x).toFixed(1),
                (this.measuredGravity.y).toFixed(1),
                (this.measuredGravity.z).toFixed(1));
  }

  // Calculate the SLERP target: current orientation plus the measured-estimated
  // quaternion delta.
  var targetQ = new MathUtil.Quaternion();
  targetQ.copy(this.filterQ);
  targetQ.multiply(deltaQ);

  // SLERP factor: 0 is pure gyro, 1 is pure accel.
  this.filterQ.slerp(targetQ, 1 - this.kFilter);

  this.previousFilterQ.copy(this.filterQ);
};

ComplementaryFilter.prototype.getOrientation = function() {
  return this.filterQ;
};

ComplementaryFilter.prototype.accelToQuaternion_ = function(accel) {
  var normAccel = new MathUtil.Vector3();
  normAccel.copy(accel);
  normAccel.normalize();
  var quat = new MathUtil.Quaternion();
  quat.setFromUnitVectors(new MathUtil.Vector3(0, 0, -1), normAccel);
  quat.inverse();
  return quat;
};

ComplementaryFilter.prototype.gyroToQuaternionDelta_ = function(gyro, dt) {
  // Extract axis and angle from the gyroscope data.
  var quat = new MathUtil.Quaternion();
  var axis = new MathUtil.Vector3();
  axis.copy(gyro);
  axis.normalize();
  quat.setFromAxisAngle(axis, gyro.length() * dt);
  return quat;
};


module.exports = ComplementaryFilter;

},{"../math-util.js":14,"../util.js":22,"./sensor-sample.js":20}],18:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var ComplementaryFilter = _dereq_('./complementary-filter.js');
var PosePredictor = _dereq_('./pose-predictor.js');
var TouchPanner = _dereq_('../touch-panner.js');
var MathUtil = _dereq_('../math-util.js');
var Util = _dereq_('../util.js');

/**
 * The pose sensor, implemented using DeviceMotion APIs.
 */
function FusionPoseSensor() {
  this.deviceId = 'webvr-polyfill:fused';
  this.deviceName = 'VR Position Device (webvr-polyfill:fused)';

  this.accelerometer = new MathUtil.Vector3();
  this.gyroscope = new MathUtil.Vector3();

  this.start();

  this.filter = new ComplementaryFilter(WebVRConfig.K_FILTER);
  this.posePredictor = new PosePredictor(WebVRConfig.PREDICTION_TIME_S);
  this.touchPanner = new TouchPanner();

  this.filterToWorldQ = new MathUtil.Quaternion();

  // Set the filter to world transform, depending on OS.
  if (Util.isIOS()) {
    this.filterToWorldQ.setFromAxisAngle(new MathUtil.Vector3(1, 0, 0), Math.PI / 2);
  } else {
    this.filterToWorldQ.setFromAxisAngle(new MathUtil.Vector3(1, 0, 0), -Math.PI / 2);
  }

  this.inverseWorldToScreenQ = new MathUtil.Quaternion();
  this.worldToScreenQ = new MathUtil.Quaternion();
  this.originalPoseAdjustQ = new MathUtil.Quaternion();
  this.originalPoseAdjustQ.setFromAxisAngle(new MathUtil.Vector3(0, 0, 1),
                                           -window.orientation * Math.PI / 180);

  this.setScreenTransform_();
  // Adjust this filter for being in landscape mode.
  if (Util.isLandscapeMode()) {
    this.filterToWorldQ.multiply(this.inverseWorldToScreenQ);
  }

  // Keep track of a reset transform for resetSensor.
  this.resetQ = new MathUtil.Quaternion();

  this.isFirefoxAndroid = Util.isFirefoxAndroid();
  this.isIOS = Util.isIOS();

  this.orientationOut_ = new Float32Array(4);
}

FusionPoseSensor.prototype.getPosition = function() {
  // This PoseSensor doesn't support position
  return null;
};

FusionPoseSensor.prototype.getOrientation = function() {
  // Convert from filter space to the the same system used by the
  // deviceorientation event.
  var orientation = this.filter.getOrientation();

  // Predict orientation.
  this.predictedQ = this.posePredictor.getPrediction(orientation, this.gyroscope, this.previousTimestampS);

  // Convert to THREE coordinate system: -Z forward, Y up, X right.
  var out = new MathUtil.Quaternion();
  out.copy(this.filterToWorldQ);
  out.multiply(this.resetQ);
  if (!WebVRConfig.TOUCH_PANNER_DISABLED) {
    out.multiply(this.touchPanner.getOrientation());
  }
  out.multiply(this.predictedQ);
  out.multiply(this.worldToScreenQ);

  // Handle the yaw-only case.
  if (WebVRConfig.YAW_ONLY) {
    // Make a quaternion that only turns around the Y-axis.
    out.x = 0;
    out.z = 0;
    out.normalize();
  }

  this.orientationOut_[0] = out.x;
  this.orientationOut_[1] = out.y;
  this.orientationOut_[2] = out.z;
  this.orientationOut_[3] = out.w;
  return this.orientationOut_;
};

FusionPoseSensor.prototype.resetPose = function() {
  // Reduce to inverted yaw-only.
  this.resetQ.copy(this.filter.getOrientation());
  this.resetQ.x = 0;
  this.resetQ.y = 0;
  this.resetQ.z *= -1;
  this.resetQ.normalize();

  // Take into account extra transformations in landscape mode.
  if (Util.isLandscapeMode()) {
    this.resetQ.multiply(this.inverseWorldToScreenQ);
  }

  // Take into account original pose.
  this.resetQ.multiply(this.originalPoseAdjustQ);

  if (!WebVRConfig.TOUCH_PANNER_DISABLED) {
    this.touchPanner.resetSensor();
  }
};

FusionPoseSensor.prototype.onDeviceMotion_ = function(deviceMotion) {
  this.updateDeviceMotion_(deviceMotion);
};

FusionPoseSensor.prototype.updateDeviceMotion_ = function(deviceMotion) {
  var accGravity = deviceMotion.accelerationIncludingGravity;
  var rotRate = deviceMotion.rotationRate;
  var timestampS = deviceMotion.timeStamp / 1000;

  // Firefox Android timeStamp returns one thousandth of a millisecond.
  if (this.isFirefoxAndroid) {
    timestampS /= 1000;
  }

  var deltaS = timestampS - this.previousTimestampS;
  if (deltaS <= Util.MIN_TIMESTEP || deltaS > Util.MAX_TIMESTEP) {
    console.warn('Invalid timestamps detected. Time step between successive ' +
                 'gyroscope sensor samples is very small or not monotonic');
    this.previousTimestampS = timestampS;
    return;
  }
  this.accelerometer.set(-accGravity.x, -accGravity.y, -accGravity.z);
  this.gyroscope.set(rotRate.alpha, rotRate.beta, rotRate.gamma);

  // With iOS and Firefox Android, rotationRate is reported in degrees,
  // so we first convert to radians.
  if (this.isIOS || this.isFirefoxAndroid) {
    this.gyroscope.multiplyScalar(Math.PI / 180);
  }

  this.filter.addAccelMeasurement(this.accelerometer, timestampS);
  this.filter.addGyroMeasurement(this.gyroscope, timestampS);

  this.previousTimestampS = timestampS;
};

FusionPoseSensor.prototype.onOrientationChange_ = function(screenOrientation) {
  this.setScreenTransform_();
};

/**
 * This is only needed if we are in an cross origin iframe on iOS to work around
 * this issue: https://bugs.webkit.org/show_bug.cgi?id=152299.
 */
FusionPoseSensor.prototype.onMessage_ = function(event) {
  var message = event.data;

  // If there's no message type, ignore it.
  if (!message || !message.type) {
    return;
  }

  // Ignore all messages that aren't devicemotion.
  var type = message.type.toLowerCase();
  if (type !== 'devicemotion') {
    return;
  }

  // Update device motion.
  this.updateDeviceMotion_(message.deviceMotionEvent);
};

FusionPoseSensor.prototype.setScreenTransform_ = function() {
  this.worldToScreenQ.set(0, 0, 0, 1);
  switch (window.orientation) {
    case 0:
      break;
    case 90:
      this.worldToScreenQ.setFromAxisAngle(new MathUtil.Vector3(0, 0, 1), -Math.PI / 2);
      break;
    case -90:
      this.worldToScreenQ.setFromAxisAngle(new MathUtil.Vector3(0, 0, 1), Math.PI / 2);
      break;
    case 180:
      // TODO.
      break;
  }
  this.inverseWorldToScreenQ.copy(this.worldToScreenQ);
  this.inverseWorldToScreenQ.inverse();
};

FusionPoseSensor.prototype.start = function() {
  this.onDeviceMotionCallback_ = this.onDeviceMotion_.bind(this);
  this.onOrientationChangeCallback_ = this.onOrientationChange_.bind(this);
  this.onMessageCallback_ = this.onMessage_.bind(this);

  // Only listen for postMessages if we're in an iOS and embedded inside a cross
  // domain IFrame. In this case, the polyfill can still work if the containing
  // page sends synthetic devicemotion events. For an example of this, see
  // iframe-message-sender.js in VR View: https://goo.gl/XDtvFZ
  if (Util.isIOS() && Util.isInsideCrossDomainIFrame()) {
    window.addEventListener('message', this.onMessageCallback_);
  }
  window.addEventListener('orientationchange', this.onOrientationChangeCallback_);
  window.addEventListener('devicemotion', this.onDeviceMotionCallback_);
};

FusionPoseSensor.prototype.stop = function() {
  window.removeEventListener('devicemotion', this.onDeviceMotionCallback_);
  window.removeEventListener('orientationchange', this.onOrientationChangeCallback_);
  window.removeEventListener('message', this.onMessageCallback_);
};

module.exports = FusionPoseSensor;

},{"../math-util.js":14,"../touch-panner.js":21,"../util.js":22,"./complementary-filter.js":17,"./pose-predictor.js":19}],19:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var MathUtil = _dereq_('../math-util');
var Util = _dereq_('../util');

/**
 * Given an orientation and the gyroscope data, predicts the future orientation
 * of the head. This makes rendering appear faster.
 *
 * Also see: http://msl.cs.uiuc.edu/~lavalle/papers/LavYerKatAnt14.pdf
 *
 * @param {Number} predictionTimeS time from head movement to the appearance of
 * the corresponding image.
 */
function PosePredictor(predictionTimeS) {
  this.predictionTimeS = predictionTimeS;

  // The quaternion corresponding to the previous state.
  this.previousQ = new MathUtil.Quaternion();
  // Previous time a prediction occurred.
  this.previousTimestampS = null;

  // The delta quaternion that adjusts the current pose.
  this.deltaQ = new MathUtil.Quaternion();
  // The output quaternion.
  this.outQ = new MathUtil.Quaternion();
}

PosePredictor.prototype.getPrediction = function(currentQ, gyro, timestampS) {
  if (!this.previousTimestampS) {
    this.previousQ.copy(currentQ);
    this.previousTimestampS = timestampS;
    return currentQ;
  }

  // Calculate axis and angle based on gyroscope rotation rate data.
  var axis = new MathUtil.Vector3();
  axis.copy(gyro);
  axis.normalize();

  var angularSpeed = gyro.length();

  // If we're rotating slowly, don't do prediction.
  if (angularSpeed < MathUtil.degToRad * 20) {
    if (Util.isDebug()) {
      console.log('Moving slowly, at %s deg/s: no prediction',
                  (MathUtil.radToDeg * angularSpeed).toFixed(1));
    }
    this.outQ.copy(currentQ);
    this.previousQ.copy(currentQ);
    return this.outQ;
  }

  // Get the predicted angle based on the time delta and latency.
  var deltaT = timestampS - this.previousTimestampS;
  var predictAngle = angularSpeed * this.predictionTimeS;

  this.deltaQ.setFromAxisAngle(axis, predictAngle);
  this.outQ.copy(this.previousQ);
  this.outQ.multiply(this.deltaQ);

  this.previousQ.copy(currentQ);
  this.previousTimestampS = timestampS;

  return this.outQ;
};


module.exports = PosePredictor;

},{"../math-util":14,"../util":22}],20:[function(_dereq_,module,exports){
function SensorSample(sample, timestampS) {
  this.set(sample, timestampS);
};

SensorSample.prototype.set = function(sample, timestampS) {
  this.sample = sample;
  this.timestampS = timestampS;
};

SensorSample.prototype.copy = function(sensorSample) {
  this.set(sensorSample.sample, sensorSample.timestampS);
};

module.exports = SensorSample;

},{}],21:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var MathUtil = _dereq_('./math-util.js');
var Util = _dereq_('./util.js');

var ROTATE_SPEED = 0.5;
/**
 * Provides a quaternion responsible for pre-panning the scene before further
 * transformations due to device sensors.
 */
function TouchPanner() {
  window.addEventListener('touchstart', this.onTouchStart_.bind(this));
  window.addEventListener('touchmove', this.onTouchMove_.bind(this));
  window.addEventListener('touchend', this.onTouchEnd_.bind(this));

  this.isTouching = false;
  this.rotateStart = new MathUtil.Vector2();
  this.rotateEnd = new MathUtil.Vector2();
  this.rotateDelta = new MathUtil.Vector2();

  this.theta = 0;
  this.orientation = new MathUtil.Quaternion();
}

TouchPanner.prototype.getOrientation = function() {
  this.orientation.setFromEulerXYZ(0, 0, this.theta);
  return this.orientation;
};

TouchPanner.prototype.resetSensor = function() {
  this.theta = 0;
};

TouchPanner.prototype.onTouchStart_ = function(e) {
  // Only respond if there is exactly one touch.
  if (e.touches.length != 1) {
    return;
  }
  this.rotateStart.set(e.touches[0].pageX, e.touches[0].pageY);
  this.isTouching = true;
};

TouchPanner.prototype.onTouchMove_ = function(e) {
  if (!this.isTouching) {
    return;
  }
  this.rotateEnd.set(e.touches[0].pageX, e.touches[0].pageY);
  this.rotateDelta.subVectors(this.rotateEnd, this.rotateStart);
  this.rotateStart.copy(this.rotateEnd);

  // On iOS, direction is inverted.
  if (Util.isIOS()) {
    this.rotateDelta.x *= -1;
  }

  var element = document.body;
  this.theta += 2 * Math.PI * this.rotateDelta.x / element.clientWidth * ROTATE_SPEED;
};

TouchPanner.prototype.onTouchEnd_ = function(e) {
  this.isTouching = false;
};

module.exports = TouchPanner;

},{"./math-util.js":14,"./util.js":22}],22:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var objectAssign = _dereq_('object-assign');

var Util = window.Util || {};

Util.MIN_TIMESTEP = 0.001;
Util.MAX_TIMESTEP = 1;

Util.base64 = function(mimeType, base64) {
  return 'data:' + mimeType + ';base64,' + base64;
};

Util.clamp = function(value, min, max) {
  return Math.min(Math.max(min, value), max);
};

Util.lerp = function(a, b, t) {
  return a + ((b - a) * t);
};

Util.isIOS = (function() {
  var isIOS = /iPad|iPhone|iPod/.test(navigator.platform);
  return function() {
    return isIOS;
  };
})();

Util.isSafari = (function() {
  var isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
  return function() {
    return isSafari;
  };
})();

Util.isFirefoxAndroid = (function() {
  var isFirefoxAndroid = navigator.userAgent.indexOf('Firefox') !== -1 &&
      navigator.userAgent.indexOf('Android') !== -1;
  return function() {
    return isFirefoxAndroid;
  };
})();

Util.isLandscapeMode = function() {
  return (window.orientation == 90 || window.orientation == -90);
};

// Helper method to validate the time steps of sensor timestamps.
Util.isTimestampDeltaValid = function(timestampDeltaS) {
  if (isNaN(timestampDeltaS)) {
    return false;
  }
  if (timestampDeltaS <= Util.MIN_TIMESTEP) {
    return false;
  }
  if (timestampDeltaS > Util.MAX_TIMESTEP) {
    return false;
  }
  return true;
};

Util.getScreenWidth = function() {
  return Math.max(window.screen.width, window.screen.height) *
      window.devicePixelRatio;
};

Util.getScreenHeight = function() {
  return Math.min(window.screen.width, window.screen.height) *
      window.devicePixelRatio;
};

Util.requestFullscreen = function(element) {
  if (element.requestFullscreen) {
    element.requestFullscreen();
  } else if (element.webkitRequestFullscreen) {
    element.webkitRequestFullscreen();
  } else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if (element.msRequestFullscreen) {
    element.msRequestFullscreen();
  } else {
    return false;
  }

  return true;
};

Util.exitFullscreen = function() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  } else {
    return false;
  }

  return true;
};

Util.getFullscreenElement = function() {
  return document.fullscreenElement ||
      document.webkitFullscreenElement ||
      document.mozFullScreenElement ||
      document.msFullscreenElement;
};

Util.linkProgram = function(gl, vertexSource, fragmentSource, attribLocationMap) {
  // No error checking for brevity.
  var vertexShader = gl.createShader(gl.VERTEX_SHADER);
  gl.shaderSource(vertexShader, vertexSource);
  gl.compileShader(vertexShader);

  var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
  gl.shaderSource(fragmentShader, fragmentSource);
  gl.compileShader(fragmentShader);

  var program = gl.createProgram();
  gl.attachShader(program, vertexShader);
  gl.attachShader(program, fragmentShader);

  for (var attribName in attribLocationMap)
    gl.bindAttribLocation(program, attribLocationMap[attribName], attribName);

  gl.linkProgram(program);

  gl.deleteShader(vertexShader);
  gl.deleteShader(fragmentShader);

  return program;
};

Util.getProgramUniforms = function(gl, program) {
  var uniforms = {};
  var uniformCount = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
  var uniformName = '';
  for (var i = 0; i < uniformCount; i++) {
    var uniformInfo = gl.getActiveUniform(program, i);
    uniformName = uniformInfo.name.replace('[0]', '');
    uniforms[uniformName] = gl.getUniformLocation(program, uniformName);
  }
  return uniforms;
};

Util.orthoMatrix = function (out, left, right, bottom, top, near, far) {
  var lr = 1 / (left - right),
      bt = 1 / (bottom - top),
      nf = 1 / (near - far);
  out[0] = -2 * lr;
  out[1] = 0;
  out[2] = 0;
  out[3] = 0;
  out[4] = 0;
  out[5] = -2 * bt;
  out[6] = 0;
  out[7] = 0;
  out[8] = 0;
  out[9] = 0;
  out[10] = 2 * nf;
  out[11] = 0;
  out[12] = (left + right) * lr;
  out[13] = (top + bottom) * bt;
  out[14] = (far + near) * nf;
  out[15] = 1;
  return out;
};

Util.isMobile = function() {
  var check = false;
  (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
  return check;
};

Util.extend = objectAssign;

Util.safariCssSizeWorkaround = function(canvas) {
  // TODO(smus): Remove this workaround when Safari for iOS is fixed.
  // iOS only workaround (for https://bugs.webkit.org/show_bug.cgi?id=152556).
  //
  // "To the last I grapple with thee;
  //  from hell's heart I stab at thee;
  //  for hate's sake I spit my last breath at thee."
  // -- Moby Dick, by Herman Melville
  if (Util.isIOS()) {
    var width = canvas.style.width;
    var height = canvas.style.height;
    canvas.style.width = (parseInt(width) + 1) + 'px';
    canvas.style.height = (parseInt(height)) + 'px';
    setTimeout(function() {
      canvas.style.width = width;
      canvas.style.height = height;
    }, 100);
  }

  // Debug only.
  window.Util = Util;
  window.canvas = canvas;
};

Util.isDebug = function() {
  return Util.getQueryParameter('debug');
};

Util.getQueryParameter = function(name) {
  var name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
  var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
      results = regex.exec(location.search);
  return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
};

Util.frameDataFromPose = (function() {
  var piOver180 = Math.PI / 180.0;
  var rad45 = Math.PI * 0.25;

  // Borrowed from glMatrix.
  function mat4_perspectiveFromFieldOfView(out, fov, near, far) {
    var upTan = Math.tan(fov ? (fov.upDegrees * piOver180) : rad45),
    downTan = Math.tan(fov ? (fov.downDegrees * piOver180) : rad45),
    leftTan = Math.tan(fov ? (fov.leftDegrees * piOver180) : rad45),
    rightTan = Math.tan(fov ? (fov.rightDegrees * piOver180) : rad45),
    xScale = 2.0 / (leftTan + rightTan),
    yScale = 2.0 / (upTan + downTan);

    out[0] = xScale;
    out[1] = 0.0;
    out[2] = 0.0;
    out[3] = 0.0;
    out[4] = 0.0;
    out[5] = yScale;
    out[6] = 0.0;
    out[7] = 0.0;
    out[8] = -((leftTan - rightTan) * xScale * 0.5);
    out[9] = ((upTan - downTan) * yScale * 0.5);
    out[10] = far / (near - far);
    out[11] = -1.0;
    out[12] = 0.0;
    out[13] = 0.0;
    out[14] = (far * near) / (near - far);
    out[15] = 0.0;
    return out;
  }

  function mat4_fromRotationTranslation(out, q, v) {
    // Quaternion math
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        xy = x * y2,
        xz = x * z2,
        yy = y * y2,
        yz = y * z2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - (yy + zz);
    out[1] = xy + wz;
    out[2] = xz - wy;
    out[3] = 0;
    out[4] = xy - wz;
    out[5] = 1 - (xx + zz);
    out[6] = yz + wx;
    out[7] = 0;
    out[8] = xz + wy;
    out[9] = yz - wx;
    out[10] = 1 - (xx + yy);
    out[11] = 0;
    out[12] = v[0];
    out[13] = v[1];
    out[14] = v[2];
    out[15] = 1;

    return out;
  };

  function mat4_translate(out, a, v) {
    var x = v[0], y = v[1], z = v[2],
        a00, a01, a02, a03,
        a10, a11, a12, a13,
        a20, a21, a22, a23;

    if (a === out) {
      out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
      out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
      out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
      out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
    } else {
      a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
      a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
      a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];

      out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
      out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
      out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;

      out[12] = a00 * x + a10 * y + a20 * z + a[12];
      out[13] = a01 * x + a11 * y + a21 * z + a[13];
      out[14] = a02 * x + a12 * y + a22 * z + a[14];
      out[15] = a03 * x + a13 * y + a23 * z + a[15];
    }

    return out;
  };

  function mat4_invert(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32,

        // Calculate the determinant
        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;

    if (!det) {
      return null;
    }
    det = 1.0 / det;

    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;

    return out;
  };

  var defaultOrientation = new Float32Array([0, 0, 0, 1]);
  var defaultPosition = new Float32Array([0, 0, 0]);

  function updateEyeMatrices(projection, view, pose, parameters, vrDisplay) {
    mat4_perspectiveFromFieldOfView(projection, parameters ? parameters.fieldOfView : null, vrDisplay.depthNear, vrDisplay.depthFar);

    var orientation = pose.orientation || defaultOrientation;
    var position = pose.position || defaultPosition;

    mat4_fromRotationTranslation(view, orientation, position);
    if (parameters)
      mat4_translate(view, view, parameters.offset);
    mat4_invert(view, view);
  }

  return function(frameData, pose, vrDisplay) {
    if (!frameData || !pose)
      return false;

    frameData.pose = pose;
    frameData.timestamp = pose.timestamp;

    updateEyeMatrices(
        frameData.leftProjectionMatrix, frameData.leftViewMatrix,
        pose, vrDisplay.getEyeParameters("left"), vrDisplay);
    updateEyeMatrices(
        frameData.rightProjectionMatrix, frameData.rightViewMatrix,
        pose, vrDisplay.getEyeParameters("right"), vrDisplay);

    return true;
  };
})();

Util.isInsideCrossDomainIFrame = function() {
  var isFramed = (window.self !== window.top);
  var refDomain = Util.getDomainFromUrl(document.referrer);
  var thisDomain = Util.getDomainFromUrl(window.location.href);

  return isFramed && (refDomain !== thisDomain);
};

// From http://stackoverflow.com/a/23945027.
Util.getDomainFromUrl = function(url) {
  var domain;
  // Find & remove protocol (http, ftp, etc.) and get domain.
  if (url.indexOf("://") > -1) {
    domain = url.split('/')[2];
  }
  else {
    domain = url.split('/')[0];
  }

  //find & remove port number
  domain = domain.split(':')[0];

  return domain;
}

module.exports = Util;

},{"object-assign":2}],23:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var DeviceInfo = _dereq_('./device-info.js');
var EventEmitter3 = _dereq_('eventemitter3');
var Util = _dereq_('./util.js');

var DEFAULT_VIEWER = 'CardboardV1';
var VIEWER_KEY = 'WEBVR_CARDBOARD_VIEWER';
var CLASS_NAME = 'webvr-polyfill-viewer-selector';

/**
 * Creates a viewer selector with the options specified. Supports being shown
 * and hidden. Generates events when viewer parameters change. Also supports
 * saving the currently selected index in localStorage.
 */
function ViewerSelector() {
  // Try to load the selected key from local storage. If none exists, use the
  // default key.
  try {
    this.selectedKey = localStorage.getItem(VIEWER_KEY) || DEFAULT_VIEWER;
  } catch (error) {
    console.error('Failed to load viewer profile: %s', error);
  }
  this.dialog = this.createDialog_(DeviceInfo.Viewers);
  this.root = null;
}
ViewerSelector.prototype = new EventEmitter3();

ViewerSelector.prototype.show = function(root) {
  this.root = root;

  root.appendChild(this.dialog);

  // Ensure the currently selected item is checked.
  var selected = this.dialog.querySelector('#' + this.selectedKey);
  selected.checked = true;

  // Show the UI.
  this.dialog.style.display = 'block';
};

ViewerSelector.prototype.hide = function() {
  if (this.root && this.root.contains(this.dialog)) {
    this.root.removeChild(this.dialog);
  }
  this.dialog.style.display = 'none';
};

ViewerSelector.prototype.getCurrentViewer = function() {
  return DeviceInfo.Viewers[this.selectedKey];
};

ViewerSelector.prototype.getSelectedKey_ = function() {
  var input = this.dialog.querySelector('input[name=field]:checked');
  if (input) {
    return input.id;
  }
  return null;
};

ViewerSelector.prototype.onSave_ = function() {
  this.selectedKey = this.getSelectedKey_();
  if (!this.selectedKey || !DeviceInfo.Viewers[this.selectedKey]) {
    console.error('ViewerSelector.onSave_: this should never happen!');
    return;
  }

  this.emit('change', DeviceInfo.Viewers[this.selectedKey]);

  // Attempt to save the viewer profile, but fails in private mode.
  try {
    localStorage.setItem(VIEWER_KEY, this.selectedKey);
  } catch(error) {
    console.error('Failed to save viewer profile: %s', error);
  }
  this.hide();
};

/**
 * Creates the dialog.
 */
ViewerSelector.prototype.createDialog_ = function(options) {
  var container = document.createElement('div');
  container.classList.add(CLASS_NAME);
  container.style.display = 'none';
  // Create an overlay that dims the background, and which goes away when you
  // tap it.
  var overlay = document.createElement('div');
  var s = overlay.style;
  s.position = 'fixed';
  s.left = 0;
  s.top = 0;
  s.width = '100%';
  s.height = '100%';
  s.background = 'rgba(0, 0, 0, 0.3)';
  overlay.addEventListener('click', this.hide.bind(this));

  var width = 280;
  var dialog = document.createElement('div');
  var s = dialog.style;
  s.boxSizing = 'border-box';
  s.position = 'fixed';
  s.top = '24px';
  s.left = '50%';
  s.marginLeft = (-width/2) + 'px';
  s.width = width + 'px';
  s.padding = '24px';
  s.overflow = 'hidden';
  s.background = '#fafafa';
  s.fontFamily = "'Roboto', sans-serif";
  s.boxShadow = '0px 5px 20px #666';

  dialog.appendChild(this.createH1_('Select your viewer'));
  for (var id in options) {
    dialog.appendChild(this.createChoice_(id, options[id].label));
  }
  dialog.appendChild(this.createButton_('Save', this.onSave_.bind(this)));

  container.appendChild(overlay);
  container.appendChild(dialog);

  return container;
};

ViewerSelector.prototype.createH1_ = function(name) {
  var h1 = document.createElement('h1');
  var s = h1.style;
  s.color = 'black';
  s.fontSize = '20px';
  s.fontWeight = 'bold';
  s.marginTop = 0;
  s.marginBottom = '24px';
  h1.innerHTML = name;
  return h1;
};

ViewerSelector.prototype.createChoice_ = function(id, name) {
  /*
  <div class="choice">
  <input id="v1" type="radio" name="field" value="v1">
  <label for="v1">Cardboard V1</label>
  </div>
  */
  var div = document.createElement('div');
  div.style.marginTop = '8px';
  div.style.color = 'black';

  var input = document.createElement('input');
  input.style.fontSize = '30px';
  input.setAttribute('id', id);
  input.setAttribute('type', 'radio');
  input.setAttribute('value', id);
  input.setAttribute('name', 'field');

  var label = document.createElement('label');
  label.style.marginLeft = '4px';
  label.setAttribute('for', id);
  label.innerHTML = name;

  div.appendChild(input);
  div.appendChild(label);

  return div;
};

ViewerSelector.prototype.createButton_ = function(label, onclick) {
  var button = document.createElement('button');
  button.innerHTML = label;
  var s = button.style;
  s.float = 'right';
  s.textTransform = 'uppercase';
  s.color = '#1094f7';
  s.fontSize = '14px';
  s.letterSpacing = 0;
  s.border = 0;
  s.background = 'none';
  s.marginTop = '16px';

  button.addEventListener('click', onclick);

  return button;
};

module.exports = ViewerSelector;

},{"./device-info.js":8,"./util.js":22,"eventemitter3":1}],24:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Util = _dereq_('./util.js');

/**
 * Android and iOS compatible wakelock implementation.
 *
 * Refactored thanks to dkovalev@.
 */
function AndroidWakeLock() {
  var video = document.createElement('video');

  video.addEventListener('ended', function() {
    video.play();
  });

  this.request = function() {
    if (video.paused) {
      // Base64 version of videos_src/no-sleep-120s.mp4.
      video.src = Util.base64('video/mp4', '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');
      video.play();
    }
  };

  this.release = function() {
    video.pause();
    video.src = '';
  };
}

function iOSWakeLock() {
  var timer = null;

  this.request = function() {
    if (!timer) {
      timer = setInterval(function() {
        window.location = window.location;
        setTimeout(window.stop, 0);
      }, 30000);
    }
  }

  this.release = function() {
    if (timer) {
      clearInterval(timer);
      timer = null;
    }
  }
}


function getWakeLock() {
  var userAgent = navigator.userAgent || navigator.vendor || window.opera;
  if (userAgent.match(/iPhone/i) || userAgent.match(/iPod/i)) {
    return iOSWakeLock;
  } else {
    return AndroidWakeLock;
  }
}

module.exports = getWakeLock();
},{"./util.js":22}],25:[function(_dereq_,module,exports){
/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Util = _dereq_('./util.js');
var CardboardVRDisplay = _dereq_('./cardboard-vr-display.js');
var MouseKeyboardVRDisplay = _dereq_('./mouse-keyboard-vr-display.js');
// Uncomment to add positional tracking via webcam.
//var WebcamPositionSensorVRDevice = require('./webcam-position-sensor-vr-device.js');
var VRDisplay = _dereq_('./base.js').VRDisplay;
var VRFrameData = _dereq_('./base.js').VRFrameData;
var HMDVRDevice = _dereq_('./base.js').HMDVRDevice;
var PositionSensorVRDevice = _dereq_('./base.js').PositionSensorVRDevice;
var VRDisplayHMDDevice = _dereq_('./display-wrappers.js').VRDisplayHMDDevice;
var VRDisplayPositionSensorDevice = _dereq_('./display-wrappers.js').VRDisplayPositionSensorDevice;

function WebVRPolyfill() {
  this.displays = [];
  this.devices = []; // For deprecated objects
  this.devicesPopulated = false;
  this.nativeWebVRAvailable = this.isWebVRAvailable();
  this.nativeLegacyWebVRAvailable = this.isDeprecatedWebVRAvailable();
  this.nativeGetVRDisplaysFunc = this.nativeWebVRAvailable ?
                                 navigator.getVRDisplays :
                                 null;

  if (!this.nativeLegacyWebVRAvailable) {
    this.enablePolyfill();
    if (WebVRConfig.ENABLE_DEPRECATED_API) {
      this.enableDeprecatedPolyfill();
    }
  }

  // Put a shim in place to update the API to 1.1 if needed.
  InstallWebVRSpecShim();
}

WebVRPolyfill.prototype.isWebVRAvailable = function() {
  return ('getVRDisplays' in navigator);
};

WebVRPolyfill.prototype.isDeprecatedWebVRAvailable = function() {
  return ('getVRDevices' in navigator) || ('mozGetVRDevices' in navigator);
};

WebVRPolyfill.prototype.populateDevices = function() {
  if (this.devicesPopulated) {
    return;
  }

  // Initialize our virtual VR devices.
  var vrDisplay = null;

  // Add a Cardboard VRDisplay on compatible mobile devices
  if (this.isCardboardCompatible()) {
    vrDisplay = new CardboardVRDisplay();
    this.displays.push(vrDisplay);

    // For backwards compatibility
    if (WebVRConfig.ENABLE_DEPRECATED_API) {
      this.devices.push(new VRDisplayHMDDevice(vrDisplay));
      this.devices.push(new VRDisplayPositionSensorDevice(vrDisplay));
    }
  }

  // Add a Mouse and Keyboard driven VRDisplay for desktops/laptops
  if (!this.isMobile() && !WebVRConfig.MOUSE_KEYBOARD_CONTROLS_DISABLED) {
    vrDisplay = new MouseKeyboardVRDisplay();
    this.displays.push(vrDisplay);

    // For backwards compatibility
    if (WebVRConfig.ENABLE_DEPRECATED_API) {
      this.devices.push(new VRDisplayHMDDevice(vrDisplay));
      this.devices.push(new VRDisplayPositionSensorDevice(vrDisplay));
    }
  }

  // Uncomment to add positional tracking via webcam.
  //if (!this.isMobile() && WebVRConfig.ENABLE_DEPRECATED_API) {
  //  positionDevice = new WebcamPositionSensorVRDevice();
  //  this.devices.push(positionDevice);
  //}

  this.devicesPopulated = true;
};

WebVRPolyfill.prototype.enablePolyfill = function() {
  // Provide navigator.getVRDisplays.
  navigator.getVRDisplays = this.getVRDisplays.bind(this);

  // Provide the VRDisplay object.
  window.VRDisplay = VRDisplay;

  // Provide navigator.vrEnabled.
  var self = this;
  Object.defineProperty(navigator, 'vrEnabled', {
    get: function () {
      return self.isCardboardCompatible() &&
          (self.isFullScreenAvailable() || Util.isIOS());
    }
  });

  if (!'VRFrameData' in window) {
    // Provide the VRFrameData object.
    window.VRFrameData = VRFrameData;
  }
};

WebVRPolyfill.prototype.enableDeprecatedPolyfill = function() {
  // Provide navigator.getVRDevices.
  navigator.getVRDevices = this.getVRDevices.bind(this);

  // Provide the CardboardHMDVRDevice and PositionSensorVRDevice objects.
  window.HMDVRDevice = HMDVRDevice;
  window.PositionSensorVRDevice = PositionSensorVRDevice;
};

WebVRPolyfill.prototype.getVRDisplays = function() {
  this.populateDevices();
  var polyfillDisplays = this.displays;

  if (this.nativeWebVRAvailable) {
    return this.nativeGetVRDisplaysFunc.call(navigator).then(function(nativeDisplays) {
      if (WebVRConfig.ALWAYS_APPEND_POLYFILL_DISPLAY) {
        return nativeDisplays.concat(polyfillDisplays);
      } else {
        return nativeDisplays.length > 0 ? nativeDisplays : polyfillDisplays;
      }
    });
  } else {
    return new Promise(function(resolve, reject) {
      try {
        resolve(polyfillDisplays);
      } catch (e) {
        reject(e);
      }
    });
  }
};

WebVRPolyfill.prototype.getVRDevices = function() {
  console.warn('getVRDevices is deprecated. Please update your code to use getVRDisplays instead.');
  var self = this;
  return new Promise(function(resolve, reject) {
    try {
      if (!self.devicesPopulated) {
        if (self.nativeWebVRAvailable) {
          return navigator.getVRDisplays(function(displays) {
            for (var i = 0; i < displays.length; ++i) {
              self.devices.push(new VRDisplayHMDDevice(displays[i]));
              self.devices.push(new VRDisplayPositionSensorDevice(displays[i]));
            }
            self.devicesPopulated = true;
            resolve(self.devices);
          }, reject);
        }

        if (self.nativeLegacyWebVRAvailable) {
          return (navigator.getVRDDevices || navigator.mozGetVRDevices)(function(devices) {
            for (var i = 0; i < devices.length; ++i) {
              if (devices[i] instanceof HMDVRDevice) {
                self.devices.push(devices[i]);
              }
              if (devices[i] instanceof PositionSensorVRDevice) {
                self.devices.push(devices[i]);
              }
            }
            self.devicesPopulated = true;
            resolve(self.devices);
          }, reject);
        }
      }

      self.populateDevices();
      resolve(self.devices);
    } catch (e) {
      reject(e);
    }
  });
};

/**
 * Determine if a device is mobile.
 */
WebVRPolyfill.prototype.isMobile = function() {
  return /Android/i.test(navigator.userAgent) ||
      /iPhone|iPad|iPod/i.test(navigator.userAgent);
};

WebVRPolyfill.prototype.isCardboardCompatible = function() {
  // For now, support all iOS and Android devices.
  // Also enable the WebVRConfig.FORCE_VR flag for debugging.
  return this.isMobile() || WebVRConfig.FORCE_ENABLE_VR;
};

WebVRPolyfill.prototype.isFullScreenAvailable = function() {
  return (document.fullscreenEnabled ||
          document.mozFullScreenEnabled ||
          document.webkitFullscreenEnabled ||
          false);
};

// Installs a shim that updates a WebVR 1.0 spec implementation to WebVR 1.1
function InstallWebVRSpecShim() {
  if ('VRDisplay' in window && !('VRFrameData' in window)) {
    // Provide the VRFrameData object.
    window.VRFrameData = VRFrameData;

    // A lot of Chrome builds don't have depthNear and depthFar, even
    // though they're in the WebVR 1.0 spec. Patch them in if they're not present.
    if(!('depthNear' in window.VRDisplay.prototype)) {
      window.VRDisplay.prototype.depthNear = 0.01;
    }

    if(!('depthFar' in window.VRDisplay.prototype)) {
      window.VRDisplay.prototype.depthFar = 10000.0;
    }

    window.VRDisplay.prototype.getFrameData = function(frameData) {
      return Util.frameDataFromPose(frameData, this.getPose(), this);
    }
  }
};

module.exports.WebVRPolyfill = WebVRPolyfill;

},{"./base.js":3,"./cardboard-vr-display.js":6,"./display-wrappers.js":9,"./mouse-keyboard-vr-display.js":15,"./util.js":22}]},{},[13])(13)
});