Class: DeviceOrientation

Extends

• ol.Object

Observable Properties

Name	Type	Settable	ol.ObjectEvent type	Description
alpha	number | undefined	no	change:alpha	The euler angle in radians of the device from the standard Z axis.
beta	number | undefined	no	change:beta	The euler angle in radians of the device from the planar X axis.
gamma	number | undefined	no	change:gamma	The euler angle in radians of the device from the planar Y axis.
heading	number | undefined	no	change:heading	The heading of the device relative to north, in radians, normalizing for different browser behavior.
tracking	boolean	yes	change:tracking	The status of tracking changes to alpha, beta and gamma. If true, changes are tracked and reported immediately.

Methods

bindTo(key, target, opt_targetKey){ol.ObjectAccessor} inherited experimental

src/ol/object.js, line 326

The bindTo method allows you to set up a two-way binding between a source and target object. The method returns an object with a transform method that you can use to provide from and to functions to transform values on the way from the source to the target and on the way back.

For example, if you had two map views (sourceView and targetView) and you wanted the target view to have double the resolution of the source view, you could transform the resolution on the way to and from the target with the following:

sourceView.bindTo('resolution', targetView)
  .transform(
    function(sourceResolution) {
      // from sourceView.resolution to targetView.resolution
      return 2 * sourceResolution;
    },
    function(targetResolution) {
      // from targetView.resolution to sourceView.resolution
      return targetResolution / 2;
    }
  );

Name	Type	Description
key	string	Key name.
target	ol.Object	Target.
targetKey	string	Target key.

changed() inherited experimental

src/ol/observable.js, line 52

Increases the revision counter and disptches a 'change' event.

Fires:

• change experimental

get(key){*} inherited experimental

src/ol/object.js, line 354

Gets a value.

Name	Type	Description
key	string	Key name.

Returns:

Value.

getAlpha(){number|undefined} experimental

src/ol/deviceorientation.js, line 145

Returns:

The euler angle in radians of the device from the standard Z axis.

getBeta(){number|undefined} experimental

src/ol/deviceorientation.js, line 161

Returns:

The euler angle in radians of the device from the planar X axis.

getGamma(){number|undefined} experimental

src/ol/deviceorientation.js, line 177

Returns:

The euler angle in radians of the device from the planar Y axis.

getHeading(){number|undefined} experimental

src/ol/deviceorientation.js, line 193

Returns:

The heading of the device relative to north, in radians, normalizing for different browser behavior.

getKeys(){Array.<string>} inherited experimental

src/ol/object.js, line 373

Get a list of object property names.

Returns:

List of property names.

getProperties(){Object.<string, *>} inherited experimental

src/ol/object.js, line 405

Get an object of all property names and values.

Returns:

Object.

getRevision(){number} inherited experimental

src/ol/observable.js, line 62

Returns:

Revision.

getTracking(){boolean} experimental

src/ol/deviceorientation.js, line 210

Are we tracking the device's orientation?

Returns:

The status of tracking changes to alpha, beta and gamma. If true, changes are tracked and reported immediately.

on(type, listener, opt_this){goog.events.Key} inherited

src/ol/observable.js, line 75

Listen for a certain type of event.

Name	Type	Description
type	string | Array.<string>	The event type or array of event types.
listener	function	The listener function.
this	Object	The object to use as this in listener.

Returns:

Unique key for the listener.

once(type, listener, opt_this){goog.events.Key} inherited

src/ol/observable.js, line 88

Listen once for a certain type of event.

Name	Type	Description
type	string | Array.<string>	The event type or array of event types.
listener	function	The listener function.
this	Object	The object to use as this in listener.

Returns:

Unique key for the listener.

set(key, value) inherited experimental

src/ol/object.js, line 437

Sets a value.

Name	Type	Description
key	string	Key name.
value	*	Value.

setProperties(values) inherited experimental

src/ol/object.js, line 456

Sets a collection of key-value pairs.

Name	Type	Description
values	Object.<string, *>	Values.

setTracking(tracking) experimental

src/ol/deviceorientation.js, line 244

Enable or disable tracking of DeviceOrientation events.

Name	Type	Description
tracking	boolean	The status of tracking changes to alpha, beta and gamma. If true, changes are tracked and reported immediately.

un(type, listener, opt_this) inherited

src/ol/observable.js, line 101

Unlisten for a certain type of event.

Name	Type	Description
type	string | Array.<string>	The event type or array of event types.
listener	function	The listener function.
this	Object	The object which was used as this by the listener.

unbind(key) inherited experimental

src/ol/object.js, line 470

Removes a binding. Unbinding will set the unbound property to the current value. The object will not be notified, as the value has not changed.

Name	Type	Description
key	string	Key name.

unbindAll() inherited experimental

src/ol/object.js, line 487

Removes all bindings.

unByKey(key) inherited

src/ol/observable.js, line 114

Removes an event listener using the key returned by on() or once(). Note that using the ol.Observable.unByKey static function is to be preferred.

Name	Type	Description
key	goog.events.Key	The key returned by on() or once().