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class ARLocationManager

(Niantic.Lightship.AR.LocationAR.ARLocationManager)

Overview​

The ARLocationManager is used to track ARLocations. ARLocations tie digital content to the physical world. When you start tracking an ARLocation, and aim your phone's camera at the physical location, the digital content that you child to the ARLocation will appear in the physical world.

	class ARLocationManager: Niantic.Lightship.AR.PersistentAnchors.ARPersistentAnchorManager {
	public:
		// fields
	
		 ARLocation[] ARLocations => GetComponentsInChildren<ARLocation>(true);
		 bool AutoTrack => _autoTrack;

		// properties
	
		int MaxLocationTrackingCount;

		// events
	
		event locationTrackingStateChanged();

		// methods
	
		void SetARLocations(params ARLocation[] arLocations);
		void StartTracking();
		void StopTracking();
		void TryUpdateTracking();

	protected:
		// methods
	
		override void OnEnable();
		virtual override void Start();
		override void OnDisable();
	};

Inherited Members​

public:
	// properties

	float InterpolationTimeSeconds;
	bool ContinuousLocalizationEnabled;
	bool InterpolationEnabled;
	bool TemporalFusionEnabled;
	int JpegCompressionQuality;
	bool TransformUpdateSmoothingEnabled;
	float InitialServiceRequestIntervalSeconds;
	float ContinuousServiceRequestIntervalSeconds;
	bool DiagnosticsEnabled;
	bool VpsDebuggerEnabled;
	bool GpsCorrectionForContinuousLocalization;
	float DeviceMappingLocalizationRequestIntervalSeconds;
	bool CloudLocalizationEnabled;
	bool DeviceMappingLocalizationEnabled;
	DeviceMappingType DeviceMappingType;
	bool DeviceMapDownloadEnabled;

	// events

	event arPersistentAnchorStateChanged();
	event DebugInfoUpdated();
	event VpsDebuggerEvent();

	// methods

	VpsGraphOperationError TryGetDevicePoseAsGeolocation(
		Pose pose,
		out double latitude,
		out double longitude,
		out double altitude,
		out double verticalAccuracy,
		out double horizontalAccuracy,
		out double heading
	);

	async Task RestartSubsystemAsync();
	IEnumerator RestartSubsystemAsyncCoroutine();
	bool GetVpsSessionId(out string vpsSessionId);

	bool TryCreateAnchor(
		Pose anchorLocalPose,
		out ARPersistentAnchor arPersistentAnchor
	);

	bool TryTrackAnchor(
		ARPersistentAnchorPayload payload,
		out ARPersistentAnchor arPersistentAnchor
	);

	void DestroyAnchor(ARPersistentAnchor arPersistentAnchor);

protected:
	// fields

	 override string gameObjectName => "Persistent Anchor";

	// methods

	override GameObject GetPrefab();
	override void OnEnable();
	override void OnBeforeStart();
	virtual void Start();
	override void OnDisable();
	override void OnDestroy();

	override void OnTrackablesChanged(
		List<ARPersistentAnchor> added,
		List<ARPersistentAnchor> updated,
		List<ARPersistentAnchor> removed
	);

Detailed Documentation​

The ARLocationManager is used to track ARLocations. ARLocations tie digital content to the physical world. When you start tracking an ARLocation, and aim your phone's camera at the physical location, the digital content that you child to the ARLocation will appear in the physical world.

Fields​

ARLocations​

ARLocation[] ARLocations => GetComponentsInChildren<ARLocation>(true)

Gets all of the ARLocations childed to the ARLocationManager.

AutoTrack​

bool AutoTrack => _autoTrack

Whether or not to automatically start tracking the selected ARLocation. If true, the location that is currently enabled will be automatically tracked on Start.

Properties​

MaxLocationTrackingCount​

int MaxLocationTrackingCount

Maximum number of locations that will be tracked by StartTracking. MaxLocationTrackingCount is always 1. Future versions of ARDK may support tracking more than one location at a time, but currently only one location at a time can be tracked.

Events​

locationTrackingStateChanged​

event locationTrackingStateChanged()

Called when the location tracking state has changed.

Methods​

SetARLocations​

void SetARLocations(params ARLocation[] arLocations)

Selects the AR Locations to try to track when StartTracking() is called. At most one of these locations will actually be tracked.

    Parameters:

    arLocations - The locations to try to track.

StartTracking​

void StartTracking()

Starts tracking locations specified by SetARLocations().

Currently only one location can be tracked at a time. In the future, the number of locations tracked will be limited to MaxAnchorTrackingCount.

Content authored as children of the ARLocation will be enabled once the ARLocation becomes tracked. This will create digital content in the physical world.

If no locations were specified in SetARLocations(), requests will be made to attempt to track nearby locations. In this case, multiple nearby locations may be targeted and the first one to successfully track will be used.

StopTracking​

void StopTracking()

Stops tracking the currently tracked location. This must be called before switching to a new location.

.. note::

Anchors are destroyed asynchronously, so there needs to be a small delay after calling StopTracking() before calling StartTracking().

TryUpdateTracking​

void TryUpdateTracking()

Tries to refresh the tracking of the currently tracked anchors.