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Version: 3.8

class Provider

(Niantic.Lightship.AR.XRSubsystems.XRPersistentAnchorSubsystem.Provider)

Overview​

An abstract class to be implemented by providers of this subsystem.

	class Provider: SubsystemProvider< XRPersistentAnchorSubsystem > {
	public:
		// properties
	
		bool IsMockProvider;
		XRPersistentAnchorConfiguration CurrentConfiguration;

		// methods
	
		virtual abstract TrackableChanges<XRPersistentAnchor> GetChanges(
			XRPersistentAnchor defaultAnchor,
			Allocator allocator
		) = 0;
	
		virtual abstract bool GetNetworkStatusUpdate(out XRPersistentAnchorNetworkRequestStatus[] statuses) = 0;
		virtual abstract bool GetLocalizationStatusUpdate(out XRPersistentAnchorLocalizationStatus[] statuses) = 0;
		virtual abstract bool GetFrameDiagnosticsUpdate(out XRPersistentAnchorFrameDiagnostics[] statuses) = 0;
		virtual bool GetVpsSessionId(out string vpsSessionId);
		virtual bool TryAddAnchor(Pose pose, out XRPersistentAnchor anchor);
		virtual bool TryRemoveAnchor(TrackableId anchorId);
	
		virtual bool TryRestoreAnchor(
			XRPersistentAnchorPayload anchorPayload,
			out XRPersistentAnchor anchor
		);
	
		virtual bool TryLocalize(
			XRPersistentAnchorPayload anchorPayload,
			out XRPersistentAnchor anchor
		);
	};

Detailed Documentation​

An abstract class to be implemented by providers of this subsystem.

Properties​

CurrentConfiguration​

XRPersistentAnchorConfiguration CurrentConfiguration

Get or set configuration with <name>XRPersistentAnchorConfiguration</name>

Methods​

GetChanges​

virtual abstract TrackableChanges<XRPersistentAnchor> GetChanges(
		XRPersistentAnchor defaultAnchor,
		Allocator allocator
	) = 0

Invoked to get the changes to anchors (added, updated, and removed) since the last call to GetChanges(XRPersistentAnchor,Allocator).

    Parameters:

    defaultAnchor - The default anchor. This should be used to initialize the returned NativeArrays for backwards compatibility. See Allocator.

    allocator - An allocator to use for the NativeArrays in TrackableChanges<T>.

    Returns:

    Changes since the last call to GetChanges.

GetNetworkStatusUpdate​

virtual abstract bool GetNetworkStatusUpdate(out XRPersistentAnchorNetworkRequestStatus[] statuses) = 0

Get a list of network status updates, if any

    Returns:

    True if an update is present, false otherwise

GetLocalizationStatusUpdate​

virtual abstract bool GetLocalizationStatusUpdate(out XRPersistentAnchorLocalizationStatus[] statuses) = 0

Get a list of localization status updates, if any

    Returns:

    True if an update is present, false otherwise

GetFrameDiagnosticsUpdate​

virtual abstract bool GetFrameDiagnosticsUpdate(out XRPersistentAnchorFrameDiagnostics[] statuses) = 0

Get a list of frame diagnostics updates, if any

    Returns:

    True if an update is present, false otherwise

GetVpsSessionId​

virtual bool GetVpsSessionId(out string vpsSessionId)

Get the vps session id, if any

    Parameters:

    vpsSessionId - The vps session id as 32 character hexidecimal upper-case string.

    Returns:

    True if vps session id is present, false otherwise

TryAddAnchor​

virtual bool TryAddAnchor(Pose pose, out XRPersistentAnchor anchor)

Should create a new anchor with the provided pose.

    Parameters:

    pose - The pose, in session space, of the new anchor.

    anchor - The new anchor. Must be valid only if this method returns true.

    Returns:

    Should return true if the new anchor was added, otherwise false.

TryRemoveAnchor​

virtual bool TryRemoveAnchor(TrackableId anchorId)

Should remove an existing anchor with TrackableId anchorId.

    Parameters:

    anchorId - The id of an existing anchor to remove.

    Returns:

    Should return true if the anchor was removed, otherwise false. If the anchor does not exist, return false.

TryRestoreAnchor​

virtual bool TryRestoreAnchor(
		XRPersistentAnchorPayload anchorPayload,
		out XRPersistentAnchor anchor
	)

Tries to restore an anchor

    Parameters:

    anchorPayload - The payload to restore the anchor with

    anchor - The restored anchor

    Returns:

    Whether or not the restoration was successful