Class XRObjectTrackingSubsystem

Base class for object tracking subsystems.

Inheritance

object

SubsystemWithProvider

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>

TrackingSubsystem<XRTrackedObject, XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>

XRObjectTrackingSubsystem

Implements

ISubsystem

Inherited Members

TrackingSubsystem<XRTrackedObject, XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.GetChanges(Allocator)

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.OnCreate()

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.OnStart()

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.OnStop()

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.OnDestroy()

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.subsystemDescriptor

SubsystemWithProvider<XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.provider

SubsystemWithProvider.Start()

SubsystemWithProvider.Stop()

SubsystemWithProvider.Destroy()

SubsystemWithProvider.OnDestroy()

SubsystemWithProvider.running

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: UnityEngine.XR.ARSubsystems

Assembly: Unity.XR.ARSubsystems.dll

Syntax

public class XRObjectTrackingSubsystem : TrackingSubsystem<XRTrackedObject, XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>, ISubsystem

Remarks

This subsystem allows real objects to be recognized in the environment. You must first specify a library of "reference objects" to search for. These reference objects are typically in a format specific to a particular implementation; see the documentation for the implementing subsystem for further instructions.

Constructors

XRObjectTrackingSubsystem()

Constructs an object tracking subsystem. Do not invoke directly; call Create on the XRObjectTrackingSubsystemDescriptor instead.

Declaration

public XRObjectTrackingSubsystem()

Properties

library

The library of reference objects for which to scan. This must be set to non-null before calling OnStart().

Declaration

public XRReferenceObjectLibrary library { get; set; }

Property Value

Type	Description
XRReferenceObjectLibrary

Exceptions

Type	Condition
ArgumentNullException	Thrown if you set the library to null while the subsystem is running.

Methods

GetChanges(Allocator)

Get changes to XRTrackedObjects (added, updated, and removed) since the last call to this method. The caller owns the memory allocated with allocator.

Declaration

public override sealed TrackableChanges<XRTrackedObject> GetChanges(Allocator allocator)

Parameters

Type	Name	Description
Allocator	allocator	The allocator to use for the returned arrays of changes.

Returns

Type	Description
TrackableChanges<XRTrackedObject>	A new TrackableChanges<T> allocated with allocator. The caller owns the memory and is responsible for calling Dispose on it.

Overrides

TrackingSubsystem<XRTrackedObject, XRObjectTrackingSubsystem, XRObjectTrackingSubsystemDescriptor, XRObjectTrackingSubsystem.Provider>.GetChanges(Allocator)

OnStart()

Starts scanning for the reference objects in library.

Declaration

protected override sealed void OnStart()

Overrides

UnityEngine.SubsystemsImplementation.SubsystemWithProvider<UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystem, UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystemDescriptor, UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystem.Provider>.OnStart()

Exceptions

Type	Condition
InvalidOperationException	Thrown if library is null.

OnStop()

Stops scanning for objects.

Declaration

protected override sealed void OnStop()

Overrides

UnityEngine.SubsystemsImplementation.SubsystemWithProvider<UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystem, UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystemDescriptor, UnityEngine.XR.ARSubsystems.XRObjectTrackingSubsystem.Provider>.OnStop()

Register<T>(string, Capabilities)

Registers an implementation of the XRObjectTrackingSubsystem.

Declaration

[Obsolete("XRObjectTrackingSubsystem.Register<T>(string id, XRObjectTrackingSubsystemDescriptor.Capabilities capabilities) has been deprecated in AR Foundation version 6.0. Instead use XRObjectTrackingSubsystemDescriptor.Register(XRObjectTrackingSubsystemDescriptor.Cinfo cinfo)", false)]
public static void Register<T>(string id, XRObjectTrackingSubsystemDescriptor.Capabilities capabilities) where T : XRObjectTrackingSubsystem.Provider

Parameters

Type	Name	Description
string	id	A unique string identifying the subsystem implementation.
XRObjectTrackingSubsystemDescriptor.Capabilities	capabilities	Describes the capabilities of the implementation.

Type Parameters

Name	Description
T	The concrete type of the subsystem being registered.

Exceptions

Type	Condition
ArgumentNullException	Thrown if id is null.

Register<TProvider, TSubsystemOverride>(string, Capabilities)

Registers a new implementation of the XRObjectTrackingSubsystem. Allows overriding a derived type of XRObjectTrackingSubsystem.

Declaration

[Obsolete("XRObjectTrackingSubsystem.Register<TProvider, TSubsystemOverride>(string id, XRObjectTrackingSubsystemDescriptor.Capabilities capabilities) has been deprecated in AR Foundation version 6.0. Instead use XRObjectTrackingSubsystemDescriptor.Register(XRObjectTrackingSubsystemDescriptor.Cinfo cinfo)", false)]
public static void Register<TProvider, TSubsystemOverride>(string id, XRObjectTrackingSubsystemDescriptor.Capabilities capabilities) where TProvider : XRObjectTrackingSubsystem.Provider where TSubsystemOverride : XRObjectTrackingSubsystem

Parameters

Type	Name	Description
string	id	A unique string identifying the subsystem implementation.
XRObjectTrackingSubsystemDescriptor.Capabilities	capabilities	Describes the capabilities of the implementation.

Type Parameters

Name	Description
TProvider	The concrete type of the provider being registered.
TSubsystemOverride	The concrete type of the subsystem being registered.

Exceptions

Type	Condition
ArgumentNullException	Thrown if id is null.

Implements

ISubsystem