[RequireComponent(typeof(ARSessionOrigin))]
[DisallowMultipleComponent]
public abstract class ARTrackableManager<TSubsystem, TSubsystemDescriptor, TProvider, TSessionRelativeData, TTrackable> : SubsystemLifecycleManager<TSubsystem, TSubsystemDescriptor, TProvider> where TSubsystem : TrackingSubsystem<TSessionRelativeData, TSubsystem, TSubsystemDescriptor, TProvider>, new() where TSubsystemDescriptor : SubsystemDescriptorWithProvider<TSubsystem, TProvider> where TProvider : SubsystemProvider<TSubsystem> where TSessionRelativeData : struct, ITrackable where TTrackable : ARTrackable<TSessionRelativeData, TTrackable>

Type Parameters

Name	Description
TSubsystem	The `Subsystem` which provides this manager data.
TSubsystemDescriptor	The `SubsystemDescriptor` required to create the Subsystem.
TProvider	The provider associated with the `TSubsystem`.
TSessionRelativeData	A concrete struct used to hold data provided by the Subsystem.
TTrackable	The type of component that this component will manage (that is, create, update, and destroy).

Remarks

When the manager is informed that a trackable has been added, a new GameObject is created with an ARTrackable component on it. If ARTrackableManager<TSubsystem, TSubsystemDescriptor, TProvider, TSessionRelativeData, TTrackable> is not null, then that Prefab will be instantiated.

Fields

Name	Description
m_PendingAdds	A dictionary of trackables added via CreateTrackableImmediate(TSessionRelativeData) but not yet reported as added.
m_Trackables	A dictionary of all trackables, keyed by `TrackableId`.

Properties

Name	Description
gameObjectName	The name prefix that should be used when instantiating new `GameObject`s.
sessionOrigin	The `ARSessionOrigin` which will be used to instantiate detected trackables.
trackables	A collection of all trackables managed by this component.

Methods

Name	Description
Awake()	Invoked by Unity once when this component wakes up.
CanBeAddedToSubsystem(TTrackable)	Determines whether an existing ARTrackable<TSessionRelativeData, TTrackable> can be added to the underlying subsystem.
CreateTrackableFromExisting(TTrackable, TSessionRelativeData)	Creates the native counterpart for an existing ARTrackable<TSessionRelativeData, TTrackable> added with a call to AddComponent, for example.
CreateTrackableImmediate(TSessionRelativeData)	Creates a `TTrackable` immediately and leaves it in a "pending" state.
DestroyPendingTrackable(TrackableId)	If in a "pending" state and destroyOnRemoval is `true`, this method destroys the trackable's `GameObject`. Otherwise, this method has no effect.
GetPrefab()	The Prefab that should be instantiated when adding a trackable. Can be `null`.
OnAfterSetSessionRelativeData(TTrackable, TSessionRelativeData)	Invoked just after session-relative data has been set on a trackable.
OnCreateTrackable(TTrackable)	Invoked after creating the trackable. The trackable's `sessionRelativeData` property will already be set.
OnDisable()	Stops the `TSubsystem`.
OnEnable()	Creates the `TSubsystem`.
OnTrackablesChanged(List<TTrackable>, List<TTrackable>, List<TTrackable>)	Invoked when trackables have change (that is, they were added, updated, or removed). Use this to perform additional logic, or to invoke public events related to your trackables.
SetTrackablesActive(bool)	Iterates over every instantiated ARTrackable<TSessionRelativeData, TTrackable> and activates or deactivates its `GameObject` based on the value of `active`. This calls GameObject.SetActive on each trackable's `GameObject`.
Update()	Update is called once per frame. This component's internal state is first updated, and then an event notifying whether any trackables have been added, removed, or updated is invoked by the derived manager.