Interface IXRInteractionGroup

An interface that represents an Interaction Group component that enforces that only one IXRGroupMember within the Group can interact at a time.

Namespace: UnityEngine.XR.Interaction.Toolkit
Syntax
public interface IXRInteractionGroup

Properties

activeInteractor

The Interactor in this Interaction Group or any of its member Groups that is currently performing interaction.

Declaration
IXRInteractor activeInteractor { get; }
Property Value
Type Description
IXRInteractor

Methods

AddGroupMember(IXRGroupMember)

Adds the given Group member to the end of the ordered list of members in the Group. Causes no change if the Group member is already added.

Declaration
void AddGroupMember(IXRGroupMember groupMember)
Parameters
Type Name Description
IXRGroupMember groupMember

The Group member to add.
Remarks

groupMember must implement either IXRInteractor or IXRInteractionGroup.

ClearGroupMembers()

Removes all Group members from the list of members.

Declaration
void ClearGroupMembers()

ContainsGroupMember(IXRGroupMember)

Checks whether the given Group member exists in the list of members.

Declaration
bool ContainsGroupMember(IXRGroupMember groupMember)
Parameters
Type Name Description
IXRGroupMember groupMember

The Group member to check for in the list.
Returns
Type Description
Boolean

Returns true if groupMember exists in the list. Otherwise, returns false.

GetGroupMembers(List<IXRGroupMember>)

Returns all members in the ordered list of Group members into List results.

Declaration
void GetGroupMembers(List<IXRGroupMember> results)
Parameters
Type Name Description
List<IXRGroupMember> results

List to receive Group members.
Remarks

This method populates the list with the Group members at the time the method is called. It is not a live view, meaning Group members added or removed afterward will not be reflected in the results of this method. Clears results before adding to it.

HasDependencyOnGroup(IXRInteractionGroup)

Checks whether the given Group is either the same as this Group or a dependency of any member Group.

Declaration
bool HasDependencyOnGroup(IXRInteractionGroup group)
Parameters
Type Name Description
IXRInteractionGroup group

The Group to check for as a dependency.
Returns
Type Description
Boolean

Returns true if group is either the same as this Group or a dependency of this Group. Otherwise, returns false.

MoveGroupMemberTo(IXRGroupMember, Int32)

Moves the given Group member to the specified index in the ordered list of members in the Group. If the member is not in the list, this can be used to insert the member at the specified index.

Declaration
void MoveGroupMemberTo(IXRGroupMember groupMember, int newIndex)
Parameters
Type Name Description
IXRGroupMember groupMember

The Group member to move or add.
Int32 newIndex

New index of the Group member.
Remarks

groupMember must implement either IXRInteractor or IXRInteractionGroup.

OnBeforeUnregistered()

The XRInteractionManager calls this method just before this Interaction Group is unregistered from it.

Declaration
void OnBeforeUnregistered()
Remarks

This is where the Group should re-register its members with the Interaction Manager so that they are registered as not belonging to a Group.

See Also

OnRegistered(InteractionGroupRegisteredEventArgs)

The XRInteractionManager calls this method when this Interaction Group is registered with it.

Declaration
void OnRegistered(InteractionGroupRegisteredEventArgs args)
Parameters
Type Name Description
InteractionGroupRegisteredEventArgs args

Event data containing the Interaction Manager that registered this Interaction Group.
Remarks

args is only valid during this method call, do not hold a reference to it.

See Also

OnUnregistered(InteractionGroupUnregisteredEventArgs)

The XRInteractionManager calls this method when this Interaction Group is unregistered from it.

Declaration
void OnUnregistered(InteractionGroupUnregisteredEventArgs args)
Parameters
Type Name Description
InteractionGroupUnregisteredEventArgs args

Event data containing the Interaction Manager that unregistered this Interaction Group.
Remarks

args is only valid during this method call, do not hold a reference to it.

See Also

PreprocessGroupMembers(XRInteractionUpdateOrder.UpdatePhase)

The XRInteractionManager or containing IXRInteractionGroup calls this method to update the Group and its members before interaction events occur.

Declaration
void PreprocessGroupMembers(XRInteractionUpdateOrder.UpdatePhase updatePhase)
Parameters
Type Name Description
XRInteractionUpdateOrder.UpdatePhase updatePhase

The update phase during which this method is called.
Remarks

Please see the XRInteractionManager and XRInteractionUpdateOrder.UpdatePhase documentation for more details on update order.

See Also

ProcessGroupMembers(XRInteractionUpdateOrder.UpdatePhase)

The XRInteractionManager or containing IXRInteractionGroup calls this method to update the Group and its members after interaction events occur.

Declaration
void ProcessGroupMembers(XRInteractionUpdateOrder.UpdatePhase updatePhase)
Parameters
Type Name Description
XRInteractionUpdateOrder.UpdatePhase updatePhase

The update phase during which this method is called.
Remarks

Please see the XRInteractionManager and XRInteractionUpdateOrder.UpdatePhase documentation for more details on update order.

See Also

RemoveGroupMember(IXRGroupMember)

Removes the given Group member from the list of members.

Declaration
bool RemoveGroupMember(IXRGroupMember groupMember)
Parameters
Type Name Description
IXRGroupMember groupMember

The Group member to remove.
Returns
Type Description
Boolean

Returns true if groupMember was removed from the list. Otherwise, returns false if groupMember was not found in the list.

UpdateGroupMemberInteractions()

The XRInteractionManager calls this method to update interactions for this Group's members. This is where interaction events occur for any IXRInteractor member.

Declaration
void UpdateGroupMemberInteractions()
Remarks

The implementation of this method should call UpdateGroupMemberInteractions(IXRInteractor, out IXRInteractor).

UpdateGroupMemberInteractions(IXRInteractor, out IXRInteractor)

Updates interactions for this Group's members, given an Interactor that has already been prioritized for interaction. This is where interaction events occur for any IXRInteractor member.

Declaration
void UpdateGroupMemberInteractions(IXRInteractor prePrioritizedInteractor, out IXRInteractor interactorThatPerformedInteraction)
Parameters
Type Name Description
IXRInteractor prePrioritizedInteractor

The Interactor that has already been prioritized for interaction. If not null, this prevents all other members in this Group from interacting.
IXRInteractor interactorThatPerformedInteraction

The Interactor in this Group or any of its member Groups that performed interaction as a result of this method call. This will be null if no Interactor performed interaction.
Remarks

The implementation of this method should call this method on each member that is an IXRInteractionGroup. After this method is called, activeInteractor should return the same reference as interactorThatPerformedInteraction.

Events

registered

Calls the methods in its invocation list when this Interaction Group is registered with an Interaction Manager.

Declaration
event Action<InteractionGroupRegisteredEventArgs> registered
Event Type
Type Description
Action<InteractionGroupRegisteredEventArgs>
Remarks

The InteractionGroupRegisteredEventArgs passed to each listener is only valid while the event is invoked, do not hold a reference to it.

See Also

unregistered

Calls the methods in its invocation list when this Interaction Group is unregistered from an Interaction Manager.

Declaration
event Action<InteractionGroupUnregisteredEventArgs> unregistered
Event Type
Type Description
Action<InteractionGroupUnregisteredEventArgs>
Remarks

The InteractionGroupUnregisteredEventArgs passed to each listener is only valid while the event is invoked, do not hold a reference to it.

See Also

See Also