Class GazeHandHelper

This class must be instantiated by a script that implements the IMixedRealitySourceStateHandler, IMixedRealityInputHandler and IMixedRealityInputHandler<T>.

It must receive EventData arguments from OnInputDown(), OnInputUp(), OnInputChanged() and OnSourceLost().

This class manages the states of input necessary to calculate a proper grab position The eventData received on inputdown has the point on the target that was hit by the gaze; the mixedrealitypose - eventdata received on input changed contains the handposition in eventdata.inputdata.position It also contains useful retrieval functions.

Inheritance

Object

GazeHandHelper

Inherited Members

Object.ToString()

Object.Equals(Object)

Object.Equals(Object, Object)

Object.ReferenceEquals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Namespace: Microsoft.MixedReality.Toolkit.UI

Assembly: cs.temp.dll.dll

Syntax

[Obsolete("This component is no longer supported", true)]
public class GazeHandHelper

Methods

AddSource(InputEventData)

This function must be called from the OnInputDown handler in a script implementing the IMixedRealityInputHandler<T>.

Declaration

public void AddSource(InputEventData eventData)

Parameters

Type	Name	Description
InputEventData	eventData	The InputEventData argument 'eventData' is passed through to GazeHandHelper

GetActiveHandCount()

This function returns the number of active hands.

Declaration

public int GetActiveHandCount()

Returns

Type	Description
Int32

GetAllHandPositions()

This function gets an array of all active hand positions

Declaration

public IEnumerable<Vector3> GetAllHandPositions()

Returns

Type	Description
IEnumerable<Vector3>	enumerable of Vector3

GetFirstHand()

This function retrieves the position of the first active hand.

Declaration

public Vector3 GetFirstHand()

Returns

Type	Description
Vector3	Vector3 representing position

GetHandPositionsDictionary()

This function retrieves a reference to the Dictionary that maps hand positions to sourceIds. This return value is NOT filtered for whether the hands are active. User should check first using GetActiveHandCount().

Declaration

public Dictionary<uint, Vector3> GetHandPositionsDictionary()

Returns

Type	Description
Dictionary<UInt32, Vector3>	Dictionary with uint Keys mapping to Vector3 positions

GetHandsCentroid()

This function gets the average of the positions of all active hands.

Declaration

public Vector3 GetHandsCentroid()

Returns

Type	Description
Vector3	Vector3 representing the average position

RemoveSource(InputEventData)

This function must be called from the OnInputUp handler in a script implementing the IMixedRealityInputHandler<T>.

Declaration

public void RemoveSource(InputEventData eventData)

Parameters

Type	Name	Description
InputEventData	eventData	he InputEventData argument 'eventData' is passed through to GazeHandHelper

RemoveSource(SourceStateEventData)

This function must be called from the OnSourceLost handler in a script implementing the IMixedRealitySourceStateHandler interface.

Declaration

public void RemoveSource(SourceStateEventData eventData)

Parameters

Type	Name	Description
SourceStateEventData	eventData

TryGetHandPosition(Handedness, out Vector3)

TryGet style function to return HandPosition of a certain handedness if available.

Declaration

public bool TryGetHandPosition(Handedness handedness, out Vector3 position)

Parameters

Type	Name	Description
Handedness	handedness	asks for left or right hand or either
Vector3	position	out value that gets filled with a Vector3 representing position

Returns

Type	Description
Boolean	true or false- whether the hand existed

TryGetHandPosition(UInt32, out Vector3)

TryGet style function to return HandPosition of a certain sourceId if available.

Declaration

public bool TryGetHandPosition(uint id, out Vector3 handPosition)

Parameters

Type	Name	Description
UInt32	id	asks for the hand position associated with a certain IMixedRealityInputSource id
Vector3	handPosition	out value that gets filled with a Vector3 representing position

Returns

Type	Description
Boolean	true or false- whether the hand existed

TryGetHandsCentroid(out Vector3)

TryGet style function to get the average of all active hand positions.

Declaration

public bool TryGetHandsCentroid(out Vector3 handsCentroid)

Parameters

Type	Name	Description
Vector3	handsCentroid	out value filled with Vector3 representing average of hand positions

Returns

Type	Description
Boolean	true if there were any active hands; false if there were no active hands

UpdateSource(InputEventData<MixedRealityPose>)

This function must be called from the OnInputChanged handler in a script implementing the IMixedRealityInputHandler<T>.

Declaration

public void UpdateSource(InputEventData<MixedRealityPose> eventData)

Parameters

Type	Name	Description
InputEventData<MixedRealityPose>	eventData