# ExistentHandComponent

[ExistentDocumentation](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index) > ExistentHandComponent

## ExistentHandComponent

### Class Details

**Defined in:** Public/Components/ExistentHandComponent.h

**Hierarchy:** *Object > ActorComponent > ExistentHandComponent*

The existent hand component is responsible for collecting, processing and storing the hand tracking data. This component works hand in hand with the existent grab component to allow the user to detect grips and grabbing objects. The hand tracking data stored by the component is all in world space.

### Properties

|                                   |                                     |                                                                                                                                       |
| --------------------------------- | ----------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| UExistentHandBoneMappings\*       | BoneMappings                        |                                                                                                                                       |
| int32                             | ConsiderTrackingAfterNumberOfFrames | Only consider the hand as tracking after this number of good tracking frames                                                          |
| EExistentHandDrawBoneType         | DebugDrawBoneType                   | The type of shape to draw the bones.                                                                                                  |
| bool                              | FilterHandData                      | Should the hand component filter the hand tracking data before being cached?                                                          |
| EExistentHand                     | Hand                                | Is this the left or right hand?                                                                                                       |
| FExistentHandDataFilterParameters | HandDataFilterParameters            | The parameters passed down into the existent hand data filter component to filter the hand tracking data.                             |
| bool                              | HandTrackingEnabled                 | Is the hand tracking on?                                                                                                              |
| bool                              | OverrideBoneMappings                |                                                                                                                                       |
| UExistentTrackerMappings\*        | TrackerMappings                     |                                                                                                                                       |
| float                             | TrackingConfidenceThreshold         | This is the tracking confidence threshold below which we will consider the tracking status as not tracked                             |
| bool                              | UseTrackingConfidence               | Should we use the tracking confidence value generated by the existent tracking confidence component to calculate the tracking status? |
| FName                             | WristTrackerComponent               | The name of the wrist tracker component used by this hand.                                                                            |
| float                             | WristTrackingConfidenceThreshold    | This value indicates how high the wrist tracking confidence value must be to make use of the wrist rotation while using trackers      |

### Nodes

|                                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [Get Bone Component Transforms](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/getbonecomponenttransforms)      |
| [Get Bone World Transforms](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/getboneworldtransforms)              |
| [Get Existent Player](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/getexistentplayer)                         |
| [Get Grab Component](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/getgrabcomponent)                           |
| [Get Tracking Status](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/gettrackingstatus)                         |
| [Get Transform from Wrist Tracker](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/gettransformfromwristtracker) |
| [Get Wrist Bone World Transform](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/getwristboneworldtransform)     |
| [Is Wrist Tracker Data Valid](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/iswristtrackerdatavalid)           |
| [Set Bone Mappings](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/setbonemappings)                             |
| [Set Hand Tracking Enabled](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/sethandtrackingenabled)              |
| [Set Tracker Mappings](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/settrackermappings)                       |
| [Set Wrist Transform](https://docs.existent.com/documentation/v0.0.2/resources/existent-api/index/existenthandcomponent/setwristtransform)                         |