Meta Hand Tracking Aim¶

Chose the desired configuration option below to see the key-value pairs and their options:

Configuration File

Keys	Values	Details	Defaults
`right_hand_dominant`	`BOOL`	where `BOOL` is a boolean indicating whether the right hand is your dominant hand. Options are `true` and `false`	`true`

Environment Variables

Keys	Values	Details	Defaults
`ULTRALEAP_OPENXR_RIGHT_HAND_DOMINANT`	`BOOL`	where `BOOL` is a boolean indicating whether the right hand is your dominant hand. Options are `true` and `false`	`true`

What does it do?¶

This feature is implicitly provided by our OpenXR layer and an application can make use of it by leveraging the XR_FB_hand_tracking_aim extension. It provides typical far field gesture state for query.

This features data is chained from the XR_EXT_hand_tracking’s’ xrLocateHandJointsEXT and supplies the following information:

Status Flags
Aim Pose
Index finger Pinch Strength
Middle finger Pinch Strength
Ring finger Pinch Strength
Little finger Pinch Strength

The Status Flags are flag bits that determine whether or not the data described above is in a valid state to read. The dominant hand described in the Status Flags is set via the above configuration variable and defaults to the right hand being the dominant hand.

Note

The bits for the flags XR_HAND_TRACKING_AIM_MENU_PRESSED_BIT_FB and XR_HAND_TRACKING_AIM_SYSTEM_GESTURE_BIT_FB will always be unset as to not conflict with typical system gestures.