Returns the current control Vector3 for the finger at the given 1-based index (1 = Thumb … 5 = Pinky). The components are:

• X — extension in [0, 1]: 0 is fully curled, 1 is fully extended.
• Y — lateral (side) rotation in [-1, 1].
• Z — axial (twist) rotation in [-1, 1].

Returns the world-space position of the fingertip for the finger at the given 1-based index (1 = Thumb … 5 = Pinky). Not yet implemented; currently returns Vector3.zero.

The Motor6D, AnimationConstraint, or Bone instance mapped to the proximal (first) phalanx of the index finger.

CoordinateFrame applied to Index1 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the medial (second) phalanx of the index finger.

CoordinateFrame applied to Index2 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the distal (third) phalanx of the index finger.

CoordinateFrame applied to Index3 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

A Vector3 describing the motion range of the index finger, used by the finger solver.

Size of the index finger, used by the finger solver to preserve contacts.

The Instance mapped to the proximal (first) phalanx of the middle finger.

CoordinateFrame applied to Middle1 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the medial (second) phalanx of the middle finger.

CoordinateFrame applied to Middle2 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the distal (third) phalanx of the middle finger.

CoordinateFrame applied to Middle3 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

A Vector3 describing the motion range of the middle finger, used by the finger solver and scalable-property system.

Scale factor for the middle finger, used when the rig is scaled through the scalable-property system.

The Instance mapped to the proximal (first) phalanx of the pinky finger.

CoordinateFrame applied to Pinky1 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the medial (second) phalanx of the pinky finger.

CoordinateFrame applied to Pinky2 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the distal (third) phalanx of the pinky finger.

CoordinateFrame applied to Pinky3 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

A Vector3 describing the motion range of the pinky finger, used by the finger solver and scalable-property system.

Scale factor for the pinky finger, used when the rig is scaled through the scalable-property system.

The Instance mapped to the proximal (first) phalanx of the ring finger.

CoordinateFrame applied to Ring1 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the medial (second) phalanx of the ring finger.

CoordinateFrame applied to Ring2 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the distal (third) phalanx of the ring finger.

CoordinateFrame applied to Ring3 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

A Vector3 describing the motion range of the ring finger, used by the finger solver and scalable-property system.

Scale factor for the ring finger, used when the rig is scaled through the scalable-property system.

Drives the three-joint chain of the finger at the given 1-based index (1 = Thumb … 5 = Pinky) using forward kinematics. The control components are clamped before application:

• X — extension, clamped to [0, 1].
• Y — lateral rotation, clamped to [-1, 1] (maps to ±50°).
• Z — axial rotation, clamped to [-1, 1] (maps to ±50°).

Joint angles for the three phalanges are computed via Ptolemy's theorem applied to the chain lengths.

Moves the fingertip of the finger at the given 1-based index (1 = Thumb … 5 = Pinky) toward the world-space target point using inverse kinematics. The solver computes the required extension, lateral, and axial control values and then calls SetFingerControl internally.

Which hand this description belongs to: None, Left, or Right. Used when mapping HandRigLabel joints to the corresponding HumanoidRigLabel entries on the parent HumanoidRigDescription.

The Instance mapped to the proximal (first) phalanx of the thumb.

CoordinateFrame applied to Thumb1 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the medial (second) phalanx of the thumb.

CoordinateFrame applied to Thumb2 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

The Instance mapped to the distal (third) phalanx of the thumb.

CoordinateFrame applied to Thumb3 to normalize the joint into its canonical T-pose orientation before retargeting or solving.

A Vector3 describing the motion range of the thumb, used by the finger solver and scalable-property system.

Scale factor for the thumb, used when the rig is scaled through the scalable-property system.