Feature/simplify specific bone and finger access

Packages/Tracking Preview/AggregationProviders/Runtime/Scripts/AggregationProviderConfidenceInterpolation.cs

@@ -570,16 +570,16 @@ float[] Confidence_RelativeJointRot(float[] confidences, Transform deviceOrigin,
                 confidences = new float[VectorHand.NUM_JOINT_POSITIONS];
             }
 
-            foreach (var finger in hand.Fingers)
+            foreach (var finger in hand.fingers)
             {
                 for (int bone_idx = 0; bone_idx < 4; bone_idx++)
                 {
                     int key = (int)finger.Type * 4 + bone_idx;
 
-                    Vector3 jointPos = finger.Bone((Bone.BoneType)bone_idx).NextJoint;
+                    Vector3 jointPos = finger.GetBone((Bone.BoneType)bone_idx).NextJoint;
                     Vector3 jointNormalVector = new Vector3();
-                    if ((int)finger.Type == 0) jointNormalVector = finger.Bone((Bone.BoneType)bone_idx).Rotation * Vector3.right;
-                    else jointNormalVector = finger.Bone((Bone.BoneType)bone_idx).Rotation * Vector3.up * -1;
+                    if ((int)finger.Type == 0) jointNormalVector = finger.GetBone((Bone.BoneType)bone_idx).Rotation * Vector3.right;
+                    else jointNormalVector = finger.GetBone((Bone.BoneType)bone_idx).Rotation * Vector3.up * -1;
 
                     float angle = Vector3.Angle(jointPos - deviceOrigin.position, jointNormalVector);
 
@@ -604,13 +604,13 @@ float[] Confidence_relativeJointRotToPalmRot(float[] confidences, Transform devi
                 confidences = new float[VectorHand.NUM_JOINT_POSITIONS];
             }
 
-            foreach (var finger in hand.Fingers)
+            foreach (var finger in hand.fingers)
             {
                 for (int bone_idx = 0; bone_idx < 4; bone_idx++)
                 {
                     int key = (int)finger.Type * 4 + bone_idx;
 
-                    Vector3 jointNormalVector = finger.Bone((Bone.BoneType)bone_idx).Rotation * Vector3.up * -1;
+                    Vector3 jointNormalVector = finger.GetBone((Bone.BoneType)bone_idx).Rotation * Vector3.up * -1;
 
                     float angle = Vector3.Angle(hand.PalmNormal, jointNormalVector);
 

Packages/Tracking Preview/AggregationProviders/Runtime/Scripts/JointOcclusion.cs

@@ -145,7 +145,7 @@ public float[] Confidence_JointOcclusion(float[] confidences, Transform deviceOr
         // and how many pixels of a joint would be seen if the joint was not occluded at all (in optimalPixelsCount)
         int[] pixelsSeenCount = new int[confidences.Length];
         int[] optimalPixelsCount = new int[confidences.Length];
-        foreach (var finger in hand.Fingers)
+        foreach (var finger in hand.fingers)
         {
             for (int j = 0; j < 4; j++)
             {
@@ -158,7 +158,7 @@ public float[] Confidence_JointOcclusion(float[] confidences, Transform deviceOr
 
                 // get the joint position from the given hand and use it to calculate the screen position of the joint's center and 
                 // a point on the outside border of the joint (both in pixel coordinates)
-                Vector3 jointPos = finger.Bone((Leap.Bone.BoneType)j).NextJoint;
+                Vector3 jointPos = finger.GetBone((Leap.Bone.BoneType)j).NextJoint;
                 Vector3 screenPosCenter = cam.WorldToScreenPoint(jointPos);
                 Vector3 screenPosSphereOutside = cam.WorldToScreenPoint(jointPos + cam.transform.right * jointRadius);
 

Packages/Tracking Preview/Examples~/Aggregation Provider Examples/Scripts/Utility/MultideviceAlignment.cs

@@ -53,8 +53,8 @@ void Update()
                         {
                             for (int k = 0; k < 4; k++)
                             {
-                                sourceHandPoints.Add(sourceHand.Fingers[j].bones[k].Center);
-                                targetHandPoints.Add(targetHand.Fingers[j].bones[k].Center);
+                                sourceHandPoints.Add(sourceHand.fingers[j].bones[k].Center);
+                                targetHandPoints.Add(targetHand.fingers[j].bones[k].Center);
                             }
                         }
 

Packages/Tracking Preview/Locomotion/Runtime/Scripts/Teleportation/Teleport Action/Jump Gem Teleport/JumpGem.cs

@@ -448,15 +448,15 @@ private void PositionGem()
                     if (_pinchStartTimeCurrent > 0)
                     {
                         _pinchItem.position = Vector3.Lerp(_pinchStartPosition,
-                            Vector3.Lerp(_pinchedHand.Fingers[0].TipPosition, _pinchedHand.Fingers[1].TipPosition, 0.5f),
+                            Vector3.Lerp(_pinchedHand.fingers[0].TipPosition, _pinchedHand.fingers[1].TipPosition, 0.5f),
                             Mathf.InverseLerp(_pinchStartTime, 0, _pinchStartTimeCurrent));
                         _pinchItem.rotation = Quaternion.Lerp(_pinchStartRotation,
                             _rayRotation,
                             Mathf.InverseLerp(_pinchStartTime, 0, _pinchStartTimeCurrent));
                     }
                     else
                     {
-                        _pinchItem.position = Vector3.Lerp(_pinchedHand.Fingers[0].TipPosition, _pinchedHand.Fingers[1].TipPosition, 0.5f);
+                        _pinchItem.position = Vector3.Lerp(_pinchedHand.fingers[0].TipPosition, _pinchedHand.fingers[1].TipPosition, 0.5f);
                         _pinchItem.rotation = _rayRotation;
                     }
                 }

Packages/Tracking Preview/UI Input/Runtime/Scripts/PointerElement.cs

@@ -163,8 +163,8 @@ private void Start()
         /// </summary>
         private float DistanceOfTipToPointer(Hand hand)
         {
-            var tipPosition = hand.Fingers[(int)Finger.FingerType.TYPE_INDEX]
-                .Bone(Bone.BoneType.TYPE_DISTAL).NextJoint;
+            var tipPosition = hand.fingers[(int)Finger.FingerType.INDEX]
+                .GetBone(Bone.BoneType.DISTAL).NextJoint;
 
             var pointerTransform = transform;
             return -pointerTransform.transform.InverseTransformPoint(tipPosition).z * pointerTransform.transform.lossyScale.z - module.TactilePadding;
@@ -760,27 +760,27 @@ private bool GetLookPointerEventData(Hand hand, Vector3 origin, bool forceTipRay
                 tipRaycast = true;
 
                 var farthest = 0f;
-                pointerPosition = hand.GetIndex().TipPosition;
+                pointerPosition = hand.Index.TipPosition;
                 for (var i = 1; i < 3; i++)
                 {
                     var fingerDistance = Vector3.Distance(mainCamera.transform.position,
-                        hand.Fingers[i].TipPosition);
+                        hand.fingers[i].TipPosition);
                     var fingerExtension =
                         Mathf.Clamp01(Vector3.Dot(
-                            hand.Fingers[i].Direction,
+                            hand.fingers[i].Direction,
                             leapDataProvider.CurrentFrame.Hands[0].Direction)) / 1.5f;
 
                     if (fingerDistance > farthest && fingerExtension > 0.5f)
                     {
                         farthest = fingerDistance;
-                        pointerPosition = hand.Fingers[i].TipPosition;
+                        pointerPosition = hand.fingers[i].TipPosition;
                     }
                 }
             }
             else
             {
                 //Raycast through the knuckle of the finger
-                pointerPosition = mainCamera.transform.position - origin + hand.Fingers[(int)Finger.FingerType.TYPE_INDEX].Bone(Bone.BoneType.TYPE_METACARPAL).Center;
+                pointerPosition = mainCamera.transform.position - origin + hand.fingers[(int)Finger.FingerType.INDEX].GetBone(Bone.BoneType.METACARPAL).Center;
             }
 
             //Set the Raycast Direction and Delta

Packages/Tracking Preview/XRControllerSupport/Runtime/Scripts/ControllerPostProcess/ControllerHand.cs

@@ -441,15 +441,15 @@ private Hand GenerateControllerHand()
             SetFingerSizes(ref h, 0.013f);
 
             // Thumb
-            RotateFinger(h.Fingers[0], this.Thumb);
+            RotateFinger(h.fingers[0], this.Thumb);
 
             // index Finger
-            RotateFinger(h.Fingers[1], this.IndexFinger);
+            RotateFinger(h.fingers[1], this.IndexFinger);
 
             // Grip Fingers
-            RotateFinger(h.Fingers[2], this.MiddleFinger);
-            RotateFinger(h.Fingers[3], this.RingFinger);
-            RotateFinger(h.Fingers[4], this.PinkyFinger);
+            RotateFinger(h.fingers[2], this.MiddleFinger);
+            RotateFinger(h.fingers[3], this.RingFinger);
+            RotateFinger(h.fingers[4], this.PinkyFinger);
 
             h.Transform(_currentPosition, _currentRotation);
 
@@ -469,11 +469,11 @@ private Hand GenerateControllerHand()
 
         private void SetFingerSizes(ref Hand hand, float boneWidth)
         {
-            for (int i = 0; i < hand.Fingers.Count; i++)
+            for (int i = 0; i < hand.fingers.Length; i++)
             {
-                for (int j = 0; j < hand.Fingers[i].bones.Length; j++)
+                for (int j = 0; j < hand.fingers[i].bones.Length; j++)
                 {
-                    hand.Fingers[i].bones[j].Width = boneWidth;
+                    hand.fingers[i].bones[j].Width = boneWidth;
                 }
             }
         }

Packages/Tracking/CHANGELOG.md

@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Improved XRHands support for Meta Aim Input Actions
 - XRLeapProviderManager renamed LEAP_DIRECT to ULTRALEAP
+- Accessors for Hand.Finger, Hand.Bone and Finger.Bone
+- Renamed BoneType enum entries to remove redundancies
 
 ### Fixed
 - Issue with the method signature for LeapPixelToRectilinearEx

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/Arm.cs

@@ -42,7 +42,7 @@ public class Arm : Bone, IEquatable<Arm>
                  direction,
                  length,
                  width,
-                 BoneType.TYPE_METACARPAL, //ignored for arms
+                 BoneType.METACARPAL, //ignored for arms
                  rotation)
         { }
 

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/Bone.cs

@@ -34,7 +34,7 @@ public class Bone : IEquatable<Bone>
         /// </summary>
         public Bone()
         {
-            Type = BoneType.TYPE_INVALID;
+            Type = BoneType.UNKNOWN;
         }
 
         /// <summary>
@@ -185,11 +185,11 @@ public LeapTransform Basis
         /// </summary>
         public enum BoneType
         {
-            TYPE_INVALID = -1,
-            TYPE_METACARPAL = 0,
-            TYPE_PROXIMAL = 1,
-            TYPE_INTERMEDIATE = 2,
-            TYPE_DISTAL = 3
+            UNKNOWN = -1,
+            METACARPAL = 0,
+            PROXIMAL = 1,
+            INTERMEDIATE = 2,
+            DISTAL = 3
         }
     }
 }

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/CopyFromLeapCExtensions.cs

@@ -75,7 +75,7 @@ private static Hand CopyFrom(this Hand hand, ref LEAP_HAND leapHand, long frameI
             hand.FrameId = frameId;
             hand.Id = (int)leapHand.id;
 
-            hand.Arm.CopyFrom(leapHand.arm, Bone.BoneType.TYPE_INVALID);
+            hand.Arm.CopyFrom(leapHand.arm, Bone.BoneType.UNKNOWN);
 
             hand.Confidence = leapHand.confidence;
             hand.GrabStrength = leapHand.grab_strength;
@@ -92,11 +92,11 @@ private static Hand CopyFrom(this Hand hand, ref LEAP_HAND leapHand, long frameI
             hand.Direction = leapHand.palm.direction.ToVector3();
             hand.WristPosition = hand.Arm.NextJoint;
 
-            hand.Fingers[0].CopyFrom(leapHand.thumb, Leap.Finger.FingerType.TYPE_THUMB, hand.Id, hand.TimeVisible);
-            hand.Fingers[1].CopyFrom(leapHand.index, Leap.Finger.FingerType.TYPE_INDEX, hand.Id, hand.TimeVisible);
-            hand.Fingers[2].CopyFrom(leapHand.middle, Leap.Finger.FingerType.TYPE_MIDDLE, hand.Id, hand.TimeVisible);
-            hand.Fingers[3].CopyFrom(leapHand.ring, Leap.Finger.FingerType.TYPE_RING, hand.Id, hand.TimeVisible);
-            hand.Fingers[4].CopyFrom(leapHand.pinky, Leap.Finger.FingerType.TYPE_PINKY, hand.Id, hand.TimeVisible);
+            hand.fingers[0].CopyFrom(leapHand.thumb, Leap.Finger.FingerType.THUMB, hand.Id, hand.TimeVisible);
+            hand.fingers[1].CopyFrom(leapHand.index, Leap.Finger.FingerType.INDEX, hand.Id, hand.TimeVisible);
+            hand.fingers[2].CopyFrom(leapHand.middle, Leap.Finger.FingerType.MIDDLE, hand.Id, hand.TimeVisible);
+            hand.fingers[3].CopyFrom(leapHand.ring, Leap.Finger.FingerType.RING, hand.Id, hand.TimeVisible);
+            hand.fingers[4].CopyFrom(leapHand.pinky, Leap.Finger.FingerType.PINKY, hand.Id, hand.TimeVisible);
 
             hand.TransformToUnityUnits();
 
@@ -123,10 +123,10 @@ private static Finger CopyFrom(this Finger finger, LEAP_DIGIT leapBone, Finger.F
             Bone intermediate = finger.bones[2];
             Bone distal = finger.bones[3];
 
-            metacarpal.CopyFrom(leapBone.metacarpal, Leap.Bone.BoneType.TYPE_METACARPAL);
-            proximal.CopyFrom(leapBone.proximal, Leap.Bone.BoneType.TYPE_PROXIMAL);
-            intermediate.CopyFrom(leapBone.intermediate, Leap.Bone.BoneType.TYPE_INTERMEDIATE);
-            distal.CopyFrom(leapBone.distal, Leap.Bone.BoneType.TYPE_DISTAL);
+            metacarpal.CopyFrom(leapBone.metacarpal, Leap.Bone.BoneType.METACARPAL);
+            proximal.CopyFrom(leapBone.proximal, Leap.Bone.BoneType.PROXIMAL);
+            intermediate.CopyFrom(leapBone.intermediate, Leap.Bone.BoneType.INTERMEDIATE);
+            distal.CopyFrom(leapBone.distal, Leap.Bone.BoneType.DISTAL);
 
             finger.TipPosition = distal.NextJoint;
             finger.Direction = intermediate.Direction;

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/CopyFromOtherExtensions.cs

@@ -62,7 +62,7 @@ public static Hand CopyFrom(this Hand hand, Hand source)
 
             for (int i = 5; i-- != 0;)
             {
-                hand.Fingers[i].CopyFrom(source.Fingers[i]);
+                hand.fingers[i].CopyFrom(source.fingers[i]);
             }
 
             return hand;

Packages/Tracking/Core/Runtime/Plugins/LeapCSharp/Finger.cs

@@ -29,6 +29,11 @@ public class Finger
         /// </summary>
         public Bone[] bones = new Bone[4];
 
+        public Bone Metacarpal => bones[0];
+        public Bone Proximal => bones[1];
+        public Bone Intermediate => bones[2];
+        public Bone Distal => bones[3];
+
         /// <summary>
         /// Constructs a finger.
         /// 
@@ -82,15 +87,6 @@ public Finger()
             TimeVisible = timeVisible;
         }
 
-        /// <summary>
-        /// The bone at a given bone index on this finger.
-        /// @since 2.0
-        /// </summary>
-        public Bone Bone(Bone.BoneType boneIx)
-        {
-            return bones[(int)boneIx];
-        }
-
         /// <summary>
         /// A string containing a brief, human readable description of the Finger object.
         /// @since 1.0
@@ -178,12 +174,12 @@ public override string ToString()
         /// </summary>
         public enum FingerType
         {
-            TYPE_THUMB = 0,
-            TYPE_INDEX = 1,
-            TYPE_MIDDLE = 2,
-            TYPE_RING = 3,
-            TYPE_PINKY = 4,
-            TYPE_UNKNOWN = -1
+            THUMB = 0,
+            INDEX = 1,
+            MIDDLE = 2,
+            RING = 3,
+            PINKY = 4,
+            UNKNOWN = -1
         }
     }
 }