void Update()
{
if (!EditorApplication.isPlaying && SupportsEditorPersistence())
{
Transform editorPoseSpace;
LeapServiceProvider leapServiceProvider = FindObjectOfType <LeapServiceProvider>();
LeapTransform poseTransform = LeapTransform.Identity;
if (leapServiceProvider != null)
{
editorPoseSpace = leapServiceProvider.transform;
poseTransform = TestHandFactory.GetTestPoseLeftHandTransform(leapServiceProvider.editTimePose);
}
else
{
editorPoseSpace = transform;
}
Hand hand = TestHandFactory.MakeTestHand(Handedness == Chirality.Left, poseTransform).TransformedCopy(UnityMatrixExtension.GetLeapMatrix(editorPoseSpace));
//Hand hand = TestHandFactory.MakeTestHand(0, 0, Handedness == Chirality.Left).TransformedCopy(UnityMatrixExtension.GetLeapMatrix(editorPoseSpace));
if (GetLeapHand() == null)
{
SetLeapHand(hand);
InitHand();
BeginHand();
UpdateHand();
}
else
{
SetLeapHand(hand);
UpdateHand();
}
}
}
/// <summary>
/// Estimate the rotation offset needed to get the rigged hand into the same orientation as the leap hand
/// </summary>
public static void EstimateWristRotationOffset(HandBinder handBinder)
{
//Try to using the meta first
Transform indexBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_INDEX].boundBones[(int)Bone.BoneType.TYPE_METACARPAL].boundTransform;
Transform middleBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_MIDDLE].boundBones[(int)Bone.BoneType.TYPE_METACARPAL].boundTransform;
Transform pinkyBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_PINKY].boundBones[(int)Bone.BoneType.TYPE_METACARPAL].boundTransform;
//If the meta does not exist, use the proximal bones
if (indexBone == null || middleBone == null || pinkyBone == null)
{
indexBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_INDEX].boundBones[(int)Bone.BoneType.TYPE_PROXIMAL].boundTransform;
middleBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_MIDDLE].boundBones[(int)Bone.BoneType.TYPE_PROXIMAL].boundTransform;
pinkyBone = handBinder.boundHand.fingers[(int)Finger.FingerType.TYPE_PINKY].boundBones[(int)Bone.BoneType.TYPE_PROXIMAL].boundTransform;
}
Transform wrist = handBinder.boundHand.wrist.boundTransform;
if (middleBone != null && indexBone != null && pinkyBone != null && wrist != null)
{
//Get the Direction from the middle finger to the wrist
Vector3 wristForward = middleBone.position - wrist.position;
//Get the Direction from the Proximal pinky finger to the Proximal Index finger
Vector3 wristRight = indexBone.position - pinkyBone.position;
//Swap the direction based on left and right hands
if (handBinder.Handedness == Chirality.Right)
{
wristRight = -wristRight;
}
//Get the direciton that goes outwards from the back of the hand
Vector3 wristUp = Vector3.Cross(wristForward, wristRight);
//Make the vectors orthoginal to eacother, this is the basis for the model hand
Vector3.OrthoNormalize(ref wristRight, ref wristUp, ref wristForward);
//Create a new leap hand based off the Desktop hand pose
Hand hand = TestHandFactory.MakeTestHand(handBinder.Handedness == Chirality.Left, unitType: TestHandFactory.UnitType.LeapUnits);
hand.Transform(TestHandFactory.GetTestPoseLeftHandTransform(TestHandFactory.TestHandPose.DesktopModeA));
Quaternion leapRotation = hand.Rotation.ToQuaternion();
//Get the rotation of the calculated hand Basis
Quaternion modelRotation = Quaternion.LookRotation(wristForward, wristUp);
//Now calculate the difference between the models rotation and the leaps rotation
Quaternion wristRotationDifference = Quaternion.Inverse(modelRotation) * leapRotation;
Vector3 wristRelativeDifference = (Quaternion.Inverse(wrist.rotation) * wristRotationDifference).eulerAngles;
//Round to the nearest 90 degrees
wristRelativeDifference.x = Mathf.Round(wristRelativeDifference.x / 90) * 90;
wristRelativeDifference.y = Mathf.Round(wristRelativeDifference.y / 90) * 90;
wristRelativeDifference.z = Mathf.Round(wristRelativeDifference.z / 90) * 90;
//Assign these values to the hand binder
handBinder.GlobalFingerRotationOffset = wristRelativeDifference;
handBinder.boundHand.wrist.offset.rotation = wristRelativeDifference;
}
}