private void RotateHandToNewPalmNormal(HandSkeleton hand, bool isLeft, Vector3 newPalmNormal)
{
Vector3 rotationPlane = Vector3.Cross(GetHandForward(hand.handBoneReferences), CalculatePalmNormal(hand.handBoneReferences, isLeft));
Vector3 newHandForward = Vector3.Cross(CalculatePalmNormal(hand.handBoneReferences, isLeft), rotationPlane);
bool inverseRotation = Vector3.Dot(newHandForward, Vector3.ProjectOnPlane(newPalmNormal, rotationPlane)) > 0f;
float angleToRotate = Vector3.Angle(CalculatePalmNormal(hand.handBoneReferences, isLeft), Vector3.ProjectOnPlane(newPalmNormal, rotationPlane));
//angleToRotate += fingerAngleOffset / 2f;
angleToRotate *= inverseRotation ? -1f : 1f;
angleToRotate += fingerAngleOffset;
hand.transform.GetChild(0).rotation *= Quaternion.AngleAxis(angleToRotate, hand.transform.GetChild(0).InverseTransformDirection(rotationPlane));
}
public override void OnInspectorGUI()
{
base.OnInspectorGUI();
HandSkeleton script = target as HandSkeleton;
if (GUILayout.Button("Populate Bones"))
{
script.PopulateBoneReferences();
}
if (GUILayout.Button("Clear Bone References"))
{
script.ClearBoneReferences();
}
}
void OnSceneGUI()
{
// TODO: add undo/redo functionality
HandSkeleton skeleton = target as HandSkeleton;
if (skeleton == null || !skeleton.handBoneReferences.IsValid)
{
return;
}
HandBoneReferences bones = skeleton.handBoneReferences;
if (bones.IsValid)
{
DrawHand(bones);
}
}
private void AlignHands(HandSkeleton leftHand, HandSkeleton rightHand)
{
Vector3 rightHandNormal = CalculatePalmNormal(rightHand.handBoneReferences, false);
Vector3 leftHandNormal = CalculatePalmNormal(leftHand.handBoneReferences, true);
Vector3 averageNormal = (rightHandNormal * -1f + leftHandNormal) / 2f;
if (debug)
{
Vector3 palmPosition = (leftHand.handBoneReferences.wrist.bone.position + leftHand.handBoneReferences.index.proximal.bone.position + leftHand.handBoneReferences.pinky.proximal.bone.position) / 3f;
Debug.DrawRay(palmPosition, averageNormal, Color.magenta, 1f);
palmPosition = (rightHand.handBoneReferences.wrist.bone.position + rightHand.handBoneReferences.index.proximal.bone.position + rightHand.handBoneReferences.pinky.proximal.bone.position) / 3f;
Debug.DrawRay(palmPosition, averageNormal * -1f, Color.magenta, 1f);
}
RotateHandToNewPalmNormal(leftHand, true, averageNormal);
RotateHandToNewPalmNormal(rightHand, false, averageNormal * -1f);
}