Transform Unity Coordinate System into LeapMotion Coordinate System / Understanding LeapTransform and LeapQuaternion

[Agustin919]

Hello there.

I'm trying to develop a gesture application for my project and i want to use the Leap Motion Coordinate system.

1) As far as i'm concerned, Leap Motion's system origin is placed in the center of the device, wherever it moves in the real world space. I tried to track the position of the right hand palm normal vector in Vector3 and Vector but they both give me the same value. I tried to move my XRHeadset around the room to track different values without moving the hand in reference to the Leap Motion device, but it looks like it was always giving me the Unity Coordinate System values.

Is there something i am missing? Is there any way to convert the transform.position of an object, e.g. a cube, into one referred to the Leap Motion Coordinate System?

2) My second question is about the classes LeapTransform and LeapQuaternion, but understanding this one maybe i can find an answer to the first one.
What are they for? I don't understand the usage since i am having in the previous question the same output from Vector3 and Vector variables.

Thanks in advance.

[AlexColgan]

Our Unity assets automatically convert Leap coordinates into world coordinates, so you'll need to get the data directly from the API in order to get what you're looking for.

[Agustin919]

What i wanted to develop is a function to get the local rotation and coordinates of a hand in relation to the camera:

hM2 is the RiggedHand that i want to track

Vector3 positionPalmVector3 = hM2.GetPalmPosition();
Vector3 positionPalmCamVToV3 = MyCoordinateConverter.PosToCamCoord(GameObject.Find("Main Camera").transform, positionPalmVector3);

//Which comes from:
public static Vector3 PosToCamCoord(Transform camTr, Vector3 objPos)
{
return VectorHand.ToLocal(objPos, camTr.position, camTr.rotation);
}

//The other part of my code is:
Vector positionPalmVector = new Controller().Frame().Hand(hM2.GetLeapHand().Id).PalmPosition;
Vector3 positionPalmCamVToV3 = MyCoordinateConverter.PosToCamCoord(GameObject.Find("Main Camera").transform, positionPalmVector3);

//Which comes from:
public static Vector3 PosToCamCoord(Transform camTr, Vector objPos)
{
Vector _objPos = new Vector(objPos);
objPos.z = -objPos.z;
_objPos = _objPos / 1000f;

        return VectorHand.ToLocal(objPos.ToVector3(), camTr.position, camTr.rotation);
    }

I'm not sure if this can be accurate since i dont really understand Quaternions well. May i have some aid with this?

[BroncoBilli]

I changed LeapXRServiceProvider.cs's method transformFrame() from protected, to public. If you get a Frame of data from Leap, and you want to convert it into UNITY coordinate's system, you need to call this method. Of course, you need to have a GameObject in your scene that has this script attached to it, but it could be pretty much any object. I have it attached to my camera. You do not need the LeapRig in your scene to do this.