Best way to track a (Vive) Tracker with the (native) XR classes?

I want to track the position of a (Vive) Tracker with the native Unity XR classes.
The InputTracking.GetLocalPosition method, doesn't work in this case, because there can be multiple tracker: https://docs.unity3d.com/ScriptReference/XR.InputTracking.GetLocalPosition.html

It outputs a warning/error, https://docs.unity3d.com/ScriptReference/XR.InputTracking.GetNodeStates.html should be used instead.

This method works, it returns a list of all states and there is also a entry for the "HardwareTracker" which gives the correct values for the connected Vive Tracker.

But my question is: Is there a better way to handle this? Because I have to update the position every Update and it feels kinda weird to iterate the list every frame to get the "HardwareTracker" state from the updated list.

I tried to store the reference of the "HardwareTracker" state, but they are structs so it's not possible.

The state also has some (hardware) id property but I couldn't find any way to use this id to get the tracking information. The only methods I found are the two linked above.

I don't want to use the SteamVR plugin, I know that it would be easier to handle tracker that way, I'm only asking about the native Unity XR.

 

Did you ever get this working. I'm having the same problem.

 

I didn't find a better solution, so I used the "dirty" method to get all nodes every update and iterate the returned list to update all "HardwareTracker".

Im not sure if the newer Unity versions have new methods to handle this in a "cleaner" way, because I don't work on the project anymore.

I think the "easiest" way to deal with the (Vive-)Tracker is to use the SteamVR plugin.

 

Looks good. I also like the new TryGetFeatureValue methods! I didn't try them yet, but it looks like we can call these methods to get the controller inputs instead of setting up input mappings and string names. Also haptics, awesome

Im not sure if you are allowed to talk about this yet, but will these APIs also work for the Oculus Quest, which will be releases "soon"?

 

I know this is a "old" thread, but I wanted to ask here instead of making a new one. Today is the official release of the Oculus Quest, I think all NDAs etc should be gone. So I wanted to ask which version of Unity I need for the Quest to use the above API. Does any of the current Unity versions have native support for the Quest?

 

Again sorry for posting to an old thread but right now the new input system package has its own version of TrackedPoseDriver. As opposed with the "legacy" TrackedPoseDriver in the XRInputs package, is it able to track several Vive trackers at once and is it possible to bind roles for e.g like waist, legs for full-body tracking?

 

Code (CSharp):

1.  
2.  
3. // on start
4. var allDevices = new List<InputDevice>();
5. InputDevices.GetDevices(allDevices);
6. InputDevice tracker = allDevices.FirstOrDefault(d => d.role == InputDeviceRole.HardwareTracker);
7.  
8. // on update
9. tracker.TryGetFeatureValue(CommonUsages.devicePosition, out var pos);        
10.  
11. tracker.TryGetFeatureValue(CommonUsages.deviceRotation, out var rot);
12.  
13. // NOTE!!! pos and rot are in world position so you have to translate it to floor
14.  
15.  

 

I have found information to connect the Vive trackers but they all use old SteamVR plugin. Is there an Unity XR or OpenVR solution yet? What are my options or is SteamVR plugin it?