How do I reset the position of the headset?

[ghostravenstorm]

I’m using a HoloLens to develop an AR application, and I need a manual function that resets the position.
I’m very confused on how to achieve this looking at the docs.
There’s Microsoft’s MRTK for Unity, the legacy XR plugin for Unity, and the new XR subsystem that I’m still wrapping my head around.

When I started this project I solely used just the MRTK following documentation for that. Now that I see a bunch of different ways to reset the position, and I haven’t found something that works yet, I’m very confused on what I should be following.

I’m working in Unity 2019.4

I tried this first VR.InputTracking.Recenter() but that doesn’t compile. It either doesn’t exist anymore in 2019.4 or I just can’t find the namespace it’s in.

Reset HoloLens Origin

Is there a way to reset the HoloLens camera origin. I’m finding that if I get too close to a wall, or look down, I get the lost tracking notification, then sometimes my height doesn’t match where I was. I’d like to be able to reset the Camera’s origins rather than having to set a world anchor. Anyone know if there’s that ability? I’ve tried resetting the camera position, but that doesn’t seem to help me.

Then I tried this from the new XR subsystem in the scripting API, but my XRInputSubsystem object always appears to be null, so I’m not sure how to use it. Having trouble finding concise examples.

Unity - Scripting API: XRInputSubsystem

inputSystem = new XRInputSubsystem();
inputSystem.Start();

Then I found this gitgist that shows a full initialization of what I was previously triyng. But that also led nowhere, because my XRGeneralSettings about is always null too. Even in the HoloLens app.

https://gist.github.com/demonixis/fc2f9154cd9d87e5f1c6a7a1de2dbb70

I’ve also ran into this thread trying to track down examples, but it’s really dense and overkill for what I"m triyng to do.

Any example of the new 2019.1 XR input system?

I'm so excited to see there is a new XR input mapping system in 2019.1: https://docs.unity3d.com/2019.1/Documentation/Manual/xr_input.html But haven't been able to find any code example showing how to use it. Does anyone know how to do something as simple as say spawning a cube in the position of the controller when the trigger is pressed? Any help would be much appreciated!!

I just want a quick and simple way to reset the headset position and orientation.

I’m also not having any luck finding a “reset” or “recenter” function in the MRTK API either.
https://microsoft.github.io/MixedRealityToolkit-Unity/api/Microsoft.MixedReality.Toolkit.html

[Vatoeter]

Im using it like this. While i don’t use the hololens i use the unity XR Plugin in system with the Windows XR Plugin.

Hopefully that helps.

List<InputDevice> devices = new List<InputDevice>();
InputDevices.GetDevices( devices );
if ( devices.Count != 0 )
{
    devices[0].subsystem.TryRecenter();
}

(Of course if you have multiple InputDevices you would need to get the correct one.)

[flintmech]

Can’t use the new XR Plugin system in 2019.4 because its new version of the Remoting tool doesn’t work with HoloLens 2 and/or the latest version of MRTK yet (2.4.0 as of typing). Remoting is too critical to give up.

XR.InputTracking.Recenter() compiles with a deprecation warning. I made sure my MRTK profile’s Target Scale is set to “Standing” as specified in the docs, but it doesn’t seem to do anything.