How to programmatically reset Magic Leap 2 origin to 0,0,0 from Unity?

[clonnqvist]

Environment

Unity 2022.3, ML2 SDK 2.5.0 OpenXR

Question
How can I programmatically reset the Magic Leap 2's origin coordinates to 0,0,0? The device automatically sets its origin at startup and after tracking loss, but I need to trigger this reset through code.

What I've Tried

csharpCopyprivate XRInputSubsystem _inputSubsystem;
_inputSubsystem = XRGeneralSettings.Instance.Manager.activeLoader.GetLoadedSubsystem<XRInputSubsystem>();
_inputSubsystem.TrySetTrackingOriginMode(TrackingOriginModeFlags.Unbounded);
_inputSubsystem.TryRecenter();

This implementation attempts to reset the origin, but the zero point remains unchanged.

Is there a correct way to force the ML2 to reset its origin to 0,0,0?

I am aware of recenter XR origin at start, but it seems not to do proper zero point reset either by using this to measure the head tracking:

InputDevice hmdDevice = InputDevices.GetDeviceAtXRNode(XRNode.CenterEye);

if (hmdDevice.isValid)
{
    if (hmdDevice.TryGetFeatureValue(CommonUsages.devicePosition, out Vector3 position))
    {
        Log($"Head Position: X:{position.x:F2} Y:{position.y:F2} Z:{position.z:F2}");
    }
}

And Magic leap 2 Reference spaces enabled

[etucker]

TryRecenter() and similar XR calls are designed for VR platforms to reset the user's "forward" direction or "floor level." On Magic Leap, the spatial coordinate system is AR-like, defined relative to the environment. Instead of altering the global origin (0,0,0), use a parent transform like XR Origin or ARSessionOrigin:

• Capture the current device position to "reset" the origin.
• Store this offset as the "new zero."

Example:

var xro = FindObjectOfType<Unity.XR.CoreUtils.XROrigin>();
xro?.MoveCameraToWorldLocation(Vector3.zero);
xro?.MatchOriginUpCameraForward(Vector3.up, Vector3.forward);

This approach redefines app content alignment relative to the global origin without modifying it.

Let me know if you have any questions.

[clonnqvist]

Thank you, this is the same code as in recenter from the startup button.

I found a way to achieve the goal

In case someone is trying to solve this still and want more power.

Search this file and open for info:

C:...\Library\PackageCache\com.unity.xr.core-utils@2.3.0\Runtime\XROrigin.cs

1. Rotation Controls:

• RotateAroundCameraUsingOriginUp(float angleDegrees) - Rotates around camera using origin's up vector
• RotateAroundCameraPosition(Vector3 vector, float angleDegrees) - Rotates around camera with custom axis

2. Origin Position & Forward:

• MatchOriginUp(Vector3 destinationUp) - Changes origin's up vector
• MatchOriginUpCameraForward(Vector3 destinationUp, Vector3 destinationForward) - Aligns camera's view direction
• MatchOriginUpOriginForward(Vector3 destinationUp, Vector3 destinationForward) - Aligns physical walking direction

3. Camera Position Controls:

• MoveCameraToWorldLocation(Vector3 desiredWorldLocation) - Teleports camera
• CameraYOffset property - Adjusts camera height (in Device mode)

4. Tracking Mode Controls:

• RequestedTrackingOriginMode property - Can be set to:
  • TrackingOriginMode.NotSpecified
  • TrackingOriginMode.Device
  • TrackingOriginMode.Floor

5. Read-Only Properties:

• CurrentTrackingOriginMode - Current tracking mode
• OriginInCameraSpacePos - Origin position relative to camera
• CameraInOriginSpacePos - Camera position relative to origin
• CameraInOriginSpaceHeight - Camera height relative to origin

6. Object References:

• Camera property - Get/set the XR camera
• Origin property - Get/set the origin GameObject
• CameraFloorOffsetObject property - Get/set floor offset object
• TrackablesParent property - Parent transform for trackables