XR Simulation: requestedDetectionMode not working

[micsanbr]

1. Create an empty scene
2. Add "AR Session"
3. Add "XR Origin (Mobile AR)"
4. Select "XR Origin (Mobile AR)"
5. Add a "AR Plane Manager" to the XR Origin
6. Create a new AR Default Plane into the scene, turn it into a Prefab and delete the reference from the scene
7. Assign the AR Default Plane prefab to the Plane Prefab of the AR Plane Manager
8. Set the Detection mode of the AR Plane Manager to Horizontal only (disable Vertical)
9. Test using the XR Simulation package directly in the editor.

Expected behavior It should detect only horizontal planes.

Actual behavior It detects both planes.

Additional note: The UI still uses detectionMode which gets a warning saying it's obsolete. https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@5.1/manual/features/plane-detection.html Setting / getting RequestedDetectionMode and currentDetectionMode (readonly) don't seem to do anything. https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@5.1/api/UnityEngine.XR.ARFoundation.ARPlaneManager.html Pretty confusing.

• Testing in Editor
• Unity version 2022.3.12f1
• ARFoundation version 5.1

Workaround

void OnPlanesChanged(ARPlanesChangedEventArgs args) {
        foreach (ARPlane plane in args.added)
        {
            // Check whether the plane is a vertical plane and disable it
            if (plane.alignment == PlaneAlignment.Vertical)
            {
                plane.gameObject.SetActive(false);
            }
        }

// ... other stuff
}

[andyb-unity]

Thanks @micsanbr. We've confirmed this issue on our end and filed a bug for a future fix. We'll update this issue when that work is assigned to a developer and a fix is merged in.

[andyb-unity]

This will be fixed in the 5.1.2 release.

[ankur-unity]

Fixed in 5.1.2. Feel free to open another issue if you have further concerns. https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@5.1/changelog/CHANGELOG.html#fixed