How to geometrically align a 3D model to real furniture?
For my video-see-through AR application I want a model to automatically be placed on the biggest found table surface. I achieved the first step: The model is correctly positioned at the table center. However, the orientationis not correct. I want the model to "lie down" on the table, means laying on the back, facing up, while the longest side of the model is orientated just as the longest side of the table - see the following pictures: After a very long time trying, I could not figure out how to align the model correctly. If you have any idea/hint/ or clue I could try, please let me know. Used Asset for testing: Low Poly Human I added an Empty (called ModelPlacer) where I added the script (see below) and pulled this asset in the modelInstance field. Used Meta XR Building Blocks: Camera Rig Passthrough MR Utility Kit Scene Debugger Effect Mesh Hand Tracking Controller Tracking Technical Specifications: Unity 2022.3.50f1 VR-Glasses: Meta Quest 3 Meta MR Utility Kit Code: using Meta.XR.MRUtilityKit; using System.Collections; using System.Collections.Generic; using UnityEngine; public class ModelPlacer : MonoBehaviour { public GameObject modelPrefab; private GameObject modelInstance; void Start() { MRUK.Instance?.RegisterSceneLoadedCallback(OnSceneLoaded); } private void OnSceneLoaded() { SpawnModel(); AlignModelWithSurface(); } public void SpawnModel() { Vector3 spawnPosition = new Vector3(0.0f, 1.0f, -1.0f); modelInstance = Instantiate(modelPrefab, spawnPosition, Quaternion.identity); } public void AlignModelWithSurface() { var largestSurface = MRUK.Instance?.GetCurrentRoom()?.FindLargestSurface(MRUKAnchor.SceneLabels.TABLE); if (modelInstance != null) { if (largestSurface != null) { modelInstance.transform.SetParent(largestSurface.transform); Renderer modelRenderer = modelInstance.GetComponent<Renderer>(); modelInstance.transform.rotation = Quaternion.Euler(-90, 0, 0); Vector3 modelCenter = modelRenderer.bounds.center; Vector3 surfaceCenter = largestSurface.transform.position; Vector3 positionOffset = surfaceCenter - modelCenter; Vector3 adjustedPosition = modelInstance.transform.position + positionOffset; modelInstance.transform.position = adjustedPosition; } else { Debug.LogWarning("No surface found."); } } else { Debug.LogWarning("modelInstance is null."); } } }
Unity app doesn't track predictions correctly
I have an app that is in Unity that is supposed to track my Predictions(ms) but it just displays zero on my headset. Here is my code below: csharp using UnityEngine; using TMPro; public class GetPredAmount : MonoBehaviour { public TMP_Text textComponent; void Start() { } void Update() { var metrics = OVRMetricsToolSDK.Instance.GetLatestMetricsSnapshot(); if (metrics != null && metrics.HasValue) { textComponent.text = metrics.Value.average_prediction_milliseconds.ToString(); } else { textComponent.text = "Metrics not available"; } } } I am using the OVR Metrics Tool unity package
UserAgeCategory Error
Two of our developers got a error in the "UserAgeCategory.Get().OnComplete" callback that just said "400". I can't find anything about what this error message could indicate. Doesn't seem to happen to me I think I'm the only one who "Owns" the game The other are invited to separate branches (not sure if that counts as owning, as it passes the entitlement check), so I'm wondering if this has something to do with developer accounts or something else?
Log in with the Meta user account using PCLink to use Shared Spatial Anchor
Hello, We are developing an app in Unity using the Meta SDK. So far, we have implemented Shared Spatial Anchors, and they work fine when we build the project for Android. We are now trying to build the app for Windows and connect a computer with a Meta Quest 3 device. However, we are unable to log in to the app with Meta. We attempt to log in with the Meta account in the app using the following code: Users.GetLoggedInUser().OnComplete(GetLoggedInUserCallback); We would like to know if it is possible to log in with the Meta user account using PCLink. If so, does it require any extra configuration? Thank you very much.
