MRTK 3 Pinch Recognition On HoloLens 2
Hi everyone, this is my first time posting here. Please let me know if I messed up something in this post. I am optimizing a HoloLens 2 application developed with MRTK 3 in Unity, and I have been trying to improve the sensitivity of pinch recognition. In other words, what I wish to achieve is that the object manipulators in the application are only activated by pinching when the user’s thumb-forefinger distance becomes 0 (or at the least very close to 0). I set the pinch open threshold and the pinch closed threshold of the hands aggregator subsystem of MRTK 3 to 0.08 and 0.03, hoping that MRTK 3 will only recognize pinch in the more sensitive way mentioned above. However, the object manipulators are still activated by pinching even when the user’s thumb and forefinger are quite far away (about one half of the length of the user’s forefinger) from each other. Is this because of the hardware limitation of HoloLens 2? Is there any possibility that I can improve the pinch recognition on HoloLens 2? Big thanks in advance!UWP app network connection blocked by hololens 2 windows firewall
Hello, my UWP app, which was installed on the HoloLens, has encountered an issue and is now unable to connect to the internet.I checked the hololens diagnostic log and it stated the following event: "Windows Defender Firewall was unable to notify the user that it blocked an application from accepting incoming connections on the network. Reason: The application is non interactive Application Path:.....". My development setup includes Unity 2018.4.11f1 and Visual Studio 2019. The capability setting in AppxManifest file is: <Capabilities> <Capability Name="internetClient" /> <Capability Name="internetClientServer" /> <Capability Name="privateNetworkClientServer"/> <uap:Capability Name="documentsLibrary" /> <uap2:Capability Name="spatialPerception" /> <DeviceCapability Name="webcam" /> <DeviceCapability Name="microphone" /> </Capabilities> The application tested all OK in unity editor but when loaded to hololens it failed to establish a network connection. Does anyone has any idea why the app has been blocked by hololens firewall? Thanks
Unity App Stuck Loading On HoloLens 2
I am following this document andthis tutorialto test AR on a HoloLens 2, and I go to the part where I have a Unity game with all the proper setup (ie. build settings are correct, I used Unity AR feature tool, etc.) and with 2 squares. I built the project and opened the solution, and then I set the configuration to "Release," platform to "ARM64," and set it to "Device" because I have the HoloLens directly connected to my laptop. I selected the Unity app solution and right-clicked it to "Set as Startup Project." Then, I pressed the green button next to "Device" to build and deploy it. The first time, I got prompted to enter a pin after a bit, which I did, and once the deployment was done, the app showed in the "All Apps" section, but once I clicked on it, I got a window that had a white background with a box with an X in the middle of the screen. On top, there is a blue circle with a white loading circle that was loading for forever. I tried rebuilding it multiple times, recreating the Unity project in a new project, and double-checking my Unity build settings, but those were correct. How can I fix this issue? I'm using Unity version 2022.3.20f1. Thank you, Avinash Devineni Edit: Now it started doing the environment scanning visual, but still shows a white box, although there is no blue loading circle anymore. I didn't change anything or redeploy it to the HoloLens 2, so I'm not sure why it started doing something different.
HoloLens2 Microphone Not Recognizing Speech Commands
Hololens is picking up my audio, but none of my voice commands are registering. The audio picked up from the microphone is faint too. All OS and app updates are already installed. Device has been powered off and booted back up. Tried factory resetting device too. Not sure how to fix issue. Currently developing in Unity.
Watch Kubota Environmental Engineering Use Cases Leveraging HoloLens 2!
Kubota Environmental Engineering (Japan) and Meister Corporation teamed up to develop technology for optimized inspections of infrastructure with HoloLens 2. Read the full story and video: English: Story + Video Japanese: Story + Video
Web navigation using WebView 2 in Hololens 2 + Unity (MRTK2)
Hi! I am trying out WebView2 Preview on HoloLens 2 using Unity 2022 and MRTK 2.8. Everything works great but I am not able to click on web's buttons, do scroll, etc. I have found this section of the documentation ->https://learn.microsoft.com/en-gb/microsoft-edge/webview2/get-started/hololens2#inputwhich seems to point to web navigation, but I am not able to get it working. Any ideas? Thanks!HoloLens 2 + Mixed Reality Applications | Technical Datasheet
Click below to download HoloLens 2 Technical Datasheet Microsoft HoloLens 2 is an untethered, self-contained holographic device that allows users to leverage enterprise ready mixed reality (MR) solutionsand Azure Mixed Reality while working heads-up and hands-free. By merging the real world with the digital world, MR users across industries can benefit from enriched remote collaboration, increased precision of work, minimized human error, fewer resource gaps, better knowledge retention, and more. Pair HoloLens 2 with a comprehensive ecosystem of apps and services from Microsoft and third-party partners for maximum ROI and productivity impact.3d model quality different in unity and hololens
Hello I'm developing an application for Hololens 2 and I'm having a problem with the quality of the 3d model when I run it on Hololens 2. In Unity, the quality of the clothing animation is good (image on the left) but when I export it to hololens (image on the right) the quality decreases a lot. Could anyone help me with this problem?Open PDF Document in Hololens 2 from the file browser
I am trying to open a pdf document located in the persistent data path, in the file explorer, in the hololens 2 device but when trying to open it by c# code in Unity, nothing happens. I've tried with the code provided in the question locted inthis linkand it appear to happen an exception that sais this: "Exception of type 'System.Exception' was thrown". Does anyone know what is happening and how can I fix it? This is the code I've used to do it: using UnityEngine; using UnityEngine.Networking; using System; using System.IO; using System.Collections; using System.Diagnostics; using TMPro; using System.Threading.Tasks; #if !UNITY_EDITOR && UNITY_WSA using System; using System.Threading.Tasks; using Windows.System; using Windows.Storage; using Windows.Storage.Streams; using Windows.Data.Pdf; #endif public class PdfDownloader : MonoBehaviour { public string pdfUrl = "https://grados.ugr.es/primaria/pages/infoacademica/archivos/ejemplostfg/!"; public string destinationPath = "my-file.pdf"; int pg = 0; // Definir e inicializar la variable pg [SerializeField] private GameObject PDFPlane = null; [SerializeField] private TextMeshProUGUI text = null; #if !UNITY_EDITOR && UNITY_WSA PdfDocument pdfDocument; #endif public void download() { StartCoroutine(DownloadPdf()); } IEnumerator DownloadPdf() { UnityWebRequest www = UnityWebRequest.Get(pdfUrl); yield return www.SendWebRequest(); if (www.result != UnityWebRequest.Result.Success) { UnityEngine.Debug.LogError("Error al descargar el archivo PDF: " + www.error); } else { string filePath = Path.Combine(Application.persistentDataPath, destinationPath); SaveFile(filePath, www.downloadHandler.data); UnityEngine.Debug.Log("Archivo PDF descargado correctamente en: " + filePath); text.text += "Archivo PDF descargado correctamente en: " + filePath+ "\n"; // Abrir el archivo PDF LoadAsync(); text.text += "Abierto" + "\n"; } } void SaveFile(string path, byte[] data) { try { // Crear el directorio si no existe string directory = Path.GetDirectoryName(path); if (!Directory.Exists(directory)) { Directory.CreateDirectory(directory); text.text += "Creado" + "\n"; } // Escribir los datos del archivo en el archivo especificado File.WriteAllBytes(path, data); text.text += "Escrito" + "\n"; } catch (Exception e) { UnityEngine.Debug.LogError("Error al guardar el archivo: " + e.Message); text.text += "Error al guardar el archivo: " + e.Message+ "\n"; } } public async void LoadAsync() { string path = Application.persistentDataPath; #if !UNITY_EDITOR && UNITY_WSA text.text += "Empiezo "+ "\n"; try { StorageFolder storageFolder = await StorageFolder.GetFolderFromPathAsync(path); /*StorageFolder storageFolder = KnownFolders.CameraRoll;*/ text.text += "Empiezo 2 "+ "\n"; StorageFile sampleFile = await storageFolder.GetFileAsync("my-file.pdf"); text.text += "Empiezo 3 "+ "\n"; //pdfDocument is an instanced object of type PdfDocument pdfDocument = await PdfDocument.LoadFromFileAsync(sampleFile); text.text += "Folder path 2: " + storageFolder + "\n"; } catch (Exception e) { text.text += "1: " + e.Message; } text.text += "listo"; #endif } public async void ChangePageAsync() { text.text += "Voy" + "\n"; #if !UNITY_EDITOR && UNITY_WSA text.text += "Empiezo "+ "\n"; //pg is the page to load using (PdfPage firstPage = pdfDocument.GetPage((uint)pg)) { InMemoryRandomAccessStream stream = new InMemoryRandomAccessStream(); await firstPage.RenderToStreamAsync(stream); MemoryStream tempStream = new MemoryStream(); await stream.AsStream().CopyToAsync(tempStream); byte[] imgBytes = new byte[16 * 1024]; imgBytes = tempStream.ToArray(); Texture2D imgTex = new Texture2D(2048, 2048, TextureFormat.BC7, false); imgTex.LoadImage(imgBytes); imgTex.filterMode = FilterMode.Bilinear; imgTex.wrapMode = TextureWrapMode.Clamp; MeshRenderer meshRenderer = PDFPlane.GetComponent<MeshRenderer>(); Material mat = meshRenderer.material; mat.SetTexture("_MainTex", imgTex); mat.mainTextureScale = new Vector2(1, 1); text.text += "pg: " + pg + "\n"; } #endif } } In the code, I first download it and then try open it. The text.text are debugging lines I've added. The pdf URL is an example pdf obtained from google. I want to show using an Unity app a pdf that has been downloaded before a pdf, avoiding the limitations tah hololens 2 has when opening a local file.
