3d icons for your Mixed Reality application

using System.IO; using System.Linq; using System.Text; using System.Xml; using UnityEditor; using UnityEditor.Build; using UnityEditor.Build.Reporting; using UnityEngine;

namespace Project.Scripts.Editor { /// <summary> /// Adds a 3d icon to the project and appxmanifest. /// See https://docs.microsoft.com/en-us/windows/mixed-reality/implementing-3d-app-launchers /// </summary> public class MixedReality3dAppLauncher : IPostprocessBuildWithReport { private const string Uap5Namespace = "http://schemas.microsoft.com/appx/manifest/uap/windows10/5"; private const string AppIconSourcePath = "Assets/app-icon.glb"; private const string AppIconAssetPath = "Assets\\app-icon.glb";

public int callbackOrder => 0;

public void OnPostprocessBuild(BuildReport report) { if (report.summary.platform != BuildTarget.WSAPlayer) return; PatchProjectAndManifest(report.summary.outputPath, Application.productName); }

[MenuItem("UWP Tools/Patch Manifest and project")] public static void ManuallyPatch() { var buildLocation = EditorUserBuildSettings.GetBuildLocation(BuildTarget.WSAPlayer); if (!Directory.Exists(buildLocation)) { var defaultOptions = new BuildPlayerOptions(); var options = BuildPlayerWindow.DefaultBuildMethods.GetBuildPlayerOptions(defaultOptions); buildLocation = options.locationPathName; }

PatchProjectAndManifest(buildLocation, Application.productName); }

static void PatchProjectAndManifest(string path, string appName) { var modelPath = Path.Combine(Directory.GetCurrentDirectory(), AppIconSourcePath);

if (!File.Exists(modelPath)) { Debug.LogWarning(" MixedReality3dAppLauncher: Cannot add 3d model - please place one in Assets/app-icon.glb"); return; } var projectPath = Path.Combine(path, appName); CopyModelAndPatchXProj(appName, projectPath, modelPath); PatchAppxWithIcon(projectPath); Debug.Log(" MixedReality3dAppLauncher: Patched with 3d app launcher"); }

private static void CopyModelAndPatchXProj(string appName, string projectPath, string modelPath) { var destinationModelPath = Path.Combine(projectPath, AppIconAssetPath); if (File.GetLastWriteTimeUtc(modelPath) > File.GetLastWriteTimeUtc(destinationModelPath)) File.Copy(modelPath, destinationModelPath, true);

var projectXmlPath = Path.Combine(projectPath, $"{appName}.vcxproj"); var doc = new XmlDocument(); doc.LoadXml(File.ReadAllText(projectXmlPath));

var nsmgr = new XmlNamespaceManager(doc.NameTable); nsmgr.AddNamespace("ns", doc.DocumentElement.NamespaceURI);

var itemGroup = doc.SelectSingleNode("//ns:AppxManifest", nsmgr).ParentNode;

var hasExisting = itemGroup.ChildNodes.Cast<XmlNode>().Any(n => n.Attributes[0].Value == AppIconAssetPath); if (!hasExisting) { Debug.Log(" MixedReality3dAppLauncher: Adding icon include"); var includeNode = doc.CreateNode(XmlNodeType.Element, "None", doc.DocumentElement.NamespaceURI); var includeAttribute = doc.CreateAttribute("Include"); includeAttribute.Value = AppIconAssetPath; includeNode.Attributes.Append(includeAttribute); itemGroup.AppendChild(includeNode);

var deploymentContentNode = doc.CreateNode(XmlNodeType.Element, "DeploymentContent", doc.DocumentElement.NamespaceURI); deploymentContentNode.InnerText = "true"; includeNode.AppendChild(deploymentContentNode); }

using (var writer = new XmlTextWriter(projectXmlPath, Encoding.UTF8)) { writer.Formatting = Formatting.Indented; doc.WriteTo(writer); } }

private static void PatchAppxWithIcon(string projectPath) { var manifestPath = Path.Combine(projectPath, "package.appxmanifest"); var doc = new XmlDocument(); doc.LoadXml(File.ReadAllText(manifestPath));

var nsmgr = new XmlNamespaceManager(doc.NameTable); nsmgr.AddNamespace("ns", doc.DocumentElement.NamespaceURI);

var packageNode = doc.SelectSingleNode("/ns:Package", nsmgr);

var uapNamespace = packageNode.Attributes.Cast<XmlAttribute>().First(a => a.Name == "xmlns:uap").Value; nsmgr.AddNamespace("uap", uapNamespace); nsmgr.AddNamespace("uap5", Uap5Namespace);

if (!packageNode.Attributes.Cast<XmlAttribute>().Any(a => a.Name == "xmlns:uap5")) { var uap5Attribute = doc.CreateAttribute("xmlns:uap5"); uap5Attribute.Value = Uap5Namespace; packageNode.Attributes.Append(uap5Attribute); Debug.Log(" MixedReality3dAppLauncher: Added uap5 namspace to root node"); }

var ignoreNamespaces = packageNode.Attributes.Cast<XmlAttribute>().First(a => a.Name == "IgnorableNamespaces"); if (!ignoreNamespaces.Value.Contains("uap5")) { ignoreNamespaces.Value = ignoreNamespaces.Value + " uap5"; Debug.Log(" MixedReality3dAppLauncher: Added uap5 to IgnorableNamespaces"); }

var defaultTileNode = doc.SelectSingleNode("//uap:DefaultTile", nsmgr); if (!defaultTileNode.HasChildNodes) { var modelNode = doc.CreateNode(XmlNodeType.Element, "uap5:MixedRealityModel", Uap5Namespace); var pathAttribute = doc.CreateAttribute("Path"); pathAttribute.Value = AppIconAssetPath; modelNode.Attributes.Append(pathAttribute); defaultTileNode.AppendChild(modelNode); Debug.Log(" MixedReality3dAppLauncher: Added mixed reality model node"); } else { var modelNode = doc.SelectSingleNode("//uap5:MixedRealityModel", nsmgr); var pathAttribute = modelNode.Attributes.Cast<XmlAttribute>().First(a => a.Name == "Path"); if (pathAttribute.Value != AppIconAssetPath) { pathAttribute.Value = AppIconAssetPath; Debug.Log(" MixedReality3dAppLauncher: Updated model path"); } }

using (var writer = new XmlTextWriter(manifestPath, Encoding.UTF8)) { writer.Formatting = Formatting.Indented; doc.WriteTo(writer); } } } }