refactored async 3d model loading error handling

removed done //TODO comments

Assets/RothenburgAR/Scripts/Exhibition/ExhibitBehaviour.cs

@@ -48,7 +48,6 @@ namespace RothenburgAR.Exhibition
             if (newTitle.Position.HasValue)
                 TitleBehaviour.transform.localPosition = newTitle.Position.Value;
 
-            //TODO set scale to resize the title relative to tracker size
             TitleBehaviour.DataText = newTitle.Text;
         }
 

Assets/RothenburgAR/Scripts/PointOfInterest/PoiApiDataPreloader.cs

@@ -77,7 +77,6 @@ namespace RothenburgAR.PointOfInterest
                     var modelDescription = new PoiModelDescription();
                     modelDescription.ModelPath = PathHelper.CombinePaths(PathHelper.MediaPath, mediaID, mediaID + ".obj");
 
-                    //TODO dont have model size information, find a way to scale model to fit into view?
                     modelDescription.ModelPrefabName = string.Empty;
                     modelDescription.Scale = Vector3.one;
                     modelDescription.Position = Vector3.zero;

Assets/RothenburgAR/Scripts/PointOfInterest/PoiData.cs

@@ -32,11 +32,16 @@ namespace RothenburgAR.PointOfInterest
             }
         }
 
+        public bool ModelLoadFailed { get; private set; }
+
         public IEnumerator LoadModel()
         {
+            ModelLoadFailed = false;
             if (!File.Exists(ModelDescription.ModelPath))
             {
-                throw new FileNotFoundException(ModelDescription.ModelPath + " does not exist;");
+                Debug.LogError(ModelDescription.ModelPath + " does not exist;");
+                ModelLoadFailed = true;
+                yield break;
             }
 
             var loader = new OBJLoader(ModelDescription.ModelPath);
@@ -49,10 +54,18 @@ namespace RothenburgAR.PointOfInterest
                 yield return new WaitForSecondsRealtime(.1f);
             }
 
-            var model = loader.BuildUnityObjects();
+            try
+            {
+                var model = loader.BuildUnityObjects();
 
-            model.SetActive(false);
-            _modelPrefab = model;
+                model.SetActive(false);
+                _modelPrefab = model;
+            }
+            catch (System.Exception)
+            {
+                ModelLoadFailed = true;
+                yield break;
+            }
         }
 
         public GameObject GetModelPrefab()

Assets/RothenburgAR/Scripts/UI/DetailsPanelBehaviour.cs

@@ -60,12 +60,19 @@ namespace RothenburgAR.UI
                 Icon3D.SetActive(true);
                 IconLoading.SetActive(true);
 
-                while (!data.IsModelLoaded)
+                while (!data.IsModelLoaded && !data.ModelLoadFailed)
                 {
                     yield return new WaitForSecondsRealtime(.1f);
                 }
             }
 
+            if (data.ModelLoadFailed)
+            {
+                //TODO maybe display error message to user
+                RemoveModel();
+                yield break;
+            }
+
             try
             {
                 SetModel(data.InstantiateModelPrefab());
@@ -87,7 +94,7 @@ namespace RothenburgAR.UI
             var mesh = meshFilter.mesh;
             if (mesh == null) throw new Exception("No Mesh in Model!");
 
-            //TODO remove when model metadata rotation is no longer a thing
+            //TODO remove when metadata model rotation is no longer a thing
             mesh.RecalculateBounds();
 
             var scale = 1f / Mathf.Max(mesh.bounds.size.x, mesh.bounds.size.y, mesh.bounds.size.z);

Assets/RothenburgAR/Scripts/Updater/HttpHandler.cs

@@ -57,7 +57,6 @@ namespace RothenburgAR.Updater
         {
             get
             {
-                //TODO read documentation 
                 return Operation.isDone && Request.isDone;
             }
         }

Assets/RothenburgAR/Scripts/Updater/UpdaterBehaviour.cs

@@ -26,10 +26,6 @@ namespace RothenburgAR.Updater
 
         void Start()
         {
-            /*	TODO: allg. fragen
-                punkt zum eintragen der credentials?
-            */
-
 #if !UNITY_EDITOR
             logFileHandler = new LogFileHandler();
 #else