Extract glTF utility to its own project. (#801)

* PR to extract the glTF utilities in to their own project.

Resolves #800

* Version bump

* Added string extensions for analysing file names from URI paths for glTF web loading

* Addressed feedback

* Updated Examples branch

* Updated Submodules/Examples and Submodules/WindowsMixedReality to paired glTF updates

* Reverted Examples PR and switched it to use the new glTF package
Uplifted Core version dependency for Submodules

Co-authored-by: Stephen Hodgson <hodgson.designs@gmail.com>

Editor/BuildAndDeploy/BuildDeployWindow.cs

@@ -13,7 +13,6 @@
 using UnityEngine;
 using XRTK.Editor.Utilities;
 using XRTK.Editor.Utilities.USB;
-using XRTK.Utilities.Gltf;
 using XRTK.Utilities.WebRequestRest;
 using XRTK.Utilities.WindowsDevicePortal;
 using XRTK.Utilities.WindowsDevicePortal.DataStructures;
@@ -525,17 +524,6 @@ private void AppxBuildGUI()
 
             var prevFieldWidth = EditorGUIUtility.fieldWidth;
 
-            EditorGUIUtility.fieldWidth = 120;
-            var appIconAssetObject = AssetDatabase.LoadAssetAtPath<GltfAsset>(UwpBuildDeployPreferences.MixedRealityAppIconPath);
-
-            EditorGUI.BeginChangeCheck();
-            appIconAssetObject = EditorGUILayout.ObjectField(appIconLabel, appIconAssetObject, typeof(GltfAsset), false) as GltfAsset;
-
-            if (EditorGUI.EndChangeCheck())
-            {
-                UwpBuildDeployPreferences.MixedRealityAppIconPath = AssetDatabase.GetAssetPath(appIconAssetObject);
-            }
-
             EditorGUIUtility.fieldWidth = prevFieldWidth;
             GUILayout.FlexibleSpace();
             GUILayout.EndHorizontal();

Runtime/Extensions/StringExtensions.cs

@@ -94,5 +94,23 @@ public static string ToForwardSlashes(this string value)
         {
             return value.Replace(BackSlash, ForwardSlash);
         }
+
+        /// <summary>
+        /// Returns the URI path, excluding the filename
+        /// </summary>
+        /// <param name="value"></param>
+        public static string PathFromURI(this string value)
+        {
+            return value.Substring(0, value.LastIndexOf("/") + 1);
+        }
+
+        /// <summary>
+        /// Returns the filename from a URI path
+        /// </summary>
+        /// <param name="value"></param>
+        public static string FilenameFromURI(this string value)
+        {
+            return value.Substring(value.LastIndexOf("/") + 1, value.Length - value.LastIndexOf("/") - 1);
+        }
     }
 }

Runtime/Interfaces/Providers/Controllers/IMixedRealityController.cs

@@ -93,19 +93,9 @@ public interface IMixedRealityController
         /// Attempts to load the controller model render settings from the <see cref="Definitions.Controllers.MixedRealityControllerVisualizationProfile"/>
         /// to render the controllers in the scene.
         /// </summary>
-        /// <param name="glbData">The raw binary glb data of the controller model, typically loaded from the driver.</param>
         /// <param name="useAlternatePoseAction">Should the rendered controller use the alternate pose action?</param>
         /// <returns>True, if controller model is being properly rendered.</returns>
-        void TryRenderControllerModel(byte[] glbData = null, bool useAlternatePoseAction = false);
-
-        /// <summary>
-        /// Attempts to load the controller model render settings from the <see cref="Definitions.Controllers.MixedRealityControllerVisualizationProfile"/>
-        /// to render the controllers in the scene.
-        /// </summary>
-        /// <param name="glbData">The raw binary glb data of the controller model, typically loaded from the driver.</param>
-        /// <param name="useAlternatePoseAction">Should the rendered controller use the alternate pose action?</param>
-        /// <returns>True, if controller model is being properly rendered.</returns>
-        Task TryRenderControllerModelAsync(byte[] glbData = null, bool useAlternatePoseAction = false);
+        void TryRenderControllerModel(bool useAlternatePoseAction = false);
 
         /// <summary>
         /// Updates the controller's state.

Runtime/Providers/Controllers/BaseController.cs

@@ -16,8 +16,6 @@
 using XRTK.Interfaces.Providers.Controllers;
 using XRTK.Services;
 using XRTK.Utilities;
-using XRTK.Utilities.Gltf.Schema;
-using XRTK.Utilities.Gltf.Serialization;
 using Object = UnityEngine.Object;
 
 namespace XRTK.Providers.Controllers
@@ -203,33 +201,16 @@ private IMixedRealityPointer[] AssignControllerMappings(MixedRealityInteractionM
         }
 
         /// <inheritdoc />
-        public async void TryRenderControllerModel(byte[] glbData = null, bool useAlternatePoseAction = false) => await TryRenderControllerModelAsync(glbData, useAlternatePoseAction);
-
-        /// <summary>
-        /// Attempts to load the controller model render settings from the <see cref="MixedRealityControllerVisualizationProfile"/>
-        /// to render the controllers in the scene.
-        /// </summary>
-        /// <param name="glbData">The raw binary glb data of the controller model, typically loaded from the driver.</param>
-        /// <param name="useAlternatePoseAction">Should the visualizer be assigned the alternate pose actions?</param>
-        public async Task TryRenderControllerModelAsync(byte[] glbData = null, bool useAlternatePoseAction = false)
+        public void TryRenderControllerModel(bool useAlternatePoseAction = false)
         {
             if (visualizationProfile.IsNull())
             {
                 Debug.LogWarning($"Missing {nameof(visualizationProfile)} for {GetType().Name}");
                 return;
             }
 
-            GltfObject gltfObject = null;
             GameObject controllerModel = null;
 
-            // if we have model data from the platform and the controller has been configured to use the default model, attempt to load the controller model from glbData.
-            if (glbData != null)
-            {
-                gltfObject = GltfUtility.GetGltfObjectFromGlb(glbData);
-                await gltfObject.ConstructAsync();
-                controllerModel = gltfObject.GameObjectReference;
-            }
-
             // If we didn't get an override model, and we didn't load the driver model,
             // then get the global controller model for each hand.
             if (controllerModel.IsNull())
@@ -244,31 +225,18 @@ public async Task TryRenderControllerModelAsync(byte[] glbData = null, bool useA
                         break;
                 }
             }
-
+            
             // If we've got a controller model, then place it in the scene and get/attach the visualizer.
             if (!controllerModel.IsNull())
             {
                 var playspaceTransform = MixedRealityToolkit.TryGetSystem<IMixedRealityCameraSystem>(out var cameraSystem)
                     ? cameraSystem.MainCameraRig.PlayspaceTransform
                     : CameraCache.Main.transform.parent;
 
-                // If the model was loaded from a system template
-                if (gltfObject != null)
-                {
-                    controllerModel.name = $"{GetType().Name}_Visualization";
-                    controllerModel.transform.SetParent(playspaceTransform);
-                    var visualizationType = visualizationProfile.ControllerVisualizationType;
-                    controllerModel.AddComponent(visualizationType.Type);
-                    Visualizer = controllerModel.GetComponent<IMixedRealityControllerVisualizer>();
-                }
-                // If the model was a prefab
-                else
-                {
-                    var controllerObject = Object.Instantiate(controllerModel, playspaceTransform);
-                    Debug.Assert(controllerObject != null);
-                    controllerObject.name = $"{GetType().Name}_Visualization";
-                    Visualizer = controllerObject.GetComponent<IMixedRealityControllerVisualizer>();
-                }
+                var controllerObject = Object.Instantiate(controllerModel, playspaceTransform);
+                Debug.Assert(controllerObject != null);
+                controllerObject.name = $"{GetType().Name}_Visualization";
+                Visualizer = controllerObject.GetComponent<IMixedRealityControllerVisualizer>();
 
                 // If a visualizer exists, set it up and bind it to the controller
                 if (Visualizer != null)