Update Ext.EXT_MeshFeatures.cs

Amended Code generation for FeatureIdTexture.

build/SharpGLTF.CodeGen/Ext.EXT_MeshFeatures.cs

@@ -8,61 +8,38 @@ namespace SharpGLTF
     class ExtMeshFeaturesExtension : SchemaProcessor
     {
         public override string GetTargetProject() { return Constants.CesiumProjectDirectory; }
-
+    
         private static string RootSchemaUri => Constants.CustomExtensionsPath("EXT_mesh_features", "mesh.primitive.EXT_mesh_features.schema.json");
+    
+        const string ExtensionFeatureIdTextureName = "Feature ID Texture in EXT_mesh_features";
+    
         public override void PrepareTypes(CSharpEmitter newEmitter, SchemaType.Context ctx)
         {
             newEmitter.SetRuntimeName("EXT_mesh_features glTF Mesh Primitive extension", "MeshExtMeshFeatures");
-            newEmitter.SetRuntimeName("Feature ID in EXT_mesh_features", "FeatureID");
-
-            // Todo Trying to fix the code generation for the FeatureIDTexture channel property
-
-            // Schema: from featureIdTexture.schema.json
-            //    "channels": {
-            //        "type": "array",
-            //    "items": {
-            //            "type": "integer",
-            //        "minimum": 0
-            //    },
-            //    "minItems": 1,
-            //    "description": "Texture channels containing feature IDs, identified by index. Feature IDs may be packed into multiple channels if a single channel does not have sufficient bit depth to represent all feature ID values. The values are packed in little-endian order.",
-            //    "default": [
-            //        0
-            //    ]
-            //},
-
-
-            // code generated
-            //                    private static readonly Int32[] _channelsDefault = [
-            //  0
-            //];
-            //        private const int _channelsMinItems = 1;
-            //        private List<Int32> _channels = _channelsDefault;
-
-            // should be?
-            //private static readonly Int32[] _channelsDefault = new Int32[1] { 0 };
-            //private const int _channelsMinItems = 1;
-            //private Int32[] _channels = _channelsDefault;
-
-            // attempts
-
-            //var FeatureIdTextureClass = ctx.FindClass("Feature ID Texture in EXT_mesh_features")
-            //    .GetField("channels")
-            //    .SetDefaultValue("new List<Int32>()");
-            // BT does not work :-( .SetDefaultValue("List<Int32>")
+            newEmitter.SetRuntimeName("Feature ID in EXT_mesh_features", "MeshExtMeshFeatureID");
+            newEmitter.SetRuntimeName(ExtensionFeatureIdTextureName, "MeshExtMeshFeatureIDTexture");            
         }
-
+    
         public override IEnumerable<(string TargetFileName, SchemaType.Context Schema)> Process()
         {
-            yield return ("Ext.CESIUM_ext_mesh_features.g", ProcessRoot());
+            yield return ("Ext.CESIUM_ext_mesh_features.g", ProcessNode());
         }
-
-        private static SchemaType.Context ProcessRoot()
+    
+        private static SchemaType.Context ProcessNode()
         {
             var ctx = SchemaProcessing.LoadSchemaContext(RootSchemaUri);
             ctx.IgnoredByCodeEmitter("glTF Property");
             ctx.IgnoredByCodeEmitter("glTF Child of Root Property");
+            ctx.IgnoredByCodeEmitter("Texture Info");
+    
+            var fld = ctx.FindClass(ExtensionFeatureIdTextureName)
+                .GetField("channels");
+    
+            // for now we simply remove the default value, it can be set
+            // in the constructor or on demand when the APIs are Called.
+            fld.RemoveDefaultValue();                
+    
             return ctx;
-        }
+        }        
     }
-}
+}