Add cesium ext structural metadata

build/SharpGLTF.CodeGen/Ext.EXT_Structural_Metadata.cs

@@ -0,0 +1,69 @@
+using SharpGLTF.CodeGen;
+using SharpGLTF.SchemaReflection;
+using System.Collections.Generic;
+
+namespace SharpGLTF
+{
+    class ExtStructuralMetadataExtension : SchemaProcessor
+    {
+        public override string GetTargetProject() { return Constants.CesiumProjectDirectory; }
+
+        const string ExtensionPropertyTexturePropertyName = "Property Texture Property in EXT_structural_metadata";
+
+        private static string RootSchemaUri => Constants.CustomExtensionsPath("EXT_structural_metadata", "glTF.EXT_structural_metadata.schema.json");
+        private static string MeshPrimitiveSchemaUri => Constants.CustomExtensionsPath("EXT_structural_metadata", "mesh.primitive.EXT_structural_metadata.schema.json");
+
+        public override void PrepareTypes(CSharpEmitter newEmitter, SchemaType.Context ctx)
+        {
+            newEmitter.SetRuntimeName("EXT_structural_metadata glTF extension", "EXTStructuralMetaData");
+            newEmitter.SetRuntimeName("Property Table in EXT_structural_metadata", "PropertyTable");
+            newEmitter.SetRuntimeName("Schema in EXT_structural_metadata", "StructuralMetadataSchema");
+            newEmitter.SetRuntimeName("Property Table Property in EXT_structural_metadata", "PropertyTableProperty");
+            newEmitter.SetRuntimeName("Property Texture in EXT_structural_metadata", "PropertyTexture");
+            newEmitter.SetRuntimeName("Property Texture Property in EXT_structural_metadata", "PropertyTextureProperty");
+            newEmitter.SetRuntimeName("Property Attribute Property in EXT_structural_metadata", "PropertyAttributeProperty");
+            newEmitter.SetRuntimeName("Class Property in EXT_structural_metadata", "ClassProperty");
+            newEmitter.SetRuntimeName("Class in EXT_structural_metadata", "StructuralMetadataClass");
+            newEmitter.SetRuntimeName("Enum Value in EXT_structural_metadata", "EnumValue");
+            newEmitter.SetRuntimeName("Enum in EXT_structural_metadata", "StructuralMetadataEnum");
+
+            newEmitter.SetRuntimeName("BOOLEAN-ENUM-MAT2-MAT3-MAT4-SCALAR-STRING-VEC2-VEC3-VEC4", "ElementType");
+            newEmitter.SetRuntimeName("FLOAT32-FLOAT64-INT16-INT32-INT64-INT8-UINT16-UINT32-UINT64-UINT8", "DataType");
+            newEmitter.SetRuntimeName("INT16-INT32-INT64-INT8-UINT16-UINT32-UINT64-UINT8", "IntegerType");
+            newEmitter.SetRuntimeName("UINT16-UINT32-UINT64-UINT8", "StringOffsets");
+        }
+
+        public override IEnumerable<(string TargetFileName, SchemaType.Context Schema)> Process()
+        {
+            yield return ("Ext.CESIUM_ext_structural_metadata_root.g", ProcessRoot());
+            yield return ("Ext.CESIUM_ext_structural_metadata_primitive.g", ProcessMeshPrimitive());
+        }
+
+        private static SchemaType.Context ProcessRoot()
+        {
+            var ctx = SchemaProcessing.LoadSchemaContext(RootSchemaUri);
+            ctx.IgnoredByCodeEmitter("glTF Property");
+            ctx.IgnoredByCodeEmitter("glTF Child of Root Property");
+            ctx.IgnoredByCodeEmitter("Texture Info");
+            var fld = ctx.FindClass(ExtensionPropertyTexturePropertyName).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;
+        }
+
+        private static SchemaType.Context ProcessMeshPrimitive()
+        {
+            var ctx = SchemaProcessing.LoadSchemaContext(MeshPrimitiveSchemaUri);
+            ctx.IgnoredByCodeEmitter("glTF Property");
+            ctx.IgnoredByCodeEmitter("glTF Child of Root Property");
+            ctx.IgnoredByCodeEmitter("Texture Info");
+            return ctx;
+        }
+
+
+    }
+}

build/SharpGLTF.CodeGen/Program.cs

@@ -62,6 +62,9 @@ static void Main(string[] args)
 
             processors.Add(new ExtInstanceFeaturesExtension());
 
+            processors.Add(new ExtStructuralMetadataExtension());
+
+
             // ----------------------------------------------  process all files
 
             foreach (var processor in processors)

build/SharpGLTF.CodeGen/SchemaProcessing.cs

@@ -24,6 +24,7 @@ public static SchemaType.Context LoadSchemaContext(string srcSchema)
 
             var settings = new NJsonSchema.CodeGeneration.CSharp.CSharpGeneratorSettings
             {
+
                 Namespace = "glTf.POCO",
                 ClassStyle = NJsonSchema.CodeGeneration.CSharp.CSharpClassStyle.Poco
             };