- fbx: add support for reading Null node attributes.

code/FBXDocument.cpp

@@ -149,6 +149,9 @@ const Object* LazyObject::Get(bool dieOnError)
 			else if (!strcmp(classtag.c_str(),"Light")) {
 				object.reset(new Light(id,element,doc,name));
 			}
+			else if (!strcmp(classtag.c_str(),"Null")) {
+				object.reset(new Null(id,element,doc,name));
+			}
 		}
 		else if (!strncmp(obtype,"Deformer",length)) {
 			if (!strcmp(classtag.c_str(),"Cluster")) {

code/FBXDocument.h

@@ -261,6 +261,16 @@ private:
 };
 
 
+/** DOM base class for FBX null markers attached to a node */
+class Null : public NodeAttribute
+{
+public:
+
+	Null(uint64_t id, const Element& element, const Document& doc, const std::string& name);
+	~Null();
+};
+
+
 /** DOM base class for FBX lights attached to a node */
 class Light : public NodeAttribute
 {

code/FBXNodeAttribute.cpp

@@ -64,7 +64,12 @@ NodeAttribute::NodeAttribute(uint64_t id, const Element& element, const Document
 	const Scope& sc = GetRequiredScope(element);
 
 	const std::string& classname = ParseTokenAsString(GetRequiredToken(element,2));
-	props = GetPropertyTable(doc,"NodeAttribute.Fbx" + classname,element,sc);
+
+	// hack on the deriving type but Null attributes are the only case in which
+	// the property table is by design absent and no warning should be generated
+	// for it.
+	const bool is_null = !strcmp(classname.c_str(), "Null");
+	props = GetPropertyTable(doc,"NodeAttribute.Fbx" + classname,element,sc, is_null);
 }
 
 
@@ -132,6 +137,21 @@ Light::~Light()
 {
 }
 
+
+// ------------------------------------------------------------------------------------------------
+Null::Null(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+: NodeAttribute(id,element,doc,name)
+{
+
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Null::~Null()
+{
+
+}
+
 }
 }