- fbx: add DOM layer to represent the parsed FBX file in-memory, capturing the essential semantics we need for importing.

code/FBXDocument.cpp

@@ -0,0 +1,173 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2012, assimp team
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, 
+with or without modification, are permitted provided that the 
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file  FBXDocument.cpp
+ *  @brief Implementation of the FBX DOM classes
+ */
+#include "AssimpPCH.h"
+
+#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
+
+#include "FBXParser.h"
+#include "FBXDocument.h"
+#include "FBXUtil.h"
+
+namespace {
+
+	using namespace Assimp;
+	using namespace Assimp::FBX;
+
+	// ------------------------------------------------------------------------------------------------
+	// signal DOM construction error, this is always unrecoverable. Throws DeadlyImportError.
+	void DOMError(const std::string& message, Element* element = NULL)
+	{
+		throw DeadlyImportError(element ? Util::AddTokenText("FBX-DOM",message,element->KeyToken()) : ("FBX-DOM " + message));
+	}
+}
+
+namespace Assimp {
+namespace FBX {
+
+// ------------------------------------------------------------------------------------------------
+LazyObject::LazyObject(const Element& element)
+: element(element)
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+LazyObject::~LazyObject()
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+const Object* LazyObject::Get()
+{
+	if (object.get()) {
+		return object.get();
+	}
+
+	// XXX
+	return NULL;
+}
+
+// ------------------------------------------------------------------------------------------------
+Object::Object(const Element& element)
+: element(element)
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+Object::~Object()
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+Geometry::Geometry(const Element& element)
+: Object(element)
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+Geometry::~Geometry()
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+MeshGeometry::MeshGeometry(const Element& element)
+: Geometry(element)
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+MeshGeometry::~MeshGeometry()
+{
+
+}
+
+// ------------------------------------------------------------------------------------------------
+Document::Document(const Parser& parser)
+: parser(parser)
+{
+
+	const Scope& sc = parser.GetRootScope();
+	const Element* const eobjects = sc["Objects"];
+	if(!eobjects || !eobjects->Compound()) {
+		DOMError("no Objects dictionary found");
+	}
+
+	const Scope* const sobjects = eobjects->Compound();
+	BOOST_FOREACH(const ElementMap::value_type& el, sobjects->Elements()) {
+		
+		// extract ID 
+		const TokenList& tok = el.second->Tokens();
+		
+		if (tok.empty()) {
+			DOMError("expected ID after object key",el.second);
+		}
+
+		const char* err;
+
+		const uint64_t id = ParseTokenAsID(*tok[0], err);
+		if(err) {
+			DOMError(err,el.second);
+		}
+
+		objects[id] = new LazyObject(*el.second);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+Document::~Document()
+{
+	
+}
+
+} // !FBX
+} // !Assimp
+
+#endif
+