ADD Vertex utility class to simplify conversion from and to interleaved vertices.

Refactor JoinVerticesProcess to utilize the new utility.
ADD basic operators for aiColor4D, move to dedicated header and implementation file.
ADD some utility functions to SpatialSort.
ADD my existing Catmull-Clark implementation to Assimp for all model formats with support for subdivision surfaces. Slightly WIP, likely to produce errors on non-closed meshes. Currently only implemented in the AC3D loader.
Switch to byteswap intrinsics instead of inline assembly (bswap). Currently MSVC only.
FIX phong shading in assimp_view.
VertexTriangleAdjacency class now also works on arbitrary polygons - UNTESTED, tbd.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@532 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/ACLoader.h

@@ -169,6 +169,9 @@ protected:
 		// number of subdivisions to be performed on the 
 		// imported data
 		unsigned int subDiv;
+
+		// max angle limit for smoothing
+		float crease;
 	};
 
 
@@ -185,63 +188,53 @@ protected:
 
 	// -------------------------------------------------------------------
 	/** Called by Importer::GetExtensionList() for each loaded importer.
-	 * See BaseImporter::GetExtensionList() for details
-	 */
+	 * See BaseImporter::GetExtensionList() for details */
 	void GetExtensionList(std::string& append);
 
 	// -------------------------------------------------------------------
 	/** Imports the given file into the given scene structure. 
-	 * See BaseImporter::InternReadFile() for details
-	 */
+	 * See BaseImporter::InternReadFile() for details*/
 	void InternReadFile( const std::string& pFile, aiScene* pScene, 
 		IOSystem* pIOHandler);
 
 	// -------------------------------------------------------------------
 	/** Called prior to ReadFile().
 	* The function is a request to the importer to update its configuration
-	* basing on the Importer's configuration property list.
-	*/
+	* basing on the Importer's configuration property list.*/
 	void SetupProperties(const Importer* pImp);
 
 private:
 
 	// -------------------------------------------------------------------
 	/** Get the next line from the file.
-	 *  @return false if the end of the file was reached
-	 */
+	 *  @return false if the end of the file was reached*/
 	bool GetNextLine();
 
-
 	// -------------------------------------------------------------------
 	/** Load the object section. This method is called recursively to
 	 *  load subobjects, the method returns after a 'kids 0' was 
 	 *  encountered.
-	 *  @objects List of output objects
-	 */
+	 *  @objects List of output objects*/
 	void LoadObjectSection(std::vector<Object>& objects);
 
-
 	// -------------------------------------------------------------------
 	/** Convert all objects into meshes and nodes.
 	 *  @param object Current object to work on
 	 *  @param meshes Pointer to the list of output meshes
 	 *  @param outMaterials List of output materials
 	 *  @param materials Material list
-	 *  @param Scenegraph node for the object
-	 */
+	 *  @param Scenegraph node for the object */
 	aiNode* ConvertObjectSection(Object& object,
 		std::vector<aiMesh*>& meshes,
 		std::vector<MaterialHelper*>& outMaterials,
 		const std::vector<Material>& materials,
 		aiNode* parent = NULL);
 
-
 	// -------------------------------------------------------------------
 	/** Convert a material
 	 *  @param object Current object
 	 *  @param matSrc Source material description
-	 *  @param matDest Destination material to be filled
-	 */
+	 *  @param matDest Destination material to be filled */
 	void ConvertMaterial(const Object& object,
 		const Material& matSrc,
 		MaterialHelper& matDest);
@@ -257,6 +250,10 @@ private:
 	// their bf cull flags set are separated.
 	bool configSplitBFCull;
 
+	// Configuration switch: subdivision surfaces are only
+	// evaluated if the value is true.
+	bool configEvalSubdivision;
+
 	// counts how many objects we have in the tree.
 	// basing on this information we can find a
 	// good estimate how many meshes we'll have in the final scene.