-typedef cpPlugins::Extensions::QuadEdgeMesh< TScalar, Dimension > TMesh;
-typedef cpPlugins::Extensions::OpenGLMeshMapper< TMesh > TMeshMapper;
+using namespace cpPlugins::Extensions;
+typedef DataStructures::QuadEdgeMesh< TScalar, Dimension > TMesh;
+typedef Visualization::OpenGLMeshMapper< TMesh > TMeshMapper;