bool sgFileManager::ImportDXF(const sgCScene* scen, const char* file_name)
Imports scene objects from the .DXF format file and attaches them to the specified scene.
scen - scene to attach the imported from the file objects to (the result of calling the sgCScene::GetScene() function)
file_name - full path to the .DXF file
Returns true if the scene was successfully loaded, otherwise - false