This is just a mex wrapper around a C++ obj file reader. I found that all obj readers on the Mathworks website were really slow, so I wrapped a fast C++ version.
Run "compile_mex.m".
Run "test_mex.m" for a usage demo. obj_read(filename) returns a struct with the loaded channels from the obj file (faces, vertices, normals, etc).
Where possible this project follows the Google C++ style conventions:
http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml