This directory contains mex functions that must be compiled before they can be called from matlab.
Typically the C++ code for function myfunc will be in a file called
myfunc.cpp and accompanied by a blank file myfunc.m, which simply contains
comments explaining call usage of the function (so that help myfunc returns
something useful).
I've abandoned trying to build a "pure-matlab" build system. I now use cmake. So the build routine is (from the bash command line):
mkdir build
cd build
cmake ..
make
This will output the mex functions in this (mex/) directory.
Nearly all of the functions depend on stl, Eigen and libigl. Beyond that some
may depend on CGAL, Embree, and El Topo. The cmake .. command above should
take care of downloading these dependencies into gptoolbox/mex/external/.