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 haven't invested too much time trying to be sure these functions compile anywhere. They should. Why not? All compilers are perfectly standard, right?

I've tried to gather the compilation of all these mex functions into a script. To attempt to compile all mex functions in this directory, issue:

compile_gptoolbox_mex

I'll try to keep this up to date. We'll see how that goes.

These mex functions do not depend on each other, so if you just need a certain function, you can compile it alone directly:

compile_gptoolbox_mex

But don't hit OK, hit CTRL+C instead. Now the paths are set as needed. Copy the relevant chunk from compile_gptoolbox_mex.m and compile the individual mex file. For example,

mex( ...
  MEXOPTS{:}, MSSE42, STDCPP11, ...
  LIBIGL_BASE{:},EIGEN_INC, ...
  LIBIGL_LIBCGAL, ...
  CGAL_INC,CGAL_LIB{:},CGAL_FLAGS, ...
  BOOST_INC,BOOST_LIB{:}, ...
  'signed_distance_isosurface.cpp');

Some of these functions depend on:

• c++11
  • VS2012 or newer (windows users only)
• Eigen
• libigl
• Embree
• Cork
• CGAL
  • boost
• Mac OS X Foundation and AppKit frameworks

Libigl is by default a header only library. You do not need to compile it to use it (though you do need to compile and link to any dependencies, e.g. CGAL).

If you see a mex command linking to libigl libraries (e.g. -L/usr/local/igl/libigl -ligl, etc) you may safely remove these, so long as you also remove any definition of the static library flag: -DIGL_STATIC_LIBRARY.

OpenMP is still not well supported by clang. I've configured my mexopts.sh to use gcc4.7 (installed via macports) and enabled openmp via the -fopenmp flag. Some of these mex files will utilize this if enabled.

Currently, none of these mex functions are developed or even known to be compilable on Windows. If you succeed, drop me a line. If you fail, I'll try to help, but I do not have access to a windows machine.