opengl2?

[ib00]

Some examples are using opengl2 directory that appears to be missing.
For example:
#include <igl/opengl2/draw_skeleton_3d.h>
#include <igl/opengl2/draw_skeleton_vector_graphics.h>

Any suggestions on where to get these files?

[alecjacobson]

These are from an old old version of libigl. So you probably need to dig into the libigl history to find them. (I'm guessing > 2 years ago)

[ib00]

Thanks. I found them in the libigl-legacy repository.