[juliohm]

You probably need to re-scan the book. Meshes.jl is the submodule of the project entirely written in Julia with geometric processing algorithms.

[nraynaud]

I have worked with it. It was just stating, very little useful code in it. Going back to the source code, I see they added a bit more. A quick look around suggest that only one algorithm uses an indexing structure. Clipping seems limited between a convex polygon and a concave one.