Fix for the mesh, to answer to you question:

while compiling testMesh.cpp, there is a conversion error in Mesh.ih. The problem is that the Mesh vertex have integer component (is that always the case ?) and those components are here scaled by a double thus leading to an invalid conversion (ping @kerautret).

Mesh do not have necessary an integer point (also used to display std mesh in various viewer of DGtalTools). I corrected the scale which was indeed not correct and I force to be of the same type than the point component. I fix the test and typo in the doc (sorry my PR contains also other fix but I/you can cherrypick if you want let me know). By the way many thanks for the details and listing ;)