I have shown some practical examples of this here: http://jbdynamo.blogspot.no/2014/11/last-post-about-topos-and-piles-forever.html
I’ve also got a package out on the package manager called Topography.Surface which does exactly what Vikrams do. I guess I’ll deprecate it, since I’m very much for a condensation of packages.
Mind you however that the reason Konrad is going via grasshopper is that he can then skip the surface conversion of the mesh which is a very heavy operation.