The Skin_surface_3<SkinSurfaceTraits_3> is the main class in the Skin_surface_3 package. It is a model of the concept SkinSurface_3.
The template argument is required to be a model of the concept SkinSurfaceTraits_3, which means that it provides predicates to construct a regular triangulation of the weighted points and for point location in the mixed complex.
#include <CGAL/Skin_surface_3.h>