
 CGAL::natural_neighbor_coordinates_2() 
 The functions natural_neighbor_coordinates_2() compute natural neighbor coordinates, also called Sibson's coordinates, for 2D points provided a twodimensional triangulation and a query point in the convex hull of the vertices of the triangulation.


 CGAL::regular_neighbor_coordinates_2() 
 The functions regular_neighbor_coordinates_2() compute natural neighbor coordinates, also called Sibson's coordinates, for weighted 2D points provided a twodimensional regular triangulation and a (weighted) query point inside the convex hull of the vertices of the triangulation.

