CGAL 5.3 - 2D Visibility: Is Model Relationships

CGAL 5.3 - 2D Visibility

Class CGAL::Rotational_sweep_visibility_2< Arrangement_2_, RegularizationCategory >: Visibility_2
Class CGAL::Simple_polygon_visibility_2< Arrangement_2_, RegularizationCategory >: Visibility_2
Class CGAL::Triangular_expansion_visibility_2< Arrangement_2_, RegularizationCategory >: Visibility_2