InitialPointsGenerator_3 Concept Reference

Definition

The function object concept InitialPointsGenerator_3 is designed to construct a set of initial points on the surface of the domain.

Has models

CGAL::Construct_initial_points_labeled_image<C3t3, Mesh_domain>

CGAL::Construct_initial_points_gray_image<C3t3, Mesh_domain>

Types (exposition only)
These types are used in the concept's description but are not part of the concept itself.
typedef unspecified_type	MeshDomain
	Mesh domain type to be meshed, model of MeshDomain_3
typedef unspecified_type	C3t3
	Type of the output mesh complex, model of MeshComplex_3InTriangulation_3

Operations
Initial points generators are designed to output, via their operators operator(OutputIterator), a set of surface points for mesh initialization to an output iterator.
template<typename OutputIterator >
OutputIterator	operator() (OutputIterator pts, const int n=0)
	outputs a set of surface points for mesh initialization.

Member Function Documentation

operator()()

template<typename OutputIterator >

OutputIterator InitialPointsGenerator_3::operator()	(	OutputIterator	pts,
		const int	n = 0
	)

outputs a set of surface points for mesh initialization.

If, after insertion of these points, the triangulation is still not 3D, or does not have any facets in the restricted Delaunay triangulation, then more points will be added automatically by the mesh generator.

Template Parameters

OutputIterator

model of OutputIterator whose value type is a tuple-like object made of 3 elements: a C3t3::Triangulation::Point : the point p, an int : the minimal dimension of the subcomplexes on which p lies, a MeshDomain_3::Index : the index of the corresponding subcomplex.

Parameters

pts	an output iterator for the points
n	a lower bound on the number of points to construct for initialization. When n is set to its default value 0, the functor must provide enough points to initialize the mesh generation process, i.e., to have a 3D triangulation with at least one facet in the restricted Delaunay triangulation. If these conditions are not satisfied, then more points will be added automatically by the mesh generator.