CGAL::Construct_initial_points_labeled_image< C3t3, MeshDomain > Struct Template Reference

#include <CGAL/Mesh_3/Construct_initial_points_labeled_image.h>

Definition

template<typename C3t3, typename MeshDomain>
struct CGAL::Construct_initial_points_labeled_image< C3t3, MeshDomain >

Functor for generating initial points in labeled images.

This functor is a model of the InitialPointsGenerator concept, and can be passed as a parameter to CGAL::make_mesh_3 using the CGAL::parameters::initial_points_generator() parameter function.

On images that contain multiple non-connected components, this functor scans the complete image and outputs points to initialize each component.

Template Parameters

C3t3	model of MeshComplex_3InTriangulation_3
MeshDomain	model of MeshDomain_3

Is model of

InitialPointsGenerator

See also

CGAL::parameters::initial_points_generator()

CGAL::make_mesh_3()

CGAL::Construct_initial_points_gray_image

Examples

Mesh_3/mesh_3D_image_with_image_initialization.cpp.

Public Member Functions
template<typename OutputIterator >
OutputIterator	operator() (OutputIterator pts, int n=20) const
	constructs at least n initial points, by scanning the image and collecting points in each object in the image, even if they are non-connected components.
template<typename OutputIterator , typename TransformOperator >
OutputIterator	operator() (OutputIterator pts, TransformOperator transform, int n=20) const
	Same as above, but a TransformOperator that transforms values of the image is used.

Member Function Documentation

operator()() [1/2]

template<typename C3t3 , typename MeshDomain >

template<typename OutputIterator >

OutputIterator CGAL::Construct_initial_points_labeled_image< C3t3, MeshDomain >::operator()	(	OutputIterator	pts,
		int	n = 20
	)		const

constructs at least n initial points, by scanning the image and collecting points in each object in the image, even if they are non-connected components.

This ensures that each component will be initialized.

Template Parameters

OutputIterator

model of OutputIterator for tuple-like objects containing a Weighted_point_3 for the point an int for the minimal dimension of the subcomplexes on which the point lies a MeshDomain::Index for the corresponding subcomplex index

operator()() [2/2]

template<typename C3t3 , typename MeshDomain >

template<typename OutputIterator , typename TransformOperator >

OutputIterator CGAL::Construct_initial_points_labeled_image< C3t3, MeshDomain >::operator()	(	OutputIterator	pts,
		TransformOperator	transform,
		int	n = 20
	)		const

Same as above, but a TransformOperator that transforms values of the image is used.

Template Parameters

OutputIterator	model of OutputIterator for tuple-like objects containing a Weighted_point_3 for the point an int for the minimal dimension of the subcomplexes on which the point lies a MeshDomain::Index for the corresponding subcomplex index
MeshDomain	model of MeshDomain_3
TransformOperator	functor that transforms values of the image. It must provide the following type: result_type: a type that supports the '==' operator and the following operator: result_type operator()(Word v) with Word the type of the image values.
C3t3	model of MeshComplex_3InTriangulation_3

The following lines show how to insert initial points in the c3t3 object. [insert initial points]

[insert initial points]