\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL - Halfedge Data Structures
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CGAL::HalfedgeDS_list< Traits, HalfedgeDSItems, Alloc > Class Template Reference

#include <CGAL/HalfedgeDS_list.h>

Definition

The class HalfedgeDS_list is a model for the HalfedgeDS concept.

HalfedgeDS_list is a list-based representation with bidirectional iterators that supports removal.

Is Model Of:
HalfedgeDS<Traits,Items,Alloc>
See Also
CGAL::HalfedgeDS_default
CGAL::HalfedgeDS_vector
HalfedgeDSItems
CGAL::Polyhedron_3<Traits>
CGAL::HalfedgeDS_items_decorator<HDS>
CGAL::HalfedgeDS_decorator<HDS>
CGAL::HalfedgeDS_const_decorator<HDS>

Implementation

HalfedgeDS_list uses internally the CGAL::In_place_list container class. The copy constructor and the assignment operator need \( O(n)\) time with \( n\) the total number of vertices, halfedges, and faces.

CGAL_ALLOCATOR(int) is used as default argument for the Alloc template parameter.

Examples:
HalfedgeDS/hds_prog_compact2.cpp.

Types

typedef bidirectional_iterator_tag iterator_category
 
typedef CGAL::Tag_true Supports_removal
 

Operations

Besides operations required from the concept HalfedgeDS<Traits,Items,Alloc>, this class supports additionally:

void vertices_splice (Vertex_iterator target, Self &source, Vertex_iterator first, Vertex_iterator last)
 inserts elements in the range [first, last) before position target and removes the elements from source. More...
 
void halfedges_splice (Halfedge_iterator target, Self &source, Halfedge_iterator first, Halfedge_iterator last)
 inserts elements in the range [first, last) before position target and removes the elements from source. More...
 
void faces_splice (Face_iterator target, Self &source, Face_iterator first, Face_iterator last)
 inserts elements in the range [first, last) before position target and removes the elements from source. More...
 

Member Function Documentation

template<typename Traits , typename HalfedgeDSItems , typename Alloc >
void CGAL::HalfedgeDS_list< Traits, HalfedgeDSItems, Alloc >::faces_splice ( Face_iterator  target,
Self &  source,
Face_iterator  first,
Face_iterator  last 
)

inserts elements in the range [first, last) before position target and removes the elements from source.

It takes constant time if &source == &hds; otherwise, it takes linear time in the size of the range.

Precondition
[first, last) is a valid range in source. target is not in the range [first, last).
template<typename Traits , typename HalfedgeDSItems , typename Alloc >
void CGAL::HalfedgeDS_list< Traits, HalfedgeDSItems, Alloc >::halfedges_splice ( Halfedge_iterator  target,
Self &  source,
Halfedge_iterator  first,
Halfedge_iterator  last 
)

inserts elements in the range [first, last) before position target and removes the elements from source.

It takes constant time if &source == &hds; otherwise, it takes linear time in the size of the range.

Precondition
[first, last) is a valid range in source. target is not in the range [first, last).
template<typename Traits , typename HalfedgeDSItems , typename Alloc >
void CGAL::HalfedgeDS_list< Traits, HalfedgeDSItems, Alloc >::vertices_splice ( Vertex_iterator  target,
Self &  source,
Vertex_iterator  first,
Vertex_iterator  last 
)

inserts elements in the range [first, last) before position target and removes the elements from source.

It takes constant time if &source == &hds; otherwise, it takes linear time in the size of the range.

Precondition
[first, last) is a valid range in source. target is not in the range [first, last).