\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - Combinatorial Maps

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CellAttribute Concept Reference
Concepts

## Definition

The concept `CellAttribute` represents a non void attribute associated with a cell of a combinatorial map. It can keep a handle to one dart of its associated cell, and can contain any information.

Has Models:
  CGAL::Cell_attribute<CMap,Info_,Tag,OnMerge,OnSplit>

See Also
  `CombinatorialMap`
  `CombinatorialMapItems`

## Types
typedef unspecified_type | Dart_handle
| Dart handle type.
typedef unspecified_type | Dart_const_handle
| Dart const handle type.
typedef unspecified_type | Info
| Type of the information contained in the attribute. More...
typedef unspecified_type | Supports_cell_dart
| Equals to Tag_true to enable the storage of a `Dart_handle` of the associated cell, Tag_false otherwise.
typedef unspecified_type | On_merge
| Functor called before merging two attributes. More...
typedef unspecified_type | On_split
| Functor called after an attribute was split in two. More...

## Creation
| CellAttribute ()
| Cell_attribute (const Info &info)
| Constructor initializing the information of this attribute by the copy constructor Info(info). More...

## Access Member Functions
Dart_handle | dart ()
| Returns one dart of the cell associated to this attribute. More...
Dart_const_handle | dart () const
| Returns one dart of the cell associated to this attribute, when it is const. More...
void | set_dart (Dart_handle ahandle)
| Sets the dart of the cell associated to this attribute to `ahandle`, if Supports_cell_dart is equal to Tag_true. More...
Info & | info ()
| Returns the information of this attribute. More...
const Info & | info () const
| Returns the information of this attribute, when it is const. More...

## Member Typedef Documentation

typedef unspecified_type CellAttribute::Info

Type of the information contained in the attribute.

If `void`, the cell attribute does not have any information.

typedef unspecified_type CellAttribute::On_merge

Functor called before merging two attributes.

Must be a model of the Binary Function concept having two references to a model of `CellAttribute` as type of both arguments and `void` as return type.

typedef unspecified_type CellAttribute::On_split

Functor called after an attribute was split in two.

Must be a model of the Binary Function concept having two references to a model of `CellAttribute` as type of both arguments and `void` as return type.

## Member Function Documentation

CellAttribute::Cell_attribute | ( | const Info & | info) |  |

Constructor initializing the information of this attribute by the copy constructor Info(info).

Defined only if Info is different from `void`.

Dart_handle CellAttribute::dart | ( | ) |  |

Returns one dart of the cell associated to this attribute.

`NULL` if Supports_cell_dart is equal to Tag_false.

Dart_const_handle CellAttribute::dart | ( | ) |  | const

Returns one dart of the cell associated to this attribute, when it is const.

`NULL` if Supports_cell_dart is equal to Tag_false.

Info& CellAttribute::info | ( | ) |  |

Returns the information of this attribute.

Defined only if Info is different from `void`.

const Info& CellAttribute::info | ( | ) |  | const

Returns the information of this attribute, when it is const.

Defined only if Info is different from `void`.

void CellAttribute::set_dart | ( | Dart_handle | ahandle) |  |

Sets the dart of the cell associated to this attribute to `ahandle`, if Supports_cell_dart is equal to Tag_true.

Otherwise, this method does nothing.

Precondition
  `ahandle` belongs to the cell associated to this attribute.