CGAL 6.2 - Inscribed Areas: LargestEmptyIsoRectangleTraits_2 Concept Reference

CGAL 6.2 - Inscribed Areas

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LargestEmptyIsoRectangleTraits_2 Concept Reference
Reference Manual » Concepts

## Definition

The concept `LargestEmptyIsoRectangleTraits_2` describes the set of requirements to be fulfilled by any class used to instantiate the template parameter of the class `Largest_empty_iso_rectangle_2<T>`. This concept provides the types of the geometric primitives used in this class and some function object types for the required predicates on those primitives.

Has models
  `CGAL::Cartesian`
  `CGAL::Homogeneous`

See also
  `CGAL::Largest_empty_iso_rectangle_2<Traits>`

## Types
typedef unspecified_type | Point_2
| The point type.
typedef unspecified_type | Iso_rectangle_2
| The iso rectangle type.
typedef unspecified_type | Compare_x_2
| Predicate object.
typedef unspecified_type | Compare_y_2
| Predicate object.
typedef unspecified_type | Less_x_2
| Predicate object.
typedef unspecified_type | Less_y_2
| Predicate object.

## Creation
Only a default constructor, copy constructor and an assignment operator are required. Note that further constructors can be provided.
| LargestEmptyIsoRectangleTraits_2 ()
| Default constructor.
| LargestEmptyIsoRectangleTraits_2 (LargestEmptyIsoRectangleTraits_2)
| Copy constructor.
LargestEmptyIsoRectangleTraits_2 | operator= (LargestEmptyIsoRectangleTraits_2 gtr)
| Assignment operator.

## Predicate functions
The following functions give access to the predicate and constructor objects.
Compare_x_2 | compare_x_2_object ()
Compare_y_2 | compare_y_2_object ()
Less_x_2 | less_x_2_object ()
Less_y_2 | less_y_2_object ()

## Member Typedef Documentation

## ◆ Compare_x_2

typedef unspecified_type LargestEmptyIsoRectangleTraits_2::Compare_x_2

Predicate object.

Must provide the operator `Comparison_result operator()(Point_2 p, Point_2 q)` which returns `SMALLER, EQUAL` or `LARGER` according to the \( x\)-ordering of points `p` and `q`.

## ◆ Compare_y_2

typedef unspecified_type LargestEmptyIsoRectangleTraits_2::Compare_y_2

Predicate object.

Must provide the operator `Comparison_result operator()(Point_2 p, Point_2 q)` which returns `SMALLER, EQUAL` or `LARGER` according to the \( y\)-ordering of points `p` and `q`.

## ◆ Less_x_2

typedef unspecified_type LargestEmptyIsoRectangleTraits_2::Less_x_2

Predicate object.

Must provide the operator `bool operator()(Point_2 p, Point_2 q)` which returns whether `p` is less than `q` according to their \( x\)-ordering.

## ◆ Less_y_2

typedef unspecified_type LargestEmptyIsoRectangleTraits_2::Less_y_2

Predicate object.

Must provide the operator `bool operator()(Point_2 p, Point_2 q)` which returns whether `p` is less than `q` according to their \( y\)-ordering.