ArrangementLandmarkTraits_2 Concept Reference

Definition

The concept ArrangementLandmarkTraits_2 refines the general traits concept by adding operations needed for the landmarks point-location strategy, namely - approximating points and connecting points with a simple \( x\)-monotone curve.

A model of this concept must define the Approximate_number_type, which is used to approximate the coordinates of Point_2 instances. It is recommended to define the approximated number type as the built-in double type.

Refines:

ArrangementTraits_2

Has Models:

CGAL::Arr_non_caching_segment_traits_2<Kernel>

CGAL::Arr_segment_traits_2<Kernel>

CGAL::Arr_linear_traits_2<Kernel>

CGAL::Arr_polyline_traits_2<SegmentTraits>

CGAL::Arr_conic_traits_2<RatKernel,AlgKernel,NtTraits>

See also

ArrangementTraits_2

Types
typedef unspecified_type	Approximate_number_type
	the number type used to approximate point coordinates. More...

Functor Types
typedef unspecified_type	Approximate_2
	models the concept ArrTraits::Approximate_2. More...
typedef unspecified_type	Construct_x_monotone_curve_2
	models the concept ArrTraits::ConstructXMonotoneCurve_2. More...

Accessing Functor Objects
Approximate_2	approximate_2_object () const
Construct_x_monotone_curve_2	construct_x_monotone_curve_2_object () const

Member Typedef Documentation

typedef unspecified_type ArrangementLandmarkTraits_2::Approximate_2

models the concept ArrTraits::Approximate_2.

typedef unspecified_type ArrangementLandmarkTraits_2::Approximate_number_type

the number type used to approximate point coordinates.

typedef unspecified_type ArrangementLandmarkTraits_2::Construct_x_monotone_curve_2

models the concept ArrTraits::ConstructXMonotoneCurve_2.

Member Function Documentation

Approximate_2 ArrangementLandmarkTraits_2::approximate_2_object

(

)

const

Construct_x_monotone_curve_2 ArrangementLandmarkTraits_2::construct_x_monotone_curve_2_object

(

)

const