\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL 4.5 - 2D Arrangements
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ArrangementLandmarkTraits_2 Concept Reference
Traits Concepts

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.
 

Functor Types

typedef unspecified_type Approximate_2
 models the concept ArrTraits::Approximate_2.
 
typedef unspecified_type Construct_x_monotone_curve_2
 models the concept ArrTraits::ConstructXMonotoneCurve_2.
 

Accessing Functor Objects

Approximate_2 approximate_2_object () const
 
Construct_x_monotone_curve_2 construct_x_monotone_curve_2_object () const