CGAL 4.5 - 2D Arrangements
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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.
 

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