CGAL 5.6.3 - 2D Arrangements

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ArrangementHorizontalSideTraits_2 Concept Reference
2D Arrangement Reference » Concepts » Geometry Traits Concepts

## Definition

`ArrangementHorizontalSideTraits_2` is an abstract concept. It generalizes all concepts that handle curves that either reach or approach either the bottom or top sizeds of the boundary of the parameter space. (An "abstract" concept is a concept that is useless on its own.) Only a combination of this concept and one or more concepts that handle curves that either reach or approach the remaining boundary sides (that is, left and right) are purposeful, and can have models.

Refines
  `ArrangementBasicTraits_2`

Has Models:

  `CGAL::Arr_linear_traits_2<Kernel>`

  `CGAL::Arr_rational_function_traits_2<AlgebraicKernel_d_1>`

  `CGAL::Arr_algebraic_segment_traits_2<Coefficient>`

  `CGAL::Arr_geodesic_arc_on_sphere_traits_2<Kernel, X, Y>`

See also
  `ArrangementVerticalSideTraits_2`

## Functor Types
typedef unspecified_type | Parameter_space_in_y_2
| models the concept `ArrTraits::ParameterSpaceInY_2`.
typedef unspecified_type | Compare_x_on_boundary_2
| models the concept `ArrTraits::CompareXOnBoundaryOfCurveEnd_2`.
typedef unspecified_type | Compare_x_near_boundary_2
| models the concept `ArrTraits::CompareXNearBoundary_2`.

## Accessing Functor Objects
Parameter_space_in_y_2 | parameter_space_in_y_2_object () const
Compare_x_on_boundary_2 | compare_x_on_boundary_2_object () const
Compare_x_near_boundary_2 | compare_x_near_boundary_2_object () const