CGAL 6.2 - 2D and 3D Linear Geometry Kernel

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Kernel::IsHorizontal_2 Concept Reference
Reference Manual » Concepts » Kernel Function Object Concepts

## Definition

Refines
  `AdaptableUnaryFunction`

See also
  `CGAL::Line_2<Kernel>`
  `CGAL::Ray_2<Kernel>`
  `CGAL::Segment_2<Kernel>`

## Operations
A model of this concept must provide:
bool | operator() (const Kernel::Line_2 &o)
| returns true iff `o` is horizontal.
bool | operator() (const Kernel::Ray_2 &o)
| returns true iff `o` is horizontal.
bool | operator() (const Kernel::Segment_2 &o)
| returns true iff `o` is horizontal.