CGAL 6.1.2 - 2D and 3D Linear Geometry Kernel

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Kernel::ConstructDirection_2 Concept Reference
Reference Manual » Concepts » Kernel Function Object Concepts

## Definition

Refines
  `AdaptableUnaryFunction`

See also
  `CGAL::Direction_2<Kernel>`

## Operations
A model of this concept must provide:
Kernel::Direction_2 | operator() (const Kernel::Vector_2 &v)
| introduces the direction of vector `v`.
Kernel::Direction_2 | operator() (const Kernel::Line_2 &l)
| introduces the direction of line `l`.
Kernel::Direction_2 | operator() (const Kernel::Ray_2 &r)
| introduces the direction of ray `r`.
Kernel::Direction_2 | operator() (const Kernel::Segment_2 &s)
| introduces the direction of segment `s`.