CGAL 4.7 - 2D and 3D Linear Geometry Kernel
Kernel::CounterclockwiseInBetween_2 Concept Reference

## Definition

Refines:
AdaptableFunctor (with three arguments)
CGAL::Direction_2<Kernel>

## Operations

A model of this concept must provide:

bool operator() (const Kernel::Direction_2 &d, const Kernel::Direction_2 &d1, const Kernel::Direction_2 &d2)
returns true iff d is not equal to d1, and while rotating counterclockwise starting at d1, d is reached strictly before d2 is reached. More...

## Member Function Documentation

 bool Kernel::CounterclockwiseInBetween_2::operator() ( const Kernel::Direction_2 & d, const Kernel::Direction_2 & d1, const Kernel::Direction_2 & d2 )

returns true iff d is not equal to d1, and while rotating counterclockwise starting at d1, d is reached strictly before d2 is reached.

Note that true is returned if d1 == d2, unless also d == d1.