CGAL 5.3 - 2D and 3D Linear Geometry Kernel
Kernel::ConstructOppositeTriangle_2 Concept Reference

## Definition

Refines:
AdaptableFunctor (with one argument)
See also
CGAL::Triangle_2<Kernel>

## Operations

A model of this concept must provide:

Kernel::Triangle_2 operator() (const Kernel::Triangle_2 &t)
returns the triangle with opposite orientation to t (this flips the positive and the negative side, but not bounded and unbounded side).