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// Copyright (c) 1998
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1.1/Generator/include/CGAL/Random_convex_set_traits_2.h $
// $Id: include/CGAL/Random_convex_set_traits_2.h 08b27d3db14 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Michael Hoffmann <hoffmann@inf.ethz.ch>
#ifndef CGAL_RANDOM_CONVEX_SET_TRAITS_2_H
#define CGAL_RANDOM_CONVEX_SET_TRAITS_2_H 1
#include <CGAL/Point_2.h>
#include <CGAL/number_utils.h>
namespace CGAL {
template < class Kernel >
struct Random_convex_set_traits_2 : public Kernel {
typedef typename Kernel::Point_2 Point_2;
typedef typename Kernel::Direction_2 Direction_2;
typedef typename Kernel::FT FT;
Random_convex_set_traits_2() : _origin( ORIGIN)
{}
const Point_2 &
origin() const
{ return _origin; }
struct Max_coordinate
: public CGAL::cpp98::unary_function< Point_2, FT >
{
FT
operator()( const Point_2& p) const
{
return (std::max)( CGAL_NTS abs( p.x()), CGAL_NTS abs( p.y()));
}
};
struct Sum
: public CGAL::cpp98::binary_function< Point_2, Point_2, Point_2 >
{
Point_2
operator()( const Point_2& p, const Point_2& q) const
{ return p + (q - ORIGIN); }
};
struct Scale
: public CGAL::cpp98::binary_function< Point_2, FT, Point_2 >
{
Point_2
operator()( const Point_2& p, const FT& k) const
{ return ORIGIN + (p - ORIGIN) * k; }
};
struct Angle_less
: public CGAL::cpp98::binary_function< Point_2, Point_2, bool >
{
bool
operator()( const Point_2& p, const Point_2& q) const
{
return Direction_2( p - ORIGIN) < Direction_2( q - ORIGIN);
}
};
private:
Point_2 _origin;
};
template <class Kernel>
struct Random_convex_set_traits : public Random_convex_set_traits_2<Kernel>
{};
template < class OutputIterator, class Point_generator >
inline
OutputIterator
random_convex_set_2( std::size_t n,
OutputIterator o,
const Point_generator& pg)
{
typedef typename Point_generator::value_type Point_2;
return CGAL_random_convex_set_2(n, o, pg, reinterpret_cast<Point_2*>(0));
}
template < class OutputIterator, class Point_generator, class R >
inline
OutputIterator
CGAL_random_convex_set_2( std::size_t n,
OutputIterator o,
const Point_generator& pg,
Point_2< R >*)
{
return random_convex_set_2(
n, o, pg, Random_convex_set_traits_2< R >());
}
} //namespace CGAL
#endif // ! (CGAL_RANDOM_CONVEX_SET_TRAITS_2_H)
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