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// Copyright (c) 1997 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/next/Triangulation_2/include/CGAL/Distance_2.h $
// $Id: Distance_2.h 67117 2012-01-13 18:14:48Z lrineau $
//
//
// Author(s) : Mariette Yvinec
// Sylvain Pion
#ifndef CGAL_DISTANCE_2_H
#define CGAL_DISTANCE_2_H
#include <CGAL/assertions.h>
#include <CGAL/distance_predicates_2.h>
namespace CGAL {
template <class I>
struct Distance_2
{
typedef typename I::Point Point;
Distance_2(const I* = NULL) {}
Distance_2(const Point& p0, const I* = NULL)
{ p[0]=p0; }
Distance_2(const Point& p0, const Point& p1, const I* = NULL)
{ p[0]=p0; p[1]=p1; }
Distance_2(const Point& p0, const Point& p1, const Point& p2,
const I* = NULL)
{ p[0]=p0; p[1]=p1; p[2]=p2; }
void set_point(int i, const Point& q)
{
CGAL_precondition( ((unsigned int) i) < 3 );
p[i] = q;
}
Point get_point(int i) const
{
CGAL_precondition( ((unsigned int) i) < 3 );
return p[i];
}
Comparison_result compare() const
{
return cmp_dist_to_point(p[0], p[1], p[2]);
}
private:
Point p[3];
};
template <class Traits>
struct Distance_xy_3 : public Distance_2<Traits>
{
typedef typename Distance_2<Traits>::Point Point;
public:
Distance_xy_3(const Point& p0,
const Traits* traits = NULL)
: Distance_2<Traits>(p0, traits) { }
Distance_xy_3(const Point& p0,
const Point& p1,
const Traits* traits = NULL)
: Distance_2<Traits>(p0,p1,traits) { }
Distance_xy_3(const Point& p0,
const Point& p1,
const Point& p2,
const Traits* traits = NULL)
: Distance_2<Traits>(p0,p1,p2,traits) { }
Comparison_result
compare() const
{
Point p0 = get_point(0);
Point p1 = get_point(1);
Point p2 = get_point(2);
return cmp_dist_to_pointC2(x(p0),y(p0),x(p1),y(p1),x(p2),y(p2));
}
};
} //namespace CGAL
#endif // CGAL_DISTANCE_2_H
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