mirror of https://github.com/CGAL/cgal
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
// Copyright (c) 1998
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Michael Hoffmann <hoffmann@inf.ethz.ch>
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#ifndef CGAL_RANDOM_CONVEX_SET_TRAITS_2_H
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#define CGAL_RANDOM_CONVEX_SET_TRAITS_2_H 1
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#include <CGAL/Point_2.h>
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#include <CGAL/number_utils.h>
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namespace CGAL {
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template < class Kernel >
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struct Random_convex_set_traits_2 : public Kernel {
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typedef typename Kernel::Point_2 Point_2;
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typedef typename Kernel::Direction_2 Direction_2;
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typedef typename Kernel::FT FT;
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Random_convex_set_traits_2() : _origin( ORIGIN)
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{}
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const Point_2 &
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origin() const
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{ return _origin; }
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struct Max_coordinate
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: public std::unary_function< Point_2, FT >
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{
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FT
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operator()( const Point_2& p) const
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{
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return (std::max)( CGAL_NTS abs( p.x()), CGAL_NTS abs( p.y()));
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}
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};
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struct Sum
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: public std::binary_function< Point_2, Point_2, Point_2 >
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{
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Point_2
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operator()( const Point_2& p, const Point_2& q) const
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{ return p + (q - ORIGIN); }
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};
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struct Scale
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: public std::binary_function< Point_2, FT, Point_2 >
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{
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Point_2
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operator()( const Point_2& p, const FT& k) const
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{ return ORIGIN + (p - ORIGIN) * k; }
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};
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struct Angle_less
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: public std::binary_function< Point_2, Point_2, bool >
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{
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bool
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operator()( const Point_2& p, const Point_2& q) const
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{
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return Direction_2( p - ORIGIN) < Direction_2( q - ORIGIN);
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}
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};
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private:
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Point_2 _origin;
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};
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template <class Kernel>
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struct Random_convex_set_traits : public Random_convex_set_traits_2<Kernel>
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{};
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template < class OutputIterator, class Point_generator >
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inline
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OutputIterator
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random_convex_set_2( std::size_t n,
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OutputIterator o,
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const Point_generator& pg)
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{
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typedef typename Point_generator::value_type Point_2;
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return CGAL_random_convex_set_2(n, o, pg, reinterpret_cast<Point_2*>(0));
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}
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template < class OutputIterator, class Point_generator, class R >
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inline
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OutputIterator
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CGAL_random_convex_set_2( std::size_t n,
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OutputIterator o,
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const Point_generator& pg,
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Point_2< R >*)
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{
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return random_convex_set_2(
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n, o, pg, Random_convex_set_traits_2< R >());
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}
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} //namespace CGAL
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#endif // ! (CGAL_RANDOM_CONVEX_SET_TRAITS_2_H)
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