dpoint2d.hh

// Copyright (C) 2001, 2002, 2003, 2004  EPITA Research and Development Laboratory
//
// This file is part of the Olena Library.  This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License version 2 as published by the
// Free Software Foundation.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
//
// As a special exception, you may use this file as part of a free
// software library without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License.  This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.

#ifndef OLENA_CORE_DPOINT2D_HH
# define OLENA_CORE_DPOINT2D_HH

# include <oln/core/coord.hh>
# include <oln/core/abstract/dpoint.hh>
# include <iostream>

namespace oln {

  // fwd decl
  class point2d;
  class dpoint2d;


  
  template<>
  struct dpoint_traits<dpoint2d>: public
  dpoint_traits<abstract::dpoint<dpoint2d> >
  {
    enum { dim = 2 };
    typedef point2d point_type;
  };

  class dpoint2d : public abstract::dpoint< dpoint2d >
  {

  public:

    typedef abstract::dpoint< dpoint2d > super_type;

    friend class abstract::dpoint< dpoint2d >;

    dpoint2d();


    dpoint2d(coord row, coord col);

    explicit dpoint2d(const point2d& p);


    coord 
    row() const;
    
    
    coord& 
    row();
    
    
    coord 
    col() const;


    coord& 
    col();

    static std::string 
    name() 
    { 
      return "dpoint2d"; 
    }

  protected:

    
    dpoint2d 
    plus_dp(const dpoint2d& dp) const;

    dpoint2d 
    minus() const;

    
    dpoint2d 
    minus_dp(const dpoint2d& dp) const;

    dpoint2d& 
    plus_assign_dp(const dpoint2d& dp);

    dpoint2d& 
    minus_assign_dp(const dpoint2d& dp);

  };
  
  namespace internal
  {
    template<>
    struct default_less<dpoint2d> :
      public default_less<dpoint2d::super_type>
    {};
  } // end of internal

} // end of oln


inline std::ostream&
operator<<(std::ostream& o, const oln::dpoint2d& dp);

# include <oln/core/dpoint2d.hxx>

#endif // OLENA_CORE_DPOINT2D_HH

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