line_2d.hpp

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/*
  CLAW - a C++ Library Absolutely Wonderful
 
  CLAW is a free library without any particular aim but being useful to
  anyone.
 
  Copyright (C) 2005-2011 Julien Jorge
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  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
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
  contact: julien.jorge@stuff-o-matic.com
*/
#ifndef __CLAW_LINE_2D_HPP__
#define __CLAW_LINE_2D_HPP__
 
#include <claw/coordinate_2d.hpp>
#include <claw/vector_2d.hpp>
 
namespace claw
{
  namespace math
  {
    template <class T>
    class line_2d
    {
    public:
      typedef T value_type;

      typedef line_2d<value_type> self_type;

      typedef coordinate_2d<value_type> point_type;

      typedef vector_2d<value_type> direction_type;
 
    public:
      line_2d();
      template <class U>
      line_2d(const line_2d<U>& that);
      line_2d(const point_type& _origin, const direction_type& _direction);
      line_2d(const value_type& ox, const value_type& oy, const value_type& dx,
              const value_type& dy);
 
      bool parallel(const self_type& that) const;
      bool orthogonal(const self_type& that) const;
      point_type intersection(const self_type& that) const;
 
      value_type y_value(const value_type& x) const;
 
    public:
      point_type origin;

      direction_type direction;
 
    }; // class point_2d
  }
}
 
#include <claw/line_2d.tpp>
 
#endif // __CLAW_LINE_2D_HPP__