coord_sys.h

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//            Copyright (C) 2004-2007 by The Allacrost Project
//                         All Rights Reserved
//
// This code is licensed under the GNU GPL version 2. It is free software 
// and you may modify it and/or redistribute it under the terms of this license.
// See http://www.gnu.org/copyleft/gpl.html for details.

#ifndef __COORD_SYS_HEADER__
#define __COORD_SYS_HEADER__

#include "defs.h"
#include "utils.h"

namespace hoa_video {

class CoordSys {
public:
  CoordSys()
    {}

  CoordSys(float left, float right, float bottom, float top)
    {
      _left = left; _right = right; _bottom = bottom; _top = top;
      if (_right > _left) _horizontal_direction = 1.0f; else _horizontal_direction = -1.0f;
      if (_top > _bottom) _vertical_direction = 1.0f; else _vertical_direction = -1.0f;
    }


  float GetVerticalDirection() const
    { return _vertical_direction; }

  float GetHorizontalDirection() const
    { return _horizontal_direction; }

  float GetLeft() const
    { return _left; }

  float GetRight() const
    { return _right; }

  float GetBottom() const
    { return _bottom; }

  float GetTop() const
    { return _top; }

private:
  float _vertical_direction;

  float _horizontal_direction;

  float _left, _right, _bottom, _top;
}; // class CoordSys

} // namespace hoa_video

#endif // __COORD_SYS_HEADER__

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