ScreenBox.h

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#ifndef OSMSCOUT_UTIL_SCREENBOX_H
#define OSMSCOUT_UTIL_SCREENBOX_H
 
/*
  This source is part of the libosmscout library
  Copyright (C) 2022  Tim Teulings
 
  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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/
 
#include <osmscout/lib/CoreImportExport.h>
 
#include <osmscout/Pixel.h>
 
namespace osmscout {

  class OSMSCOUT_API ScreenBox CLASS_FINAL
  {
  private:
    Vertex2D minCoord=Vertex2D(0.0,0.0);
    Vertex2D maxCoord=Vertex2D(0.0,0.0);
 
  public:
    static const ScreenBox EMPTY;
    ScreenBox() = default;

    ScreenBox(const ScreenBox& other) = default;

    ScreenBox(ScreenBox&& other) = default;

    ScreenBox(const Vertex2D& coordA,
              const Vertex2D& coordB);

    ScreenBox& operator=(const ScreenBox& other) = default;

    ScreenBox& operator=(ScreenBox&& other) = default;

    bool operator==(const ScreenBox& other) const;
 
    [[nodiscard]] double GetMinX() const
    {
      return minCoord.GetX();
    }
 
    [[nodiscard]] double GetMinY() const
    {
      return minCoord.GetY();
    }
 
    [[nodiscard]] double GetMaxX() const
    {
      return maxCoord.GetX();
    }
 
    [[nodiscard]] double GetMaxY() const
    {
      return maxCoord.GetY();
    }

    [[nodiscard]] double GetWidth() const
    {
      return maxCoord.GetX()-minCoord.GetX();
    }

    [[nodiscard]] double GetHeight() const
    {
      return maxCoord.GetY()-minCoord.GetY();
    }

    [[nodiscard]] double GetSize() const
    {
      return GetWidth()*GetHeight();
    }

    [[nodiscard]] bool IsEmpty() const
    {
      return GetSize()==0.0;
    }

    [[nodiscard]] Vertex2D GetCenter() const
    {
      return {(minCoord.GetX()+maxCoord.GetX())/2,
              (minCoord.GetY()+maxCoord.GetY())/2};
    }
 
    [[nodiscard]] bool Intersects(const ScreenBox& other) const;
    [[nodiscard]] bool Intersects(const ScreenBox& other,
                                  bool openInterval) const;

    [[nodiscard]] ScreenBox Resize(double offset) const;
    [[nodiscard]] ScreenBox Merge(const ScreenBox& other) const;
  };
}
 
#endif