/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2005-03-27
 * Description : Threaded image filter to fix hot pixels
 *
 * Copyright (C) 2005-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2005-2006 by Unai Garro <ugarro at users dot sourceforge dot net>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program 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.
 *
 * ============================================================ */

#ifndef HOTPIXEL_H
#define HOTPIXEL_H

// TQt includes.

#include <tqrect.h>

namespace DigikamHotPixelsImagesPlugin
{

class HotPixel
{

public:

    TQRect rect;
    int luminosity;
    int y() const     {return rect.y();     };
    int x() const     {return rect.x();     };
    int width()const  {return rect.width(); };
    int height()const {return rect.height();};

    bool operator==(const HotPixel p) const
    {
        //we can say they're same hotpixel spot if they
        //touch(next to) each other horizontally or vertically, not diagonal corners
        //return (rect.intersects(p.rect));
        return (rect != p.rect) && (x() + width() >= p.x() && x() <= p.x() + p.width()
                && y() + height() >= p.y() && y() <= p.y() + p.height())
                && !diagonal(rect, p.rect);
    }

private:

    bool diagonal(TQRect r1,TQRect r2) const
    {
        //locate next-to positions

        bool top    = r1.y() + height()-1 == r2.y()-1; //r1 is on the top of r2
        bool left   = r1.x() + width()-1  == r2.x()-1; //r1 is on the left of r2
        bool right  = r1.x() == r2.x() + r2.width();
        bool bottom = r1.y() == r2.y() + r2.height();

        return ((top && left) || (top && right) || (bottom && left) || (bottom && right));
    }
};

}  // NameSpace DigikamHotPixelsImagesPlugin

#endif  // HOTPIXEL_H
