bintree/Key.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************/
 
#ifndef GEOS_IDX_BINTREE_KEY_H
#define GEOS_IDX_BINTREE_KEY_H
 
#include <geos/export.h>
 
// Forward declarations
namespace geos {
        namespace index { 
                namespace bintree { 
                        class Interval;
                }
        }
}
 
namespace geos {
namespace index { // geos::index
namespace bintree { // geos::index::bintree

class GEOS_DLL Key {
 
public:
 
        static int computeLevel(Interval *newInterval);
 
        Key(Interval *newInterval);
 
        ~Key();
 
        double getPoint();
 
        int getLevel();
 
        Interval* getInterval();
 
        void computeKey(Interval *itemInterval);
 
private:
 
        // the fields which make up the key
        double pt;
        int level;
 
        // auxiliary data which is derived from the key for use in computation
        Interval *interval;
 
        void computeInterval(int level, Interval *itemInterval);
};
 
} // namespace geos::index::bintree
} // namespace geos::index
} // namespace geos
 
#endif // GEOS_IDX_BINTREE_KEY_H