bintree/Root.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_ROOT_H
#define GEOS_IDX_BINTREE_ROOT_H
 
#include <geos/export.h>
#include <geos/index/bintree/NodeBase.h> // for inheritance
 
// Forward declarations
namespace geos {
        namespace index { 
                namespace bintree { 
                        class Interval;
                        class Node;
                }
        }
}
 
namespace geos {
namespace index { // geos::index
namespace bintree { // geos::index::bintree

class GEOS_DLL Root: public NodeBase {
 
private:
 
        // the singleton root node is centred at the origin.
        static double origin;
 
        void insertContained(Node *tree,
                        Interval *itemInterval,
                        void* item);
 
public:
 
        Root() {}
 
        ~Root() {}

        void insert(Interval *itemInterval, void* item);
 
protected:
 
        bool isSearchMatch(Interval* /*interval*/) { return true; }
};
 
} // namespace geos::index::bintree
} // namespace geos::index
} // namespace geos
 
#endif // GEOS_IDX_BINTREE_ROOT_H