Quadtree.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.
 *
 **********************************************************************
 *
 * Last port: index/quadtree/Quadtree.java rev. 1.16 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_IDX_QUADTREE_QUADTREE_H
#define GEOS_IDX_QUADTREE_QUADTREE_H
 
#include <geos/export.h>
#include <geos/index/SpatialIndex.h> // for inheritance
#include <geos/index/quadtree/Root.h> // for composition
 
#include <vector>
#include <string>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace geom {
                class Envelope;
        }
        namespace index {
                namespace quadtree {
                        // class Root; 
                }
        }
}
 
namespace geos {
namespace index { // geos::index
namespace quadtree { // geos::index::quadtree

class GEOS_DLL Quadtree: public SpatialIndex {
 
private:
 
        std::vector<geom::Envelope *> newEnvelopes;
 
        void collectStats(const geom::Envelope& itemEnv);
 
        Root root;

        double minExtent;
 
public:
        static geom::Envelope* ensureExtent(const geom::Envelope *itemEnv,
                        double minExtent);

        Quadtree()
                :
                root(),
                minExtent(1.0)
        {}
 
        ~Quadtree();

        int depth();

        int size();
        
        void insert(const geom::Envelope *itemEnv, void *item);

        void query(const geom::Envelope *searchEnv, std::vector<void*>& ret);
 

        void query(const geom::Envelope *searchEnv, ItemVisitor& visitor)
        {
                /*
                 * the items that are matched are the items in quads which
                 * overlap the search envelope
                 */
                root.visit(searchEnv, visitor);
        }

        bool remove(const geom::Envelope* itemEnv, void* item);

        std::vector<void*>* queryAll();
 
        std::string toString() const;
 
};
 
} // namespace geos::index::quadtree
} // namespace geos::index
} // namespace geos
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_IDX_QUADTREE_QUADTREE_H