/usr/include/qgis/qgsspatialindex.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
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qgsspatialindex.h - wrapper class for spatial index library
----------------------
begin : December 2006
copyright : (C) 2006 by Martin Dobias
email : wonder.sk at gmail dot com
***************************************************************************
* *
* 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 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/* $Id$ */
#ifndef QGSSPATIALINDEX_H
#define QGSSPATIALINDEX_H
// forward declaration
namespace SpatialIndex
{
class IStorageManager;
class ISpatialIndex;
namespace StorageManager
{
class IBuffer;
}
}
namespace Tools
{
namespace Geometry
{
class Region;
}
}
class QgsFeature;
class QgsRectangle;
class QgsPoint;
#include <QList>
class CORE_EXPORT QgsSpatialIndex
{
public:
/* creation of spatial index */
/** create new spatial index that will be stored in memory */
//static QgsSpatialIndex* createMemoryIndex();
/** create new spatial index that stores its data on disk */
//static QgsSpatialIndex* createDiskIndex(QString fileName);
/** constructor - creates R-tree */
QgsSpatialIndex();
/** destructor finalizes work with spatial index */
~QgsSpatialIndex();
/* operations */
/** add feature to index */
bool insertFeature( QgsFeature& f );
/** remove feature from index */
bool deleteFeature( QgsFeature& f );
/* queries */
/** returns features that intersect the specified rectangle */
QList<int> intersects( QgsRectangle rect );
/** returns nearest neighbors (their count is specified by second parameter) */
QList<int> nearestNeighbor( QgsPoint point, int neighbors );
protected:
Tools::Geometry::Region rectToRegion( QgsRectangle rect );
bool featureInfo( QgsFeature& f, Tools::Geometry::Region& r, long& id );
private:
/** storage manager */
SpatialIndex::IStorageManager* mStorageManager;
/** buffer for index data */
SpatialIndex::StorageManager::IBuffer* mStorage;
/** R-tree containing spatial index */
SpatialIndex::ISpatialIndex* mRTree;
};
#endif
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