/usr/include/qgis/qgsspatialindex.h is in libqgis-dev 2.14.11+dfsg-3+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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. *
* *
***************************************************************************/
#ifndef QGSSPATIALINDEX_H
#define QGSSPATIALINDEX_H
// forward declaration
namespace SpatialIndex
{
class IStorageManager;
class ISpatialIndex;
class Region;
class Point;
namespace StorageManager
{
class IBuffer;
}
}
class QgsFeature;
class QgsRectangle;
class QgsPoint;
#include <QList>
#include <QSharedDataPointer>
#include "qgsfeature.h"
class QgsSpatialIndexData;
class QgsFeatureIterator;
class CORE_EXPORT QgsSpatialIndex
{
public:
/* creation of spatial index */
/** Constructor - creates R-tree */
QgsSpatialIndex();
/** Constructor - creates R-tree and bulk loads it with features from the iterator.
* This is much faster approach than creating an empty index and then inserting features one by one.
*
* @note added in 2.8
*/
explicit QgsSpatialIndex( const QgsFeatureIterator& fi );
/** Copy constructor */
QgsSpatialIndex( const QgsSpatialIndex& other );
/** Destructor finalizes work with spatial index */
~QgsSpatialIndex();
/** Implement assignment operator */
QgsSpatialIndex& operator=( const QgsSpatialIndex& other );
/* operations */
/** Add feature to index */
bool insertFeature( const QgsFeature& f );
/** Remove feature from index */
bool deleteFeature( const QgsFeature& f );
/* queries */
/** Returns features that intersect the specified rectangle */
QList<QgsFeatureId> intersects( const QgsRectangle& rect ) const;
/** Returns nearest neighbors (their count is specified by second parameter) */
QList<QgsFeatureId> nearestNeighbor( const QgsPoint& point, int neighbors ) const;
/* debugging */
//! get reference count - just for debugging!
QAtomicInt refs() const;
protected:
//! @note not available in python bindings
static SpatialIndex::Region rectToRegion( const QgsRectangle& rect );
//! @note not available in python bindings
static bool featureInfo( const QgsFeature& f, SpatialIndex::Region& r, QgsFeatureId &id );
friend class QgsFeatureIteratorDataStream; // for access to featureInfo()
private:
QSharedDataPointer<QgsSpatialIndexData> d;
};
#endif
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