/usr/include/geos/index/quadtree/Key.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
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* $Id: Key.h 2556 2009-06-06 22:22:28Z strk $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2009 Sandro Santilli <strk@keybit.net>
* Copyright (C) 2006 Refractions Research Inc.
* Copyright (C) 2001-2002 Vivid Solutions 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/Key.java rev 1.8 (JTS-1.10)
*
**********************************************************************/
#ifndef GEOS_IDX_QUADTREE_KEY_H
#define GEOS_IDX_QUADTREE_KEY_H
#include <geos/export.h>
#include <geos/geom/Coordinate.h> // for composition
#include <geos/geom/Envelope.h> // for composition
// Forward declarations
// ...
namespace geos {
namespace index { // geos::index
namespace quadtree { // geos::index::quadtree
/**
* \brief
* A Key is a unique identifier for a node in a quadtree.
*
* It contains a lower-left point and a level number. The level number
* is the power of two for the size of the node envelope
*/
class GEOS_DLL Key {
public:
// Doesn't touch the Envelope, might as well be const
static int computeQuadLevel(const geom::Envelope& env);
// Reference to argument won't be used after construction
Key(const geom::Envelope& itemEnv);
// used to be virtual, but I don't see subclasses...
~Key();
/// Returned object ownership retained by this class
const geom::Coordinate& getPoint() const;
int getLevel() const;
/// Returned object ownership retained by this class
const geom::Envelope& getEnvelope() const;
/// Returns newly allocated object (ownership transferred)
geom::Coordinate* getCentre() const;
/**
* return a square envelope containing the argument envelope,
* whose extent is a power of two and which is based at a power of 2
*/
void computeKey(const geom::Envelope& itemEnv);
private:
// the fields which make up the key
// Owned by this class
geom::Coordinate pt;
int level;
// auxiliary data which is derived from the key for use in computation
geom::Envelope env;
void computeKey(int level, const geom::Envelope& itemEnv);
};
} // namespace geos::index::quadtree
} // namespace geos::index
} // namespace geos
#endif // GEOS_IDX_QUADTREE_KEY_H
/**********************************************************************
* $Log$
* Revision 1.1 2006/03/22 12:22:50 strk
* indexQuadtree.h split
*
**********************************************************************/
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