/usr/include/geos/simplify/DouglasPeuckerLineSimplifier.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
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* $Id: DouglasPeuckerLineSimplifier.h 2785 2009-12-03 19:55:11Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* 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 Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************
*
* Last port: simplify/DouglasPeuckerLineSimplifier.java rev. 1.4
*
**********************************************************************/
#ifndef GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H
#define GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H
#include <geos/export.h>
#include <vector>
#include <memory> // for auto_ptr
#include <cstddef>
// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
}
}
namespace geos {
namespace simplify { // geos::simplify
using namespace std;
/** \brief
* Simplifies a linestring (sequence of points) using
* the standard Douglas-Peucker algorithm.
*/
class GEOS_DLL DouglasPeuckerLineSimplifier {
public:
typedef std::vector<short int> BoolVect;
typedef std::auto_ptr<BoolVect> BoolVectAutoPtr;
typedef std::vector<geom::Coordinate> CoordsVect;
typedef std::auto_ptr<CoordsVect> CoordsVectAutoPtr;
/** \brief
* Returns a newly allocated Coordinate vector, wrapped
* into an auto_ptr
*/
static CoordsVectAutoPtr simplify(
const CoordsVect& nPts,
double distanceTolerance);
DouglasPeuckerLineSimplifier(const CoordsVect& nPts);
/** \brief
* Sets the distance tolerance for the simplification.
*
* All vertices in the simplified linestring will be within this
* distance of the original linestring.
*
* @param nDistanceTolerance the approximation tolerance to use
*/
void setDistanceTolerance(double nDistanceTolerance);
/** \brief
* Returns a newly allocated Coordinate vector, wrapped
* into an auto_ptr
*/
CoordsVectAutoPtr simplify();
private:
const CoordsVect& pts;
BoolVectAutoPtr usePt;
double distanceTolerance;
void simplifySection(size_t i, size_t j);
// Declare type as noncopyable
DouglasPeuckerLineSimplifier(const DouglasPeuckerLineSimplifier& other);
DouglasPeuckerLineSimplifier& operator=(const DouglasPeuckerLineSimplifier& rhs);
};
} // namespace geos::simplify
} // namespace geos
#endif // GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H
/**********************************************************************
* $Log$
* Revision 1.4 2006/07/10 10:16:06 strk
* changed vector<bool> to vector<short int> (see bug#101)
*
* Revision 1.3 2006/06/12 11:29:23 strk
* unsigned int => size_t
*
* Revision 1.2 2006/04/13 10:39:12 strk
* Initial implementation of TaggedLinesSimplifier class
*
* Revision 1.1 2006/04/03 10:16:11 strk
* DouglasPeuckerLineSimplifier class port
*
**********************************************************************/
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