/usr/include/geos/noding/SegmentStringUtil.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
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* $Id: SegmentStringUtil.h 2325 2009-04-08 13:02:06Z strk $
*
* 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 Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
*
**********************************************************************
*
* Last port: noding/SegmentStringUtil.java rev. 1.2 (JTS-1.9)
*
**********************************************************************/
#ifndef GEOS_NODING_SEGMENTSTRINGUTIL_H
#define GEOS_NODING_SEGMENTSTRINGUTIL_H
#include <geos/noding/NodedSegmentString.h>
#include <geos/geom/LineString.h>
#include <geos/geom/CoordinateSequence.h>
#include <geos/geom/util/LinearComponentExtracter.h>
namespace geos {
namespace noding { // geos::noding
/** \brief
* Utility methods for processing {@link SegmentString}s.
*
* @author Martin Davis
*
*/
class SegmentStringUtil
{
public:
/** \brief
* Extracts all linear components from a given {@link Geometry}
* to {@link SegmentString}s.
*
* The SegmentString data item is set to be the source Geometry.
*
* @param geom the geometry to extract from
* @param segStr a List of SegmentStrings (output parameter).
* Ownership of elements pushed to the vector
* is transferred to caller. Note that the
* CoordinateSequence associated with the
* returned SegmentString elements are allocated
* by this function, so must also be destroyed
* by caller.
* TODO: check if this can be optimized by leaving
* ownership of actual CoordinateSequence
* to the passed Geometry.
*/
static void extractSegmentStrings(const geom::Geometry * g,
SegmentString::ConstVect& segStr)
{
geom::LineString::ConstVect lines;
geom::util::LinearComponentExtracter::getLines(*g, lines);
for (size_t i=0, n=lines.size(); i<n; i++)
{
geom::LineString* line = (geom::LineString*)(lines[i]);
// we take ownership of the coordinates here
// TODO: check if this can be optimized by getting
// the internal CS.
geom::CoordinateSequence* pts = line->getCoordinates();
segStr.push_back(new NodedSegmentString(pts, g));
}
}
};
} // geos::noding
} // geos
#endif // GEOS_NODING_SEGMENTSTRINGUTIL_H
/**********************************************************************
* $Log$
**********************************************************************/
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