/usr/include/geos/algorithm/LengthIndexOfPoint.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
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* $Id: LengthIndexOfPoint.h 2809 2009-12-06 01:05:24Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2005-2006 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: linearref/LengthIndexOfPoint.java rev. 1.10
*
**********************************************************************/
#ifndef GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
#define GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
#include <string>
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/LineSegment.h>
#include <geos/linearref/LinearLocation.h>
namespace geos
{
namespace linearref // geos::linearref
{
class LengthIndexOfPoint
{
private:
const geom::Geometry *linearGeom;
double indexOfFromStart(const geom::Coordinate& inputPt, const double minIndex) const;
double segmentNearestMeasure(const geom::LineSegment *seg,
const geom::Coordinate& inputPt,
double segmentStartMeasure) const;
public:
static double indexOf(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt);
static double indexOfAfter(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt, double minIndex);
LengthIndexOfPoint(const geom::Geometry *linearGeom);
/**
* Find the nearest location along a linear {@link Geometry} to a given point.
*
* @param inputPt the coordinate to locate
* @return the location of the nearest point
*/
double indexOf(const geom::Coordinate& inputPt) const;
/**
* Finds the nearest index along the linear {@link Geometry}
* to a given {@link Coordinate}
* after the specified minimum index.
* If possible the location returned will be strictly greater than the
* <code>minLocation</code>.
* If this is not possible, the
* value returned will equal <code>minLocation</code>.
* (An example where this is not possible is when
* minLocation = [end of line] ).
*
* @param inputPt the coordinate to locate
* @param minLocation the minimum location for the point location
* @return the location of the nearest point
*/
double indexOfAfter(const geom::Coordinate& inputPt, double minIndex) const;
};
}
}
#endif
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