/usr/include/geos/linearref/LocationIndexOfPoint.h is in libgeos++-dev 3.6.2-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2011 Sandro Santilli <strk@keybit.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/LinearGeometryBuilder.java r466
*
**********************************************************************/
#ifndef GEOS_LINEARREF_LOCATIONINDEXOFPOINT_H
#define GEOS_LINEARREF_LOCATIONINDEXOFPOINT_H
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/linearref/LinearLocation.h>
namespace geos
{
namespace linearref // geos::linearref
{
/**
* Computes the {@link LinearLocation} of the point
* on a linear {@link Geometry} nearest a given {@link Coordinate}.
* The nearest point is not necessarily unique; this class
* always computes the nearest point closest to
* the start of the geometry.
*/
class LocationIndexOfPoint
{
private:
const geom::Geometry *linearGeom;
LinearLocation indexOfFromStart(const geom::Coordinate& inputPt, const LinearLocation* minIndex) const;
public:
static LinearLocation indexOf(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt);
static LinearLocation indexOfAfter(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt, const LinearLocation* minIndex);
LocationIndexOfPoint(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
*/
LinearLocation indexOf(const geom::Coordinate& inputPt) const;
/**
* Find the nearest {@link LinearLocation} along the linear {@link Geometry}
* to a given {@link Coordinate}
* after the specified minimum {@link LinearLocation}.
* 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
*/
LinearLocation indexOfAfter(const geom::Coordinate& inputPt, const LinearLocation* minIndex) const;
};
}
}
#endif
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