/usr/include/geos/algorithm/LengthLocationMap.h is in libgeos-dev 3.2.2-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | /**********************************************************************
* $Id: LengthLocationMap.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/LengthLocationMap.java rev. 1.10
*
**********************************************************************/
#ifndef GEOS_LINEARREF_LENGTHLOCATIONMAP_H
#define GEOS_LINEARREF_LENGTHLOCATIONMAP_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} for a given length
* along a linear {@link Geometry}.
* Negative lengths are measured in reverse from end of the linear geometry.
* Out-of-range values are clamped.
*/
class LengthLocationMap
{
private:
const geom::Geometry *linearGeom;
LinearLocation getLocationForward(double length) const;
public:
// TODO: cache computed cumulative length for each vertex
// TODO: support user-defined measures
// TODO: support measure index for fast mapping to a location
/**
* Computes the {@link LinearLocation} for a
* given length along a linear {@link Geometry}.
*
* @param line the linear geometry to use
* @param length the length index of the location
* @return the {@link LinearLocation} for the length
*/
static LinearLocation getLocation(const geom::Geometry *linearGeom, double length);
/**
* Computes the length for a given {@link LinearLocation}
* on a linear {@link Geometry}.
*
* @param line the linear geometry to use
* @param loc the {@link LinearLocation} index of the location
* @return the length for the {@link LinearLocation}
*/
static double getLength(const geom::Geometry *linearGeom, const LinearLocation& loc);
LengthLocationMap(const geom::Geometry *linearGeom);
/**
* Compute the {@link LinearLocation} corresponding to a length.
* Negative lengths are measured in reverse from end of the linear geometry.
* Out-of-range values are clamped.
*
* @param length the length index
* @return the corresponding LinearLocation
*/
LinearLocation getLocation(double length) const;
double getLength(const LinearLocation& loc) const;
};
}
}
#endif
|