GEOS 3.9.1
LengthIndexOfPoint.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2005-2006 Refractions Research Inc.
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************
15 *
16 * Last port: linearref/LengthIndexOfPoint.java rev. 1.10
17 *
18 **********************************************************************/
19
20#ifndef GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
21#define GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
22
23#include <string>
24
25#include <geos/geom/Coordinate.h>
26#include <geos/geom/Geometry.h>
27#include <geos/geom/LineSegment.h>
28#include <geos/linearref/LinearLocation.h>
29
30
31namespace geos {
32namespace linearref { // geos::linearref
33
44
45private:
46 const geom::Geometry* linearGeom;
47
48 double indexOfFromStart(const geom::Coordinate& inputPt, const double minIndex) const;
49
50 double segmentNearestMeasure(const geom::LineSegment* seg,
51 const geom::Coordinate& inputPt,
52 double segmentStartMeasure) const;
53public:
54 static double indexOf(const geom::Geometry* linearGeom, const geom::Coordinate& inputPt);
55
56 static double indexOfAfter(const geom::Geometry* linearGeom, const geom::Coordinate& inputPt, double minIndex);
57
58 LengthIndexOfPoint(const geom::Geometry* linearGeom);
59
66 double indexOf(const geom::Coordinate& inputPt) const;
67
83 double indexOfAfter(const geom::Coordinate& inputPt, double minIndex) const;
84
85};
86}
87}
88#endif
Coordinate is the lightweight class used to store coordinates.
Definition Coordinate.h:60
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition Geometry.h:188
Definition LineSegment.h:59
Computes the length index of the point on a linear Geometry nearest a given Coordinate.
Definition LengthIndexOfPoint.h:43
double indexOf(const geom::Coordinate &inputPt) const
double indexOfAfter(const geom::Coordinate &inputPt, double minIndex) const
Finds the nearest index along the linear Geometry to a given Coordinate after the specified minimum i...
Basic namespace for all GEOS functionalities.
Definition IndexedNestedRingTester.h:26