GEOS  3.8.0dev
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.
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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
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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 
31 namespace geos {
32 namespace linearref { // geos::linearref
33 
44 
45 private:
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;
53 public:
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
Definition: LineSegment.h:59
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
Computes the length index of the point on a linear Geometry nearest a given Coordinate.
Definition: LengthIndexOfPoint.h:43
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25