GEOS
3.6.2
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00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2005-2006 Refractions Research Inc. 00007 * Copyright (C) 2001-2002 Vivid Solutions Inc. 00008 * 00009 * This is free software; you can redistribute and/or modify it under 00010 * the terms of the GNU Lesser General Public Licence as published 00011 * by the Free Software Foundation. 00012 * See the COPYING file for more information. 00013 * 00014 ********************************************************************** 00015 * 00016 * Last port: linearref/LengthIndexOfPoint.java rev. 1.10 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_LINEARREF_LENGTHINDEXOFPOINT_H 00021 #define GEOS_LINEARREF_LENGTHINDEXOFPOINT_H 00022 00023 #include <string> 00024 00025 #include <geos/geom/Coordinate.h> 00026 #include <geos/geom/Geometry.h> 00027 #include <geos/geom/LineSegment.h> 00028 #include <geos/linearref/LinearLocation.h> 00029 00030 00031 namespace geos 00032 { 00033 namespace linearref // geos::linearref 00034 { 00035 00045 class LengthIndexOfPoint 00046 { 00047 00048 private: 00049 const geom::Geometry *linearGeom; 00050 00051 double indexOfFromStart(const geom::Coordinate& inputPt, const double minIndex) const; 00052 00053 double segmentNearestMeasure(const geom::LineSegment *seg, 00054 const geom::Coordinate& inputPt, 00055 double segmentStartMeasure) const; 00056 public: 00057 static double indexOf(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt); 00058 00059 static double indexOfAfter(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt, double minIndex); 00060 00061 LengthIndexOfPoint(const geom::Geometry *linearGeom); 00062 00069 double indexOf(const geom::Coordinate& inputPt) const; 00070 00086 double indexOfAfter(const geom::Coordinate& inputPt, double minIndex) const; 00087 00088 }; 00089 } 00090 } 00091 #endif