GEOS: LengthIndexOfPoint.h Source File

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List

# LengthIndexOfPoint.h

    00001 /**********************************************************************
    00002  * $Id: LengthIndexOfPoint.h 3012 2010-06-19 11:14:21Z strk $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2005-2006 Refractions Research Inc.
    00008  * Copyright (C) 2001-2002 Vivid Solutions Inc.
    00009  *
    00010  * This is free software; you can redistribute and/or modify it under
    00011  * the terms of the GNU Lesser General Public Licence as published
    00012  * by the Free Software Foundation.
    00013  * See the COPYING file for more information.
    00014  *
    00015  **********************************************************************
    00016  *
    00017  * Last port: linearref/LengthIndexOfPoint.java rev. 1.10
    00018  *
    00019  **********************************************************************/
    00020
    00021 #ifndef GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
    00022 #define GEOS_LINEARREF_LENGTHINDEXOFPOINT_H
    00023
    00024 #include <string>
    00025
    00026 #include <geos/geom/Coordinate.h>
    00027 #include <geos/geom/Geometry.h>
    00028 #include <geos/geom/LineSegment.h>
    00029 #include <geos/linearref/LinearLocation.h>
    00030
    00031
    00032 namespace geos
    00033 {
    00034 namespace linearref   // geos::linearref
    00035 {
    00036
    00046 class LengthIndexOfPoint
    00047 {
    00048
    00049 private:
    00050         const geom::Geometry *linearGeom;
    00051
    00052         double indexOfFromStart(const geom::Coordinate& inputPt, const double minIndex) const;
    00053
    00054         double segmentNearestMeasure(const geom::LineSegment *seg,
    00055                                const geom::Coordinate& inputPt,
    00056                                double segmentStartMeasure) const;
    00057 public:
    00058         static double indexOf(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt);
    00059
    00060         static double indexOfAfter(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt, double minIndex);
    00061
    00062         LengthIndexOfPoint(const geom::Geometry *linearGeom);
    00063
    00070         double indexOf(const geom::Coordinate& inputPt) const;
    00071
    00087         double indexOfAfter(const geom::Coordinate& inputPt, double minIndex) const;
    00088
    00089 };
    00090 }
    00091 }
    00092 #endif