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LocationIndexOfPoint.h

00001 /**********************************************************************
00002  * $Id: LocationIndexOfPoint.h 2809 2009-12-06 01:05:24Z mloskot $
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/LinearGeometryBuilder.java rev. 1.10
00018  *
00019  **********************************************************************/
00020 
00021 #ifndef GEOS_LINEARREF_LOCATIONINDEXOFPOINT_H
00022 #define GEOS_LINEARREF_LOCATIONINDEXOFPOINT_H
00023 
00024 #include <geos/geom/Coordinate.h>
00025 #include <geos/geom/Geometry.h>
00026 #include <geos/linearref/LinearLocation.h>
00027 
00028 namespace geos
00029 {
00030 namespace linearref   // geos::linearref
00031 {
00032 
00040 class LocationIndexOfPoint
00041 {
00042 
00043 private:
00044         const geom::Geometry *linearGeom;
00045 
00046         LinearLocation indexOfFromStart(const geom::Coordinate& inputPt, LinearLocation* minIndex) const;
00047 
00048 public:
00049         static LinearLocation indexOf(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt);
00050 
00051         static LinearLocation indexOfAfter(const geom::Geometry *linearGeom, const geom::Coordinate& inputPt, LinearLocation* minIndex);
00052 
00053         LocationIndexOfPoint(const geom::Geometry *linearGeom);
00054 
00061         LinearLocation indexOf(const geom::Coordinate& inputPt) const;
00077         LinearLocation indexOfAfter(const geom::Coordinate& inputPt, LinearLocation* minIndex) const;
00078 };
00079 }
00080 }
00081 #endif

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