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ExtractLineByLocation.h

00001 /**********************************************************************
00002  * $Id: ExtractLineByLocation.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/ExtractLineByLocation.java rev. 1.10
00018  *
00019  **********************************************************************/
00020 
00021 #ifndef GEOS_LINEARREF_EXTRACTLINEBYLOCATION_H
00022 #define GEOS_LINEARREF_EXTRACTLINEBYLOCATION_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 
00037 class ExtractLineByLocation
00038 {
00039 
00040 private:
00041         const geom::Geometry *line;
00042         geom::Geometry *reverse(const geom::Geometry *linear);
00043 
00051         geom::LineString* computeLine(const LinearLocation& start, const LinearLocation& end);
00052 
00060         geom::Geometry *computeLinear(const LinearLocation& start, const LinearLocation& end);
00061 
00062 public:
00074         static geom::Geometry *extract(const geom::Geometry *line, const LinearLocation& start, const LinearLocation& end);
00075 
00076         ExtractLineByLocation(const geom::Geometry *line);
00077 
00086         geom::Geometry *extract(const LinearLocation& start, const LinearLocation& end);
00087 
00088 };
00089 }
00090 }
00091 #endif

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