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