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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