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ComponentCoordinateExtracter.h

00001 /**********************************************************************
00002  * $Id: ComponentCoordinateExtracter.h 2772 2009-12-03 19:30:54Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00008  * Copyright (C) 2006 Refractions Research 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 #ifndef GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H
00018 #define GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H
00019 
00020 #include <vector>
00021 
00022 #include <geos/geom/GeometryComponentFilter.h>
00023 #include <geos/geom/Geometry.h> // to be removed when we have the .inl
00024 #include <geos/geom/Coordinate.h> // to be removed when we have the .inl
00025 #include <geos/geom/LineString.h> // to be removed when we have the .inl
00026 #include <geos/geom/Point.h> // to be removed when we have the .inl
00027 //#include <geos/platform.h>
00028 
00029 namespace geos {
00030 namespace geom { // geos::geom
00031 namespace util { // geos::geom::util
00032 
00039 class ComponentCoordinateExtracter : public GeometryComponentFilter 
00040 {
00041 public:
00049         static void getCoordinates(const Geometry &geom, std::vector<const Coordinate*> &ret)
00050         {
00051                 ComponentCoordinateExtracter cce(ret);
00052                 geom.apply_ro(&cce);
00053         }
00054 
00059         ComponentCoordinateExtracter( std::vector<const Coordinate*> &newComps)
00060                 :
00061                 comps(newComps)
00062                 {}
00063 
00064         void filter_rw( Geometry * geom)
00065         {
00066                 if (    geom->getGeometryTypeId() == geos::geom::GEOS_LINEARRING 
00067                         ||      geom->getGeometryTypeId() == geos::geom::GEOS_LINESTRING
00068                         ||      geom->getGeometryTypeId() == geos::geom::GEOS_POINT ) 
00069                         comps.push_back( geom->getCoordinate() );
00070                 //if (  typeid( *geom ) == typeid( LineString )
00071                 //      ||      typeid( *geom ) == typeid( Point ) )
00072                 //if ( const Coordinate *ls=dynamic_cast<const Coordinate *>(geom) )
00073                 //      comps.push_back(ls);
00074         }
00075 
00076         void filter_ro( const Geometry * geom)
00077         {
00078                 //if (  typeid( *geom ) == typeid( LineString )
00079                 //      ||      typeid( *geom ) == typeid( Point ) )
00080                 if (    geom->getGeometryTypeId() == geos::geom::GEOS_LINEARRING 
00081                         ||      geom->getGeometryTypeId() == geos::geom::GEOS_LINESTRING
00082                         ||      geom->getGeometryTypeId() == geos::geom::GEOS_POINT ) 
00083                         comps.push_back( geom->getCoordinate() );
00084                 //if ( const Coordinate *ls=dynamic_cast<const Coordinate *>(geom) )
00085                 //      comps.push_back(ls);
00086         }
00087 
00088 private:
00089 
00090         Coordinate::ConstVect &comps;
00091 
00092     // Declare type as noncopyable
00093     ComponentCoordinateExtracter(const ComponentCoordinateExtracter& other);
00094     ComponentCoordinateExtracter& operator=(const ComponentCoordinateExtracter& rhs);
00095 };
00096 
00097 } // namespace geos.geom.util
00098 } // namespace geos.geom
00099 } // namespace geos
00100 
00101 #endif //GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H
00102 
00103 /**********************************************************************
00104  * $Log$
00105  *
00106  **********************************************************************/

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