GeometryTransformer.h

/**********************************************************************
 * $Id: GeometryTransformer.h 2556 2009-06-06 22:22:28Z strk $
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.refractions.net
 *
 * Copyright (C) 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: geom/util/GeometryTransformer.java rev. 1.6 (JTS-1.7.1+)
 *
 **********************************************************************/

#ifndef GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H
#define GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H


#include <geos/export.h>
#include <geos/geom/Coordinate.h> // destructor visibility for vector
#include <geos/geom/Geometry.h> // destructor visibility for auto_ptr
#include <geos/geom/CoordinateSequence.h> // destructor visibility for auto_ptr

#include <memory> // for auto_ptr
#include <vector>

// Forward declarations
namespace geos {
        namespace geom {
                class Geometry;
                class GeometryFactory;
                class Point;
                class LinearRing;
                class LineString;
                class Polygon;
                class MultiPoint;
                class MultiPolygon;
                class MultiLineString;
                class GeometryCollection;
                namespace util {
                        //class GeometryEditorOperation;
                }
        }
}


namespace geos {
namespace geom { // geos.geom
namespace util { // geos.geom.util

class GEOS_DLL GeometryTransformer {

public:

        GeometryTransformer();

        virtual ~GeometryTransformer();

        std::auto_ptr<Geometry> transform(const Geometry* nInputGeom);

protected:

        const GeometryFactory* factory;

        CoordinateSequence::AutoPtr createCoordinateSequence(
                        std::auto_ptr< std::vector<Coordinate> > coords);

        virtual CoordinateSequence::AutoPtr transformCoordinates(
                        const CoordinateSequence* coords,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformPoint(
                        const Point* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformMultiPoint(
                        const MultiPoint* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformLinearRing(
                        const LinearRing* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformLineString(
                        const LineString* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformMultiLineString(
                        const MultiLineString* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformPolygon(
                        const Polygon* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformMultiPolygon(
                        const MultiPolygon* geom,
                        const Geometry* parent);

        virtual Geometry::AutoPtr transformGeometryCollection(
                        const GeometryCollection* geom,
                        const Geometry* parent);

private:

        const Geometry* inputGeom;

        // these could eventually be exposed to clients
        bool pruneEmptyGeometry;

        bool preserveGeometryCollectionType;

        bool preserveCollections;

        bool preserveType;


};


} // namespace geos.geom.util
} // namespace geos.geom
} // namespace geos

//#ifdef GEOS_INLINE
//# include "geos/geom/util/GeometryTransformer.inl"
//#endif

#endif // GEOS_GEOM_UTIL_GEOMETRYTRANSFORMER_H

/**********************************************************************
 * $Log$
 * Revision 1.4  2006/06/19 21:20:22  strk
 * updated port info
 *
 * Revision 1.3  2006/04/13 14:25:17  strk
 * TopologyPreservingSimplifier initial port
 *
 * Revision 1.2  2006/04/11 12:56:06  strk
 * used typedef for auto_ptr<CoordinateSequence>
 *
 * Revision 1.1  2006/04/11 12:21:49  strk
 * GeometryTransformer class ported
 *
 **********************************************************************/

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