GeometryCombiner.h

/**********************************************************************
 * $Id: GeometryCombiner.h 2253 2009-01-23 23:58:18Z mloskot $
 *
 * 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.
 *
 **********************************************************************/
#ifndef GEOS_GEOM_UTIL_GEOMETRYCOMBINER_H
#define GEOS_GEOM_UTIL_GEOMETRYCOMBINER_H

#include <vector>

// Forward declarations
namespace geos {
    namespace geom {
        class Geometry;
        class GeometryFactory;
    }
}

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

class GeometryCombiner 
{
public:
    static Geometry* combine(std::vector<Geometry*> const& geoms);

    static Geometry* combine(Geometry* g0, Geometry* g1);

    static Geometry* combine(Geometry* g0, Geometry* g1, Geometry* g2);

private:
    GeometryFactory const* geomFactory;
    bool skipEmpty;
    std::vector<Geometry*> const& inputGeoms;

public:
    GeometryCombiner(std::vector<Geometry*> const& geoms);

    static GeometryFactory const* extractFactory(std::vector<Geometry*> const& geoms);

    Geometry* combine();

private:
    void extractElements(Geometry* geom, std::vector<Geometry*>& elems);
};

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

#endif

/**********************************************************************
 * $Log$
 *
 **********************************************************************/

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