GeometryCombiner.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2006-2011 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/GeometryCombiner.java r320 (JTS-1.12)
 *
 **********************************************************************/
 
#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(const Geometry* g0, const Geometry* g1);

    static Geometry* combine(const Geometry* g0, const Geometry* g1, const 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);
 
    // Declare type as noncopyable
    GeometryCombiner(const GeometryCombiner& other);
    GeometryCombiner& operator=(const GeometryCombiner& rhs);
};
 
} // namespace geos.geom.util
} // namespace geos.geom
} // namespace geos
 
#endif