GeometryCollection.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005 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/GeometryCollection.java rev. 1.41
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
#include <geos/geom/Geometry.h> // for inheritance
#include <geos/geom/Envelope.h> // for proper use of unique_ptr<>
#include <geos/geom/Dimension.h> // for Dimension::DimensionType
 
#include <string>
#include <vector>
#include <memory> // for unique_ptr
 
// Forward declarations
namespace geos {
namespace geom { // geos::geom
class Coordinate;
class CoordinateSequenceFilter;
}
}
 
namespace geos {
namespace geom { // geos::geom

class GEOS_DLL GeometryCollection : public Geometry {
 
public:
    friend class GeometryFactory;
 
    typedef std::vector<std::unique_ptr<Geometry>>::const_iterator const_iterator;
 
    typedef std::vector<std::unique_ptr<Geometry>>::iterator iterator;
 
    const_iterator begin() const
    {
        return geometries.begin();
    };
 
    const_iterator end() const
    {
        return geometries.end();
    };

    std::unique_ptr<GeometryCollection> clone() const
    {
        return std::unique_ptr<GeometryCollection>(cloneImpl());
    }
 
    ~GeometryCollection() override = default;
 
    void setSRID(int) override;

    std::unique_ptr<CoordinateSequence> getCoordinates() const override;
 
    bool isEmpty() const override;

    Dimension::DimensionType getDimension() const override;
 
    bool hasDimension(Dimension::DimensionType d) const override;
 
    bool isDimensionStrict(Dimension::DimensionType d) const override;

    uint8_t getCoordinateDimension() const override;
 
    bool hasM() const override;
 
    bool hasZ() const override;
 
    std::unique_ptr<Geometry> getBoundary() const override;

    int getBoundaryDimension() const override;
 
    std::size_t getNumPoints() const override;
 
    std::string getGeometryType() const override;
 
    GeometryTypeId getGeometryTypeId() const override;
 
    bool equalsExact(const Geometry* other,
                     double tolerance = 0) const override;
 
    bool equalsIdentical(const Geometry* other) const override;
 
    void apply_ro(CoordinateFilter* filter) const override;
 
    void apply_rw(const CoordinateFilter* filter) override;
 
    void apply_ro(GeometryFilter* filter) const override;
 
    void apply_rw(GeometryFilter* filter) override;
 
    void apply_ro(GeometryComponentFilter* filter) const override;
 
    void apply_rw(GeometryComponentFilter* filter) override;
 
    void apply_rw(CoordinateSequenceFilter& filter) override;
 
    void apply_ro(CoordinateSequenceFilter& filter) const override;
 
    void normalize() override;
 
    const CoordinateXY* getCoordinate() const override;

    double getArea() const override;

    double getLength() const override;

    std::size_t getNumGeometries() const override;
 
    std::unique_ptr<GeometryCollection> getCurved(const algorithm::LineToCurveParams& params) {
        return std::unique_ptr<GeometryCollection>(getCurvedImpl(params));
    }
 
    std::unique_ptr<GeometryCollection> getLinearized(const algorithm::CurveToLineParams& params) {
        return std::unique_ptr<GeometryCollection>(getLinearizedImpl(params));
    }

    const Geometry* getGeometryN(std::size_t n) const override;

    std::vector<std::unique_ptr<Geometry>> releaseGeometries();

    std::unique_ptr<GeometryCollection> reverse() const { return std::unique_ptr<GeometryCollection>(reverseImpl()); }
 
    const Envelope* getEnvelopeInternal() const override {
        if (envelope.isNull()) {
            envelope = computeEnvelopeInternal();
        }
        return &envelope;
    }
 
protected:
 
    struct CollectionFlags {
        bool flagsCalculated;
        bool hasPoints;
        bool hasLines;
        bool hasPolygons;
        bool hasM;
        bool hasZ;
        bool hasCurves;
    };
 
    GeometryCollection(const GeometryCollection& gc);
    GeometryCollection& operator=(const GeometryCollection& gc);

    GeometryCollection(std::vector<std::unique_ptr<Geometry>> && newGeoms, const GeometryFactory& newFactory);

    template<typename T>
    GeometryCollection(std::vector<std::unique_ptr<T>> && newGeoms, const GeometryFactory& newFactory) :
        GeometryCollection(toGeometryArray(std::move(newGeoms)), newFactory) {}
 
    GeometryCollection* cloneImpl() const override { return new GeometryCollection(*this); }
 
    GeometryCollection* reverseImpl() const override;
 
    GeometryCollection* getLinearizedImpl(const algorithm::CurveToLineParams&) const override;
 
    GeometryCollection* getCurvedImpl(const algorithm::LineToCurveParams&) const override;
 
    int
    getSortIndex() const override
    {
        return SORTINDEX_GEOMETRYCOLLECTION;
    };
 
    std::vector<std::unique_ptr<Geometry>> geometries;
    mutable CollectionFlags flags;
    mutable Envelope envelope;
 
    Envelope computeEnvelopeInternal() const;
 
    void geometryChangedAction() override {
        envelope.setToNull();
        flags.flagsCalculated = false;
    }
 
    int compareToSameClass(const Geometry* gc) const override;
 
    bool hasCurvedComponents() const override;
 
    void setFlags() const;
 
};
 
} // namespace geos::geom
} // namespace geos