ogrwarpedlayer.h

/******************************************************************************
 *
 * Project:  OpenGIS Simple Features Reference Implementation
 * Purpose:  Defines OGRWarpedLayer class
 * Author:   Even Rouault, even dot rouault at spatialys.com
 *
 ******************************************************************************
 * Copyright (c) 2012-2014, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/
 
#ifndef OGRWARPEDLAYER_H_INCLUDED
#define OGRWARPEDLAYER_H_INCLUDED
 
#ifndef DOXYGEN_SKIP
 
#include "ogrlayerdecorator.h"
#include "ogrlayerwithtranslatefeature.h"
 
#include <memory>
 
#if defined(_MSC_VER)
#pragma warning(push)
// Silence warnings of the type warning C4250: 'OGRWarpedLayer': inherits 'OGRLayerDecorator::OGRLayerDecorator::GetMetadata' via dominance
#pragma warning(disable : 4250)
#endif
 
/************************************************************************/
/*                           OGRWarpedLayer                             */
/************************************************************************/
 
class CPL_DLL OGRWarpedLayer final : public OGRLayerDecorator,
                                     public OGRLayerWithTranslateFeature
{
    CPL_DISALLOW_COPY_ASSIGN(OGRWarpedLayer)
 
  protected:
    OGRFeatureDefn *m_poFeatureDefn = nullptr;
    int m_iGeomField = 0;
 
    OGRGeometryFactory::TransformWithOptionsCache m_transformCacheForward{};
    OGRGeometryFactory::TransformWithOptionsCache m_transformCacheReverse{};
    OGRCoordinateTransformation *m_poCT = nullptr;
    OGRCoordinateTransformation *m_poReversedCT = nullptr; /* may be NULL */
    OGRSpatialReference *m_poSRS = nullptr;
 
    OGREnvelope sStaticEnvelope{};
 
    static int ReprojectEnvelope(OGREnvelope *psEnvelope,
                                 OGRCoordinateTransformation *poCT);
 
    std::unique_ptr<OGRFeature>
    SrcFeatureToWarpedFeature(std::unique_ptr<OGRFeature> poFeature);
    std::unique_ptr<OGRFeature>
    WarpedFeatureToSrcFeature(std::unique_ptr<OGRFeature> poFeature);
 
  public:
    OGRWarpedLayer(
        OGRLayer *poDecoratedLayer, int iGeomField, int bTakeOwnership,
        OGRCoordinateTransformation
            *poCT, /* must NOT be NULL, ownership acquired by OGRWarpedLayer */
        OGRCoordinateTransformation *
            poReversedCT /* may be NULL, ownership acquired by OGRWarpedLayer */);
    ~OGRWarpedLayer() override;
 
    void TranslateFeature(
        std::unique_ptr<OGRFeature> poSrcFeature,
        std::vector<std::unique_ptr<OGRFeature>> &apoOutFeatures) override;
 
    void SetExtent(double dfXMin, double dfYMin, double dfXMax, double dfYMax);
 
    virtual OGRErr ISetSpatialFilter(int iGeomField,
                                     const OGRGeometry *) override;
 
    OGRFeature *GetNextFeature() override;
    OGRFeature *GetFeature(GIntBig nFID) override;
    OGRErr ISetFeature(OGRFeature *poFeature) override;
    OGRErr ICreateFeature(OGRFeature *poFeature) override;
    OGRErr IUpsertFeature(OGRFeature *poFeature) override;
    OGRErr IUpdateFeature(OGRFeature *poFeature, int nUpdatedFieldsCount,
                          const int *panUpdatedFieldsIdx,
                          int nUpdatedGeomFieldsCount,
                          const int *panUpdatedGeomFieldsIdx,
                          bool bUpdateStyleString) override;
 
    const OGRFeatureDefn *GetLayerDefn() const override;
 
    const OGRSpatialReference *GetSpatialRef() const override;
 
    GIntBig GetFeatureCount(int bForce = TRUE) override;
    OGRErr IGetExtent(int iGeomField, OGREnvelope *psExtent,
                      bool bForce = true) override;
 
    int TestCapability(const char *) const override;
 
    virtual bool GetArrowStream(struct ArrowArrayStream *out_stream,
                                CSLConstList papszOptions = nullptr) override;
};
 
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
 
#endif /* #ifndef DOXYGEN_SKIP */
 
#endif  //  OGRWARPEDLAYER_H_INCLUDED