ogrwarpedlayer.h

/******************************************************************************
 * $Id$
 *
 * 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>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 ****************************************************************************/
 
#ifndef OGRWARPEDLAYER_H_INCLUDED
#define OGRWARPEDLAYER_H_INCLUDED
 
#ifndef DOXYGEN_SKIP
 
#include "ogrlayerdecorator.h"
 
/************************************************************************/
/*                           OGRWarpedLayer                             */
/************************************************************************/
 
class OGRWarpedLayer : public OGRLayerDecorator
{
    CPL_DISALLOW_COPY_ASSIGN(OGRWarpedLayer)
 
  protected:
    OGRFeatureDefn *m_poFeatureDefn;
    int m_iGeomField;
 
    OGRCoordinateTransformation *m_poCT;
    OGRCoordinateTransformation *m_poReversedCT; /* may be NULL */
    OGRSpatialReference *m_poSRS;
 
    OGREnvelope sStaticEnvelope{};
 
    static int ReprojectEnvelope(OGREnvelope *psEnvelope,
                                 OGRCoordinateTransformation *poCT);
 
    OGRFeature *SrcFeatureToWarpedFeature(OGRFeature *poFeature);
    OGRFeature *WarpedFeatureToSrcFeature(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 */);
    virtual ~OGRWarpedLayer();
 
    void SetExtent(double dfXMin, double dfYMin, double dfXMax, double dfYMax);
 
    virtual void SetSpatialFilter(OGRGeometry *) override;
    virtual void SetSpatialFilterRect(double dfMinX, double dfMinY,
                                      double dfMaxX, double dfMaxY) override;
    virtual void SetSpatialFilter(int iGeomField, OGRGeometry *) override;
    virtual void SetSpatialFilterRect(int iGeomField, double dfMinX,
                                      double dfMinY, double dfMaxX,
                                      double dfMaxY) override;
 
    virtual OGRFeature *GetNextFeature() override;
    virtual OGRFeature *GetFeature(GIntBig nFID) override;
    virtual OGRErr ISetFeature(OGRFeature *poFeature) override;
    virtual OGRErr ICreateFeature(OGRFeature *poFeature) override;
    virtual OGRErr IUpsertFeature(OGRFeature *poFeature) override;
    OGRErr IUpdateFeature(OGRFeature *poFeature, int nUpdatedFieldsCount,
                          const int *panUpdatedFieldsIdx,
                          int nUpdatedGeomFieldsCount,
                          const int *panUpdatedGeomFieldsIdx,
                          bool bUpdateStyleString) override;
 
    virtual OGRFeatureDefn *GetLayerDefn() override;
 
    virtual OGRSpatialReference *GetSpatialRef() override;
 
    virtual GIntBig GetFeatureCount(int bForce = TRUE) override;
    virtual OGRErr GetExtent(int iGeomField, OGREnvelope *psExtent,
                             int bForce = TRUE) override;
    virtual OGRErr GetExtent(OGREnvelope *psExtent, int bForce = TRUE) override;
 
    virtual int TestCapability(const char *) override;
};
 
#endif /* #ifndef DOXYGEN_SKIP */
 
#endif  //  OGRWARPEDLAYER_H_INCLUDED