# ogrwarpedlayer.h

    00001 /******************************************************************************
    00002  * $Id: ogrwarpedlayer.h 27044 2014-03-16 23:41:27Z rouault $
    00003  *
    00004  * Project:  OpenGIS Simple Features Reference Implementation
    00005  * Purpose:  Defines OGRWarpedLayer class
    00006  * Author:   Even Rouault, even dot rouault at mines dash paris dot org
    00007  *
    00008  ******************************************************************************
    00009  * Copyright (c) 2012-2014, Even Rouault <even dot rouault at mines-paris dot org>
    00010  *
    00011  * Permission is hereby granted, free of charge, to any person obtaining a
    00012  * copy of this software and associated documentation files (the "Software"),
    00013  * to deal in the Software without restriction, including without limitation
    00014  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00015  * and/or sell copies of the Software, and to permit persons to whom the
    00016  * Software is furnished to do so, subject to the following conditions:
    00017  *
    00018  * The above copyright notice and this permission notice shall be included
    00019  * in all copies or substantial portions of the Software.
    00020  *
    00021  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    00022  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00023  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    00024  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00025  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00026  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00027  * DEALINGS IN THE SOFTWARE.
    00028  ****************************************************************************/
    00029
    00030 #ifndef _OGRWARPEDLAYER_H_INCLUDED
    00031 #define _OGRWARPEDLAYER_H_INCLUDED
    00032
    00033 #include "ogrlayerdecorator.h"
    00034
    00035 /************************************************************************/
    00036 /*                           OGRWarpedLayer                             */
    00037 /************************************************************************/
    00038
    00039 class OGRWarpedLayer : public OGRLayerDecorator
    00040 {
    00041   protected:
    00042       OGRFeatureDefn              *m_poFeatureDefn;
    00043       int                          m_iGeomField;
    00044
    00045       OGRCoordinateTransformation *m_poCT;
    00046       OGRCoordinateTransformation *m_poReversedCT; /* may be NULL */
    00047       OGRSpatialReference         *m_poSRS;
    00048
    00049       OGREnvelope                  sStaticEnvelope;
    00050
    00051       static int ReprojectEnvelope( OGREnvelope* psEnvelope,
    00052                                     OGRCoordinateTransformation* poCT );
    00053
    00054       OGRFeature *                 SrcFeatureToWarpedFeature(OGRFeature* poFeature);
    00055       OGRFeature *                 WarpedFeatureToSrcFeature(OGRFeature* poFeature);
    00056
    00057   public:
    00058
    00059                        OGRWarpedLayer(OGRLayer* poDecoratedLayer,
    00060                                       int iGeomField,
    00061                                       int bTakeOwnership,
    00062                                       OGRCoordinateTransformation* poCT,  /* must NOT be NULL, ownership acquired by OGRWarpedLayer */
    00063                                       OGRCoordinateTransformation* poReversedCT /* may be NULL, ownership acquired by OGRWarpedLayer */);
    00064     virtual           ~OGRWarpedLayer();
    00065
    00066     void                SetExtent(double dfXMin, double dfYMin, double dfXMax, double dfYMax);
    00067
    00068     virtual void        SetSpatialFilter( OGRGeometry * );
    00069     virtual void        SetSpatialFilterRect( double dfMinX, double dfMinY,
    00070                                               double dfMaxX, double dfMaxY );
    00071     virtual void        SetSpatialFilter( int iGeomField, OGRGeometry * );
    00072     virtual void        SetSpatialFilterRect( int iGeomField, double dfMinX, double dfMinY,
    00073                                               double dfMaxX, double dfMaxY );
    00074
    00075     virtual OGRFeature *GetNextFeature();
    00076     virtual OGRFeature *GetFeature( long nFID );
    00077     virtual OGRErr      SetFeature( OGRFeature *poFeature );
    00078     virtual OGRErr      CreateFeature( OGRFeature *poFeature );
    00079
    00080     virtual OGRFeatureDefn *GetLayerDefn();
    00081
    00082     virtual OGRSpatialReference *GetSpatialRef();
    00083
    00084     virtual int         GetFeatureCount( int bForce = TRUE );
    00085     virtual OGRErr      GetExtent(int iGeomField, OGREnvelope *psExtent, int bForce = TRUE);
    00086     virtual OGRErr      GetExtent(OGREnvelope *psExtent, int bForce = TRUE);
    00087
    00088     virtual int         TestCapability( const char * );
    00089 };
    00090
    00091 #endif //  _OGRWARPEDLAYER_H_INCLUDED

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