# ogrwarpedlayer.h

    00001 /******************************************************************************
    00002  * $Id: ogrwarpedlayer.h 24633 2012-07-01 14:37:25Z 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, Even Rouault <even dot rouault at mines dash 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       OGRCoordinateTransformation *m_poCT;
    00043       OGRCoordinateTransformation *m_poReversedCT; /* may be NULL */
    00044       OGRSpatialReference         *m_poSRS;
    00045
    00046       OGREnvelope                  sStaticEnvelope;
    00047
    00048       static int ReprojectEnvelope( OGREnvelope* psEnvelope,
    00049                                     OGRCoordinateTransformation* poCT );
    00050
    00051   public:
    00052
    00053                        OGRWarpedLayer(OGRLayer* poDecoratedLayer,
    00054                                       int bTakeOwnership,
    00055                                       OGRCoordinateTransformation* poCT,  /* must NOT be NULL, ownership acquired by OGRWarpedLayer */
    00056                                       OGRCoordinateTransformation* poReversedCT /* may be NULL, ownership acquired by OGRWarpedLayer */);
    00057     virtual           ~OGRWarpedLayer();
    00058
    00059     void                SetExtent(double dfXMin, double dfYMin, double dfXMax, double dfYMax);
    00060
    00061     virtual void        SetSpatialFilter( OGRGeometry * );
    00062     virtual void        SetSpatialFilterRect( double dfMinX, double dfMinY,
    00063                                               double dfMaxX, double dfMaxY );
    00064
    00065     virtual OGRFeature *GetNextFeature();
    00066     virtual OGRFeature *GetFeature( long nFID );
    00067     virtual OGRErr      SetFeature( OGRFeature *poFeature );
    00068     virtual OGRErr      CreateFeature( OGRFeature *poFeature );
    00069
    00070     virtual OGRSpatialReference *GetSpatialRef();
    00071
    00072     virtual int         GetFeatureCount( int bForce = TRUE );
    00073     virtual OGRErr      GetExtent(OGREnvelope *psExtent, int bForce = TRUE);
    00074
    00075     virtual int         TestCapability( const char * );
    00076 };
    00077
    00078 #endif //  _OGRWARPEDLAYER_H_INCLUDED

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