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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