当前位置: 首页>>代码示例>>C++>>正文

C++ OGRFeature::GetGeometryRef方法代码示例

本文整理汇总了C++中OGRFeature::GetGeometryRef方法的典型用法代码示例。如果您正苦于以下问题：C++ OGRFeature::GetGeometryRef方法的具体用法？C++ OGRFeature::GetGeometryRef怎么用？C++ OGRFeature::GetGeometryRef使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类OGRFeature的用法示例。


在下文中一共展示了OGRFeature::GetGeometryRef方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: while

OGRFeature *OGRGMELayer::GetNextFeature()
{
    OGRFeature *poFeature = NULL;
    
    while( TRUE )
    {
        poFeature = GetNextRawFeature();
        if( poFeature == NULL )
            break;

        // incremeted in GetNextRawFeature()
        // m_nFeaturesRead++;

        if( (m_poFilterGeom == NULL
             || poFeature->GetGeometryRef() == NULL 
             || FilterGeometry( poFeature->GetGeometryRef() ) )
            && (m_poAttrQuery == NULL
                || m_poAttrQuery->Evaluate( poFeature )) )
            break;

        delete poFeature;
    }

    return poFeature;
}
开发者ID:samalone，项目名称:gdal-ios，代码行数:25，代码来源:ogrgmelayer.cpp

示例2: GetNextFeature

OGRFeature* OGRGeoJSONLayer::GetNextFeature()
{
    while ( iterCurrent_ != seqFeatures_.end() )
    {
        OGRFeature* poFeature = (*iterCurrent_);
        CPLAssert( NULL != poFeature );
        ++iterCurrent_;
        
        if((m_poFilterGeom == NULL
            || FilterGeometry( poFeature->GetGeometryRef() ) )
        && (m_poAttrQuery == NULL
            || m_poAttrQuery->Evaluate( poFeature )) )
        {
            OGRFeature* poFeatureCopy = poFeature->Clone();
            CPLAssert( NULL != poFeatureCopy );

            if (poFeatureCopy->GetGeometryRef() != NULL && GetSpatialRef() != NULL)
            {
                poFeatureCopy->GetGeometryRef()->assignSpatialReference( GetSpatialRef() );
            }

            return poFeatureCopy;
        }
    }

    return NULL;
}
开发者ID:0004c，项目名称:node-gdal，代码行数:27，代码来源:ogrgeojsonlayer.cpp

示例3: if

/**********************************************************************
 *                   IMapInfoFile::GetNextFeature()
 *
 * Standard OGR GetNextFeature implementation.  This method is used
 * to retrieve the next OGRFeature.
 **********************************************************************/
OGRFeature *IMapInfoFile::GetNextFeature()
{
    OGRFeature *poFeatureRef;
    OGRGeometry *poGeom;
    GIntBig nFeatureId;

    while( (nFeatureId = GetNextFeatureId(m_nCurFeatureId)) != -1 )
    {
        poFeatureRef = GetFeatureRef(nFeatureId);
        if (poFeatureRef == NULL)
            return NULL;
        else if( (m_poFilterGeom == NULL ||
                  ((poGeom = poFeatureRef->GetGeometryRef()) != NULL &&
                   FilterGeometry( poGeom )))
                 && (m_poAttrQuery == NULL
                     || m_poAttrQuery->Evaluate( poFeatureRef )) )
        {
            // Avoid cloning feature... return the copy owned by the class
            CPLAssert(poFeatureRef == m_poCurFeature);
            m_poCurFeature = NULL;
            if( poFeatureRef->GetGeometryRef() != NULL )
                poFeatureRef->GetGeometryRef()->assignSpatialReference(GetSpatialRef());
            return poFeatureRef;
        }
    }
    return NULL;
}
开发者ID:nextgis-borsch，项目名称:lib_gdal，代码行数:33，代码来源:mitab_imapinfofile.cpp

示例4: GetNextFeature

OGRFeature* GTMWaypointLayer::GetNextFeature()
{
    if( bError )
        return nullptr;

    while (poDS->hasNextWaypoint())
    {
        Waypoint* poWaypoint = poDS->fetchNextWaypoint();
        if (poWaypoint == nullptr)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Could not read waypoint. File probably corrupted");
            bError = true;
            return nullptr;
        }

        OGRFeature* poFeature = new OGRFeature( poFeatureDefn );
        double altitude = poWaypoint->getAltitude();
        if (altitude == 0.0)
            poFeature->SetGeometryDirectly(new OGRPoint
                                           (poWaypoint->getLongitude(),
                                            poWaypoint->getLatitude()));
        else
            poFeature->SetGeometryDirectly(new OGRPoint
                                           (poWaypoint->getLongitude(),
                                            poWaypoint->getLatitude(),
                                            altitude));

        if (poSRS)
            poFeature->GetGeometryRef()->assignSpatialReference(poSRS);
        poFeature->SetField( NAME, poWaypoint->getName());
        poFeature->SetField( COMMENT, poWaypoint->getComment());
        poFeature->SetField( ICON, poWaypoint->getIcon());

        GIntBig wptdate = poWaypoint->getDate();
        if (wptdate != 0)
        {
            struct tm brokendownTime;
            CPLUnixTimeToYMDHMS(wptdate, &brokendownTime);
            poFeature->SetField( DATE,
                                 brokendownTime.tm_year + 1900,
                                 brokendownTime.tm_mon + 1,
                                 brokendownTime.tm_mday,
                                 brokendownTime.tm_hour,
                                 brokendownTime.tm_min,
                                 static_cast<float>(brokendownTime.tm_sec));
        }

        poFeature->SetFID( nNextFID++ );
        delete poWaypoint;
        if( (m_poFilterGeom == nullptr
             || FilterGeometry( poFeature->GetGeometryRef() ) )
            && (m_poAttrQuery == nullptr
                || m_poAttrQuery->Evaluate( poFeature )) )
            return poFeature;

        delete poFeature;
    }
    return nullptr;
}
开发者ID:koordinates，项目名称:gdal，代码行数:60，代码来源:gtmwaypointlayer.cpp

示例5: while

OGRFeature *OGRKMLLayer::GetNextFeature()
{
#ifndef HAVE_EXPAT
    return NULL;
#else
    /* -------------------------------------------------------------------- */
    /*      Loop till we find a feature matching our criteria.              */
    /* -------------------------------------------------------------------- */
    KML *poKMLFile = poDS_->GetKMLFile();
    if( poKMLFile == NULL )
        return NULL;
    poKMLFile->selectLayer(nLayerNumber_);

    while( true )
    {
        Feature *poFeatureKML = NULL;
        poFeatureKML = poKMLFile->getFeature(iNextKMLId_++, nLastAsked, nLastCount);

        if(poFeatureKML == NULL)
            return NULL;

        CPLAssert( poFeatureKML != NULL );

        OGRFeature *poFeature = new OGRFeature( poFeatureDefn_ );

        if(poFeatureKML->poGeom)
        {
            poFeature->SetGeometryDirectly(poFeatureKML->poGeom);
            poFeatureKML->poGeom = NULL;
        }

        // Add fields
        poFeature->SetField( poFeatureDefn_->GetFieldIndex("Name"), poFeatureKML->sName.c_str() );
        poFeature->SetField( poFeatureDefn_->GetFieldIndex("Description"), poFeatureKML->sDescription.c_str() );
        poFeature->SetFID( iNextKMLId_ - 1 );

        // Clean up
        delete poFeatureKML;

        if( poFeature->GetGeometryRef() != NULL && poSRS_ != NULL)
        {
            poFeature->GetGeometryRef()->assignSpatialReference( poSRS_ );
        }

        /* Check spatial/attribute filters */
        if ((m_poFilterGeom == NULL || FilterGeometry( poFeature->GetGeometryRef() ) ) &&
            (m_poAttrQuery == NULL || m_poAttrQuery->Evaluate( poFeature )) )
        {
        // Return the feature
            return poFeature;
        }
        else
        {
            delete poFeature;
        }
    }

#endif /* HAVE_EXPAT */
}
开发者ID:Wedjaa，项目名称:node-gdal，代码行数:59，代码来源:ogrkmllayer.cpp

示例6: OGR2SQLITE_ogr_geocode_set_result

static
void OGR2SQLITE_ogr_geocode_set_result(sqlite3_context* pContext,
                                       OGRLayerH hLayer,
                                       const char* pszField)
{
    if( hLayer == NULL )
        sqlite3_result_null (pContext);
    else
    {
        OGRLayer* poLayer = (OGRLayer*)hLayer;
        OGRFeatureDefn* poFDefn = poLayer->GetLayerDefn();
        OGRFeature* poFeature = poLayer->GetNextFeature();
        int nIdx = -1;
        if( poFeature == NULL )
            sqlite3_result_null (pContext);
        else if( strcmp(pszField, "geometry") == 0 &&
                 poFeature->GetGeometryRef() != NULL )
        {
            GByte* pabyGeomBLOB = NULL;
            int nGeomBLOBLen = 0;
            if( OGRSQLiteLayer::ExportSpatiaLiteGeometry(
                        poFeature->GetGeometryRef(), 4326, wkbNDR, FALSE, FALSE, FALSE,
                        &pabyGeomBLOB,
                        &nGeomBLOBLen ) != CE_None )
            {
                sqlite3_result_null (pContext);
            }
            else
            {
                sqlite3_result_blob (pContext, pabyGeomBLOB, nGeomBLOBLen, CPLFree);
            }
        }
        else if( (nIdx = poFDefn->GetFieldIndex(pszField)) >= 0 &&
                 poFeature->IsFieldSet(nIdx) )
        {
            OGRFieldType eType = poFDefn->GetFieldDefn(nIdx)->GetType();
            if( eType == OFTInteger )
                sqlite3_result_int(pContext,
                                   poFeature->GetFieldAsInteger(nIdx));
            else if( eType == OFTInteger64 )
                sqlite3_result_int64(pContext,
                                     poFeature->GetFieldAsInteger64(nIdx));
            else if( eType == OFTReal )
                sqlite3_result_double(pContext,
                                      poFeature->GetFieldAsDouble(nIdx));
            else
                sqlite3_result_text(pContext,
                                    poFeature->GetFieldAsString(nIdx),
                                    -1, SQLITE_TRANSIENT);
        }
        else
            sqlite3_result_null (pContext);
        delete poFeature;
        OGRGeocodeFreeResult(hLayer);
    }
}
开发者ID:rashadkm，项目名称:lib_gdal，代码行数:56，代码来源:ogrsqlitesqlfunctions.cpp

示例7: GetNextUnfilteredFeature

OGRFeature *OGRS57Layer::GetNextUnfilteredFeature()

{
    OGRFeature  *poFeature = NULL;
    
/* -------------------------------------------------------------------- */
/*      Are we out of modules to request features from?                 */
/* -------------------------------------------------------------------- */
    if( nCurrentModule >= poDS->GetModuleCount() )
        return NULL;

/* -------------------------------------------------------------------- */
/*      Set the current position on the current module and fetch a      */
/*      feature.                                                        */
/* -------------------------------------------------------------------- */
    S57Reader   *poReader = poDS->GetModule(nCurrentModule);
    
    if( poReader != NULL )
    {
        poReader->SetNextFEIndex( nNextFEIndex, nRCNM );
        poFeature = poReader->ReadNextFeature( poFeatureDefn );
        nNextFEIndex = poReader->GetNextFEIndex( nRCNM );
    }

/* -------------------------------------------------------------------- */
/*      If we didn't get a feature we need to move onto the next file.  */
/* -------------------------------------------------------------------- */
    if( poFeature == NULL )
    {
        nCurrentModule++;
        poReader = poDS->GetModule(nCurrentModule);

        if( poReader != NULL && poReader->GetModule() == NULL )
        {
            if( !poReader->Open( FALSE ) )
                return NULL;
        }

        return GetNextUnfilteredFeature();
    }
    else
    {
        m_nFeaturesRead++;
        if( poFeature->GetGeometryRef() != NULL )
            poFeature->GetGeometryRef()->assignSpatialReference(
                GetSpatialRef() );
    }
    
    return poFeature;
}
开发者ID:samalone，项目名称:gdal-ios，代码行数:50，代码来源:ogrs57layer.cpp

示例8: 

OGRFeature *OGRTigerLayer::GetFeature( GIntBig nFeatureId )

{
    if( nFeatureId < 1 || nFeatureId > nFeatureCount )
        return NULL;

/* -------------------------------------------------------------------- */
/*      If we don't have the current module open for the requested      */
/*      data, then open it now.                                         */
/* -------------------------------------------------------------------- */
    if( iLastModule == -1
        || nFeatureId <= panModuleOffset[iLastModule]
        || nFeatureId > panModuleOffset[iLastModule+1] )
    {
        for( iLastModule = 0;
             iLastModule < poDS->GetModuleCount()
                 && nFeatureId > panModuleOffset[iLastModule+1];
             iLastModule++ ) {}

        if( !poReader->SetModule( poDS->GetModule(iLastModule) ) )
        {
            return NULL;
        }
    }

/* -------------------------------------------------------------------- */
/*      Fetch the feature associated with the record.                   */
/* -------------------------------------------------------------------- */
    OGRFeature  *poFeature;

    poFeature =
        poReader->GetFeature( (int)nFeatureId-panModuleOffset[iLastModule]-1 );

    if( poFeature != NULL )
    {
        poFeature->SetFID( nFeatureId );

        if( poFeature->GetGeometryRef() != NULL )
            poFeature->GetGeometryRef()->assignSpatialReference(
                poDS->GetSpatialRef() );

        poFeature->SetField( 0, poReader->GetShortModule() );

        m_nFeaturesRead++;
    }

    return poFeature;
}
开发者ID:Wedjaa，项目名称:node-gdal，代码行数:48，代码来源:ogrtigerlayer.cpp

示例9: GetLayerDefn

OGRFeature *OGRGFTLayer::GetNextFeature()
{
    GetLayerDefn();

    while( true )
    {
        if (nNextInSeq < nOffset ||
            nNextInSeq >= nOffset + static_cast<int>(aosRows.size()))
        {
            if (bEOF)
                return nullptr;

            nOffset += static_cast<int>(aosRows.size());
            if (!FetchNextRows())
                return nullptr;
        }

        OGRFeature *poFeature = GetNextRawFeature();
        if (poFeature == nullptr)
            return nullptr;

        if((m_poFilterGeom == nullptr
            || FilterGeometry( poFeature->GetGeometryRef() ) )
        && (m_poAttrQuery == nullptr
            || m_poAttrQuery->Evaluate( poFeature )) )
        {
            return poFeature;
        }
        else
            delete poFeature;
    }
}
开发者ID:koordinates，项目名称:gdal，代码行数:32，代码来源:ogrgftlayer.cpp

示例10: GetLayerDefn

OGRFeature *OGRGFTLayer::GetNextFeature()
{
    OGRFeature  *poFeature;

    GetLayerDefn();

    while(TRUE)
    {
        if (nNextInSeq < nOffset ||
            nNextInSeq >= nOffset + (int)aosRows.size())
        {
            if (bEOF)
                return NULL;

            nOffset += aosRows.size();
            if (!FetchNextRows())
                return NULL;
        }

        poFeature = GetNextRawFeature();
        if (poFeature == NULL)
            return NULL;

        if((m_poFilterGeom == NULL
            || FilterGeometry( poFeature->GetGeometryRef() ) )
        && (m_poAttrQuery == NULL
            || m_poAttrQuery->Evaluate( poFeature )) )
        {
            return poFeature;
        }
        else
            delete poFeature;
    }
}
开发者ID:samalone，项目名称:gdal-ios，代码行数:34，代码来源:ogrgftlayer.cpp

示例11: run

void GDALParceling::run()
{
	DM::GDALSystem * city = this->getGDALData("city");

	cityblocks.setCurrentGDALSystem(city);
	parcels.setCurrentGDALSystem(city);

	cityblocks.resetReading();
	OGRFeature *poFeature;
	int counter = 0;
	while( (poFeature = cityblocks.getNextFeature()) != NULL ) {
		counter++;
		char* geo;

		poFeature->GetGeometryRef()->exportToWkt(&geo);
		std::auto_ptr<  SFCGAL::Geometry > g( SFCGAL::io::readWkt(geo));

		switch ( g->geometryTypeId() ) {
		case SFCGAL::TYPE_POLYGON:
			break;
		default:
			continue;
		}
		SFCGAL::Polygon poly = g->as<SFCGAL::Polygon>();

		//Transfer to GDAL polygon
		Polygon_with_holes_2 p = poly.toPolygon_with_holes_2(true);
		splitePoly(p);
	}
	parcels.syncAlteredFeatures();
	DM::Logger(DM::Debug) << this->counter_added;
}
开发者ID:christianurich，项目名称:DynaMind-GDALModules，代码行数:32，代码来源:parceling.cpp

示例12: ResetReading

OGRFeature *OGROGDILayer::GetNextFeature()

{
    OGRFeature  *poFeature;

    /* Reset reading if we are not the current layer */
    /* WARNING : this does not allow interleaved reading of layers */
    if( m_poODS->GetCurrentLayer() != this )
    {
        m_poODS->SetCurrentLayer(this);
        ResetReading();
    }

    while( true )
    {
        poFeature = GetNextRawFeature();
        if( poFeature == NULL )
            return NULL;

    /* -------------------------------------------------------------------- */
    /*      Do we need to apply an attribute test?                          */
    /* -------------------------------------------------------------------- */
        if( (m_poAttrQuery != NULL
            && !m_poAttrQuery->Evaluate( poFeature ) )
            || (m_poFilterGeom != NULL
                && !FilterGeometry( poFeature->GetGeometryRef() ) ) )
        {
            m_nFilteredOutShapes ++;
            delete poFeature;
        }
        else
            return poFeature;
    }
}
开发者ID:Wedjaa，项目名称:node-gdal，代码行数:34，代码来源:ogrogdilayer.cpp

示例13: while

OGRFeature *OGRHTFLayer::GetNextFeature()
{
    OGRFeature  *poFeature;

    if (fpHTF == NULL || bEOF)
        return NULL;

    while(!bEOF)
    {
        poFeature = GetNextRawFeature();
        if (poFeature == NULL)
            return NULL;

        if((m_poFilterGeom == NULL
            || FilterGeometry( poFeature->GetGeometryRef() ) )
        && (m_poAttrQuery == NULL
            || m_poAttrQuery->Evaluate( poFeature )) )
        {
            return poFeature;
        }
        else
            delete poFeature;
    }

    return NULL;
}
开发者ID:AsherBond，项目名称:MondocosmOS，代码行数:26，代码来源:ogrhtflayer.cpp

示例14: while

OGRFeature *OGRPCIDSKLayer::GetNextFeature()

{
    OGRFeature  *poFeature = NULL;

/* -------------------------------------------------------------------- */
/*      Read features till we find one that satisfies our current       */
/*      spatial criteria.                                               */
/* -------------------------------------------------------------------- */
    while( TRUE )
    {
        poFeature = GetNextUnfilteredFeature();
        if( poFeature == NULL )
            break;

        if( (m_poFilterGeom == NULL
            || FilterGeometry( poFeature->GetGeometryRef() ) )
            && (m_poAttrQuery == NULL
                || m_poAttrQuery->Evaluate( poFeature )) )
            break;

        delete poFeature;
    }

    return poFeature;
}
开发者ID:AbdelghaniDr，项目名称:mirror，代码行数:26，代码来源:ogrpcidsklayer.cpp

示例15: while

OGRFeature *OGRTigerLayer::GetNextFeature()

{
/* -------------------------------------------------------------------- */
/*      Read features till we find one that satisfies our current       */
/*      spatial criteria.                                               */
/* -------------------------------------------------------------------- */
    while( iLastFeatureId < nFeatureCount )
    {
        OGRFeature      *poFeature = GetFeature( ++iLastFeatureId );

        if( poFeature == NULL )
            break;

        if( (m_poFilterGeom == NULL
             || FilterGeometry( poFeature->GetGeometryRef() ) )
            && (m_poAttrQuery == NULL
                || m_poAttrQuery->Evaluate( poFeature )) )
            return poFeature;

        delete poFeature;
    }

    return NULL;
}
开发者ID:Wedjaa，项目名称:node-gdal，代码行数:25，代码来源:ogrtigerlayer.cpp


注：本文中的OGRFeature::GetGeometryRef方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。