Esempi in C++ (Cpp) per GetNextUnfilteredFeature

Esempio n. 1

File: ogrpcidsklayer.cpp Progetto: AbdelghaniDr/mirror

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;
}

Esempio n. 2

File: ogrs57layer.cpp Progetto: samalone/gdal-ios

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;
}

Esempio n. 3

File: ogrdwgblockslayer.cpp Progetto: 0004c/node-gdal

OGRFeature *OGRDWGBlocksLayer::GetNextFeature()

{
    while( TRUE )
    {
        OGRFeature *poFeature = GetNextUnfilteredFeature();

        if( poFeature == NULL )
            return NULL;

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

        delete poFeature;
    }
}

Esempio n. 4

File: ogrdxfblockslayer.cpp Progetto: ksshannon/gdal

OGRFeature *OGRDXFBlocksLayer::GetNextFeature()

{
    while( true )
    {
        OGRFeature *poFeature = GetNextUnfilteredFeature();

        if( poFeature == nullptr )
            return nullptr;

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

        delete poFeature;
    }
}

Esempio n. 5

File: ogrreclayer.cpp Progetto: ryandavid/rotobox

OGRFeature *OGRRECLayer::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_poAttrQuery == NULL || m_poAttrQuery->Evaluate( poFeature ) )
            break;

        delete poFeature;
    }

    return poFeature;
}