foamVtkVtuAdaptorI.H

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License
    This file is part of OpenFOAM.
 
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// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
inline vtkSmartPointer<vtkPoints>
Foam::vtk::vtuAdaptor::NewPoints
(
    vtkIdType count
) const
{
    auto vtkpoints = vtkSmartPointer<vtkPoints>::New();
    // if (narrowing || (sizeof(float) == sizeof(Foam::scalar)))
    // {
    //     vtkpoints->SetDataTypeToFloat();
    // }
    // else
    // {
    //     vtkpoints->SetDataTypeToDouble();
    // }
    vtkpoints->SetNumberOfPoints(count);
 
    return vtkpoints;
}
 
 
inline vtkSmartPointer<vtkPoints>
Foam::vtk::vtuAdaptor::points
(
    const polyMesh& mesh
) const
{
    // Convert OpenFOAM mesh vertices to VTK
 
    // Combine mesh points and any additional cellCentre points
    // into a single field
 
    const auto& pts = mesh.points();
    const auto& cc = mesh.cellCentres();
 
    // The additional cellCentre points
    const labelUList& addPoints = this->additionalIds();
 
    auto vtkpoints = NewPoints(pts.size() + addPoints.size());
 
    // Normal points
    vtkIdType pointId = 0;
    for (const point& p : pts)
    {
        vtkpoints->SetPoint(pointId++, p.cdata());
    }
 
    // Cell centres
    for (const label celli : addPoints)
    {
        const auto& p = cc[celli];
        vtkpoints->SetPoint(pointId++, p.cdata());
    }
 
    return vtkpoints;
}
 
 
inline vtkSmartPointer<vtkPoints>
Foam::vtk::vtuAdaptor::points
(
    const polyMesh& mesh,
    const labelUList& pointMap
) const
{
    // Convert OpenFOAM mesh vertices to VTK
 
    // Combine mapped points and additional cellCentre points
    // into a single field
 
    const auto& pts = mesh.points();
    const auto& cc = mesh.cellCentres();
 
    // The additional cellCentre points
    const labelUList& addPoints = this->additionalIds();
 
    auto vtkpoints = NewPoints(pointMap.size() + addPoints.size());
 
    // Normal points
    vtkIdType pointId = 0;
    for (const label pointi : pointMap)
    {
        const auto& p = pts[pointi];
        vtkpoints->SetPoint(pointId++, p.cdata());
    }
 
    // Cell centres
    for (const label celli : addPoints)
    {
        const auto& p = cc[celli];
        vtkpoints->SetPoint(pointId++, p.cdata());
    }
 
    return vtkpoints;
}
 
 
inline vtkSmartPointer<vtkUnstructuredGrid>
Foam::vtk::vtuAdaptor::internal
(
    const fvMesh& mesh,
    const bool decompPoly
)
{
    const vtk::vtuSizing::contentType output
    (
        #ifdef VTK_CELL_ARRAY_V2
        vtk::vtuSizing::contentType::INTERNAL2
        #else
        vtk::vtuSizing::contentType::INTERNAL1
        #endif
    );
 
    vtk::vtuSizing sizing(mesh, decompPoly);
 
    auto vtkmesh = vtkSmartPointer<vtkUnstructuredGrid>::New();
 
    auto cellTypes = vtkSmartPointer<vtkUnsignedCharArray>::New();
 
    UList<uint8_t> cellTypesUL
    (
        vtk::Tools::asUList(cellTypes, sizing.nFieldCells())
    );
 
    auto cells = vtkSmartPointer<vtkCellArray>::New();
    auto faces = vtkSmartPointer<vtkIdTypeArray>::New();
 
    auto cellOffsets   = vtkSmartPointer<vtkIdTypeArray>::New();
    auto faceLocations = vtkSmartPointer<vtkIdTypeArray>::New();
 
    const auto nConnect
    (
        sizing.sizeOf(output, vtk::vtuSizing::slotType::CELLS)
    );
 
    UList<vtkIdType> cellOffsetsUL
    (
        vtk::Tools::asUList
        (
            cellOffsets,
            sizing.sizeOf(output, vtk::vtuSizing::slotType::CELLS_OFFSETS)
        )
    );
 
    #ifdef VTK_CELL_ARRAY_V2
 
    auto cellConnect = vtkSmartPointer<vtkIdTypeArray>::New();
 
    UList<vtkIdType> cellsUL
    (
        vtk::Tools::asUList(cellConnect, nConnect)
    );
 
    #else
 
    cells->GetData()->SetNumberOfTuples(sizing.nFieldCells());
 
    UList<vtkIdType> cellsUL
    (
        cells->WritePointer(sizing.nFieldCells(), nConnect),
        nConnect
    );
 
    #endif
 
    UList<vtkIdType> facesUL
    (
        vtk::Tools::asUList
        (
            faces,
            sizing.sizeOf(output, vtk::vtuSizing::slotType::FACES)
        )
    );
 
    UList<vtkIdType> faceLocationsUL
    (
        vtk::Tools::asUList
        (
            faceLocations,
            sizing.sizeOf(output, vtk::vtuSizing::slotType::FACES_OFFSETS)
        )
    );
 
 
    sizing.populateInternal
    (
        mesh,
        cellTypesUL,
        cellsUL, cellOffsetsUL,
        facesUL, faceLocationsUL,
        static_cast<foamVtkMeshMaps&>(*this),
        output
    );
 
 
    // Convert OpenFOAM mesh vertices to VTK
    // - can only do this *after* populating the decompInfo with cell-ids
    //   for any additional points (ie, mesh cell-centres)
    vtkmesh->SetPoints(this->points(mesh));
 
    #ifdef VTK_CELL_ARRAY_V2
 
    // Move into a vtkCellArray
    cells->SetData(cellOffsets, cellConnect);
 
    // FUTURE: after VTK-9.4.0
    //   (VTK_MAJOR_VERSION >= 9) && (VTK_NINOR_VERSION >= 4)
    //   SetPolyhedralCells()
 
    if (facesUL.size())
    {
        vtkmesh->SetCells(cellTypes, cells, faceLocations, faces);
    }
    else
    {
        vtkmesh->SetCells(cellTypes, cells, nullptr, nullptr);
    }
    #else
 
    if (facesUL.size())
    {
        vtkmesh->SetCells(cellTypes, cellOffsets, cells, faceLocations, faces);
    }
    else
    {
        vtkmesh->SetCells(cellTypes, cellOffsets, cells, nullptr, nullptr);
    }
 
    #endif
 
    return vtkmesh;
}
 
 
// ************************************************************************* //