vtkPVFoamSurfaceField.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2026 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
InClass
    vtkPVFoam
 
\*---------------------------------------------------------------------------*/
 
#ifndef vtkPVFoamSurfaceField_H
#define vtkPVFoamSurfaceField_H
 
#include "vtkPVFoam.H"
#include "vtkPVFoamReader.h"
#include "vtkOpenFOAMTupleRemap.H"
 
// OpenFOAM includes
#include "domainDecomposition.H"
#include "faceSet.H"
#include "surfaceFields.H"
#include "fvFieldReconstructor.H"
 
// VTK includes
#include "vtkCellData.h"
#include "vtkFloatArray.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkPolyData.h"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class Type>
void Foam::vtkPVFoam::convertSurfaceField
(
    const VolField<Type>& tf,
    vtkMultiBlockDataSet* output,
    const arrayRange& range,
    const label datasetNo,
    const fvMesh& mesh,
    const labelList& faceLabels
)
{
    const label nComp = pTraits<Type>::nComponents;
    const label nInternalFaces = mesh.nInternalFaces();
    const labelList& faceOwner = mesh.faceOwner();
    const labelList& faceNeigh = mesh.faceNeighbour();
 
    vtkFloatArray* cellData = vtkFloatArray::New();
    cellData->SetNumberOfTuples(faceLabels.size());
    cellData->SetNumberOfComponents(nComp);
    cellData->Allocate(nComp*faceLabels.size());
    cellData->SetName(tf.name().c_str());
 
    DebugInFunction
        << "Converting Surface field: " << tf.name()
        << " size=" << tf.size() << " (" << faceLabels.size()
        << "), nComp=" << nComp << endl;
 
    float vec[nComp];
 
    // For interior faces: average owner/neighbour
    // For boundary faces: owner
    forAll(faceLabels, i)
    {
        const label facei = faceLabels[i];
        if (facei < nInternalFaces)
        {
            const Type t = 0.5*(tf[faceOwner[facei]] + tf[faceNeigh[facei]]);
 
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
        }
        else
        {
            const label patchi = mesh.poly().boundary().whichPatch(facei);
            const label pFacei =
                mesh.poly().boundary()[patchi].whichFace(facei);
            const fvPatchField<Type>& ptf =  tf.boundaryField()[patchi];
 
            const Type& t =
                isType<emptyFvPatchField<Type>>(ptf)
              ? tf[faceOwner[facei]]
              : ptf[pFacei];
 
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
        }
        vtkOpenFOAMTupleRemap<Type>(vec);
 
        cellData->InsertTuple(i, vec);
    }
 
 
    vtkPolyData::SafeDownCast
    (
        GetDataSetFromBlock(output, range, datasetNo)
    )   ->GetCellData()
        ->AddArray(cellData);
 
    cellData->Delete();
}
 
 
template<class Type>
void Foam::vtkPVFoam::convertSurfaceField
(
    const SurfaceField<Type>& tf,
    vtkMultiBlockDataSet* output,
    const arrayRange& range,
    const label datasetNo,
    const fvMesh& mesh,
    const labelList& faceLabels
)
{
    const label nComp = pTraits<Type>::nComponents;
    const label nInternalFaces = mesh.nInternalFaces();
 
    vtkFloatArray* cellData = vtkFloatArray::New();
    cellData->SetNumberOfTuples(faceLabels.size());
    cellData->SetNumberOfComponents(nComp);
    cellData->Allocate(nComp*faceLabels.size());
    cellData->SetName(tf.name().c_str());
 
    DebugInFunction
        << "Converting Surface field: " << tf.name()
        << " size=" << tf.size() << " (" << faceLabels.size()
        << "), nComp=" << nComp << endl;
 
    // To avoid whichPatch first flatten the field
    Field<Type> flatFld(mesh.nFaces(), Zero);
    SubField<Type>(flatFld, nInternalFaces) = tf.internalField();
    forAll(tf.boundaryField(), patchi)
    {
        const fvsPatchField<Type>& ptf = tf.boundaryField()[patchi];
 
        forAll(ptf, patchFacei)
        {
            const label facei = mesh.polyFacesBf()[patchi][patchFacei];
            const scalar fraction =
                mesh.magSf().boundaryField()[patchi][patchFacei]
               /mesh.magFaceAreas()[facei];
 
            flatFld[facei] += fraction*ptf[patchFacei];
        }
    }
 
    forAll(faceLabels, i)
    {
        const label facei = faceLabels[i];
 
        float vec[nComp];
        for (direction d=0; d<nComp; ++d)
        {
            vec[d] = component(flatFld[facei], d);
        }
        vtkOpenFOAMTupleRemap<Type>(vec);
 
        cellData->InsertTuple(i, vec);
    }
 
    vtkPolyData::SafeDownCast
    (
        GetDataSetFromBlock(output, range, datasetNo)
    )   ->GetCellData()
        ->AddArray(cellData);
 
    cellData->Delete();
}
 
 
template<class Type>
void Foam::vtkPVFoam::convertSurfaceFields
(
    const IOobjectList& objects,
    vtkMultiBlockDataSet* output
)
{
    forAllConstIter(IOobjectList, objects, iter)
    {
        // Restrict to GeometricField<Type, ...>
        if (iter()->headerClassName() != SurfaceField<Type>::typeName)
        {
            continue;
        }
 
        // Load the field
        tmp<SurfaceField<Type>> ttf;
 
        FatalIOError.throwExceptions();
 
        try
        {
            if (reader_->GetDecomposedCase())
            {
                if (!fvReconstructorPtr_.valid())
                {
                    fvReconstructorPtr_.set
                    (
                        new fvFieldReconstructor
                        (
                            procMeshesPtr_->completeMesh(),
                            procMeshesPtr_->procMeshes(),
                            procMeshesPtr_->procFaceAddressing(),
                            procMeshesPtr_->procCellAddressing(),
                            procMeshesPtr_->procFaceAddressingBf()
                        )
                    );
                }
 
                ttf =
                    fvReconstructorPtr_
                  ->reconstructFvSurfaceField<Type>(*iter());
            }
            else
            {
                ttf =
                    new SurfaceField<Type>
                    (
                        *iter(),
                        procMeshesPtr_->completeMesh()
                    );
            }
        }
        catch (IOerror& err)
        {
            Warning<< err << endl;
            continue;
        }
 
        FatalIOError.dontThrowExceptions();
 
        const SurfaceField<Type>& tf = ttf();
        const fvMesh& mesh = tf.mesh()();
 
        // Convert patches - if activated
        for
        (
            int partId = arrayRangePatches_.start();
            partId < arrayRangePatches_.end();
            ++partId
        )
        {
            const word patchName = getPartName(partId);
            const label datasetNo = partDataset_[partId];
            const label patchId = mesh.poly().boundary().findIndex(patchName);
 
            if (!partStatus_[partId] || datasetNo < 0 || patchId < 0)
            {
                continue;
            }
 
            const fvsPatchField<Type>& ptf = tf.boundaryField()[patchId];
 
            if (!isType<emptyFvsPatchField<Type>>(ptf))
            {
                convertPatchField
                (
                    tf.name(),
                    ptf,
                    output,
                    arrayRangePatches_,
                    datasetNo
                );
            }
        }
 
        // Convert face zones - if activated
        for
        (
            int partId = arrayRangeFaceZones_.start();
            partId < arrayRangeFaceZones_.end();
            ++partId
        )
        {
            const word zoneName = getPartName(partId);
            const label datasetNo = partDataset_[partId];
 
            if (!partStatus_[partId] || datasetNo < 0)
            {
                continue;
            }
 
            const faceZoneList& zMesh = mesh.faceZones();
            const label zoneId = zMesh.findIndex(zoneName);
 
            if (zoneId < 0)
            {
                continue;
            }
 
            convertSurfaceField
            (
                tf,
                output,
                arrayRangeFaceZones_,
                datasetNo,
                mesh,
                zMesh[zoneId]
            );
        }
 
        // Convert face sets - if activated
        for
        (
            int partId = arrayRangeFaceSets_.start();
            partId < arrayRangeFaceSets_.end();
            ++partId
        )
        {
            const word selectName = getPartName(partId);
            const label datasetNo = partDataset_[partId];
 
            if (!partStatus_[partId] || datasetNo < 0)
            {
                continue;
            }
 
            const autoPtr<faceSet> fSetPtr =
                reader_->GetDecomposedCase()
              ? procMeshesPtr_->reconstructSet<faceSet>(selectName)
              : autoPtr<faceSet>(new faceSet(mesh, selectName));
 
            convertSurfaceField
            (
                tf,
                output,
                arrayRangeFaceSets_,
                datasetNo,
                mesh,
                fSetPtr().toc()
            );
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //