vtkPVFoamPointFields.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) 2011-2025 OpenFOAM Foundation
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-------------------------------------------------------------------------------
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 vtkPVFoamPointFields_H
#define vtkPVFoamPointFields_H
 
#include "vtkPVFoam.H"
#include "vtkPVFoamReader.h"
#include "vtkOpenFOAMTupleRemap.H"
 
// OpenFOAM includes
#include "domainDecomposition.H"
#include "pointFields.H"
#include "interpolatePointToCell.H"
#include "pointFieldReconstructor.H"
 
// VTK includes
#include "vtkFloatArray.h"
#include "vtkUnstructuredGrid.h"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class Type>
void Foam::vtkPVFoam::convertPointFields
(
    const IOobjectList& objects,
    vtkMultiBlockDataSet* output
)
{
    const polyBoundaryMesh& patches =
        procMeshesPtr_->completeMesh().boundaryMesh();
 
    forAllConstIter(IOobjectList, objects, iter)
    {
        // restrict to this GeometricField<Type, ...>
        if (iter()->headerClassName() != PointField<Type>::typeName)
        {
            continue;
        }
 
        // Load the field
        tmp<PointField<Type>> tptf;
        if (reader_->GetDecomposedCase())
        {
            if (!pointReconstructorPtr_.valid())
            {
                pointReconstructorPtr_.set
                (
                    new pointFieldReconstructor
                    (
                        pointMesh::New(procMeshesPtr_->completeMesh()),
                        procMeshesPtr_->procMeshes(),
                        procMeshesPtr_->procPointAddressing()
                    )
                );
            }
 
            tptf =
                pointReconstructorPtr_
              ->reconstructField<Type>(*iter());
        }
        else
        {
            tptf =
                new PointField<Type>
                (
                    *iter(),
                    pointMesh::New(procMeshesPtr_->completeMesh())
                );
        }
        const PointField<Type>& ptf = tptf();
 
        // Convert activated internalMesh regions
        convertPointFieldBlock
        (
            ptf,
            output,
            arrayRangeVolume_,
            regionPolyDecomp_
        );
 
        // Convert activated cellZones
        convertPointFieldBlock
        (
            ptf,
            output,
            arrayRangeCellZones_,
            zonePolyDecomp_
        );
 
        // Convert activated cellSets
        convertPointFieldBlock
        (
            ptf,
            output,
            arrayRangeCellSets_,
            setPolyDecomp_
        );
 
        // 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 = patches.findIndex(patchName);
 
            if (!partStatus_[partId] || datasetNo < 0 || patchId < 0)
            {
                continue;
            }
 
            convertPatchPointField
            (
                ptf.name(),
                ptf.boundaryField()[patchId].patchInternalField()(),
                output,
                arrayRangePatches_,
                datasetNo
            );
        }
 
        // Convert faceZones - if activated
        for
        (
            int partId = arrayRangeFaceZones_.start();
            partId < arrayRangeFaceZones_.end();
            ++partId
        )
        {
            const word zoneName = getPartName(partId);
            const label datasetNo = partDataset_[partId];
            const label zoneId =
                ptf.mesh().mesh().faceZones().findIndex(zoneName);
 
            if (!partStatus_[partId] || datasetNo < 0 || zoneId < 0)
            {
                continue;
            }
 
            // Extract the field on the zone
            Field<Type> fld
            (
                ptf.primitiveField(),
                ptf.mesh().mesh().faceZones()[zoneId].patch().meshPoints()
            );
 
            convertPatchPointField
            (
                ptf.name(),
                fld,
                output,
                arrayRangeFaceZones_,
                datasetNo
            );
        }
    }
}
 
 
template<class Type>
void Foam::vtkPVFoam::convertPointFieldBlock
(
    const PointField<Type>& ptf,
    vtkMultiBlockDataSet* output,
    const arrayRange& range,
    const List<polyDecomp>& decompLst
)
{
   for (int partId = range.start(); partId < range.end(); ++partId)
   {
       const label datasetNo = partDataset_[partId];
 
       if (datasetNo >= 0 && partStatus_[partId])
       {
           convertPointField
           (
               ptf,
               VolField<Type>::null(),
               output,
               range,
               datasetNo,
               decompLst[datasetNo]
           );
       }
   }
}
 
 
template<class Type>
void Foam::vtkPVFoam::convertPointField
(
    const PointField<Type>& ptf,
    const VolField<Type>& tf,
    vtkMultiBlockDataSet* output,
    const arrayRange& range,
    const label datasetNo,
    const polyDecomp& decomp
)
{
    const label nComp = pTraits<Type>::nComponents;
    const labelList& addPointCellLabels = decomp.addPointCellLabels();
    const labelList& pointMap = decomp.pointMap();
 
    // use a pointMap or address directly into mesh
    label nPoints;
    if (pointMap.size())
    {
        nPoints = pointMap.size();
    }
    else
    {
        nPoints = ptf.size();
    }
 
    vtkFloatArray* pointData = vtkFloatArray::New();
    pointData->SetNumberOfTuples(nPoints + addPointCellLabels.size());
    pointData->SetNumberOfComponents(nComp);
    pointData->Allocate(nComp*(nPoints + addPointCellLabels.size()));
 
    // Note: using the name of the original volField
    // not the name generated by the interpolation "volPointInterpolate(<name>)"
    if (&tf != &VolField<Type>::null())
    {
        pointData->SetName(tf.name().c_str());
    }
    else
    {
        pointData->SetName(ptf.name().c_str());
    }
 
    DebugInFunction
        << "Converting Point field: " << tf.name()
        << " size=" << nPoints << " (" << nPoints + addPointCellLabels.size()
        << "), nComp=" << nComp << endl;
 
    float vec[nComp];
 
    if (pointMap.size())
    {
        forAll(pointMap, i)
        {
            const Type& t = ptf[pointMap[i]];
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
            vtkOpenFOAMTupleRemap<Type>(vec);
 
            pointData->InsertTuple(i, vec);
        }
    }
    else
    {
        forAll(ptf, i)
        {
            const Type& t = ptf[i];
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
            vtkOpenFOAMTupleRemap<Type>(vec);
 
            pointData->InsertTuple(i, vec);
        }
    }
 
    // continue insertion from here
    label i = nPoints;
 
    if (&tf != &VolField<Type>::null())
    {
        forAll(addPointCellLabels, apI)
        {
            const Type& t = tf[addPointCellLabels[apI]];
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
            vtkOpenFOAMTupleRemap<Type>(vec);
 
            pointData->InsertTuple(i++, vec);
        }
    }
    else
    {
        forAll(addPointCellLabels, apI)
        {
            Type t = interpolatePointToCell(ptf, addPointCellLabels[apI]);
            for (direction d=0; d<nComp; ++d)
            {
                vec[d] = component(t, d);
            }
            vtkOpenFOAMTupleRemap<Type>(vec);
 
            pointData->InsertTuple(i++, vec);
        }
    }
 
    vtkUnstructuredGrid::SafeDownCast
    (
        GetDataSetFromBlock(output, range, datasetNo)
    )   ->GetPointData()
        ->AddArray(pointData);
 
    pointData->Delete();
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //