cellToFaceStencil.C

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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2018 OpenCFD Ltd.
-------------------------------------------------------------------------------
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
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#include "cellToFaceStencil.H"
#include "SortableList.H"
#include "emptyPolyPatch.H"
#include "syncTools.H"
#include "dummyTransform.H"
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
void Foam::cellToFaceStencil::merge
(
    const label global0,
    const label global1,
    const labelList& listA,
    labelList& listB
)
{
    sort(listB);
 
    // See if global0, global1 already present in listB
    label nGlobalInsert = 0;
 
    if (global0 != -1)
    {
        label index0 = findSortedIndex(listB, global0);
        if (index0 == -1)
        {
            nGlobalInsert++;
        }
    }
 
    if (global1 != -1)
    {
        label index1 = findSortedIndex(listB, global1);
        if (index1 == -1)
        {
            nGlobalInsert++;
        }
    }
 
 
    // For all in listA see if they are present
    label nInsert = 0;
 
    for (const label elem : listA)
    {
        if (elem != global0 && elem != global1)
        {
            if (findSortedIndex(listB, elem) == -1)
            {
                nInsert++;
            }
        }
    }
 
    // Extend B with nInsert and whether global0,global1 need to be inserted.
    labelList result(listB.size() + nGlobalInsert + nInsert);
 
    label resultI = 0;
 
    // Insert global0,1 first
    if (global0 != -1)
    {
        result[resultI++] = global0;
    }
    if (global1 != -1)
    {
        result[resultI++] = global1;
    }
 
 
    // Insert listB
    for (const label elem : listB)
    {
        if (elem != global0 && elem != global1)
        {
            result[resultI++] = elem;
        }
    }
 
 
    // Insert listA
    for (const label elem : listA)
    {
        if (elem != global0 && elem != global1)
        {
            if (findSortedIndex(listB, elem) == -1)
            {
                result[resultI++] = elem;
            }
        }
    }
 
    if (resultI != result.size())
    {
        FatalErrorInFunction
            << "problem" << abort(FatalError);
    }
 
    listB.transfer(result);
}
 
 
void Foam::cellToFaceStencil::merge
(
    const label globalI,
    const labelList& pGlobals,
    labelList& cCells
)
{
    labelHashSet set;
    forAll(cCells, i)
    {
        if (cCells[i] != globalI)
        {
            set.insert(cCells[i]);
        }
    }
 
    forAll(pGlobals, i)
    {
        if (pGlobals[i] != globalI)
        {
            set.insert(pGlobals[i]);
        }
    }
 
    cCells.setSize(set.size()+1);
    label n = 0;
    cCells[n++] = globalI;
 
    for (const label seti : set)
    {
        cCells[n++] = seti;
    }
}
 
 
void Foam::cellToFaceStencil::validBoundaryFaces(boolList& isValidBFace) const
{
    const polyBoundaryMesh& patches = mesh().boundaryMesh();
 
    isValidBFace.setSize(mesh().nBoundaryFaces(), true);
 
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
 
        if (pp.coupled() || isA<emptyPolyPatch>(pp))
        {
            label bFacei = pp.start()-mesh().nInternalFaces();
            forAll(pp, i)
            {
                isValidBFace[bFacei++] = false;
            }
        }
    }
}
 
 
Foam::autoPtr<Foam::indirectPrimitivePatch>
Foam::cellToFaceStencil::allCoupledFacesPatch() const
{
    const polyBoundaryMesh& patches = mesh().boundaryMesh();
 
    label nCoupled = 0;
 
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
 
        if (pp.coupled())
        {
            nCoupled += pp.size();
        }
    }
    labelList coupledFaces(nCoupled);
    nCoupled = 0;
 
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
 
        if (pp.coupled())
        {
            label facei = pp.start();
 
            forAll(pp, i)
            {
                coupledFaces[nCoupled++] = facei++;
            }
        }
    }
 
    return autoPtr<indirectPrimitivePatch>::New
    (
        IndirectList<face>
        (
            mesh().faces(),
            coupledFaces
        ),
        mesh().points()
    );
}
 
 
void Foam::cellToFaceStencil::insertFaceCells
(
    const label exclude0,
    const label exclude1,
    const boolList& isValidBFace,
    const labelList& faceLabels,
    labelHashSet& globals
) const
{
    const labelList& own = mesh().faceOwner();
    const labelList& nei = mesh().faceNeighbour();
 
    forAll(faceLabels, i)
    {
        label facei = faceLabels[i];
 
        label globalOwn = globalNumbering().toGlobal(own[facei]);
        if (globalOwn != exclude0 && globalOwn != exclude1)
        {
            globals.insert(globalOwn);
        }
 
        if (mesh().isInternalFace(facei))
        {
            label globalNei = globalNumbering().toGlobal(nei[facei]);
            if (globalNei != exclude0 && globalNei != exclude1)
            {
                globals.insert(globalNei);
            }
        }
        else
        {
            label bFacei = facei-mesh().nInternalFaces();
 
            if (isValidBFace[bFacei])
            {
                label globalI = globalNumbering().toGlobal
                (
                    mesh().nCells()
                  + bFacei
                );
 
                if (globalI != exclude0 && globalI != exclude1)
                {
                    globals.insert(globalI);
                }
            }
        }
    }
}
 
 
Foam::labelList Foam::cellToFaceStencil::calcFaceCells
(
    const boolList& isValidBFace,
    const labelList& faceLabels,
    labelHashSet& globals
) const
{
    globals.clear();
 
    insertFaceCells
    (
        -1,
        -1,
        isValidBFace,
        faceLabels,
        globals
    );
 
    return globals.toc();
}
 
 
void Foam::cellToFaceStencil::calcFaceStencil
(
    const labelListList& globalCellCells,
    labelListList& faceStencil
) const
{
    // Calculates per face a list of global cell/face indices.
 
    const polyBoundaryMesh& patches = mesh_.boundaryMesh();
    const label nBnd = mesh_.nBoundaryFaces();
    const labelList& own = mesh_.faceOwner();
    const labelList& nei = mesh_.faceNeighbour();
 
 
    // Determine neighbouring global cell Cells
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
    labelListList neiGlobalCellCells(nBnd);
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
 
        if (pp.coupled())
        {
            label facei = pp.start();
 
            forAll(pp, i)
            {
                neiGlobalCellCells[facei-mesh_.nInternalFaces()] =
                    globalCellCells[own[facei]];
                facei++;
            }
        }
    }
    //syncTools::swapBoundaryFaceList(mesh_, neiGlobalCellCells);
    syncTools::syncBoundaryFaceList
    (
        mesh_,
        neiGlobalCellCells,
        eqOp<labelList>(),
        dummyTransform()
    );
 
 
 
    // Construct stencil in global numbering
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
    faceStencil.setSize(mesh_.nFaces());
 
    labelHashSet faceStencilSet;
 
    for (label facei = 0; facei < mesh_.nInternalFaces(); facei++)
    {
        faceStencilSet.clear();
 
        const labelList& ownCCells = globalCellCells[own[facei]];
        label globalOwn = ownCCells[0];
        faceStencilSet.insert(ownCCells);  // Insert cellCells
 
        const labelList& neiCCells = globalCellCells[nei[facei]];
        label globalNei = neiCCells[0];
        faceStencilSet.insert(neiCCells);  // Insert cellCells
 
        // Guarantee owner first, neighbour second.
        faceStencil[facei].setSize(faceStencilSet.size());
        label n = 0;
        faceStencil[facei][n++] = globalOwn;
        faceStencil[facei][n++] = globalNei;
        for (const label stencili : faceStencilSet)
        {
            if (stencili != globalOwn && stencili != globalNei)
            {
                faceStencil[facei][n++] = stencili;
            }
        }
        //Pout<< "internalface:" << facei << " toc:" << faceStencilSet.toc()
        //    << " faceStencil:" << faceStencil[facei] << endl;
    }
    forAll(patches, patchi)
    {
        const polyPatch& pp = patches[patchi];
        label facei = pp.start();
 
        if (pp.coupled())
        {
            forAll(pp, i)
            {
                faceStencilSet.clear();
 
                const labelList& ownCCells = globalCellCells[own[facei]];
                label globalOwn = ownCCells[0];
                faceStencilSet.insert(ownCCells);
 
                // And the neighbours of the coupled cell
                const labelList& neiCCells =
                    neiGlobalCellCells[facei-mesh_.nInternalFaces()];
                label globalNei = neiCCells[0];
                faceStencilSet.insert(neiCCells);
 
                // Guarantee owner first, neighbour second.
                faceStencil[facei].setSize(faceStencilSet.size());
                label n = 0;
                faceStencil[facei][n++] = globalOwn;
                faceStencil[facei][n++] = globalNei;
                for (const label stencili : faceStencilSet)
                {
                    if (stencili != globalOwn && stencili != globalNei)
                    {
                        faceStencil[facei][n++] = stencili;
                    }
                }
 
                //Pout<< "coupledface:" << facei
                //    << " toc:" << faceStencilSet.toc()
                //    << " faceStencil:" << faceStencil[facei] << endl;
 
                facei++;
            }
        }
        else if (!isA<emptyPolyPatch>(pp))
        {
            forAll(pp, i)
            {
                faceStencilSet.clear();
 
                const labelList& ownCCells = globalCellCells[own[facei]];
                label globalOwn = ownCCells[0];
                faceStencilSet.insert(ownCCells);
 
                // Guarantee owner first
                faceStencil[facei].setSize(faceStencilSet.size());
                label n = 0;
                faceStencil[facei][n++] = globalOwn;
                for (const label stencili : faceStencilSet)
                {
                    if (stencili != globalOwn)
                    {
                        faceStencil[facei][n++] = stencili;
                    }
                }
 
                //Pout<< "boundaryface:" << facei
                //    << " toc:" << faceStencilSet.toc()
                //    << " faceStencil:" << faceStencil[facei] << endl;
 
                facei++;
            }
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::cellToFaceStencil::cellToFaceStencil(const polyMesh& mesh)
:
    mesh_(mesh),
    globalNumbering_(mesh_.nCells()+mesh_.nBoundaryFaces())
{}
 
 
// ************************************************************************* //