CFCCellToCellStencil.C

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#include "CFCCellToCellStencil.H"
#include <OpenFOAM/syncTools.H>
#include <OpenFOAM/SortableList.H>
#include <OpenFOAM/emptyPolyPatch.H>

// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //

// Calculates per face the neighbour data (= cell or boundary face)
void Foam::CFCCellToCellStencil::calcFaceBoundaryData
(
    labelList& neiGlobal
) const
{
    const polyBoundaryMesh& patches = mesh().boundaryMesh();
    const label nBnd = mesh().nFaces()-mesh().nInternalFaces();
    const labelList& own = mesh().faceOwner();

    neiGlobal.setSize(nBnd);

    forAll(patches, patchI)
    {
        const polyPatch& pp = patches[patchI];
        label faceI = pp.start();

        if (pp.coupled())
        {
            // For coupled faces get the cell on the other side
            forAll(pp, i)
            {
                label bFaceI = faceI-mesh().nInternalFaces(); 
                neiGlobal[bFaceI] = globalNumbering().toGlobal(own[faceI]);
                faceI++;
            }
        }
        else if (isA<emptyPolyPatch>(pp))
        {
            forAll(pp, i)
            {
                label bFaceI = faceI-mesh().nInternalFaces(); 
                neiGlobal[bFaceI] = -1;
                faceI++;
            }
        }
        else
        {
            // For noncoupled faces get the boundary face.
            forAll(pp, i)
            {
                label bFaceI = faceI-mesh().nInternalFaces(); 
                neiGlobal[bFaceI] =
                    globalNumbering().toGlobal(mesh().nCells()+bFaceI);
                faceI++;
            }
        }
    }
    syncTools::swapBoundaryFaceList(mesh(), neiGlobal, false);
}


// Calculates per cell the neighbour data (= cell or boundary in global
// numbering). First element is always cell itself!
void Foam::CFCCellToCellStencil::calcCellStencil(labelListList& globalCellCells)
 const
{
    const label nBnd = mesh().nFaces()-mesh().nInternalFaces();
    const labelList& own = mesh().faceOwner();
    const labelList& nei = mesh().faceNeighbour();


    // Calculate coupled neighbour (in global numbering)
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    labelList neiGlobal(nBnd);
    calcFaceBoundaryData(neiGlobal);


    // Determine cellCells in global numbering
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    globalCellCells.setSize(mesh().nCells());
    forAll(globalCellCells, cellI)
    {
        const cell& cFaces = mesh().cells()[cellI];

        labelList& cCells = globalCellCells[cellI];

        cCells.setSize(cFaces.size()+1);

        label nNbr = 0;

        // Myself
        cCells[nNbr++] = globalNumbering().toGlobal(cellI);

        // Collect neighbouring cells/faces
        forAll(cFaces, i)
        {
            label faceI = cFaces[i];

            if (mesh().isInternalFace(faceI))
            {
                label nbrCellI = own[faceI];
                if (nbrCellI == cellI)
                {
                    nbrCellI = nei[faceI];
                }
                cCells[nNbr++] = globalNumbering().toGlobal(nbrCellI);
            }
            else
            {
                label nbrCellI = neiGlobal[faceI-mesh().nInternalFaces()];
                if (nbrCellI != -1)
                {
                    cCells[nNbr++] = nbrCellI;
                }
            }
        }
        cCells.setSize(nNbr);
    }
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::CFCCellToCellStencil::CFCCellToCellStencil(const polyMesh& mesh)
:
    cellToCellStencil(mesh)
{
    // Calculate per cell the (face) connected cells (in global numbering)
    calcCellStencil(*this);
}


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