primitiveMeshCellCells.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     3.2
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
    This file is part of foam-extend.
 
    foam-extend 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.
 
    foam-extend 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 foam-extend.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "primitiveMesh.H"
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::primitiveMesh::calcCellCells() const
{
    // Loop through faceCells and mark up neighbours
 
    if (debug)
    {
        Pout<< "primitiveMesh::calcCellCells() : calculating cellCells"
            << endl;
 
        if (debug == -1)
        {
            // For checking calls:abort so we can quickly hunt down
            // origin of call
            FatalErrorIn("primitiveMesh::calcCellCells()")
                << abort(FatalError);
        }
    }
 
    // It is an error to attempt to recalculate cellCells
    // if the pointer is already set
    if (ccPtr_)
    {
        FatalErrorIn("primitiveMesh::calcCellCells() const")
            << "cellCells already calculated"
            << abort(FatalError);
    }
    else
    {
        // 1. Count number of internal faces per cell
 
        labelList ncc(nCells(), 0);
 
        const labelList& own = faceOwner();
        const labelList& nei = faceNeighbour();
 
        forAll (nei, faceI)
        {
            ncc[own[faceI]]++;
            ncc[nei[faceI]]++;
        }
 
        // Create the storage
        ccPtr_ = new labelListList(ncc.size());
        labelListList& cellCellAddr = *ccPtr_;
 
 
 
        // 2. Size and fill cellCellAddr
 
        forAll (cellCellAddr, cellI)
        {
            cellCellAddr[cellI].setSize(ncc[cellI]);
        }
        ncc = 0;
 
        forAll (nei, faceI)
        {
            label ownCellI = own[faceI];
            label neiCellI = nei[faceI];
 
            cellCellAddr[ownCellI][ncc[ownCellI]++] = neiCellI;
            cellCellAddr[neiCellI][ncc[neiCellI]++] = ownCellI;
        }
    }
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
const Foam::labelListList& Foam::primitiveMesh::cellCells() const
{
    if (!ccPtr_)
    {
        calcCellCells();
    }
 
    return *ccPtr_;
}
 
 
const Foam::labelList& Foam::primitiveMesh::cellCells
(
    const label cellI,
    dynamicLabelList& storage
) const
{
    if (hasCellCells())
    {
        return cellCells()[cellI];
    }
    else
    {
        const labelList& own = faceOwner();
        const labelList& nei = faceNeighbour();
        const cell& cFaces = cells()[cellI];
 
        storage.clear();
 
        forAll(cFaces, i)
        {
            label faceI = cFaces[i];
 
            if (faceI < nInternalFaces())
            {
                if (own[faceI] == cellI)
                {
                    storage.append(nei[faceI]);
                }
                else
                {
                    storage.append(own[faceI]);
                }
            }
        }
 
        return storage;
    }
}
 
 
const Foam::labelList& Foam::primitiveMesh::cellCells(const label cellI) const
{
    return cellCells(cellI, labels_);
}
 
 
// ************************************************************************* //