GAMGAgglomerationTemplates.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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License
    This file is part of OpenFOAM.

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#include <OpenFOAM/GAMGAgglomeration.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

template<class Type>
void Foam::GAMGAgglomeration::restrictField
(
    Field<Type>& cf,
    const Field<Type>& ff,
    const label fineLevelIndex
) const
{
    const labelList& fineToCoarse = restrictAddressing_[fineLevelIndex];

    if (ff.size() != fineToCoarse.size())
    {
        FatalErrorIn
        (
            "void GAMGAgglomeration::restrictField"
            "(Field<Type>& cf, const Field<Type>& ff, "
            "const label fineLevelIndex) const"
        )   << "field does not correspond to level " << fineLevelIndex
            << " sizes: field = " << ff.size()
            << " level = " << fineToCoarse.size()
            << abort(FatalError);
    }

    cf = pTraits<Type>::zero;

    forAll(ff, i)
    {
        cf[fineToCoarse[i]] += ff[i];
    }
}


template<class Type>
void Foam::GAMGAgglomeration::restrictFaceField
(
    Field<Type>& cf,
    const Field<Type>& ff,
    const label fineLevelIndex
) const
{
    const labelList& fineToCoarse = faceRestrictAddressing_[fineLevelIndex];

    cf = pTraits<Type>::zero;

    forAll(fineToCoarse, ffacei)
    {
        label cFace = fineToCoarse[ffacei];

        if (cFace >= 0)
        {
            cf[cFace] += ff[ffacei];
        }
    }
}


template<class Type>
void Foam::GAMGAgglomeration::prolongField
(
    Field<Type>& ff,
    const Field<Type>& cf,
    const label coarseLevelIndex
) const
{
    const labelList& fineToCoarse = restrictAddressing_[coarseLevelIndex];

    forAll(fineToCoarse, i)
    {
        ff[i] = cf[fineToCoarse[i]];
    }
}


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