pairGAMGAgglomerationCombineLevels.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
     \\/     M anipulation  |
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License
    This file is part of OpenFOAM.

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    under the terms of the GNU General Public License as published by
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#include "pairGAMGAgglomeration.H"
#include <OpenFOAM/lduInterfacePtrsList.H>
#include <OpenFOAM/GAMGInterface.H>

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

void Foam::pairGAMGAgglomeration::combineLevels(const label curLevel)
{
    label prevLevel = curLevel - 1;

    // Set the previous level nCells to the current
    nCells_[prevLevel] = nCells_[curLevel];

    // Map the restrictAddressing from the coarser level into the previous
    // finer level

    const labelList& curResAddr = restrictAddressing_[curLevel];
    labelList& prevResAddr = restrictAddressing_[prevLevel];

    const labelList& curFaceResAddr = faceRestrictAddressing_[curLevel];
    labelList& prevFaceResAddr = faceRestrictAddressing_[prevLevel];

    forAll(prevFaceResAddr, i)
    {
        if (prevFaceResAddr[i] >= 0)
        {
            prevFaceResAddr[i] = curFaceResAddr[prevFaceResAddr[i]];
        }
        else
        {
            prevFaceResAddr[i] = -curResAddr[-prevFaceResAddr[i] - 1] - 1;
        }
    }

    // Delete the restrictAddressing for the coarser level
    faceRestrictAddressing_.set(curLevel, NULL);

    forAll(prevResAddr, i)
    {
        prevResAddr[i] = curResAddr[prevResAddr[i]];
    }

    // Delete the restrictAddressing for the coarser level
    restrictAddressing_.set(curLevel, NULL);


    // Delete the matrix addressing and coefficients from the previous level
    // and replace with the corresponding entried from the coarser level
    meshLevels_.set(prevLevel, meshLevels_.set(curLevel, NULL));

    // Same for the lduInterfaceFields taking care to delete the sub-entries
    // held on List<T*>
    const lduInterfacePtrsList& curInterLevel = interfaceLevels_[curLevel+1];
    lduInterfacePtrsList& prevInterLevel = interfaceLevels_[prevLevel+1];

    forAll (prevInterLevel, inti)
    {
        if (prevInterLevel.set(inti))
        {
            refCast<GAMGInterface>(const_cast<lduInterface&>
            (
                prevInterLevel[inti]
            )).combine(refCast<const GAMGInterface>(curInterLevel[inti]));

            delete curInterLevel(inti);
        }
    }

    interfaceLevels_.set(curLevel+1, NULL);
}


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