ENH: Split src/parallel into decompse and reconstruct to remove cyclic build dependency

src/parallel/decompose/decompositionMethods/decompositionMethod/decompositionMethod.C

@@ -0,0 +1,216 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+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 2 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
+    along with OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+InClass
+    decompositionMethod
+
+\*---------------------------------------------------------------------------*/
+
+#include "decompositionMethod.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTypeNameAndDebug(decompositionMethod, 0);
+    defineRunTimeSelectionTable(decompositionMethod, dictionary);
+    defineRunTimeSelectionTable(decompositionMethod, dictionaryMesh);
+}
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+Foam::autoPtr<Foam::decompositionMethod> Foam::decompositionMethod::New
+(
+    const dictionary& decompositionDict
+)
+{
+    word decompositionMethodTypeName(decompositionDict.lookup("method"));
+
+    Info<< "Selecting decompositionMethod "
+        << decompositionMethodTypeName << endl;
+
+    dictionaryConstructorTable::iterator cstrIter =
+        dictionaryConstructorTablePtr_->find(decompositionMethodTypeName);
+
+    if (cstrIter == dictionaryConstructorTablePtr_->end())
+    {
+        FatalErrorIn
+        (
+            "decompositionMethod::New"
+            "(const dictionary& decompositionDict)"
+        )   << "Unknown decompositionMethod "
+            << decompositionMethodTypeName << endl << endl
+            << "Valid decompositionMethods are : " << endl
+            << dictionaryConstructorTablePtr_->sortedToc()
+            << exit(FatalError);
+    }
+
+    return autoPtr<decompositionMethod>(cstrIter()(decompositionDict));
+}
+
+
+Foam::autoPtr<Foam::decompositionMethod> Foam::decompositionMethod::New
+(
+    const dictionary& decompositionDict,
+    const polyMesh& mesh
+)
+{
+    word decompositionMethodTypeName(decompositionDict.lookup("method"));
+
+    Info<< "Selecting decompositionMethod "
+        << decompositionMethodTypeName << endl;
+
+    dictionaryMeshConstructorTable::iterator cstrIter =
+        dictionaryMeshConstructorTablePtr_->find(decompositionMethodTypeName);
+
+    if (cstrIter == dictionaryMeshConstructorTablePtr_->end())
+    {
+        FatalErrorIn
+        (
+            "decompositionMethod::New"
+            "(const dictionary& decompositionDict, "
+            "const polyMesh& mesh)"
+        )   << "Unknown decompositionMethod "
+            << decompositionMethodTypeName << endl << endl
+            << "Valid decompositionMethods are : " << endl
+            << dictionaryMeshConstructorTablePtr_->sortedToc()
+            << exit(FatalError);
+    }
+
+    return autoPtr<decompositionMethod>(cstrIter()(decompositionDict, mesh));
+}
+
+
+Foam::labelList Foam::decompositionMethod::decompose
+(
+    const pointField& points
+)
+{
+    scalarField weights(0);
+
+    return decompose(points, weights);
+}
+
+
+Foam::labelList Foam::decompositionMethod::decompose
+(
+    const labelList& fineToCoarse,
+    const pointField& coarsePoints,
+    const scalarField& coarseWeights
+)
+{
+    // Decompose based on agglomerated points
+    labelList coarseDistribution(decompose(coarsePoints, coarseWeights));
+
+    // Rework back into decomposition for original mesh_
+    labelList fineDistribution(fineToCoarse.size());
+
+    forAll(fineDistribution, i)
+    {
+        fineDistribution[i] = coarseDistribution[fineToCoarse[i]];
+    }
+
+    return fineDistribution;
+}
+
+
+Foam::labelList Foam::decompositionMethod::decompose
+(
+    const labelList& fineToCoarse,
+    const pointField& coarsePoints
+)
+{
+    // Decompose based on agglomerated points
+    labelList coarseDistribution(decompose(coarsePoints));
+
+    // Rework back into decomposition for original mesh_
+    labelList fineDistribution(fineToCoarse.size());
+
+    forAll(fineDistribution, i)
+    {
+        fineDistribution[i] = coarseDistribution[fineToCoarse[i]];
+    }
+
+    return fineDistribution;
+}
+
+
+void Foam::decompositionMethod::calcCellCells
+(
+    const polyMesh& mesh,
+    const labelList& fineToCoarse,
+    const label nCoarse,
+    labelListList& cellCells
+)
+{
+    if (fineToCoarse.size() != mesh.nCells())
+    {
+        FatalErrorIn
+        (
+            "decompositionMethod::calcCellCells"
+            "(const labelList&, labelListList&) const"
+        )   << "Only valid for mesh agglomeration." << exit(FatalError);
+    }
+
+    List<DynamicList<label> > dynCellCells(nCoarse);
+
+    forAll(mesh.faceNeighbour(), faceI)
+    {
+        label own = fineToCoarse[mesh.faceOwner()[faceI]];
+        label nei = fineToCoarse[mesh.faceNeighbour()[faceI]];
+
+        if (own != nei)
+        {
+            if (findIndex(dynCellCells[own], nei) == -1)
+            {
+                dynCellCells[own].append(nei);
+            }
+            if (findIndex(dynCellCells[nei], own) == -1)
+            {
+                dynCellCells[nei].append(own);
+            }
+        }
+    }
+
+    cellCells.setSize(dynCellCells.size());
+    forAll(dynCellCells, coarseI)
+    {
+        cellCells[coarseI].transfer(dynCellCells[coarseI]);
+    }
+}
+
+
+Foam::labelList Foam::decompositionMethod::decompose
+(
+    const labelListList& globalCellCells,
+    const pointField& cc
+)
+{
+    scalarField cWeights(0);
+
+    return decompose(globalCellCells, cc, cWeights);
+}
+
+
+// ************************************************************************* //