fvMeshTools.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2012-2015 OpenFOAM Foundation
     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
-------------------------------------------------------------------------------
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 3 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, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "fvMeshTools.H"
#include "processorCyclicPolyPatch.H"
#include "polyBoundaryMeshEntries.H"
#include "fvMeshTools.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
// Adds patch if not yet there. Returns patchID.
Foam::label Foam::fvMeshTools::addPatch
(
    fvMesh& mesh,
    const polyPatch& patch,
    const dictionary& patchFieldDict,
    const word& defaultPatchFieldType,
    const bool validBoundary
)
{
    polyBoundaryMesh& polyPatches =
        const_cast<polyBoundaryMesh&>(mesh.boundaryMesh());
 
    label patchI = polyPatches.findPatchID(patch.name());
    if (patchI != -1)
    {
        // Already there
        return patchI;
    }
 
 
    // Append at end unless there are processor patches
    label insertPatchI = polyPatches.size();
    label startFaceI = mesh.nFaces();
 
    if (!isA<processorPolyPatch>(patch))
    {
        forAll(polyPatches, patchI)
        {
            const polyPatch& pp = polyPatches[patchI];
 
            if (isA<processorPolyPatch>(pp))
            {
                insertPatchI = patchI;
                startFaceI = pp.start();
                break;
            }
        }
    }
 
 
    // Below is all quite a hack. Feel free to change once there is a better
    // mechanism to insert and reorder patches.
 
    // Clear local fields and e.g. polyMesh parallelInfo.
    mesh.clearOut();
 
    label sz = polyPatches.size();
 
    fvBoundaryMesh& fvPatches = const_cast<fvBoundaryMesh&>(mesh.boundary());
 
    // Add polyPatch at the end
    polyPatches.setSize(sz+1);
    polyPatches.set
    (
        sz,
        patch.clone
        (
            polyPatches,
            insertPatchI,   //index
            0,              //size
            startFaceI      //start
        )
    );
    fvPatches.setSize(sz+1);
    fvPatches.set
    (
        sz,
        fvPatch::New
        (
            polyPatches[sz],  // point to newly added polyPatch
            mesh.boundary()
        )
    );
 
    addPatchFields<volScalarField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<scalar>::zero
    );
    addPatchFields<volVectorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<vector>::zero
    );
    addPatchFields<volSphericalTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<sphericalTensor>::zero
    );
    addPatchFields<volSymmTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<symmTensor>::zero
    );
    addPatchFields<volTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<tensor>::zero
    );
 
    // Surface fields
 
    addPatchFields<surfaceScalarField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<scalar>::zero
    );
    addPatchFields<surfaceVectorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<vector>::zero
    );
    addPatchFields<surfaceSphericalTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<sphericalTensor>::zero
    );
    addPatchFields<surfaceSymmTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<symmTensor>::zero
    );
    addPatchFields<surfaceTensorField>
    (
        mesh,
        patchFieldDict,
        defaultPatchFieldType,
        pTraits<tensor>::zero
    );
 
    // Create reordering list
    // patches before insert position stay as is
    labelList oldToNew(sz+1);
    for (label i = 0; i < insertPatchI; i++)
    {
        oldToNew[i] = i;
    }
    // patches after insert position move one up
    for (label i = insertPatchI; i < sz; i++)
    {
        oldToNew[i] = i+1;
    }
    // appended patch gets moved to insert position
    oldToNew[sz] = insertPatchI;
 
    // Shuffle into place
    polyPatches.reorder(oldToNew, validBoundary);
    fvPatches.reorder(oldToNew);
 
    reorderPatchFields<volScalarField>(mesh, oldToNew);
    reorderPatchFields<volVectorField>(mesh, oldToNew);
    reorderPatchFields<volSphericalTensorField>(mesh, oldToNew);
    reorderPatchFields<volSymmTensorField>(mesh, oldToNew);
    reorderPatchFields<volTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceScalarField>(mesh, oldToNew);
    reorderPatchFields<surfaceVectorField>(mesh, oldToNew);
    reorderPatchFields<surfaceSphericalTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceSymmTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceTensorField>(mesh, oldToNew);
 
    return insertPatchI;
}
 
 
void Foam::fvMeshTools::setPatchFields
(
    fvMesh& mesh,
    const label patchI,
    const dictionary& patchFieldDict
)
{
    setPatchFields<volScalarField>(mesh, patchI, patchFieldDict);
    setPatchFields<volVectorField>(mesh, patchI, patchFieldDict);
    setPatchFields<volSphericalTensorField>(mesh, patchI, patchFieldDict);
    setPatchFields<volSymmTensorField>(mesh, patchI, patchFieldDict);
    setPatchFields<volTensorField>(mesh, patchI, patchFieldDict);
    setPatchFields<surfaceScalarField>(mesh, patchI, patchFieldDict);
    setPatchFields<surfaceVectorField>(mesh, patchI, patchFieldDict);
    setPatchFields<surfaceSphericalTensorField>
    (
        mesh,
        patchI,
        patchFieldDict
    );
    setPatchFields<surfaceSymmTensorField>(mesh, patchI, patchFieldDict);
    setPatchFields<surfaceTensorField>(mesh, patchI, patchFieldDict);
}
 
 
void Foam::fvMeshTools::zeroPatchFields(fvMesh& mesh, const label patchI)
{
    setPatchFields<volScalarField>(mesh, patchI, pTraits<scalar>::zero);
    setPatchFields<volVectorField>(mesh, patchI, pTraits<vector>::zero);
    setPatchFields<volSphericalTensorField>
    (
        mesh,
        patchI,
        pTraits<sphericalTensor>::zero
    );
    setPatchFields<volSymmTensorField>
    (
        mesh,
        patchI,
        pTraits<symmTensor>::zero
    );
    setPatchFields<volTensorField>(mesh, patchI, pTraits<tensor>::zero);
    setPatchFields<surfaceScalarField>(mesh, patchI, pTraits<scalar>::zero);
    setPatchFields<surfaceVectorField>(mesh, patchI, pTraits<vector>::zero);
    setPatchFields<surfaceSphericalTensorField>
    (
        mesh,
        patchI,
        pTraits<sphericalTensor>::zero
    );
    setPatchFields<surfaceSymmTensorField>
    (
        mesh,
        patchI,
        pTraits<symmTensor>::zero
    );
    setPatchFields<surfaceTensorField>(mesh, patchI, pTraits<tensor>::zero);
}
 
 
// Deletes last patch
void Foam::fvMeshTools::trimPatches(fvMesh& mesh, const label nPatches)
{
    // Clear local fields and e.g. polyMesh globalMeshData.
    mesh.clearOut();
 
    polyBoundaryMesh& polyPatches =
        const_cast<polyBoundaryMesh&>(mesh.boundaryMesh());
    fvBoundaryMesh& fvPatches = const_cast<fvBoundaryMesh&>(mesh.boundary());
 
    if (polyPatches.empty())
    {
        FatalErrorInFunction
            << "No patches in mesh"
            << abort(FatalError);
    }
 
    label nFaces = 0;
    for (label patchI = nPatches; patchI < polyPatches.size(); patchI++)
    {
        nFaces += polyPatches[patchI].size();
    }
    reduce(nFaces, sumOp<label>());
 
    if (nFaces)
    {
        FatalErrorInFunction
            << "There are still " << nFaces
            << " faces in " << polyPatches.size()-nPatches
            << " patches to be deleted" << abort(FatalError);
    }
 
    // Remove actual patches
    polyPatches.setSize(nPatches);
    fvPatches.setSize(nPatches);
 
    trimPatchFields<volScalarField>(mesh, nPatches);
    trimPatchFields<volVectorField>(mesh, nPatches);
    trimPatchFields<volSphericalTensorField>(mesh, nPatches);
    trimPatchFields<volSymmTensorField>(mesh, nPatches);
    trimPatchFields<volTensorField>(mesh, nPatches);
 
    trimPatchFields<surfaceScalarField>(mesh, nPatches);
    trimPatchFields<surfaceVectorField>(mesh, nPatches);
    trimPatchFields<surfaceSphericalTensorField>(mesh, nPatches);
    trimPatchFields<surfaceSymmTensorField>(mesh, nPatches);
    trimPatchFields<surfaceTensorField>(mesh, nPatches);
}
 
 
void Foam::fvMeshTools::reorderPatches
(
    fvMesh& mesh,
    const labelList& oldToNew,
    const label nNewPatches,
    const bool validBoundary
)
{
    polyBoundaryMesh& polyPatches =
        const_cast<polyBoundaryMesh&>(mesh.boundaryMesh());
    fvBoundaryMesh& fvPatches = const_cast<fvBoundaryMesh&>(mesh.boundary());
 
    // Shuffle into place
    polyPatches.reorder(oldToNew, validBoundary);
    fvPatches.reorder(oldToNew);
 
    reorderPatchFields<volScalarField>(mesh, oldToNew);
    reorderPatchFields<volVectorField>(mesh, oldToNew);
    reorderPatchFields<volSphericalTensorField>(mesh, oldToNew);
    reorderPatchFields<volSymmTensorField>(mesh, oldToNew);
    reorderPatchFields<volTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceScalarField>(mesh, oldToNew);
    reorderPatchFields<surfaceVectorField>(mesh, oldToNew);
    reorderPatchFields<surfaceSphericalTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceSymmTensorField>(mesh, oldToNew);
    reorderPatchFields<surfaceTensorField>(mesh, oldToNew);
 
    // Remove last.
    trimPatches(mesh, nNewPatches);
}
 
 
Foam::labelList Foam::fvMeshTools::removeEmptyPatches
(
    fvMesh& mesh,
    const bool validBoundary
)
{
    const polyBoundaryMesh& pbm = mesh.boundaryMesh();
 
    labelList newToOld(pbm.size());
    labelList oldToNew(pbm.size(), -1);
    label newI = 0;
 
 
    // Assumes all non-coupled boundaries are on all processors!
    forAll(pbm, patchI)
    {
        const polyPatch& pp = pbm[patchI];
 
        if (!isA<processorPolyPatch>(pp))
        {
            label nFaces = pp.size();
            if (validBoundary)
            {
                reduce(nFaces, sumOp<label>());
            }
 
            if (nFaces > 0)
            {
                newToOld[newI] = patchI;
                oldToNew[patchI] = newI++;
            }
        }
    }
 
    // Same for processor patches (but need no reduction)
    forAll(pbm, patchI)
    {
        const polyPatch& pp = pbm[patchI];
 
        if (isA<processorPolyPatch>(pp) && pp.size())
        {
            newToOld[newI] = patchI;
            oldToNew[patchI] = newI++;
        }
    }
 
    newToOld.setSize(newI);
 
    // Move all deleteable patches to the end
    forAll(oldToNew, patchI)
    {
        if (oldToNew[patchI] == -1)
        {
            oldToNew[patchI] = newI++;
        }
    }
 
    reorderPatches(mesh, oldToNew, newToOld.size(), validBoundary);
 
    return newToOld;
}
 
 
Foam::autoPtr<Foam::fvMesh> Foam::fvMeshTools::newMesh
(
    const IOobject& io,
    const bool masterOnlyReading
)
{
    // Region name
    // ~~~~~~~~~~~
 
    fileName meshSubDir;
 
    if (io.name() == polyMesh::defaultRegion)
    {
        meshSubDir = polyMesh::meshSubDir;
    }
    else
    {
        meshSubDir = io.name()/polyMesh::meshSubDir;
    }
 
 
    fileName facesInstance;
 
    // Patch types
    // ~~~~~~~~~~~
    // Read and scatter master patches (without reading master mesh!)
 
    PtrList<entry> patchEntries;
    if (Pstream::master())
    {
        facesInstance = io.time().findInstance
        (
            meshSubDir,
            "faces",
            IOobject::MUST_READ
        );
 
        patchEntries = polyBoundaryMeshEntries
        (
            IOobject
            (
                "boundary",
                facesInstance,
                meshSubDir,
                io.db(),
                IOobject::MUST_READ,
                IOobject::NO_WRITE,
                false
            )
        );
 
        // Send patches
        for
        (
            int slave=Pstream::firstSlave();
            slave<=Pstream::lastSlave();
            slave++
        )
        {
            OPstream toSlave(Pstream::scheduled, slave);
            toSlave << patchEntries;
        }
    }
    else
    {
        // Receive patches
        IPstream fromMaster(Pstream::scheduled, Pstream::masterNo());
        fromMaster >> patchEntries;
    }
 
 
    Pstream::scatter(facesInstance);
 
    // Dummy meshes
    // ~~~~~~~~~~~~
 
    // Check who has a mesh
    const fileName meshDir = io.time().path()/facesInstance/meshSubDir;
    bool haveMesh = isDir(meshDir);
    if (masterOnlyReading && !Pstream::master())
    {
        haveMesh = false;
    }
 
 
    // Set up to read-if-present. Note: does not search for mesh so set
    // instance explicitly
    IOobject meshIO(io);
    meshIO.instance() = facesInstance;
    if (masterOnlyReading && !Pstream::master())
    {
        meshIO.readOpt() = IOobject::NO_READ;
    }
    else
    {
        meshIO.readOpt() = IOobject::READ_IF_PRESENT;
    }
 
 
    // Read mesh
    // ~~~~~~~~~
    // Now all processors read a mesh and use supplied points,faces etc
    // if there is none.
    // Note: fvSolution, fvSchemes are also using the supplied Ioobject so
    //       on slave will be NO_READ, on master READ_IF_PRESENT. This will
    //       conflict with e.g. timeStampMaster reading so switch off.
 
    const regIOobject::fileCheckTypes oldCheckType =
        regIOobject::fileModificationChecking;
    regIOobject::fileModificationChecking = regIOobject::timeStamp;
 
    autoPtr<fvMesh> meshPtr
    (
        new fvMesh
        (
            meshIO,
            xferCopy(pointField()),
            xferCopy(faceList()),
            xferCopy(labelList()),
            xferCopy(labelList())
        )
    );
    fvMesh& mesh = meshPtr();
 
    regIOobject::fileModificationChecking = oldCheckType;
 
 
 
    // Add patches
    // ~~~~~~~~~~~
 
 
    bool havePatches = mesh.boundary().size();
    reduce(havePatches, andOp<bool>());
 
    if (!havePatches)
    {
        // There are one or more processors without full complement of
        // patches
 
        DynamicList<polyPatch*> newPatches;
 
        if (haveMesh)   //Pstream::master())
        {
            forAll(mesh.boundary(), patchI)
            {
                newPatches.append
                (
                    mesh.boundaryMesh()[patchI].clone(mesh.boundaryMesh()).ptr()
                );
            }
        }
        else
        {
            forAll(patchEntries, patchI)
            {
                const entry& e = patchEntries[patchI];
                const word type(e.dict().lookup("type"));
 
                if
                (
                    type == processorPolyPatch::typeName
                 || type == processorCyclicPolyPatch::typeName
                )
                {}
                else
                {
                    dictionary patchDict(e.dict());
                    patchDict.set("nFaces", 0);
                    patchDict.set("startFace", 0);
 
                    newPatches.append
                    (
                        polyPatch::New
                        (
                            patchEntries[patchI].keyword(),
                            patchDict,
                            newPatches.size(),
                            mesh.boundaryMesh()
                        ).ptr()
                    );
                }
            }
        }
        mesh.removeFvBoundary();
        mesh.addFvPatches(newPatches);
    }
 
    //Pout<< "patches:" << endl;
    //forAll(mesh.boundary(), patchI)
    //{
    //    Pout<< "    type" << mesh.boundary()[patchI].type()
    //        << " size:" << mesh.boundary()[patchI].size()
    //        << " start:" << mesh.boundary()[patchI].start() << endl;
    //}
    //Pout<< endl;
 
 
    // Determine zones
    // ~~~~~~~~~~~~~~~
 
    wordList pointZoneNames(mesh.pointZones().names());
    Pstream::scatter(pointZoneNames);
    wordList faceZoneNames(mesh.faceZones().names());
    Pstream::scatter(faceZoneNames);
    wordList cellZoneNames(mesh.cellZones().names());
    Pstream::scatter(cellZoneNames);
 
    if (!haveMesh)
    {
        // Add the zones. Make sure to remove the old dummy ones first
        mesh.pointZones().clear();
        mesh.faceZones().clear();
        mesh.cellZones().clear();
 
        List<pointZone*> pz(pointZoneNames.size());
        forAll(pointZoneNames, i)
        {
            pz[i] = new pointZone
            (
                pointZoneNames[i],
                labelList(0),
                i,
                mesh.pointZones()
            );
        }
        List<faceZone*> fz(faceZoneNames.size());
        forAll(faceZoneNames, i)
        {
            fz[i] = new faceZone
            (
                faceZoneNames[i],
                labelList(0),
                boolList(0),
                i,
                mesh.faceZones()
            );
        }
        List<cellZone*> cz(cellZoneNames.size());
        forAll(cellZoneNames, i)
        {
            cz[i] = new cellZone
            (
                cellZoneNames[i],
                labelList(0),
                i,
                mesh.cellZones()
            );
        }
 
        if (pz.size() && fz.size() && cz.size())
        {
            mesh.addZones(pz, fz, cz);
        }
    }
 
    return meshPtr;
}
 
 
// ************************************************************************* //