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foam-extend4.1-coherent-io/applications/utilities/mesh/manipulation/mergeOrSplitBaffles/mergeOrSplitBaffles.C

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/*---------------------------------------------------------------------------*\
========= |
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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
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This file is part of foam-extend.
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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
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Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
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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
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along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
Application
mergeOrSplitBaffles
Description
Detects faces that share points (baffles). Either merge them or
duplicate the points.
Notes:
- can only handle pairwise boundary faces. So three faces using
the same points is not handled (is illegal mesh anyway)
- there is no option to only split/merge some baffles.
- surfaces consisting of duplicate faces can be topologically split
if the points on the interior of the surface cannot walk to all the
cells that use them in one go.
- Parallel operation (where duplicate face is perpendicular to a coupled
boundary) is supported but not really tested.
(Note that coupled faces themselves are not seen as duplicate faces)
\*---------------------------------------------------------------------------*/
#include "argList.H"
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#include "objectRegistry.H"
#include "Time.H"
#include "syncTools.H"
#include "faceSet.H"
#include "pointSet.H"
#include "meshTools.H"
#include "directTopoChange.H"
#include "polyRemoveFace.H"
#include "polyModifyFace.H"
#include "indirectPrimitivePatch.H"
#include "processorPolyPatch.H"
#include "localPointRegion.H"
#include "duplicatePoints.H"
#include "ReadFields.H"
#include "volFields.H"
#include "surfaceFields.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
void insertDuplicateMerge
(
const polyMesh& mesh,
const labelList& duplicates,
directTopoChange& meshMod
)
{
const faceList& faces = mesh.faces();
const labelList& faceOwner = mesh.faceOwner();
const faceZoneMesh& faceZones = mesh.faceZones();
forAll(duplicates, bFaceI)
{
label otherFaceI = duplicates[bFaceI];
if (otherFaceI != -1 && otherFaceI > bFaceI)
{
// Two duplicate faces. Merge.
label face0 = mesh.nInternalFaces() + bFaceI;
label face1 = mesh.nInternalFaces() + otherFaceI;
label own0 = faceOwner[face0];
label own1 = faceOwner[face1];
if (own0 < own1)
{
// Use face0 as the new internal face.
label zoneID = faceZones.whichZone(face0);
bool zoneFlip = false;
if (zoneID >= 0)
{
const faceZone& fZone = faceZones[zoneID];
zoneFlip = fZone.flipMap()[fZone.whichFace(face0)];
}
meshMod.setAction(polyRemoveFace(face1));
meshMod.setAction
(
polyModifyFace
(
faces[face0], // modified face
face0, // label of face being modified
own0, // owner
own1, // neighbour
false, // face flip
-1, // patch for face
false, // remove from zone
zoneID, // zone for face
zoneFlip // face flip in zone
)
);
}
else
{
// Use face1 as the new internal face.
label zoneID = faceZones.whichZone(face1);
bool zoneFlip = false;
if (zoneID >= 0)
{
const faceZone& fZone = faceZones[zoneID];
zoneFlip = fZone.flipMap()[fZone.whichFace(face1)];
}
meshMod.setAction(polyRemoveFace(face0));
meshMod.setAction
(
polyModifyFace
(
faces[face1], // modified face
face1, // label of face being modified
own1, // owner
own0, // neighbour
false, // face flip
-1, // patch for face
false, // remove from zone
zoneID, // zone for face
zoneFlip // face flip in zone
)
);
}
}
}
}
labelList findBaffles(const polyMesh& mesh, const labelList& boundaryFaces)
{
// Get all duplicate face labels (in boundaryFaces indices!).
labelList duplicates = localPointRegion::findDuplicateFaces
(
mesh,
boundaryFaces
);
// Check that none are on processor patches
const polyBoundaryMesh& patches = mesh.boundaryMesh();
forAll(duplicates, bFaceI)
{
if (duplicates[bFaceI] != -1)
{
label faceI = mesh.nInternalFaces() + bFaceI;
label patchI = patches.whichPatch(faceI);
if (isA<processorPolyPatch>(patches[patchI]))
{
FatalErrorIn("findBaffles(const polyMesh&, const labelList&)")
<< "Duplicate face " << faceI
<< " is on a processorPolyPatch."
<< "This is not allowed." << nl
<< "Face:" << faceI
<< " is on patch:" << patches[patchI].name()
<< abort(FatalError);
}
}
}
// Write to faceSet for ease of postprocessing.
{
faceSet duplicateSet
(
mesh,
"duplicateFaces",
(mesh.nFaces() - mesh.nInternalFaces())/256
);
forAll(duplicates, bFaceI)
{
label otherFaceI = duplicates[bFaceI];
if (otherFaceI != -1 && otherFaceI > bFaceI)
{
duplicateSet.insert(mesh.nInternalFaces() + bFaceI);
duplicateSet.insert(mesh.nInternalFaces() + otherFaceI);
}
}
Pout<< "Writing " << duplicateSet.size()
<< " duplicate faces to faceSet " << duplicateSet.objectPath()
<< nl << endl;
duplicateSet.write();
}
return duplicates;
}
int main(int argc, char *argv[])
{
# include "addRegionOption.H"
argList::validOptions.insert("split", "");
argList::validOptions.insert("overwrite", "");
argList::validOptions.insert("detectOnly", "");
# include "setRootCase.H"
# include "createTime.H"
runTime.functionObjects().off();
# include "createNamedMesh.H"
const word oldInstance = mesh.pointsInstance();
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bool split = args.optionFound("split");
bool overwrite = args.optionFound("overwrite");
bool detectOnly = args.optionFound("detectOnly");
// Collect all boundary faces
labelList boundaryFaces(mesh.nFaces() - mesh.nInternalFaces());
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forAll (boundaryFaces, i)
{
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boundaryFaces[i] = i + mesh.nInternalFaces();
}
if (detectOnly)
{
findBaffles(mesh, boundaryFaces);
return 0;
}
// Read objects in time directory
IOobjectList objects(mesh, runTime.timeName());
// Read vol fields.
PtrList<volScalarField> vsFlds;
ReadFields(mesh, objects, vsFlds);
PtrList<volVectorField> vvFlds;
ReadFields(mesh, objects, vvFlds);
PtrList<volSphericalTensorField> vstFlds;
ReadFields(mesh, objects, vstFlds);
PtrList<volSymmTensorField> vsymtFlds;
ReadFields(mesh, objects, vsymtFlds);
PtrList<volTensorField> vtFlds;
ReadFields(mesh, objects, vtFlds);
// Read surface fields.
PtrList<surfaceScalarField> ssFlds;
ReadFields(mesh, objects, ssFlds);
PtrList<surfaceVectorField> svFlds;
ReadFields(mesh, objects, svFlds);
PtrList<surfaceSphericalTensorField> sstFlds;
ReadFields(mesh, objects, sstFlds);
PtrList<surfaceSymmTensorField> ssymtFlds;
ReadFields(mesh, objects, ssymtFlds);
PtrList<surfaceTensorField> stFlds;
ReadFields(mesh, objects, stFlds);
// Mesh change engine
directTopoChange meshMod(mesh);
if (split)
{
Pout<< "Topologically splitting duplicate surfaces"
<< ", i.e. duplicating points internal to duplicate surfaces."
<< nl << endl;
// Analyse which points need to be duplicated
localPointRegion regionSide(mesh);
// Point duplication engine
duplicatePoints pointDuplicator(mesh);
// Insert topo changes
pointDuplicator.setRefinement(regionSide, meshMod);
}
else
{
Pout<< "Merging duplicate faces."
<< nl << endl;
// Get all duplicate face labels (in boundaryFaces indices!).
labelList duplicates(findBaffles(mesh, boundaryFaces));
// Merge into internal faces.
insertDuplicateMerge(mesh, duplicates, meshMod);
}
if (!overwrite)
{
runTime++;
}
// Change the mesh. No inflation.
autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh, false);
// Update fields
mesh.updateMesh(map);
// Move mesh (since morphing does not do this)
if (map().hasMotionPoints())
{
mesh.movePoints(map().preMotionPoints());
}
if (overwrite)
{
mesh.setInstance(oldInstance);
}
Pout<< "Writing mesh to time " << runTime.timeName() << endl;
mesh.write();
// Dump duplicated points (if any)
if (split)
{
const labelList& pointMap = map().pointMap();
labelList nDupPerPoint(map().nOldPoints(), 0);
pointSet dupPoints(mesh, "duplicatedPoints", 100);
forAll(pointMap, pointI)
{
label oldPointI = pointMap[pointI];
nDupPerPoint[oldPointI]++;
if (nDupPerPoint[oldPointI] > 1)
{
dupPoints.insert(map().reversePointMap()[oldPointI]);
dupPoints.insert(pointI);
}
}
Pout<< "Writing " << dupPoints.size()
<< " duplicated points to pointSet "
<< dupPoints.objectPath() << nl << endl;
dupPoints.write();
}
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //