694 lines
20 KiB
C
694 lines
20 KiB
C
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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reconstructParMesh
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Description
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Reconstructs a mesh using geometric information only. Writes
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point/face/cell procAddressing so afterwards reconstructPar can be used to
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reconstruct fields.
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Note:
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- uses geometric matching tolerance (set with -mergeTol option)
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If the parallel case does not have correct procBoundaries use the
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-fullMatch option which will check all boundary faces (bit slower).
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Time.H"
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#include "IOobjectList.H"
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#include "labelIOList.H"
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#include "processorPolyPatch.H"
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#include "mapAddedPolyMesh.H"
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#include "polyMeshAdder.H"
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#include "faceCoupleInfo.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Tolerance (as fraction of the bounding box). Needs to be fairly lax since
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// usually meshes get written with limited precision (6 digits)
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static const scalar defaultMergeTol = 1E-7;
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static void renumber
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(
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const labelList& map,
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labelList& elems
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)
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{
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forAll(elems, i)
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{
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if (elems[i] >= 0)
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{
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elems[i] = map[elems[i]];
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}
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}
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}
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// Determine which faces are coupled. Uses geometric merge distance.
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// Looks either at all boundaryFaces (fullMatch) or only at the
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// procBoundaries for procI. Assumes that masterMesh contains already merged
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// all the processors < procI.
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autoPtr<faceCoupleInfo> determineCoupledFaces
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(
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const bool fullMatch,
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const label procI,
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const polyMesh& masterMesh,
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const polyMesh& meshToAdd,
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const scalar mergeDist
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)
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{
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if (fullMatch || masterMesh.nCells() == 0)
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{
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return autoPtr<faceCoupleInfo>
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(
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new faceCoupleInfo
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(
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masterMesh,
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meshToAdd,
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mergeDist, // absolute merging distance
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true // matching faces identical
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)
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);
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}
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else
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{
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// Pick up all patches on masterMesh ending in "toDDD" where DDD is
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// the processor number procI.
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const polyBoundaryMesh& masterPatches = masterMesh.boundaryMesh();
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const string toProcString("to" + name(procI));
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DynamicList<label> masterFaces
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(
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masterMesh.nFaces()
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- masterMesh.nInternalFaces()
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);
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forAll(masterPatches, patchI)
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{
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const polyPatch& pp = masterPatches[patchI];
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if
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(
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isA<processorPolyPatch>(pp)
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&& (
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pp.name().rfind(toProcString)
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== (pp.name().size()-toProcString.size())
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)
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)
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{
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label meshFaceI = pp.start();
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forAll(pp, i)
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{
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masterFaces.append(meshFaceI++);
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}
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}
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}
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masterFaces.shrink();
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// Pick up all patches on meshToAdd ending in "procBoundaryDDDtoYYY"
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// where DDD is the processor number procI and YYY is < procI.
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const polyBoundaryMesh& addPatches = meshToAdd.boundaryMesh();
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DynamicList<label> addFaces
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(
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meshToAdd.nFaces()
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- meshToAdd.nInternalFaces()
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);
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forAll(addPatches, patchI)
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{
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const polyPatch& pp = addPatches[patchI];
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if (isA<processorPolyPatch>(pp))
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{
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bool isConnected = false;
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for (label mergedProcI = 0; mergedProcI < procI; mergedProcI++)
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{
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const string fromProcString
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(
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"procBoundary"
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+ name(procI)
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+ "to"
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+ name(mergedProcI)
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);
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if (pp.name() == fromProcString)
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{
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isConnected = true;
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break;
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}
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}
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if (isConnected)
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{
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label meshFaceI = pp.start();
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forAll(pp, i)
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{
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addFaces.append(meshFaceI++);
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}
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}
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}
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}
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addFaces.shrink();
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return autoPtr<faceCoupleInfo>
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(
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new faceCoupleInfo
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(
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masterMesh,
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masterFaces,
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meshToAdd,
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addFaces,
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mergeDist, // absolute merging distance
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true, // matching faces identical?
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false, // if perfectmatch are faces already ordered
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// (e.g. processor patches)
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false // are faces each on separate patch?
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)
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);
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}
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}
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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argList::validOptions.insert("mergeTol", "relative merge distance");
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argList::validOptions.insert("fullMatch", "");
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# include "addTimeOptions.H"
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# include "addRegionOption.H"
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# include "setRootCase.H"
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# include "createTime.H"
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Pout<< "This is an experimental tool which tries to merge"
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<< " individual processor" << nl
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<< "meshes back into one master mesh. Use it if the original"
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<< " master mesh has" << nl
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<< "been deleted or if the processor meshes have been modified"
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<< " (topology change)." << nl
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<< "This tool will write the resulting mesh to a new time step"
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<< " and construct" << nl
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<< "xxxxProcAddressing files in the processor meshes so"
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<< " reconstructPar can be" << nl
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<< "used to regenerate the fields on the master mesh." << nl
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<< nl
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<< "Not well tested & use at your own risk!" << nl
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<< endl;
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word regionName = polyMesh::defaultRegion;
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fileName regionPrefix = "";
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if (args.options().found("region"))
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{
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regionName = args.options()["region"];
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regionPrefix = regionName;
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Info<< "Operating on region " << regionName << nl << endl;
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}
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scalar mergeTol = defaultMergeTol;
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if (args.options().found("mergeTol"))
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{
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mergeTol = readScalar(IStringStream(args.options()["mergeTol"])());
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}
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scalar writeTol = Foam::pow(10.0, -scalar(IOstream::defaultPrecision()));
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Pout<< "Merge tolerance : " << mergeTol << nl
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<< "Write tolerance : " << writeTol << endl;
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if (runTime.writeFormat() == IOstream::ASCII && mergeTol < writeTol)
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{
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FatalErrorIn(args.executable())
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<< "Your current settings specify ASCII writing with "
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<< IOstream::defaultPrecision() << " digits precision." << endl
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<< "Your merging tolerance (" << mergeTol << ") is finer than this."
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<< endl
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<< "Please change your writeFormat to binary"
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<< " or increase the writePrecision" << endl
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<< "or adjust the merge tolerance (-mergeTol)."
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<< exit(FatalError);
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}
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const bool fullMatch = args.options().found("fullMatch");
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if (fullMatch)
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{
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Pout<< "Doing geometric matching on all boundary faces." << nl << endl;
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}
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else
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{
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Pout<< "Doing geometric matching on correct procBoundaries only."
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<< nl << "This assumes a correct decomposition." << endl;
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}
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int nProcs = 0;
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while
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(
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exists
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(
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args.rootPath()
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/ args.caseName()
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/ fileName(word("processor") + name(nProcs))
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)
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)
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{
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nProcs++;
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}
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Pout<< "Found " << nProcs << " processor directories" << nl << endl;
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// Read all databases.
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PtrList<Time> databases(nProcs);
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forAll (databases, procI)
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{
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Pout<< "Reading database "
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<< args.caseName()/fileName(word("processor") + name(procI))
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<< endl;
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databases.set
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(
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procI,
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new Time
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(
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Time::controlDictName,
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args.rootPath(),
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args.caseName()/fileName(word("processor") + name(procI))
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)
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);
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Time& procTime = databases[procI];
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instantList Times = procTime.times();
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// set startTime and endTime depending on -time and -latestTime options
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# include "checkTimeOptions.H"
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procTime.setTime(Times[startTime], startTime);
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if (procI > 0 && databases[procI-1].value() != procTime.value())
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{
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FatalErrorIn(args.executable())
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<< "Time not equal on processors." << nl
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<< "Processor:" << procI-1
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<< " time:" << databases[procI-1].value() << nl
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<< "Processor:" << procI
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<< " time:" << procTime.value()
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<< exit(FatalError);
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}
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}
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// Set master time
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Pout<< "Setting master time to " << databases[0].timeName() << nl << endl;
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runTime.setTime(databases[0]);
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// Read point on individual processors to determine merge tolerance
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// (otherwise single cell domains might give problems)
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boundBox bb
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(
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point(GREAT, GREAT, GREAT),
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point(-GREAT, -GREAT, -GREAT)
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);
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for (label procI = 0; procI < nProcs; procI++)
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{
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fileName pointsInstance
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(
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databases[procI].findInstance
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(
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regionPrefix/polyMesh::meshSubDir,
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"points"
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)
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);
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if (pointsInstance != databases[procI].timeName())
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{
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FatalErrorIn(args.executable())
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<< "Your time was specified as " << databases[procI].timeName()
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<< " but there is no polyMesh/points in that time." << endl
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<< "(there is a points file in " << pointsInstance
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<< ")" << endl
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<< "Please rerun with the correct time specified"
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<< " (through the -constant, -time or -latestTime option)."
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<< endl << exit(FatalError);
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}
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Pout<< "Reading points from "
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<< databases[procI].caseName()
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<< " for time = " << databases[procI].timeName()
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<< nl << endl;
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pointIOField points
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(
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IOobject
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(
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"points",
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databases[procI].findInstance
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(
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regionPrefix/polyMesh::meshSubDir,
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"points"
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),
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regionPrefix/polyMesh::meshSubDir,
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databases[procI],
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IOobject::MUST_READ,
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IOobject::NO_WRITE,
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false
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)
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);
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boundBox domainBb(points, false);
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bb.min() = min(bb.min(), domainBb.min());
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bb.max() = max(bb.max(), domainBb.max());
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}
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const scalar mergeDist = mergeTol*mag(bb.max() - bb.min());
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Pout<< "Overall mesh bounding box : " << bb << nl
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<< "Relative tolerance : " << mergeTol << nl
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<< "Absolute matching distance : " << mergeDist << nl
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<< endl;
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// Addressing from processor to reconstructed case
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|
labelListList cellProcAddressing(nProcs);
|
||
|
|
labelListList faceProcAddressing(nProcs);
|
||
|
|
labelListList pointProcAddressing(nProcs);
|
||
|
|
labelListList boundaryProcAddressing(nProcs);
|
||
|
|
|
||
|
|
// Internal faces on the final reconstructed mesh
|
||
|
|
label masterInternalFaces;
|
||
|
|
// Owner addressing on the final reconstructed mesh
|
||
|
|
labelList masterOwner;
|
||
|
|
|
||
|
|
{
|
||
|
|
// Construct empty mesh.
|
||
|
|
Pout<< "Constructing empty mesh to add to." << nl << endl;
|
||
|
|
polyMesh masterMesh
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
regionName,
|
||
|
|
runTime.timeName(),
|
||
|
|
runTime,
|
||
|
|
IOobject::NO_READ
|
||
|
|
),
|
||
|
|
pointField(0),
|
||
|
|
faceList(0),
|
||
|
|
cellList(0)
|
||
|
|
);
|
||
|
|
|
||
|
|
for (label procI = 0; procI < nProcs; procI++)
|
||
|
|
{
|
||
|
|
Pout<< "Reading mesh to add from "
|
||
|
|
<< databases[procI].caseName()
|
||
|
|
<< " for time = " << databases[procI].timeName()
|
||
|
|
<< nl << endl;
|
||
|
|
|
||
|
|
polyMesh meshToAdd
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
regionName,
|
||
|
|
databases[procI].timeName(),
|
||
|
|
databases[procI]
|
||
|
|
)
|
||
|
|
);
|
||
|
|
|
||
|
|
// Initialize its addressing
|
||
|
|
cellProcAddressing[procI] = identity(meshToAdd.nCells());
|
||
|
|
faceProcAddressing[procI] = identity(meshToAdd.nFaces());
|
||
|
|
pointProcAddressing[procI] = identity(meshToAdd.nPoints());
|
||
|
|
boundaryProcAddressing[procI] =
|
||
|
|
identity(meshToAdd.boundaryMesh().size());
|
||
|
|
|
||
|
|
|
||
|
|
// Find geometrically shared points/faces.
|
||
|
|
autoPtr<faceCoupleInfo> couples =
|
||
|
|
determineCoupledFaces
|
||
|
|
(
|
||
|
|
fullMatch,
|
||
|
|
procI,
|
||
|
|
masterMesh,
|
||
|
|
meshToAdd,
|
||
|
|
mergeDist
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
// Add elements to mesh
|
||
|
|
Pout<< "Adding to master mesh" << nl << endl;
|
||
|
|
|
||
|
|
autoPtr<mapAddedPolyMesh> map = polyMeshAdder::add
|
||
|
|
(
|
||
|
|
masterMesh,
|
||
|
|
meshToAdd,
|
||
|
|
couples
|
||
|
|
);
|
||
|
|
|
||
|
|
// Update all addressing so xxProcAddressing points to correct item
|
||
|
|
// in masterMesh.
|
||
|
|
|
||
|
|
// Processors that were already in masterMesh
|
||
|
|
for (label mergedI = 0; mergedI < procI; mergedI++)
|
||
|
|
{
|
||
|
|
renumber(map().oldCellMap(), cellProcAddressing[mergedI]);
|
||
|
|
renumber(map().oldFaceMap(), faceProcAddressing[mergedI]);
|
||
|
|
renumber(map().oldPointMap(), pointProcAddressing[mergedI]);
|
||
|
|
// Note: boundary is special since can contain -1.
|
||
|
|
renumber(map().oldPatchMap(), boundaryProcAddressing[mergedI]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Added processor
|
||
|
|
renumber(map().addedCellMap(), cellProcAddressing[procI]);
|
||
|
|
renumber(map().addedFaceMap(), faceProcAddressing[procI]);
|
||
|
|
renumber(map().addedPointMap(), pointProcAddressing[procI]);
|
||
|
|
renumber(map().addedPatchMap(), boundaryProcAddressing[procI]);
|
||
|
|
|
||
|
|
Pout<< endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Save some properties on the reconstructed mesh
|
||
|
|
masterInternalFaces = masterMesh.nInternalFaces();
|
||
|
|
masterOwner = masterMesh.faceOwner();
|
||
|
|
|
||
|
|
|
||
|
|
Pout<< "\nWriting merged mesh to "
|
||
|
|
<< runTime.path()/runTime.timeName()
|
||
|
|
<< nl << endl;
|
||
|
|
|
||
|
|
if (!masterMesh.write())
|
||
|
|
{
|
||
|
|
FatalErrorIn(args.executable())
|
||
|
|
<< "Failed writing polyMesh."
|
||
|
|
<< exit(FatalError);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Write the addressing
|
||
|
|
|
||
|
|
Pout<< "Reconstructing the addressing from the processor meshes"
|
||
|
|
<< " to the newly reconstructed mesh" << nl << endl;
|
||
|
|
|
||
|
|
forAll(databases, procI)
|
||
|
|
{
|
||
|
|
Pout<< "Reading processor " << procI << " mesh from "
|
||
|
|
<< databases[procI].caseName() << endl;
|
||
|
|
|
||
|
|
polyMesh procMesh
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
regionName,
|
||
|
|
databases[procI].timeName(),
|
||
|
|
databases[procI]
|
||
|
|
)
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
// From processor point to reconstructed mesh point
|
||
|
|
|
||
|
|
Pout<< "Writing pointProcAddressing to "
|
||
|
|
<< databases[procI].caseName()
|
||
|
|
/procMesh.facesInstance()
|
||
|
|
/polyMesh::meshSubDir
|
||
|
|
<< endl;
|
||
|
|
|
||
|
|
labelIOList
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
"pointProcAddressing",
|
||
|
|
procMesh.facesInstance(),
|
||
|
|
polyMesh::meshSubDir,
|
||
|
|
procMesh,
|
||
|
|
IOobject::NO_READ,
|
||
|
|
IOobject::NO_WRITE,
|
||
|
|
false // do not register
|
||
|
|
),
|
||
|
|
pointProcAddressing[procI]
|
||
|
|
).write();
|
||
|
|
|
||
|
|
|
||
|
|
// From processor face to reconstructed mesh face
|
||
|
|
|
||
|
|
Pout<< "Writing faceProcAddressing to "
|
||
|
|
<< databases[procI].caseName()
|
||
|
|
/procMesh.facesInstance()
|
||
|
|
/polyMesh::meshSubDir
|
||
|
|
<< endl;
|
||
|
|
|
||
|
|
labelIOList faceProcAddr
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
"faceProcAddressing",
|
||
|
|
procMesh.facesInstance(),
|
||
|
|
polyMesh::meshSubDir,
|
||
|
|
procMesh,
|
||
|
|
IOobject::NO_READ,
|
||
|
|
IOobject::NO_WRITE,
|
||
|
|
false // do not register
|
||
|
|
),
|
||
|
|
faceProcAddressing[procI]
|
||
|
|
);
|
||
|
|
|
||
|
|
// Now add turning index to faceProcAddressing.
|
||
|
|
// See reconstrurPar for meaning of turning index.
|
||
|
|
forAll(faceProcAddr, procFaceI)
|
||
|
|
{
|
||
|
|
label masterFaceI = faceProcAddr[procFaceI];
|
||
|
|
|
||
|
|
if
|
||
|
|
(
|
||
|
|
!procMesh.isInternalFace(procFaceI)
|
||
|
|
&& masterFaceI < masterInternalFaces
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// proc face is now external but used to be internal face.
|
||
|
|
// Check if we have owner or neighbour.
|
||
|
|
|
||
|
|
label procOwn = procMesh.faceOwner()[procFaceI];
|
||
|
|
label masterOwn = masterOwner[masterFaceI];
|
||
|
|
|
||
|
|
if (cellProcAddressing[procI][procOwn] == masterOwn)
|
||
|
|
{
|
||
|
|
// No turning. Offset by 1.
|
||
|
|
faceProcAddr[procFaceI]++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Turned face.
|
||
|
|
faceProcAddr[procFaceI] =
|
||
|
|
-1 - faceProcAddr[procFaceI];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// No turning. Offset by 1.
|
||
|
|
faceProcAddr[procFaceI]++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
faceProcAddr.write();
|
||
|
|
|
||
|
|
|
||
|
|
// From processor cell to reconstructed mesh cell
|
||
|
|
|
||
|
|
Pout<< "Writing cellProcAddressing to "
|
||
|
|
<< databases[procI].caseName()
|
||
|
|
/procMesh.facesInstance()
|
||
|
|
/polyMesh::meshSubDir
|
||
|
|
<< endl;
|
||
|
|
|
||
|
|
labelIOList
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
"cellProcAddressing",
|
||
|
|
procMesh.facesInstance(),
|
||
|
|
polyMesh::meshSubDir,
|
||
|
|
procMesh,
|
||
|
|
IOobject::NO_READ,
|
||
|
|
IOobject::NO_WRITE,
|
||
|
|
false // do not register
|
||
|
|
),
|
||
|
|
cellProcAddressing[procI]
|
||
|
|
).write();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// From processor patch to reconstructed mesh patch
|
||
|
|
|
||
|
|
Pout<< "Writing boundaryProcAddressing to "
|
||
|
|
<< databases[procI].caseName()
|
||
|
|
/procMesh.facesInstance()
|
||
|
|
/polyMesh::meshSubDir
|
||
|
|
<< endl;
|
||
|
|
|
||
|
|
labelIOList
|
||
|
|
(
|
||
|
|
IOobject
|
||
|
|
(
|
||
|
|
"boundaryProcAddressing",
|
||
|
|
procMesh.facesInstance(),
|
||
|
|
polyMesh::meshSubDir,
|
||
|
|
procMesh,
|
||
|
|
IOobject::NO_READ,
|
||
|
|
IOobject::NO_WRITE,
|
||
|
|
false // do not register
|
||
|
|
),
|
||
|
|
boundaryProcAddressing[procI]
|
||
|
|
).write();
|
||
|
|
|
||
|
|
Pout<< endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
Pout<< "End.\n" << endl;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ************************************************************************* //
|