379 lines
9.8 KiB
C
379 lines
9.8 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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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
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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 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Application
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blockMesh
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Description
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A multi-block mesh generator.
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Uses the block mesh description found in
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\a constant/polyMesh/blockMeshDict
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(or \a constant/\<region\>/polyMesh/blockMeshDict).
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Usage
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- blockMesh [OPTION]
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\param -blockTopology \n
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Write the topology as a set of edges in OBJ format.
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\param -region \<name\> \n
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Specify an alternative mesh region.
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\param -dict \<filename\> \n
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Specify alternative dictionary for the block mesh description.
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\*---------------------------------------------------------------------------*/
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#include "objectRegistry.H"
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#include "foamTime.H"
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#include "IOdictionary.H"
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#include "IOPtrList.H"
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#include "blockMesh.H"
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#include "preservePatchTypes.H"
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#include "emptyPolyPatch.H"
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#include "cellSet.H"
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#include "argList.H"
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#include "OSspecific.H"
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#include "OFstream.H"
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#include "Pair.H"
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#include "mapPolyMesh.H"
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#include "polyTopoChanger.H"
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#include "slidingInterface.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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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("blockTopology", "");
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argList::validOptions.insert("dict", "dictionary");
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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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const word dictName("blockMeshDict");
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word regionName;
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fileName polyMeshDir;
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if (args.optionFound("region"))
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{
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// constant/<region>/polyMesh/blockMeshDict
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regionName = args.option("region");
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polyMeshDir = regionName/polyMesh::meshSubDir;
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Info<< nl << "Generating mesh for region " << regionName << endl;
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}
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else
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{
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// constant/polyMesh/blockMeshDict
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regionName = polyMesh::defaultRegion;
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polyMeshDir = polyMesh::meshSubDir;
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}
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autoPtr<IOobject> meshDictIoPtr;
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if (args.optionFound("dict"))
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{
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fileName dictPath(args.option("dict"));
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meshDictIoPtr.set
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(
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new IOobject
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(
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(
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isDir(dictPath)
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? dictPath/dictName
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: dictPath
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),
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runTime,
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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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}
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else
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{
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meshDictIoPtr.set
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(
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new IOobject
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(
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dictName,
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runTime.constant(),
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polyMeshDir,
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runTime,
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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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}
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if (!meshDictIoPtr->headerOk())
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{
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FatalErrorIn(args.executable())
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<< "Cannot open mesh description file\n "
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<< meshDictIoPtr->objectPath()
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<< nl
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<< exit(FatalError);
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}
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Info<< nl << "Creating block mesh from\n "
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<< meshDictIoPtr->objectPath() << nl << endl;
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blockMesh::verbose(true);
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IOdictionary meshDict(meshDictIoPtr());
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blockMesh blocks(meshDict, regionName);
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if (args.optionFound("blockTopology"))
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{
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// Write mesh as edges.
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{
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fileName objMeshFile("blockTopology.obj");
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OFstream str(runTime.path()/objMeshFile);
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Info<< nl << "Dumping block structure as Lightwave obj format"
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<< " to " << objMeshFile << endl;
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blocks.writeTopology(str);
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}
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// Write centres of blocks
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{
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fileName objCcFile("blockCentres.obj");
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OFstream str(runTime.path()/objCcFile);
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Info<< nl << "Dumping block centres as Lightwave obj format"
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<< " to " << objCcFile << endl;
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const polyMesh& topo = blocks.topology();
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const pointField& cellCentres = topo.cellCentres();
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forAll(cellCentres, cellI)
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{
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//point cc = b.blockShape().centre(b.points());
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const point& cc = cellCentres[cellI];
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str << "v " << cc.x() << ' ' << cc.y() << ' ' << cc.z() << nl;
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}
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}
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Info<< nl << "end" << endl;
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return 0;
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}
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Info<< nl << "Creating polyMesh from blockMesh" << endl;
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word defaultFacesName = "defaultFaces";
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word defaultFacesType = emptyPolyPatch::typeName;
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polyMesh mesh
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(
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IOobject
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(
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regionName,
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runTime.constant(),
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runTime
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),
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xferCopy(blocks.points()), // could we re-use space?
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blocks.cells(),
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blocks.patches(),
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blocks.patchNames(),
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blocks.patchDicts(),
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defaultFacesName,
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defaultFacesType
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);
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// Read in a list of dictionaries for the merge patch pairs
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if (meshDict.found("mergePatchPairs"))
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{
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List<Pair<word> > mergePatchPairs
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(
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meshDict.lookup("mergePatchPairs")
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);
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# include "mergePatchPairs.H"
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}
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else
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{
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Info<< nl << "There are no merge patch pairs edges" << endl;
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}
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// Set any cellZones (note: cell labelling unaffected by above
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// mergePatchPairs)
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label nZones = blocks.numZonedBlocks();
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if (nZones > 0)
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{
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Info<< nl << "Adding cell zones" << endl;
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// Map from zoneName to cellZone index
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HashTable<label> zoneMap(nZones);
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// Cells per zone.
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List<DynamicList<label> > zoneCells(nZones);
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// Running cell counter
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label cellI = 0;
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// Largest zone so far
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label freeZoneI = 0;
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forAll(blocks, blockI)
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{
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const block& b = blocks[blockI];
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const labelListList& blockCells = b.cells();
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const word& zoneName = b.blockDef().zoneName();
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if (zoneName.size())
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{
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HashTable<label>::const_iterator iter = zoneMap.find(zoneName);
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label zoneI;
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if (iter == zoneMap.end())
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{
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zoneI = freeZoneI++;
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Info<< " " << zoneI << '\t' << zoneName << endl;
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zoneMap.insert(zoneName, zoneI);
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}
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else
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{
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zoneI = iter();
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}
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forAll(blockCells, i)
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{
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zoneCells[zoneI].append(cellI++);
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}
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}
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else
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{
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cellI += b.cells().size();
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}
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}
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List<cellZone*> cz(zoneMap.size());
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Info<< nl << "Writing cell zones as cellSets" << endl;
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forAllConstIter(HashTable<label>, zoneMap, iter)
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{
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label zoneI = iter();
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cz[zoneI] = new cellZone
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(
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iter.key(),
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zoneCells[zoneI].shrink(),
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zoneI,
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mesh.cellZones()
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);
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// Write as cellSet for ease of processing
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cellSet cset
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(
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mesh,
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iter.key(),
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labelHashSet(zoneCells[zoneI].shrink())
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);
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cset.write();
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}
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mesh.pointZones().setSize(0);
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mesh.faceZones().setSize(0);
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mesh.cellZones().setSize(0);
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mesh.addZones(List<pointZone*>(0), List<faceZone*>(0), cz);
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}
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// Set the precision of the points data to 10
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IOstream::defaultPrecision(max(10u, IOstream::defaultPrecision()));
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Info<< nl << "Writing polyMesh" << endl;
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mesh.removeFiles();
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if (!mesh.write())
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{
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FatalErrorIn(args.executable())
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<< "Failed writing polyMesh."
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<< exit(FatalError);
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}
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//
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// write some information
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//
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{
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const polyPatchList& patches = mesh.boundaryMesh();
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Info<< "----------------" << nl
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<< "Mesh Information" << nl
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<< "----------------" << nl
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<< " " << "boundingBox: " << boundBox(mesh.points()) << nl
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<< " " << "nPoints: " << mesh.nPoints() << nl
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<< " " << "nCells: " << mesh.nCells() << nl
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<< " " << "nFaces: " << mesh.nFaces() << nl
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<< " " << "nInternalFaces: " << mesh.nInternalFaces() << nl;
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Info<< "----------------" << nl
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<< "Patches" << nl
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<< "----------------" << nl;
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forAll(patches, patchI)
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{
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const polyPatch& p = patches[patchI];
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Info<< " " << "patch " << patchI
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<< " (start: " << p.start()
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<< " size: " << p.size()
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<< ") name: " << p.name()
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<< nl;
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}
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}
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Info<< "\nEnd\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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