a0d7933360
- support simple mesh subsetting to vtu formats to enable debug output
for a subsection of an existing polyMesh
- rudimentary support for VTK from cellShapes is intended for handling
basic primitive cell shapes without a full blown polyMesh description.
For example,
// Create an empty polyMesh with points only
polyMesh debugMesh
(
io,
std::move(points),
faceList(), // faces
labelList(), // owner
labelList(), // neighbour
true // syncPar
);
// Establish the appropriate VTK sizing for the TET shapes
vtk::vtuCells vtuCells;
vtuCells.resetShapes(debugCutTets);
vtuCells.nPoints(debugMesh.nPoints());
NOTE
Since the vtk::internalMeshWriter only uses the polyMesh reference
for the points, it is also possible to create the vtuCells
description without a pointField (or from a different mesh
description) and write out the connectivity using the pointField
from a different mesh.
162 lines
4.3 KiB
C
162 lines
4.3 KiB
C
/*---------------------------------------------------------------------------*\
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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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2021 OpenCFD Ltd.
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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Application
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foamCellZoneToVTK.C
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Description
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Write tet-decomposed OpenFOAM mesh in VTK format.
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For diagnostic purposes.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "timeSelector.H"
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#include "Time.H"
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#include "polyMesh.H"
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#include "foamVtkInternalMeshWriter.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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argList::addNote
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(
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"Write OpenFOAM cellZone mesh to VTK"
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);
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argList::addOption
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(
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"cellZone",
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"name",
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"Convert mesh subset corresponding to specified cellZone"
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);
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argList::addBoolOption
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(
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"list",
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"List names of cellZones and exit"
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);
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timeSelector::addOptions();
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#include "setRootCase.H"
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word cellZoneName;
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args.readIfPresent("cellZone", cellZoneName);
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const bool optList = args.found("list");
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if (optList)
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{
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if (!cellZoneName.empty())
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{
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Info<< "specify -list or -cellZone, but not both!" << nl;
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return 1;
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}
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}
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else if (cellZoneName.empty())
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{
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Info<< "Did not specify a cellZone!!" << nl;
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return 1;
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}
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#include "createTime.H"
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instantList timeDirs = timeSelector::select0(runTime, args);
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fileName exportName("zonemesh-" + cellZoneName);
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#include "createPolyMesh.H"
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forAll(timeDirs, timei)
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{
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runTime.setTime(timeDirs[timei], timei);
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polyMesh::readUpdateState state = mesh.readUpdate();
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if (!timei || state != polyMesh::UNCHANGED)
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{
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fileName meshName(exportName);
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if (state != polyMesh::UNCHANGED)
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{
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meshName += '_' + runTime.timeName();
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}
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if (optList)
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{
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Info<< "cellZones:" << nl;
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for (const word& name : mesh.cellZones().names())
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{
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Info<< " " << name << nl;
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}
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}
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else
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{
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const cellZone* zonePtr =
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mesh.cellZones().cfindZone(cellZoneName);
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Info<< "cellZone " << cellZoneName;
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if (!zonePtr)
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{
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Info<< " ... not found" << nl;
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continue;
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}
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Info<< nl;
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const cellZone& zn = *zonePtr;
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// Define a subset
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vtk::vtuCells vtuCells;
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vtuCells.reset(mesh, zn);
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vtk::internalMeshWriter writer
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(
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mesh,
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vtuCells,
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fileName
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(
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mesh.time().globalPath() / meshName
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)
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);
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writer.writeGeometry();
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writer.beginCellData();
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writer.writeProcIDs();
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Info<< "Wrote " << writer.output().name() << nl;
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}
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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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