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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2023 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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 "VTKsurfaceFormat.H"
#include "vtkUnstructuredReader.H"
#include "scalarIOField.H"
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
template<class Face>
void Foam::fileFormats::VTKsurfaceFormat<Face>::writeHeaderPolygons
(
Ostream& os,
const UList<Face>& faceLst
)
{
label nNodes = 0;
forAll(faceLst, facei)
{
nNodes += faceLst[facei].size();
}
os << nl
<< "POLYGONS " << faceLst.size() << ' '
<< faceLst.size() + nNodes << nl;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
template<class Face>
Foam::fileFormats::VTKsurfaceFormat<Face>::VTKsurfaceFormat
(
const fileName& filename
)
{
read(filename);
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class Face>
bool Foam::fileFormats::VTKsurfaceFormat<Face>::read
(
const fileName& filename
)
{
const bool mustTriangulate = this->isTri();
this->clear();
IFstream is(filename);
if (!is.good())
{
FatalErrorInFunction
<< "Cannot read file " << filename
<< exit(FatalError);
}
// assume that the groups are not intermixed
bool sorted = true;
// Construct dummy time so we have something to create an objectRegistry
// from
Time dummyTime
(
"dummyRoot",
"dummyCase",
false // enableFunctionObjects
);
// Make dummy object registry
objectRegistry obr
(
IOobject
(
"dummy",
dummyTime,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
)
);
// Read all
vtkUnstructuredReader reader(obr, is);
const faceList& faces = reader.faces();
// Assume all faces in zone0 unless a region field is present
labelList zones(faces.size(), 0);
if (reader.cellData().foundObject<scalarIOField>("region"))
{
const scalarIOField& region =
reader.cellData().lookupObject<scalarIOField>
(
"region"
);
forAll(region, i)
{
zones[i] = label(region[i]);
}
}
else if (reader.cellData().foundObject<scalarIOField>("STLSolidLabeling"))
{
const scalarIOField& region =
reader.cellData().lookupObject<scalarIOField>
(
"STLSolidLabeling"
);
forAll(region, i)
{
zones[i] = label(region[i]);
}
}
// Create zone names
const label nZones = max(zones)+1;
wordList zoneNames(nZones);
forAll(zoneNames, i)
{
zoneNames[i] = "zone" + Foam::name(i);
}
// See if needs triangulation
label nTri = 0;
if (mustTriangulate)
{
forAll(faces, facei)
{
nTri += faces[facei].size()-2;
}
}
if (nTri > 0)
{
DynamicList<Face> dynFaces(nTri);
DynamicList<label> dynZones(nTri);
forAll(faces, facei)
{
const face& f = faces[facei];
for (label fp1 = 1; fp1 < f.size() - 1; fp1++)
{
label fp2 = f.fcIndex(fp1);
dynFaces.append(triFace(f[0], f[fp1], f[fp2]));
dynZones.append(zones[facei]);
}
}
// Count
labelList zoneSizes(nZones, 0);
forAll(dynZones, triI)
{
zoneSizes[dynZones[triI]]++;
}
this->sortFacesAndStore(move(dynFaces), move(dynZones), sorted);
// add zones, culling empty ones
this->addZones(zoneSizes, zoneNames, true);
}
else
{
DynamicList<Face> dynFaces(faces.size());
forAll(faces, facei)
{
const face& f = faces[facei];
dynFaces.append(Face(f));
}
// Count
labelList zoneSizes(nZones, 0);
forAll(zones, facei)
{
zoneSizes[zones[facei]]++;
}
this->sortFacesAndStore(move(dynFaces), move(zones), sorted);
// add zones, culling empty ones
this->addZones(zoneSizes, zoneNames, true);
}
// transfer to normal lists
this->storedPoints().transfer(reader.points());
return true;
}
template<class Face>
void Foam::fileFormats::VTKsurfaceFormat<Face>::write
(
const fileName& filename,
const MeshedSurfaceProxy<Face>& surf
)
{
const pointField& pointLst = surf.points();
const List<Face>& faceLst = surf.faces();
const List<label>& faceMap = surf.faceMap();
const List<surfZone>& zones =
(
surf.surfZones().empty()
? surfaceFormatsCore::oneZone(faceLst)
: surf.surfZones()
);
const bool useFaceMap = (surf.useFaceMap() && zones.size() > 1);
OFstream os(filename);
if (!os.good())
{
FatalErrorInFunction
<< "Cannot open file for writing " << filename
<< exit(FatalError);
}
writeHeader(os, pointLst);
writeHeaderPolygons(os, faceLst);
label faceIndex = 0;
forAll(zones, zoneI)
{
const surfZone& zone = zones[zoneI];
if (useFaceMap)
{
forAll(zone, localFacei)
{
const Face& f = faceLst[faceMap[faceIndex++]];
os << f.size();
forAll(f, fp)
{
os << ' ' << f[fp];
}
os << ' ' << nl;
}
}
else
{
forAll(zone, localFacei)
{
const Face& f = faceLst[faceIndex++];
os << f.size();
forAll(f, fp)
{
os << ' ' << f[fp];
}
os << ' ' << nl;
}
}
}
writeTail(os, zones);
}
template<class Face>
void Foam::fileFormats::VTKsurfaceFormat<Face>::write
(
const fileName& filename,
const UnsortedMeshedSurface<Face>& surf
)
{
OFstream os(filename);
if (!os.good())
{
FatalErrorInFunction
<< "Cannot open file for writing " << filename
<< exit(FatalError);
}
const List<Face>& faceLst = surf.faces();
writeHeader(os, surf.points());
writeHeaderPolygons(os, faceLst);
forAll(faceLst, facei)
{
const Face& f = faceLst[facei];
os << f.size();
forAll(f, fp)
{
os << ' ' << f[fp];
}
os << ' ' << nl;
}
writeTail(os, surf.zoneIds());
}
// ************************************************************************* //
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