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

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C

/*---------------------------------------------------------------------------*\
========= |
\\ / 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
This file is part of foam-extend.
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
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
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
along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
Description
Utility to create patches out of selected boundary faces. Faces come either
from existing patches or from a faceSet.
More specifically it:
- creates new patches (from selected boundary faces). Synchronise faces
on coupled patches.
- synchronises points on coupled boundaries
- remove patches with 0 faces in them
\*---------------------------------------------------------------------------*/
#include "cyclicPolyPatch.H"
#include "syncTools.H"
#include "argList.H"
#include "polyMesh.H"
#include "foamTime.H"
#include "SortableList.H"
#include "OFstream.H"
#include "meshTools.H"
#include "faceSet.H"
#include "IOPtrList.H"
#include "mapPolyMesh.H"
#include "directTopoChange.H"
#include "polyModifyFace.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
defineTemplateTypeNameAndDebug(IOPtrList<dictionary>, 0);
}
// Combine operator to synchronise points. We choose point nearest to origin so
// we can use e.g. great,great,great as null value.
class nearestEqOp
{
public:
void operator()(vector& x, const vector& y) const
{
if (magSqr(y) < magSqr(x))
{
x = y;
}
}
};
void changePatchID
(
const polyMesh& mesh,
const label faceID,
const label patchID,
directTopoChange& meshMod
)
{
const label zoneID = mesh.faceZones().whichZone(faceID);
bool zoneFlip = false;
if (zoneID >= 0)
{
const faceZone& fZone = mesh.faceZones()[zoneID];
zoneFlip = fZone.flipMap()[fZone.whichFace(faceID)];
}
meshMod.setAction
(
polyModifyFace
(
mesh.faces()[faceID], // face
faceID, // face ID
mesh.faceOwner()[faceID], // owner
-1, // neighbour
false, // flip flux
patchID, // patch ID
false, // remove from zone
zoneID, // zone ID
zoneFlip // zone flip
)
);
}
// Filter out the empty patches.
void filterPatches(polyMesh& mesh)
{
const polyBoundaryMesh& patches = mesh.boundaryMesh();
// Patches to keep
DynamicList<polyPatch*> allPatches(patches.size());
label nOldPatches = returnReduce(patches.size(), sumOp<label>());
// Copy old patches.
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
// Note: reduce possible since non-proc patches guaranteed in same order
if (!isA<processorPolyPatch>(pp))
{
if (returnReduce(pp.size(), sumOp<label>()) > 0)
{
allPatches.append
(
pp.clone
(
patches,
allPatches.size(),
pp.size(),
pp.start()
).ptr()
);
}
else
{
Info<< "Removing empty patch " << pp.name() << " at position "
<< patchI << endl;
}
}
}
// Copy non-empty processor patches
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if (isA<processorPolyPatch>(pp))
{
if (pp.size())
{
allPatches.append
(
pp.clone
(
patches,
allPatches.size(),
pp.size(),
pp.start()
).ptr()
);
}
else
{
Info<< "Removing empty processor patch " << pp.name()
<< " at position " << patchI << endl;
}
}
}
label nAllPatches = returnReduce(allPatches.size(), sumOp<label>());
if (nAllPatches != nOldPatches)
{
Info<< "Removing patches." << endl;
allPatches.shrink();
mesh.removeBoundary();
mesh.addPatches(allPatches);
}
else
{
Info<< "No patches removed." << endl;
}
}
// Dump for all patches the current match
void dumpCyclicMatch(const fileName& prefix, const polyMesh& mesh)
{
const polyBoundaryMesh& patches = mesh.boundaryMesh();
forAll(patches, patchI)
{
if (isA<cyclicPolyPatch>(patches[patchI]))
{
const cyclicPolyPatch& cycPatch =
refCast<const cyclicPolyPatch>(patches[patchI]);
label halfSize = cycPatch.size()/2;
// Dump halves
{
OFstream str(prefix+cycPatch.name()+"_half0.obj");
Pout<< "Dumping " << cycPatch.name()
<< " half0 faces to " << str.name() << endl;
meshTools::writeOBJ
(
str,
static_cast<faceList>
(
SubList<face>
(
cycPatch,
halfSize
)
),
cycPatch.points()
);
}
{
OFstream str(prefix+cycPatch.name()+"_half1.obj");
Pout<< "Dumping " << cycPatch.name()
<< " half1 faces to " << str.name() << endl;
meshTools::writeOBJ
(
str,
static_cast<faceList>
(
SubList<face>
(
cycPatch,
halfSize,
halfSize
)
),
cycPatch.points()
);
}
// Lines between corresponding face centres
OFstream str(prefix+cycPatch.name()+"_match.obj");
label vertI = 0;
Pout<< "Dumping cyclic match as lines between face centres to "
<< str.name() << endl;
for (label faceI = 0; faceI < halfSize; faceI++)
{
const point& fc0 = mesh.faceCentres()[cycPatch.start()+faceI];
meshTools::writeOBJ(str, fc0);
vertI++;
label nbrFaceI = halfSize + faceI;
const point& fc1 =
mesh.faceCentres()[cycPatch.start()+nbrFaceI];
meshTools::writeOBJ(str, fc1);
vertI++;
str<< "l " << vertI-1 << ' ' << vertI << nl;
}
}
}
}
void separateList
(
const vectorField& separation,
UList<vector>& field
)
{
if (separation.size() == 1)
{
// Single value for all.
forAll(field, i)
{
field[i] += separation[0];
}
}
else if (separation.size() == field.size())
{
forAll(field, i)
{
field[i] += separation[i];
}
}
else
{
FatalErrorIn
(
"separateList(const vectorField&, UList<vector>&)"
) << "Sizes of field and transformation not equal. field:"
<< field.size() << " transformation:" << separation.size()
<< abort(FatalError);
}
}
// Synchronise points on both sides of coupled boundaries.
template <class CombineOp>
void syncPoints
(
const polyMesh& mesh,
pointField& points,
const CombineOp& cop,
const point& nullValue
)
{
if (points.size() != mesh.nPoints())
{
FatalErrorIn
(
"syncPoints"
"(const polyMesh&, pointField&, const CombineOp&, const point&)"
) << "Number of values " << points.size()
<< " is not equal to the number of points in the mesh "
<< mesh.nPoints() << abort(FatalError);
}
const polyBoundaryMesh& patches = mesh.boundaryMesh();
// Is there any coupled patch with transformation?
bool hasTransformation = false;
if (Pstream::parRun())
{
// Send
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if
(
isA<processorPolyPatch>(pp)
&& pp.nPoints() > 0
&& refCast<const processorPolyPatch>(pp).owner()
)
{
const processorPolyPatch& procPatch =
refCast<const processorPolyPatch>(pp);
// Get data per patchPoint in neighbouring point numbers.
pointField patchInfo(procPatch.nPoints(), nullValue);
const labelList& meshPts = procPatch.meshPoints();
const labelList& nbrPts = procPatch.neighbPoints();
forAll(nbrPts, pointI)
{
label nbrPointI = nbrPts[pointI];
if (nbrPointI >= 0 && nbrPointI < patchInfo.size())
{
patchInfo[nbrPointI] = points[meshPts[pointI]];
}
}
OPstream toNbr(Pstream::blocking, procPatch.neighbProcNo());
toNbr << patchInfo;
}
}
// Receive and set.
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if
(
isA<processorPolyPatch>(pp)
&& pp.nPoints() > 0
&& !refCast<const processorPolyPatch>(pp).owner()
)
{
const processorPolyPatch& procPatch =
refCast<const processorPolyPatch>(pp);
pointField nbrPatchInfo(procPatch.nPoints());
{
// We do not know the number of points on the other side
// so cannot use Pstream::read.
IPstream fromNbr
(
Pstream::blocking,
procPatch.neighbProcNo()
);
fromNbr >> nbrPatchInfo;
}
// Null any value which is not on neighbouring processor
nbrPatchInfo.setSize(procPatch.nPoints(), nullValue);
if (!procPatch.parallel())
{
hasTransformation = true;
transformList(procPatch.forwardT(), nbrPatchInfo);
}
else if (procPatch.separated())
{
hasTransformation = true;
separateList(-procPatch.separation(), nbrPatchInfo);
}
const labelList& meshPts = procPatch.meshPoints();
forAll(meshPts, pointI)
{
label meshPointI = meshPts[pointI];
points[meshPointI] = nbrPatchInfo[pointI];
}
}
}
}
// Do the cyclics.
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if (isA<cyclicPolyPatch>(pp))
{
const cyclicPolyPatch& cycPatch =
refCast<const cyclicPolyPatch>(pp);
const edgeList& coupledPoints = cycPatch.coupledPoints();
const labelList& meshPts = cycPatch.meshPoints();
pointField half0Values(coupledPoints.size());
forAll(coupledPoints, i)
{
const edge& e = coupledPoints[i];
label point0 = meshPts[e[0]];
half0Values[i] = points[point0];
}
if (!cycPatch.parallel())
{
hasTransformation = true;
transformList(cycPatch.reverseT(), half0Values);
}
else if (cycPatch.separated())
{
hasTransformation = true;
const vectorField& v = cycPatch.coupledPolyPatch::separation();
separateList(v, half0Values);
}
forAll(coupledPoints, i)
{
const edge& e = coupledPoints[i];
label point1 = meshPts[e[1]];
points[point1] = half0Values[i];
}
}
}
//- Note: hasTransformation is only used for warning messages so
// reduction not strictly nessecary.
//reduce(hasTransformation, orOp<bool>());
// Synchronize multiple shared points.
const globalMeshData& pd = mesh.globalData();
if (pd.nGlobalPoints() > 0)
{
if (hasTransformation)
{
WarningIn
(
"syncPoints"
"(const polyMesh&, pointField&, const CombineOp&, const point&)"
) << "There are decomposed cyclics in this mesh with"
<< " transformations." << endl
<< "This is not supported. The result will be incorrect"
<< endl;
}
// Values on shared points.
pointField sharedPts(pd.nGlobalPoints(), nullValue);
forAll(pd.sharedPointLabels(), i)
{
label meshPointI = pd.sharedPointLabels()[i];
// Fill my entries in the shared points
sharedPts[pd.sharedPointAddr()[i]] = points[meshPointI];
}
// Combine on master.
Pstream::listCombineGather(sharedPts, cop);
Pstream::listCombineScatter(sharedPts);
// Now we will all have the same information. Merge it back with
// my local information.
forAll(pd.sharedPointLabels(), i)
{
label meshPointI = pd.sharedPointLabels()[i];
points[meshPointI] = sharedPts[pd.sharedPointAddr()[i]];
}
}
}
// Main program:
int main(int argc, char *argv[])
{
# include "addRegionOption.H"
argList::validOptions.insert("overwrite", "");
# include "setRootCase.H"
# include "createTime.H"
runTime.functionObjects().off();
Foam::word meshRegionName = polyMesh::defaultRegion;
args.optionReadIfPresent("region", meshRegionName);
const bool overwrite = args.optionFound("overwrite");
Info<< "Reading createPatchDict." << nl << endl;
IOdictionary dict
(
IOobject
(
"createPatchDict",
runTime.system(),
(
meshRegionName != polyMesh::defaultRegion
? meshRegionName
: word::null
),
runTime,
IOobject::MUST_READ,
IOobject::NO_WRITE,
false
)
);
// Whether to synchronise points
const Switch pointSync(dict.lookup("pointSync"));
// Change tolerance in controlDict instead. HJ, 22/Oct/2008
// Set the matching tolerance so we can read illegal meshes
// scalar tol = readScalar(dict.lookup("matchTolerance"));
// Info<< "Using relative tolerance " << tol
// << " to match up faces and points" << nl << endl;
// polyPatch::matchTol_ = tol;
# include "createNamedPolyMesh.H"
const word oldInstance = mesh.pointsInstance();
const polyBoundaryMesh& patches = mesh.boundaryMesh();
// If running parallel check same patches everywhere
patches.checkParallelSync(true);
dumpCyclicMatch("initial_", mesh);
// Read patch construct info from dictionary
PtrList<dictionary> patchSources(dict.lookup("patchInfo"));
// 1. Add all new patches
// ~~~~~~~~~~~~~~~~~~~~~~
if (patchSources.size())
{
// Old and new patches.
DynamicList<polyPatch*> allPatches(patches.size()+patchSources.size());
label startFaceI = mesh.nInternalFaces();
// Copy old patches.
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if (!isA<processorPolyPatch>(pp))
{
allPatches.append
(
pp.clone
(
patches,
patchI,
pp.size(),
startFaceI
).ptr()
);
startFaceI += pp.size();
}
}
forAll(patchSources, addedI)
{
const dictionary& dict = patchSources[addedI];
word patchName(dict.lookup("name"));
label destPatchI = patches.findPatchID(patchName);
if (destPatchI == -1)
{
dictionary patchDict(dict.subDict("dictionary"));
destPatchI = allPatches.size();
Info<< "Adding new patch " << patchName
<< " as patch " << destPatchI
<< " from " << patchDict << endl;
patchDict.set("nFaces", 0);
patchDict.set("startFace", startFaceI);
// Add an empty patch.
allPatches.append
(
polyPatch::New
(
patchName,
patchDict,
destPatchI,
patches
).ptr()
);
}
}
// Copy old patches.
forAll(patches, patchI)
{
const polyPatch& pp = patches[patchI];
if (isA<processorPolyPatch>(pp))
{
allPatches.append
(
pp.clone
(
patches,
patchI,
pp.size(),
startFaceI
).ptr()
);
startFaceI += pp.size();
}
}
allPatches.shrink();
mesh.removeBoundary();
mesh.addPatches(allPatches);
Info<< endl;
}
// 2. Repatch faces
// ~~~~~~~~~~~~~~~~
directTopoChange meshMod(mesh);
forAll(patchSources, addedI)
{
const dictionary& dict = patchSources[addedI];
word patchName(dict.lookup("name"));
label destPatchI = patches.findPatchID(patchName);
if (destPatchI == -1)
{
FatalErrorIn(args.executable()) << "patch " << patchName
<< " not added. Problem." << abort(FatalError);
}
word sourceType(dict.lookup("constructFrom"));
if (sourceType == "patches")
{
labelHashSet patchSources(patches.patchSet(dict.lookup("patches")));
// Repatch faces of the patches.
forAllConstIter(labelHashSet, patchSources, iter)
{
const polyPatch& pp = patches[iter.key()];
Info<< "Moving faces from patch " << pp.name()
<< " to patch " << destPatchI << endl;
forAll(pp, i)
{
changePatchID
(
mesh,
pp.start() + i,
destPatchI,
meshMod
);
}
}
}
else if (sourceType == "set")
{
word setName(dict.lookup("set"));
faceSet faces(mesh, setName);
Info<< "Read " << returnReduce(faces.size(), sumOp<label>())
<< " faces from faceSet " << faces.name() << endl;
// Sort (since faceSet contains faces in arbitrary order)
labelList faceLabels(faces.toc());
SortableList<label> patchFaces(faceLabels);
forAll(patchFaces, i)
{
label faceI = patchFaces[i];
if (mesh.isInternalFace(faceI))
{
FatalErrorIn(args.executable())
<< "Face " << faceI << " specified in set "
<< faces.name()
<< " is not an external face of the mesh." << endl
<< "This application can only repatch existing boundary"
<< " faces." << exit(FatalError);
}
changePatchID
(
mesh,
faceI,
destPatchI,
meshMod
);
}
}
else
{
FatalErrorIn(args.executable())
<< "Invalid source type " << sourceType << endl
<< "Valid source types are 'patches' 'set'" << exit(FatalError);
}
}
Info<< endl;
// Change mesh, use inflation to reforce calculation of transformation
// tensors.
Info<< "Doing topology modification to order faces." << nl << endl;
autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh, true);
mesh.movePoints(map().preMotionPoints());
dumpCyclicMatch("coupled_", mesh);
// Synchronise points.
if (!pointSync)
{
Info<< "Not synchronising points." << nl << endl;
}
else
{
Info<< "Synchronising points." << nl << endl;
// This is a bit tricky. Both normal and position might be out and
// current separation also includes the normal
// ( separation_ = (nf&(Cr - Cf))*nf ).
// For processor patches:
// - disallow multiple separation/transformation. This basically
// excludes decomposed cyclics. Use the (probably 0) separation
// to align the points.
// For cyclic patches:
// - for separated ones use our own recalculated offset vector
// - for rotational ones use current one.
forAll(mesh.boundaryMesh(), patchI)
{
const polyPatch& pp = mesh.boundaryMesh()[patchI];
if (pp.size() && isA<coupledPolyPatch>(pp))
{
const coupledPolyPatch& cpp =
refCast<const coupledPolyPatch>(pp);
if (cpp.separated())
{
Info<< "On coupled patch " << pp.name()
<< " separation[0] was "
<< cpp.separation()[0] << endl;
if (isA<cyclicPolyPatch>(pp))
{
const cyclicPolyPatch& cycpp =
refCast<const cyclicPolyPatch>(pp);
if (cycpp.transform() == cyclicPolyPatch::TRANSLATIONAL)
{
Info<< "On cyclic translation patch " << pp.name()
<< " forcing uniform separation of "
<< cycpp.separationVector() << endl;
const_cast<vectorField&>(cpp.separation()) =
pointField(1, cycpp.separationVector());
}
else
{
const_cast<vectorField&>(cpp.separation()) =
pointField
(
1,
pp[pp.size()/2].centre(mesh.points())
- pp[0].centre(mesh.points())
);
}
}
else
{
const_cast<vectorField&>(cpp.separation())
.setSize(1);
}
Info<< "On coupled patch " << pp.name()
<< " forcing uniform separation of "
<< cpp.separation() << endl;
}
else if (!cpp.parallel())
{
Info<< "On coupled patch " << pp.name()
<< " forcing uniform rotation of "
<< cpp.forwardT()[0] << endl;
const_cast<tensorField&>
(
cpp.forwardT()
).setSize(1);
const_cast<tensorField&>
(
cpp.reverseT()
).setSize(1);
Info<< "On coupled patch " << pp.name()
<< " forcing uniform rotation of "
<< cpp.forwardT() << endl;
}
}
}
Info<< "Synchronising points." << endl;
pointField newPoints(mesh.points());
syncPoints
(
mesh,
newPoints,
nearestEqOp(),
point(GREAT, GREAT, GREAT)
);
scalarField diff(mag(newPoints-mesh.points()));
Info<< "Points changed by average:" << gAverage(diff)
<< " max:" << gMax(diff) << nl << endl;
mesh.movePoints(newPoints);
}
// 3. Remove zeros-sized patches
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Info<< "Removing patches with no faces in them." << nl<< endl;
filterPatches(mesh);
dumpCyclicMatch("final_", mesh);
// Set the precision of the points data to 10
IOstream::defaultPrecision(10);
if (!overwrite)
{
runTime++;
}
else
{
mesh.setInstance(oldInstance);
}
// Write resulting mesh
Info<< "Writing repatched mesh to " << runTime.timeName() << nl << endl;
mesh.write();
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //