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point merging

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This commit is contained in:
mattijs 2008-10-14 17:05:21 +01:00
parent c1cb8b6dbc
commit d8c44047bf
1 changed files with 99 additions and 22 deletions
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121
applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C
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@ -46,6 +46,8 @@ Description
#include "mapAddedPolyMesh.H"
#include "polyMeshAdder.H"
#include "faceCoupleInfo.H"
#include "fvMeshAdder.H"
#include "polyTopoChange.H"
using namespace Foam;
@ -203,6 +205,78 @@ autoPtr<faceCoupleInfo> determineCoupledFaces
}
autoPtr<mapPolyMesh> mergeSharedPoints
(
const scalar mergeDist,
polyMesh& mesh,
labelListList& pointProcAddressing
)
{
// Find out which sets of points get merged and create a map from
// mesh point to unique point.
Map<label> pointToMaster
(
fvMeshAdder::findSharedPoints
(
mesh,
mergeDist
)
);
Info<< "mergeSharedPoints : detected " << pointToMaster.size()
<< " points that are to be merged." << endl;
if (returnReduce(pointToMaster.size(), sumOp<label>()) == 0)
{
return autoPtr<mapPolyMesh>(NULL);
}
polyTopoChange meshMod(mesh);
fvMeshAdder::mergePoints(mesh, pointToMaster, meshMod);
// Change the mesh (no inflation). Note: parallel comms allowed.
autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh, false, true);
// Update fields. No inflation, parallel sync.
mesh.updateMesh(map);
// pointProcAddressing give indices into the master mesh so adapt them
// for changed point numbering.
// Adapt constructMaps for merged points.
forAll(pointProcAddressing, procI)
{
labelList& constructMap = pointProcAddressing[procI];
forAll(constructMap, i)
{
label oldPointI = constructMap[i];
// New label of point after changeMesh.
label newPointI = map().reversePointMap()[oldPointI];
if (newPointI < -1)
{
constructMap[i] = -newPointI-2;
}
else if (newPointI >= 0)
{
constructMap[i] = newPointI;
}
else
{
FatalErrorIn("fvMeshDistribute::mergeSharedPoints()")
<< "Problem. oldPointI:" << oldPointI
<< " newPointI:" << newPointI << abort(FatalError);
}
}
}
return map;
}
int main(int argc, char *argv[])
{
argList::noParallel();
@ -214,7 +288,7 @@ int main(int argc, char *argv[])
# include "setRootCase.H"
# include "createTime.H"
Pout<< "This is an experimental tool which tries to merge"
Info<< "This is an experimental tool which tries to merge"
<< " individual processor" << nl
<< "meshes back into one master mesh. Use it if the original"
<< " master mesh has" << nl
@ -246,7 +320,7 @@ int main(int argc, char *argv[])
}
scalar writeTol = Foam::pow(10.0, -scalar(IOstream::defaultPrecision()));
Pout<< "Merge tolerance : " << mergeTol << nl
Info<< "Merge tolerance : " << mergeTol << nl
<< "Write tolerance : " << writeTol << endl;
if (runTime.writeFormat() == IOstream::ASCII && mergeTol < writeTol)
@ -267,11 +341,11 @@ int main(int argc, char *argv[])
if (fullMatch)
{
Pout<< "Doing geometric matching on all boundary faces." << nl << endl;
Info<< "Doing geometric matching on all boundary faces." << nl << endl;
}
else
{
Pout<< "Doing geometric matching on correct procBoundaries only."
Info<< "Doing geometric matching on correct procBoundaries only."
<< nl << "This assumes a correct decomposition." << endl;
}
@ -292,7 +366,7 @@ int main(int argc, char *argv[])
nProcs++;
}
Pout<< "Found " << nProcs << " processor directories" << nl << endl;
Info<< "Found " << nProcs << " processor directories" << nl << endl;
// Read all databases.
@ -300,7 +374,7 @@ int main(int argc, char *argv[])
forAll (databases, procI)
{
Pout<< "Reading database "
Info<< "Reading database "
<< args.caseName()/fileName(word("processor") + name(procI))
<< endl;
@ -337,7 +411,7 @@ int main(int argc, char *argv[])
}
// Set master time
Pout<< "Setting master time to " << databases[0].timeName() << nl << endl;
Info<< "Setting master time to " << databases[0].timeName() << nl << endl;
runTime.setTime(databases[0]);
@ -373,7 +447,7 @@ int main(int argc, char *argv[])
<< endl << exit(FatalError);
}
Pout<< "Reading points from "
Info<< "Reading points from "
<< databases[procI].caseName()
<< " for time = " << databases[procI].timeName()
<< nl << endl;
@ -403,7 +477,7 @@ int main(int argc, char *argv[])
}
const scalar mergeDist = mergeTol*mag(bb.max() - bb.min());
Pout<< "Overall mesh bounding box : " << bb << nl
Info<< "Overall mesh bounding box : " << bb << nl
<< "Relative tolerance : " << mergeTol << nl
<< "Absolute matching distance : " << mergeDist << nl
<< endl;
@ -422,7 +496,7 @@ int main(int argc, char *argv[])
{
// Construct empty mesh.
Pout<< "Constructing empty mesh to add to." << nl << endl;
Info<< "Constructing empty mesh to add to." << nl << endl;
polyMesh masterMesh
(
IOobject
@ -439,7 +513,7 @@ int main(int argc, char *argv[])
for (label procI = 0; procI < nProcs; procI++)
{
Pout<< "Reading mesh to add from "
Info<< "Reading mesh to add from "
<< databases[procI].caseName()
<< " for time = " << databases[procI].timeName()
<< nl << endl;
@ -475,7 +549,7 @@ int main(int argc, char *argv[])
// Add elements to mesh
Pout<< "Adding to master mesh" << nl << endl;
Info<< "Adding to master mesh" << nl << endl;
autoPtr<mapAddedPolyMesh> map = polyMeshAdder::add
(
@ -503,16 +577,19 @@ int main(int argc, char *argv[])
renumber(map().addedPointMap(), pointProcAddressing[procI]);
renumber(map().addedPatchMap(), boundaryProcAddressing[procI]);
Pout<< endl;
Info<< endl;
}
// See if any points on the mastermesh have become connected
// because of connections through processor meshes.
mergeSharedPoints(mergeDist, masterMesh, pointProcAddressing);
// Save some properties on the reconstructed mesh
masterInternalFaces = masterMesh.nInternalFaces();
masterOwner = masterMesh.faceOwner();
Pout<< "\nWriting merged mesh to "
Info<< "\nWriting merged mesh to "
<< runTime.path()/runTime.timeName()
<< nl << endl;
@ -527,12 +604,12 @@ int main(int argc, char *argv[])
// Write the addressing
Pout<< "Reconstructing the addressing from the processor meshes"
Info<< "Reconstructing the addressing from the processor meshes"
<< " to the newly reconstructed mesh" << nl << endl;
forAll(databases, procI)
{
Pout<< "Reading processor " << procI << " mesh from "
Info<< "Reading processor " << procI << " mesh from "
<< databases[procI].caseName() << endl;
polyMesh procMesh
@ -548,7 +625,7 @@ int main(int argc, char *argv[])
// From processor point to reconstructed mesh point
Pout<< "Writing pointProcAddressing to "
Info<< "Writing pointProcAddressing to "
<< databases[procI].caseName()
/procMesh.facesInstance()
/polyMesh::meshSubDir
@ -572,7 +649,7 @@ int main(int argc, char *argv[])
// From processor face to reconstructed mesh face
Pout<< "Writing faceProcAddressing to "
Info<< "Writing faceProcAddressing to "
<< databases[procI].caseName()
/procMesh.facesInstance()
/polyMesh::meshSubDir
@ -635,7 +712,7 @@ int main(int argc, char *argv[])
// From processor cell to reconstructed mesh cell
Pout<< "Writing cellProcAddressing to "
Info<< "Writing cellProcAddressing to "
<< databases[procI].caseName()
/procMesh.facesInstance()
/polyMesh::meshSubDir
@ -660,7 +737,7 @@ int main(int argc, char *argv[])
// From processor patch to reconstructed mesh patch
Pout<< "Writing boundaryProcAddressing to "
Info<< "Writing boundaryProcAddressing to "
<< databases[procI].caseName()
/procMesh.facesInstance()
/polyMesh::meshSubDir
@ -681,10 +758,10 @@ int main(int argc, char *argv[])
boundaryProcAddressing[procI]
).write();
Pout<< endl;
Info<< endl;
}
Pout<< "End.\n" << endl;
Info<< "End.\n" << endl;
return 0;
}