84b109219a
- Since 'bool' and 'Switch' use the _identical_ input mechanism (ie, both accept true/false, on/off, yes/no, none, 1/0), the main reason to prefer one or the other is the output. The output for Switch is as text (eg, "true"), whereas for bool it is label (0 or 1). If the output is required for a dictionary, Switch may be appropriate. If the output is not required, or is only used for Pstream exchange, bool can be more appropriate.
918 lines
26 KiB
C
918 lines
26 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 | Copyright (C) 2011-2017 OpenFOAM Foundation
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\\/ M anipulation | Copyright (C) 2016-2018 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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createPatch
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Group
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grpMeshManipulationUtilities
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Description
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Utility to create patches out of selected boundary faces. Faces come either
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from existing patches or from a faceSet.
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More specifically it:
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- creates new patches (from selected boundary faces). Synchronise faces
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on coupled patches.
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- synchronises points on coupled boundaries
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- remove patches with 0 faces in them
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\*---------------------------------------------------------------------------*/
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#include "cyclicPolyPatch.H"
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#include "syncTools.H"
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#include "argList.H"
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#include "polyMesh.H"
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#include "Time.H"
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#include "SortableList.H"
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#include "OFstream.H"
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#include "meshTools.H"
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#include "faceSet.H"
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#include "IOPtrList.H"
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#include "polyTopoChange.H"
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#include "polyModifyFace.H"
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#include "wordReList.H"
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#include "processorMeshes.H"
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#include "IOdictionary.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTemplateTypeNameAndDebug(IOPtrList<dictionary>, 0);
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}
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void changePatchID
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(
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const polyMesh& mesh,
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const label faceID,
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const label patchID,
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polyTopoChange& meshMod
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)
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{
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const label zoneID = mesh.faceZones().whichZone(faceID);
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bool zoneFlip = false;
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if (zoneID >= 0)
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{
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const faceZone& fZone = mesh.faceZones()[zoneID];
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zoneFlip = fZone.flipMap()[fZone.whichFace(faceID)];
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}
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meshMod.setAction
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(
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polyModifyFace
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(
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mesh.faces()[faceID], // face
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faceID, // face ID
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mesh.faceOwner()[faceID], // owner
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-1, // neighbour
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false, // flip flux
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patchID, // patch ID
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false, // remove from zone
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zoneID, // zone ID
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zoneFlip // zone flip
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)
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);
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}
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// Filter out the empty patches.
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void filterPatches(polyMesh& mesh, const wordHashSet& addedPatchNames)
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{
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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// Patches to keep
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DynamicList<polyPatch*> allPatches(patches.size());
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label nOldPatches = returnReduce(patches.size(), sumOp<label>());
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// Copy old patches.
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forAll(patches, patchi)
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{
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const polyPatch& pp = patches[patchi];
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// Note: reduce possible since non-proc patches guaranteed in same order
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if (!isA<processorPolyPatch>(pp))
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{
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// Add if
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// - non zero size
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// - or added from the createPatchDict
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// - or cyclic (since referred to by other cyclic half or
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// proccyclic)
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if
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(
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addedPatchNames.found(pp.name())
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|| returnReduce(pp.size(), sumOp<label>()) > 0
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|| isA<coupledPolyPatch>(pp)
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)
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{
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allPatches.append
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(
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pp.clone
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(
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patches,
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allPatches.size(),
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pp.size(),
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pp.start()
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).ptr()
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);
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}
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else
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{
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Info<< "Removing zero-sized patch " << pp.name()
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<< " type " << pp.type()
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<< " at position " << patchi << endl;
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}
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}
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}
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// Copy non-empty processor patches
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forAll(patches, patchi)
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{
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const polyPatch& pp = patches[patchi];
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if (isA<processorPolyPatch>(pp))
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{
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if (pp.size())
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{
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allPatches.append
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(
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pp.clone
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(
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patches,
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allPatches.size(),
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pp.size(),
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pp.start()
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).ptr()
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);
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}
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else
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{
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Info<< "Removing empty processor patch " << pp.name()
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<< " at position " << patchi << endl;
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}
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}
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}
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label nAllPatches = returnReduce(allPatches.size(), sumOp<label>());
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if (nAllPatches != nOldPatches)
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{
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Info<< "Removing patches." << endl;
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allPatches.shrink();
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mesh.removeBoundary();
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mesh.addPatches(allPatches);
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}
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else
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{
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Info<< "No patches removed." << endl;
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forAll(allPatches, i)
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{
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delete allPatches[i];
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}
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}
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}
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// Dump for all patches the current match
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void dumpCyclicMatch(const fileName& prefix, const polyMesh& mesh)
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{
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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forAll(patches, patchi)
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{
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if
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(
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isA<cyclicPolyPatch>(patches[patchi])
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&& refCast<const cyclicPolyPatch>(patches[patchi]).owner()
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)
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{
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const cyclicPolyPatch& cycPatch =
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refCast<const cyclicPolyPatch>(patches[patchi]);
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// Dump patches
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{
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OFstream str(prefix+cycPatch.name()+".obj");
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Pout<< "Dumping " << cycPatch.name()
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<< " faces to " << str.name() << endl;
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meshTools::writeOBJ
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(
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str,
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cycPatch,
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cycPatch.points()
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);
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}
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const cyclicPolyPatch& nbrPatch = cycPatch.neighbPatch();
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{
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OFstream str(prefix+nbrPatch.name()+".obj");
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Pout<< "Dumping " << nbrPatch.name()
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<< " faces to " << str.name() << endl;
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meshTools::writeOBJ
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(
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str,
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nbrPatch,
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nbrPatch.points()
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);
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}
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// Lines between corresponding face centres
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OFstream str(prefix+cycPatch.name()+nbrPatch.name()+"_match.obj");
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label vertI = 0;
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Pout<< "Dumping cyclic match as lines between face centres to "
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<< str.name() << endl;
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forAll(cycPatch, facei)
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{
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const point& fc0 = mesh.faceCentres()[cycPatch.start()+facei];
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meshTools::writeOBJ(str, fc0);
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vertI++;
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const point& fc1 = mesh.faceCentres()[nbrPatch.start()+facei];
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meshTools::writeOBJ(str, fc1);
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vertI++;
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str<< "l " << vertI-1 << ' ' << vertI << nl;
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}
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}
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}
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}
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void separateList
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(
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const vectorField& separation,
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UList<vector>& field
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)
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{
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if (separation.size() == 1)
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{
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// Single value for all.
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forAll(field, i)
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{
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field[i] += separation[0];
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}
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}
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else if (separation.size() == field.size())
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{
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forAll(field, i)
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{
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field[i] += separation[i];
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}
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}
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else
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{
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FatalErrorInFunction
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<< "Sizes of field and transformation not equal. field:"
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<< field.size() << " transformation:" << separation.size()
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<< abort(FatalError);
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}
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}
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// Synchronise points on both sides of coupled boundaries.
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template<class CombineOp>
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void syncPoints
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(
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const polyMesh& mesh,
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pointField& points,
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const CombineOp& cop,
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const point& nullValue
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)
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{
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if (points.size() != mesh.nPoints())
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{
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FatalErrorInFunction
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<< "Number of values " << points.size()
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<< " is not equal to the number of points in the mesh "
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<< mesh.nPoints() << abort(FatalError);
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}
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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// Is there any coupled patch with transformation?
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bool hasTransformation = false;
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if (Pstream::parRun())
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{
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// Send
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forAll(patches, patchi)
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{
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const polyPatch& pp = patches[patchi];
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if
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(
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isA<processorPolyPatch>(pp)
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&& pp.nPoints() > 0
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&& refCast<const processorPolyPatch>(pp).owner()
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)
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{
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const processorPolyPatch& procPatch =
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refCast<const processorPolyPatch>(pp);
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// Get data per patchPoint in neighbouring point numbers.
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pointField patchInfo(procPatch.nPoints(), nullValue);
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const labelList& meshPts = procPatch.meshPoints();
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const labelList& nbrPts = procPatch.neighbPoints();
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forAll(nbrPts, pointi)
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{
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label nbrPointi = nbrPts[pointi];
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if (nbrPointi >= 0 && nbrPointi < patchInfo.size())
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{
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patchInfo[nbrPointi] = points[meshPts[pointi]];
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}
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}
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OPstream toNbr
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(
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Pstream::commsTypes::blocking,
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procPatch.neighbProcNo()
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);
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toNbr << patchInfo;
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}
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}
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// Receive and set.
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forAll(patches, patchi)
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{
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const polyPatch& pp = patches[patchi];
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if
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(
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isA<processorPolyPatch>(pp)
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&& pp.nPoints() > 0
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&& !refCast<const processorPolyPatch>(pp).owner()
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)
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{
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const processorPolyPatch& procPatch =
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refCast<const processorPolyPatch>(pp);
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pointField nbrPatchInfo(procPatch.nPoints());
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{
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// We do not know the number of points on the other side
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// so cannot use Pstream::read.
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IPstream fromNbr
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(
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Pstream::commsTypes::blocking,
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procPatch.neighbProcNo()
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);
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fromNbr >> nbrPatchInfo;
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}
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// Null any value which is not on neighbouring processor
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nbrPatchInfo.setSize(procPatch.nPoints(), nullValue);
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if (!procPatch.parallel())
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{
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hasTransformation = true;
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transformList(procPatch.forwardT(), nbrPatchInfo);
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}
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else if (procPatch.separated())
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{
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hasTransformation = true;
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separateList(-procPatch.separation(), nbrPatchInfo);
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}
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const labelList& meshPts = procPatch.meshPoints();
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forAll(meshPts, pointi)
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{
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label meshPointi = meshPts[pointi];
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points[meshPointi] = nbrPatchInfo[pointi];
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}
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}
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}
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}
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// Do the cyclics.
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forAll(patches, patchi)
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{
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const polyPatch& pp = patches[patchi];
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if
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(
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isA<cyclicPolyPatch>(pp)
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&& refCast<const cyclicPolyPatch>(pp).owner()
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)
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{
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const cyclicPolyPatch& cycPatch =
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refCast<const cyclicPolyPatch>(pp);
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const edgeList& coupledPoints = cycPatch.coupledPoints();
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const labelList& meshPts = cycPatch.meshPoints();
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const cyclicPolyPatch& nbrPatch = cycPatch.neighbPatch();
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const labelList& nbrMeshPts = nbrPatch.meshPoints();
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pointField half0Values(coupledPoints.size());
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forAll(coupledPoints, i)
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{
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const edge& e = coupledPoints[i];
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label point0 = meshPts[e[0]];
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half0Values[i] = points[point0];
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}
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if (!cycPatch.parallel())
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{
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hasTransformation = true;
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transformList(cycPatch.reverseT(), half0Values);
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}
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else if (cycPatch.separated())
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{
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hasTransformation = true;
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separateList(cycPatch.separation(), half0Values);
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}
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forAll(coupledPoints, i)
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{
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const edge& e = coupledPoints[i];
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label point1 = nbrMeshPts[e[1]];
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points[point1] = half0Values[i];
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}
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}
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}
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//- Note: hasTransformation is only used for warning messages so
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// reduction not strictly necessary.
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//reduce(hasTransformation, orOp<bool>());
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// Synchronize multiple shared points.
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const globalMeshData& pd = mesh.globalData();
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if (pd.nGlobalPoints() > 0)
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{
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if (hasTransformation)
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{
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WarningInFunction
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<< "There are decomposed cyclics in this mesh with"
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<< " transformations." << endl
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<< "This is not supported. The result will be incorrect"
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<< endl;
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}
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// Values on shared points.
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pointField sharedPts(pd.nGlobalPoints(), nullValue);
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forAll(pd.sharedPointLabels(), i)
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{
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label meshPointi = pd.sharedPointLabels()[i];
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// Fill my entries in the shared points
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sharedPts[pd.sharedPointAddr()[i]] = points[meshPointi];
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}
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// Combine on master.
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Pstream::listCombineGather(sharedPts, cop);
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Pstream::listCombineScatter(sharedPts);
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|
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// Now we will all have the same information. Merge it back with
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// my local information.
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forAll(pd.sharedPointLabels(), i)
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{
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label meshPointi = pd.sharedPointLabels()[i];
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points[meshPointi] = sharedPts[pd.sharedPointAddr()[i]];
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}
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}
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}
|
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|
|
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int main(int argc, char *argv[])
|
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{
|
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#include "addOverwriteOption.H"
|
|
#include "addRegionOption.H"
|
|
#include "addDictOption.H"
|
|
Foam::argList::addBoolOption
|
|
(
|
|
"writeObj",
|
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"write obj files showing the cyclic matching process"
|
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);
|
|
#include "setRootCase.H"
|
|
#include "createTime.H"
|
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runTime.functionObjects().off();
|
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|
|
Foam::word meshRegionName = polyMesh::defaultRegion;
|
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args.readIfPresent("region", meshRegionName);
|
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|
|
const bool overwrite = args.found("overwrite");
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|
|
#include "createNamedPolyMesh.H"
|
|
|
|
const bool writeObj = args.found("writeObj");
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|
|
|
const word oldInstance = mesh.pointsInstance();
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|
|
const word dictName("createPatchDict");
|
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#include "setSystemMeshDictionaryIO.H"
|
|
Info<< "Reading " << dictIO.instance()/dictIO.name() << nl << endl;
|
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|
|
IOdictionary dict(dictIO);
|
|
|
|
// Whether to synchronise points
|
|
const bool pointSync(dict.get<bool>("pointSync"));
|
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|
|
const polyBoundaryMesh& patches = mesh.boundaryMesh();
|
|
|
|
// If running parallel check same patches everywhere
|
|
patches.checkParallelSync(true);
|
|
|
|
|
|
if (writeObj)
|
|
{
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dumpCyclicMatch("initial_", mesh);
|
|
}
|
|
|
|
// Read patch construct info from dictionary
|
|
PtrList<dictionary> patchSources(dict.lookup("patches"));
|
|
|
|
wordHashSet addedPatchNames;
|
|
forAll(patchSources, addedI)
|
|
{
|
|
const dictionary& dict = patchSources[addedI];
|
|
addedPatchNames.insert(dict.lookup("name"));
|
|
}
|
|
|
|
|
|
// 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()
|
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);
|
|
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("patchInfo"));
|
|
|
|
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()
|
|
);
|
|
}
|
|
else
|
|
{
|
|
Info<< "Patch '" << patchName << "' already exists. Only "
|
|
<< "moving patch faces - type will remain the same" << endl;
|
|
}
|
|
}
|
|
|
|
// 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
|
|
// ~~~~~~~~~~~~~~~~
|
|
|
|
polyTopoChange meshMod(mesh);
|
|
|
|
|
|
forAll(patchSources, addedI)
|
|
{
|
|
const dictionary& dict = patchSources[addedI];
|
|
|
|
const word patchName(dict.lookup("name"));
|
|
label destPatchi = patches.findPatchID(patchName);
|
|
|
|
if (destPatchi == -1)
|
|
{
|
|
FatalErrorInFunction
|
|
<< "patch " << patchName << " not added. Problem."
|
|
<< abort(FatalError);
|
|
}
|
|
|
|
const word sourceType(dict.lookup("constructFrom"));
|
|
|
|
if (sourceType == "patches")
|
|
{
|
|
labelHashSet patchSources
|
|
(
|
|
patches.patchSet
|
|
(
|
|
wordReList(dict.lookup("patches"))
|
|
)
|
|
);
|
|
|
|
// Repatch faces of the patches.
|
|
for (const label patchi : patchSources)
|
|
{
|
|
const polyPatch& pp = patches[patchi];
|
|
|
|
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")
|
|
{
|
|
const 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))
|
|
{
|
|
FatalErrorInFunction
|
|
<< "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
|
|
{
|
|
FatalErrorInFunction
|
|
<< "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());
|
|
|
|
if (writeObj)
|
|
{
|
|
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 cyclic patches:
|
|
// - for separated ones use user specified offset vector
|
|
|
|
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) && pp.size())
|
|
{
|
|
const cyclicPolyPatch& cycpp =
|
|
refCast<const cyclicPolyPatch>(pp);
|
|
|
|
if (cycpp.transform() == cyclicPolyPatch::TRANSLATIONAL)
|
|
{
|
|
// Force to wanted separation
|
|
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 cyclicPolyPatch& nbr = cycpp.neighbPatch();
|
|
const_cast<vectorField&>(cpp.separation()) =
|
|
pointField
|
|
(
|
|
1,
|
|
nbr[0].centre(mesh.points())
|
|
- cycpp[0].centre(mesh.points())
|
|
);
|
|
}
|
|
}
|
|
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,
|
|
minMagSqrEqOp<vector>(),
|
|
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, addedPatchNames);
|
|
|
|
|
|
if (writeObj)
|
|
{
|
|
dumpCyclicMatch("final_", mesh);
|
|
}
|
|
|
|
|
|
// Set the precision of the points data to 10
|
|
IOstream::defaultPrecision(max(10u, IOstream::defaultPrecision()));
|
|
|
|
if (!overwrite)
|
|
{
|
|
runTime++;
|
|
}
|
|
else
|
|
{
|
|
mesh.setInstance(oldInstance);
|
|
}
|
|
|
|
// Write resulting mesh
|
|
Info<< "Writing repatched mesh to " << runTime.timeName() << nl << endl;
|
|
mesh.write();
|
|
topoSet::removeFiles(mesh);
|
|
processorMeshes::removeFiles(mesh);
|
|
|
|
Info<< "End\n" << endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|