325 lines
8.6 KiB
C
325 lines
8.6 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Description
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Reads surface and applies surface regioning to a mesh. Uses boundaryMesh
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to do the hard work.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "objectRegistry.H"
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#include "foamTime.H"
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#include "boundaryMesh.H"
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#include "polyMesh.H"
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#include "faceSet.H"
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#include "directTopoChange.H"
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#include "polyModifyFace.H"
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#include "globalMeshData.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Adds empty patch if not yet there. Returns patchID.
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label addPatch(polyMesh& mesh, const word& patchName)
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{
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label patchI = mesh.boundaryMesh().findPatchID(patchName);
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if (patchI == -1)
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{
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const polyBoundaryMesh& patches = mesh.boundaryMesh();
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List<polyPatch*> newPatches(patches.size() + 1);
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patchI = 0;
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// Copy all old patches
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forAll(patches, i)
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{
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const polyPatch& pp = patches[i];
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newPatches[patchI] =
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pp.clone
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(
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patches,
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patchI,
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pp.size(),
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pp.start()
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).ptr();
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patchI++;
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}
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// Add zero-sized patch
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newPatches[patchI] =
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new polyPatch
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(
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patchName,
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0,
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mesh.nFaces(),
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patchI,
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patches
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);
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mesh.removeBoundary();
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mesh.addPatches(newPatches);
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Pout<< "Created patch " << patchName << " at " << patchI << endl;
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}
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else
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{
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Pout<< "Reusing patch " << patchName << " at " << patchI << endl;
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}
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return patchI;
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}
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// Repatch single face. Return true if patch changed.
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bool repatchFace
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(
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const polyMesh& mesh,
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const boundaryMesh& bMesh,
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const labelList& nearest,
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const labelList& surfToMeshPatch,
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const label faceI,
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directTopoChange& meshMod
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)
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{
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bool changed = false;
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label bFaceI = faceI - mesh.nInternalFaces();
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if (nearest[bFaceI] != -1)
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{
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// Use boundary mesh one.
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label bMeshPatchID = bMesh.whichPatch(nearest[bFaceI]);
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label patchID = surfToMeshPatch[bMeshPatchID];
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if (patchID != mesh.boundaryMesh().whichPatch(faceI))
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{
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label own = mesh.faceOwner()[faceI];
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label zoneID = mesh.faceZones().whichZone(faceI);
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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(faceI)];
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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()[faceI],// modified face
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faceI, // label of face being modified
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own, // owner
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-1, // neighbour
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false, // face flip
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patchID, // patch for face
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false, // remove from zone
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zoneID, // zone for face
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zoneFlip // face flip in zone
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)
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);
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changed = true;
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}
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}
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else
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{
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changed = false;
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}
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return changed;
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}
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// Main program:
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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argList::validArgs.append("surface file");
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argList::validOptions.insert("faceSet", "faceSet name");
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argList::validOptions.insert("tol", "fraction of mesh size");
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# include "setRootCase.H"
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# include "createTime.H"
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# include "createPolyMesh.H"
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fileName surfName(args.additionalArgs()[0]);
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Info<< "Reading surface from " << surfName << " ..." << endl;
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bool readSet = args.optionFound("faceSet");
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word setName;
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if (readSet)
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{
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setName = args.option("faceSet");
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Info<< "Repatching only the faces in faceSet " << setName
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<< " according to nearest surface triangle ..." << endl;
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}
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else
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{
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Info<< "Patching all boundary faces according to nearest surface"
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<< " triangle ..." << endl;
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}
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scalar searchTol = 1e-3;
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args.optionReadIfPresent("tol", searchTol);
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// Get search box. Anything not within this box will not be considered.
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const boundBox& meshBb = mesh.globalData().bb();
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const vector searchSpan = searchTol*meshBb.span();
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Info<< "All boundary faces further away than " << searchTol
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<< " of mesh bounding box " << meshBb
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<< " will keep their patch label ..." << endl;
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Info<< "Before patching:" << nl
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<< " patch\tsize" << endl;
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forAll(mesh.boundaryMesh(), patchI)
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{
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Info<< " " << mesh.boundaryMesh()[patchI].name() << '\t'
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<< mesh.boundaryMesh()[patchI].size() << endl;
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}
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Info<< endl;
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boundaryMesh bMesh;
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// Load in the surface.
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bMesh.readTriSurface(surfName);
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// Add all the boundaryMesh patches to the mesh.
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const PtrList<boundaryPatch>& bPatches = bMesh.patches();
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// Map from surface patch ( = boundaryMesh patch) to polyMesh patch
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labelList patchMap(bPatches.size());
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forAll(bPatches, i)
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{
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patchMap[i] = addPatch(mesh, bPatches[i].name());
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}
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// Obtain nearest face in bMesh for each boundary face in mesh that
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// is within search span.
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// Note: should only determine for faceSet if working with that.
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labelList nearest(bMesh.getNearest(mesh, searchSpan));
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{
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// Dump unmatched faces to faceSet for debugging.
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faceSet unmatchedFaces(mesh, "unmatchedFaces", nearest.size()/100);
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forAll(nearest, bFaceI)
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{
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if (nearest[bFaceI] == -1)
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{
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unmatchedFaces.insert(mesh.nInternalFaces() + bFaceI);
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}
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}
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Pout<< "Writing all " << unmatchedFaces.size()
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<< " unmatched faces to faceSet "
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<< unmatchedFaces.name()
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<< endl;
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unmatchedFaces.write();
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}
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directTopoChange meshMod(mesh);
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label nChanged = 0;
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if (readSet)
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{
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faceSet faceLabels(mesh, setName);
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Info<< "Read " << faceLabels.size() << " faces to repatch ..." << endl;
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forAllConstIter(faceSet, faceLabels, iter)
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{
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label faceI = iter.key();
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if (repatchFace(mesh, bMesh, nearest, patchMap, faceI, meshMod))
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{
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nChanged++;
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}
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}
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}
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else
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{
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forAll(nearest, bFaceI)
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{
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label faceI = mesh.nInternalFaces() + bFaceI;
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if (repatchFace(mesh, bMesh, nearest, patchMap, faceI, meshMod))
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{
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nChanged++;
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}
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}
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}
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Pout<< "Changed " << nChanged << " boundary faces." << nl << endl;
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if (nChanged > 0)
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{
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meshMod.changeMesh(mesh, false);
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Info<< "After patching:" << nl
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<< " patch\tsize" << endl;
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forAll(mesh.boundaryMesh(), patchI)
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{
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Info<< " " << mesh.boundaryMesh()[patchI].name() << '\t'
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<< mesh.boundaryMesh()[patchI].size() << endl;
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}
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Info<< endl;
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runTime++;
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// Write resulting mesh
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Info << "Writing modified mesh to time " << runTime.value() << endl;
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mesh.write();
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}
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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