570 lines
18 KiB
C
570 lines
18 KiB
C
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/*---------------------------------------------------------------------------*\
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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 held by original author
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\\/ M anipulation |
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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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, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "blockMesh.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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labelList blockMesh::createMergeList()
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{
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Info<< nl << "Creating merge list " << flush;
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labelList MergeList(nPoints_, -1);
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blockMesh& blocks = *this;
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const pointField& blockPoints = topology().points();
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const cellList& blockCells = topology().cells();
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const faceList& blockFaces = topology().faces();
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const labelList& faceOwnerBlocks = topology().faceOwner();
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// For efficiency, create merge pairs in the first pass
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labelListListList glueMergePairs(blockFaces.size());
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const labelList& faceNeighbourBlocks = topology().faceNeighbour();
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forAll(blockFaces, blockFaceLabel)
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{
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label blockPlabel = faceOwnerBlocks[blockFaceLabel];
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const pointField& blockPpoints = blocks[blockPlabel].points();
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const labelList& blockPfaces = blockCells[blockPlabel];
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bool foundFace = false;
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label blockPfaceLabel;
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for
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(
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blockPfaceLabel = 0;
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blockPfaceLabel < blockPfaces.size();
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blockPfaceLabel++
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)
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{
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if
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(
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blockFaces[blockPfaces[blockPfaceLabel]]
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== blockFaces[blockFaceLabel]
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)
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{
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foundFace = true;
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break;
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}
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}
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if (!foundFace)
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{
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FatalErrorIn("blockMesh::createMergeList()")
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<< "Cannot find merge face for block " << blockPlabel
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<< exit(FatalError);
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};
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const labelListList& blockPfaceFaces =
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blocks[blockPlabel].boundaryPatches()[blockPfaceLabel];
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labelListList& curPairs = glueMergePairs[blockFaceLabel];
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curPairs.setSize(blockPfaceFaces.size());
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// Calculate sqr of the merge tolerance as 1/10th of the min sqr
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// point to point distance on the block face.
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// At the same time merge collated points on the block's faces
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// (removes boundary poles etc.)
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// Collated points detected by initally taking a constant factor of
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// the size of the block.
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boundBox bb(blockCells[blockPlabel].points(blockFaces, blockPoints));
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const scalar mergeSqrDist = SMALL*magSqr(bb.max() - bb.min());
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// This is an N^2 algorithm
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scalar sqrMergeTol = GREAT;
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forAll(blockPfaceFaces, blockPfaceFaceLabel)
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{
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const labelList& blockPfaceFacePoints
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= blockPfaceFaces[blockPfaceFaceLabel];
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forAll(blockPfaceFacePoints, blockPfaceFacePointLabel)
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{
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forAll(blockPfaceFacePoints, blockPfaceFacePointLabel2)
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{
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if (blockPfaceFacePointLabel != blockPfaceFacePointLabel2)
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{
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scalar magSqrDist = magSqr
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(
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blockPpoints[blockPfaceFacePoints
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[blockPfaceFacePointLabel]]
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- blockPpoints[blockPfaceFacePoints
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[blockPfaceFacePointLabel2]]
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);
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if (magSqrDist < mergeSqrDist)
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{
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label PpointLabel =
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blockPfaceFacePoints[blockPfaceFacePointLabel]
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+ blockOffsets_[blockPlabel];
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label PpointLabel2 =
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blockPfaceFacePoints[blockPfaceFacePointLabel2]
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+ blockOffsets_[blockPlabel];
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label minPP2 = min(PpointLabel, PpointLabel2);
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if (MergeList[PpointLabel] != -1)
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{
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minPP2 = min(minPP2, MergeList[PpointLabel]);
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}
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if (MergeList[PpointLabel2] != -1)
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{
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minPP2 = min(minPP2, MergeList[PpointLabel2]);
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}
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MergeList[PpointLabel] = MergeList[PpointLabel2]
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= minPP2;
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}
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else
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{
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sqrMergeTol = min(sqrMergeTol, magSqrDist);
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}
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}
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}
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}
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}
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sqrMergeTol /= 10.0;
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if (topology().isInternalFace(blockFaceLabel))
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{
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label blockNlabel = faceNeighbourBlocks[blockFaceLabel];
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const pointField& blockNpoints = blocks[blockNlabel].points();
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const labelList& blockNfaces = blockCells[blockNlabel];
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foundFace = false;
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label blockNfaceLabel;
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for
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(
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blockNfaceLabel = 0;
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blockNfaceLabel < blockNfaces.size();
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blockNfaceLabel++
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)
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{
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if
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(
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blockFaces[blockNfaces[blockNfaceLabel]]
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== blockFaces[blockFaceLabel]
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)
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{
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foundFace = true;
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break;
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}
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}
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if (!foundFace)
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{
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FatalErrorIn("blockMesh::createMergeList()")
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<< "Cannot find merge face for block " << blockNlabel
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<< exit(FatalError);
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};
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const labelListList& blockNfaceFaces =
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blocks[blockNlabel].boundaryPatches()[blockNfaceLabel];
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if (blockPfaceFaces.size() != blockNfaceFaces.size())
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{
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FatalErrorIn("blockMesh::createMergeList()")
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<< "Inconsistent number of faces between block pair "
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<< blockPlabel << " and " << blockNlabel
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<< exit(FatalError);
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}
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bool found = false;
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// N-squared point search over all points of all faces of
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// master block over all point of all faces of slave block
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forAll(blockPfaceFaces, blockPfaceFaceLabel)
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{
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const labelList& blockPfaceFacePoints
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= blockPfaceFaces[blockPfaceFaceLabel];
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labelList& cp = curPairs[blockPfaceFaceLabel];
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cp.setSize(blockPfaceFacePoints.size());
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cp = -1;
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forAll(blockPfaceFacePoints, blockPfaceFacePointLabel)
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{
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found = false;
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forAll(blockNfaceFaces, blockNfaceFaceLabel)
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{
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const labelList& blockNfaceFacePoints
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= blockNfaceFaces[blockNfaceFaceLabel];
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forAll(blockNfaceFacePoints, blockNfaceFacePointLabel)
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{
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if
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(
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magSqr
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(
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blockPpoints
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[blockPfaceFacePoints[blockPfaceFacePointLabel]]
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- blockNpoints
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[blockNfaceFacePoints[blockNfaceFacePointLabel]]
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) < sqrMergeTol
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)
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{
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// Found a new pair
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found = true;
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cp[blockPfaceFacePointLabel] =
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blockNfaceFacePoints[blockNfaceFacePointLabel];
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label PpointLabel =
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blockPfaceFacePoints[blockPfaceFacePointLabel]
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+ blockOffsets_[blockPlabel];
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label NpointLabel =
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blockNfaceFacePoints[blockNfaceFacePointLabel]
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+ blockOffsets_[blockNlabel];
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label minPN = min(PpointLabel, NpointLabel);
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if (MergeList[PpointLabel] != -1)
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{
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minPN = min(minPN, MergeList[PpointLabel]);
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}
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if (MergeList[NpointLabel] != -1)
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{
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minPN = min(minPN, MergeList[NpointLabel]);
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}
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MergeList[PpointLabel] = MergeList[NpointLabel]
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= minPN;
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}
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}
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}
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}
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forAll(blockPfaceFacePoints, blockPfaceFacePointLabel)
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{
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if (cp[blockPfaceFacePointLabel] == -1)
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{
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FatalErrorIn("blockMesh::createMergeList()")
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<< "Inconsistent point locations between block pair "
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<< blockPlabel << " and " << blockNlabel << nl
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<< " probably due to inconsistent grading."
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<< exit(FatalError);
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}
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}
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}
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}
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}
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const faceList::subList blockInternalFaces
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(
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blockFaces,
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topology().nInternalFaces()
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);
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bool changedPointMerge = false;
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label nPasses = 0;
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do
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{
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changedPointMerge = false;
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nPasses++;
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forAll(blockInternalFaces, blockFaceLabel)
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{
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label blockPlabel = faceOwnerBlocks[blockFaceLabel];
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label blockNlabel = faceNeighbourBlocks[blockFaceLabel];
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const labelList& blockPfaces = blockCells[blockPlabel];
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const labelList& blockNfaces = blockCells[blockNlabel];
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const labelListList& curPairs = glueMergePairs[blockFaceLabel];
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bool foundFace = false;
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label blockPfaceLabel;
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for
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(
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blockPfaceLabel = 0;
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blockPfaceLabel < blockPfaces.size();
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blockPfaceLabel++
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)
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{
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if
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(
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blockFaces[blockPfaces[blockPfaceLabel]]
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== blockInternalFaces[blockFaceLabel]
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)
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{
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foundFace = true;
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break;
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}
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}
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foundFace = false;
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label blockNfaceLabel;
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for
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(
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blockNfaceLabel = 0;
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blockNfaceLabel < blockNfaces.size();
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blockNfaceLabel++
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)
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{
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if
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(
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blockFaces[blockNfaces[blockNfaceLabel]]
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== blockInternalFaces[blockFaceLabel]
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)
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{
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foundFace = true;
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break;
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}
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}
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const labelListList& blockPfaceFaces =
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blocks[blockPlabel].boundaryPatches()[blockPfaceLabel];
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forAll(blockPfaceFaces, blockPfaceFaceLabel)
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{
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const labelList& blockPfaceFacePoints
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= blockPfaceFaces[blockPfaceFaceLabel];
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const labelList& cp = curPairs[blockPfaceFaceLabel];
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forAll(blockPfaceFacePoints, blockPfaceFacePointLabel)
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{
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label PpointLabel =
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blockPfaceFacePoints[blockPfaceFacePointLabel]
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+ blockOffsets_[blockPlabel];
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label NpointLabel =
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cp[blockPfaceFacePointLabel]
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+ blockOffsets_[blockNlabel];
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if
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(
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MergeList[PpointLabel]
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!= MergeList[NpointLabel]
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)
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{
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changedPointMerge = true;
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MergeList[PpointLabel]
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= MergeList[NpointLabel]
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= min
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(
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MergeList[PpointLabel],
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MergeList[NpointLabel]
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);
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}
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}
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}
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}
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Info << "." << flush;
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if (nPasses > 100)
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{
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FatalErrorIn("blockMesh::createMergeList()")
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<< "Point merging failed after max number of passes."
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<< abort(FatalError);
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}
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}
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while (changedPointMerge);
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Info << endl;
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forAll(blockInternalFaces, blockFaceLabel)
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{
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label blockPlabel = faceOwnerBlocks[blockFaceLabel];
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label blockNlabel = faceNeighbourBlocks[blockFaceLabel];
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const labelList& blockPfaces = blockCells[blockPlabel];
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const labelList& blockNfaces = blockCells[blockNlabel];
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const pointField& blockPpoints = blocks[blockPlabel].points();
|
||
|
|
const pointField& blockNpoints = blocks[blockNlabel].points();
|
||
|
|
|
||
|
|
bool foundFace = false;
|
||
|
|
label blockPfaceLabel;
|
||
|
|
for
|
||
|
|
(
|
||
|
|
blockPfaceLabel = 0;
|
||
|
|
blockPfaceLabel < blockPfaces.size();
|
||
|
|
blockPfaceLabel++
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if
|
||
|
|
(
|
||
|
|
blockFaces[blockPfaces[blockPfaceLabel]]
|
||
|
|
== blockInternalFaces[blockFaceLabel]
|
||
|
|
)
|
||
|
|
{
|
||
|
|
foundFace = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!foundFace)
|
||
|
|
{
|
||
|
|
FatalErrorIn("blockMesh::createMergeList()")
|
||
|
|
<< "Cannot find merge face for block " << blockPlabel
|
||
|
|
<< exit(FatalError);
|
||
|
|
};
|
||
|
|
|
||
|
|
foundFace = false;
|
||
|
|
label blockNfaceLabel;
|
||
|
|
for
|
||
|
|
(
|
||
|
|
blockNfaceLabel = 0;
|
||
|
|
blockNfaceLabel < blockNfaces.size();
|
||
|
|
blockNfaceLabel++
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if
|
||
|
|
(
|
||
|
|
blockFaces[blockNfaces[blockNfaceLabel]]
|
||
|
|
== blockInternalFaces[blockFaceLabel]
|
||
|
|
)
|
||
|
|
{
|
||
|
|
foundFace = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!foundFace)
|
||
|
|
{
|
||
|
|
FatalErrorIn("blockMesh::createMergeList()")
|
||
|
|
<< "Cannot find merge face for block " << blockNlabel
|
||
|
|
<< exit(FatalError);
|
||
|
|
};
|
||
|
|
|
||
|
|
const labelListList& blockPfaceFaces =
|
||
|
|
blocks[blockPlabel].boundaryPatches()[blockPfaceLabel];
|
||
|
|
|
||
|
|
const labelListList& blockNfaceFaces =
|
||
|
|
blocks[blockNlabel].boundaryPatches()[blockNfaceLabel];
|
||
|
|
|
||
|
|
forAll(blockPfaceFaces, blockPfaceFaceLabel)
|
||
|
|
{
|
||
|
|
const labelList& blockPfaceFacePoints
|
||
|
|
= blockPfaceFaces[blockPfaceFaceLabel];
|
||
|
|
|
||
|
|
forAll(blockPfaceFacePoints, blockPfaceFacePointLabel)
|
||
|
|
{
|
||
|
|
label PpointLabel =
|
||
|
|
blockPfaceFacePoints[blockPfaceFacePointLabel]
|
||
|
|
+ blockOffsets_[blockPlabel];
|
||
|
|
|
||
|
|
if (MergeList[PpointLabel] == -1)
|
||
|
|
{
|
||
|
|
FatalErrorIn("blockMesh::createMergeList()")
|
||
|
|
<< "Unable to merge point "
|
||
|
|
<< blockPfaceFacePointLabel
|
||
|
|
<< ' ' << blockPpoints[blockPfaceFacePointLabel]
|
||
|
|
<< " of face "
|
||
|
|
<< blockPfaceLabel
|
||
|
|
<< " of block "
|
||
|
|
<< blockPlabel
|
||
|
|
<< exit(FatalError);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
forAll(blockNfaceFaces, blockNfaceFaceLabel)
|
||
|
|
{
|
||
|
|
const labelList& blockNfaceFacePoints
|
||
|
|
= blockNfaceFaces[blockNfaceFaceLabel];
|
||
|
|
|
||
|
|
forAll(blockNfaceFacePoints, blockNfaceFacePointLabel)
|
||
|
|
{
|
||
|
|
label NpointLabel =
|
||
|
|
blockNfaceFacePoints[blockNfaceFacePointLabel]
|
||
|
|
+ blockOffsets_[blockNlabel];
|
||
|
|
|
||
|
|
if (MergeList[NpointLabel] == -1)
|
||
|
|
{
|
||
|
|
FatalErrorIn("blockMesh::createMergeList()")
|
||
|
|
<< "unable to merge point "
|
||
|
|
<< blockNfaceFacePointLabel
|
||
|
|
<< ' ' << blockNpoints[blockNfaceFacePointLabel]
|
||
|
|
<< " of face "
|
||
|
|
<< blockNfaceLabel
|
||
|
|
<< " of block "
|
||
|
|
<< blockNlabel
|
||
|
|
<< exit(FatalError);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// sort merge list to return new point label (in new shorter list)
|
||
|
|
// given old point label
|
||
|
|
label newPointLabel = 0;
|
||
|
|
|
||
|
|
forAll(MergeList, pointLabel)
|
||
|
|
{
|
||
|
|
if (MergeList[pointLabel] > pointLabel)
|
||
|
|
{
|
||
|
|
FatalErrorIn("blockMesh::createMergeList()")
|
||
|
|
<< "ouch" << exit(FatalError);
|
||
|
|
}
|
||
|
|
|
||
|
|
if
|
||
|
|
(
|
||
|
|
(MergeList[pointLabel] == -1)
|
||
|
|
|| MergeList[pointLabel] == pointLabel
|
||
|
|
)
|
||
|
|
{
|
||
|
|
MergeList[pointLabel] = newPointLabel;
|
||
|
|
newPointLabel++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
MergeList[pointLabel] = MergeList[MergeList[pointLabel]];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
nPoints_ = newPointLabel;
|
||
|
|
|
||
|
|
|
||
|
|
return MergeList;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||
|
|
|
||
|
|
} // End namespace Foam
|
||
|
|
|
||
|
|
// ************************************************************************* //
|