FreeFOAM The Cross-Platform CFD Toolkit
nbrToCell.C
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5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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24 \*---------------------------------------------------------------------------*/
25 
26 #include "nbrToCell.H"
27 #include <OpenFOAM/polyMesh.H>
28 
30 
31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
32 
33 namespace Foam
34 {
35 
36 defineTypeNameAndDebug(nbrToCell, 0);
37 
38 addToRunTimeSelectionTable(topoSetSource, nbrToCell, word);
39 
40 addToRunTimeSelectionTable(topoSetSource, nbrToCell, istream);
41 
42 }
43 
44 
45 Foam::topoSetSource::addToUsageTable Foam::nbrToCell::usage_
46 (
47  nbrToCell::typeName,
48  "\n Usage: nbrToCell <nNeighbours>\n\n"
49  " Select all cells with <= nNeighbours neighbouring cells\n\n"
50 );
51 
52 
53 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
54 
55 void Foam::nbrToCell::combine(topoSet& set, const bool add) const
56 {
57  const cellList& cells = mesh().cells();
58  const polyBoundaryMesh& patches = mesh_.boundaryMesh();
59 
60  boolList isCoupled(mesh_.nFaces()-mesh_.nInternalFaces(), false);
61 
62  forAll(patches, patchI)
63  {
64  const polyPatch& pp = patches[patchI];
65 
66  if (pp.coupled())
67  {
68  label faceI = pp.start();
69  forAll(pp, i)
70  {
71  isCoupled[faceI-mesh_.nInternalFaces()] = true;
72  faceI++;
73  }
74  }
75  }
76 
77  forAll(cells, cellI)
78  {
79  const cell& cFaces = cells[cellI];
80 
81  label nNbrCells = 0;
82 
83  forAll(cFaces, i)
84  {
85  label faceI = cFaces[i];
86 
87  if (mesh_.isInternalFace(faceI))
88  {
89  nNbrCells++;
90  }
91  else if (isCoupled[faceI-mesh_.nInternalFaces()])
92  {
93  nNbrCells++;
94  }
95  }
96 
97  if (nNbrCells <= minNbrs_)
98  {
99  addOrDelete(set, cellI, add);
100  }
101  }
102 }
103 
104 
105 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
106 
107 // Construct from components
109 (
110  const polyMesh& mesh,
111  const label minNbrs
112 )
113 :
114  topoSetSource(mesh),
115  minNbrs_(minNbrs)
116 {}
117 
118 
119 // Construct from dictionary
121 (
122  const polyMesh& mesh,
123  const dictionary& dict
124 )
125 :
126  topoSetSource(mesh),
127  minNbrs_(readLabel(dict.lookup("neighbours")))
128 {}
129 
130 
131 // Construct from Istream
133 (
134  const polyMesh& mesh,
135  Istream& is
136 )
137 :
138  topoSetSource(mesh),
139  minNbrs_(readLabel(checkIs(is)))
140 {}
141 
142 
143 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
144 
146 {}
147 
148 
149 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
150 
152 (
153  const topoSetSource::setAction action,
154  topoSet& set
155 ) const
156 {
157  if ((action == topoSetSource::NEW) || (action == topoSetSource::ADD))
158  {
159  Info<< " Adding cells with only " << minNbrs_ << " or less"
160  " neighbouring cells" << " ..." << endl;
161 
162  combine(set, true);
163  }
164  else if (action == topoSetSource::DELETE)
165  {
166  Info<< " Removing cells with only " << minNbrs_ << " or less"
167  " neighbouring cells" << " ..." << endl;
168 
169  combine(set, false);
170  }
171 }
172 
173 
174 // ************************ vim: set sw=4 sts=4 et: ************************ //