FreeFOAM The Cross-Platform CFD Toolkit
primitiveMeshPointCells.C
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6  \\/ M anipulation |
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18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21  You should have received a copy of the GNU General Public License
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24 \*---------------------------------------------------------------------------*/
25 
26 #include "primitiveMesh.H"
27 #include <OpenFOAM/cell.H>
28 
29 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
30 
31 void Foam::primitiveMesh::calcPointCells() const
32 {
33  // Loop through cells and mark up points
34 
35  if (debug)
36  {
37  Pout<< "primitiveMesh::calcPointCells() : "
38  << "calculating pointCells"
39  << endl;
40 
41  if (debug == -1)
42  {
43  // For checking calls:abort so we can quickly hunt down
44  // origin of call
45  FatalErrorIn("primitiveMesh::calcPointCells()")
46  << abort(FatalError);
47  }
48  }
49 
50  // It is an error to attempt to recalculate pointCells
51  // if the pointer is already set
52  if (pcPtr_)
53  {
54  FatalErrorIn("primitiveMesh::calcPointCells() const")
55  << "pointCells already calculated"
56  << abort(FatalError);
57  }
58  else
59  {
60  const cellList& cf = cells();
61 
62  // Count number of cells per point
63 
64  labelList npc(nPoints(), 0);
65 
66  forAll (cf, cellI)
67  {
68  const labelList curPoints = cf[cellI].labels(faces());
69 
70  forAll (curPoints, pointI)
71  {
72  label ptI = curPoints[pointI];
73 
74  npc[ptI]++;
75  }
76  }
77 
78 
79  // Size and fill cells per point
80 
81  pcPtr_ = new labelListList(npc.size());
82  labelListList& pointCellAddr = *pcPtr_;
83 
84  forAll (pointCellAddr, pointI)
85  {
86  pointCellAddr[pointI].setSize(npc[pointI]);
87  }
88  npc = 0;
89 
90 
91  forAll (cf, cellI)
92  {
93  const labelList curPoints = cf[cellI].labels(faces());
94 
95  forAll (curPoints, pointI)
96  {
97  label ptI = curPoints[pointI];
98 
99  pointCellAddr[ptI][npc[ptI]++] = cellI;
100  }
101  }
102  }
103 }
104 
105 
106 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
107 
109 {
110  if (!pcPtr_)
111  {
112  calcPointCells();
113  }
114 
115  return *pcPtr_;
116 }
117 
118 
120 (
121  const label pointI,
122  DynamicList<label>& storage
123 ) const
124 {
125  if (hasPointCells())
126  {
127  return pointCells()[pointI];
128  }
129  else
130  {
131  const labelList& own = faceOwner();
132  const labelList& nei = faceNeighbour();
133  const labelList& pFaces = pointFaces()[pointI];
134 
135  storage.clear();
136 
137  forAll(pFaces, i)
138  {
139  const label faceI = pFaces[i];
140 
141  // Append owner
142  storage.append(own[faceI]);
143 
144  // Append neighbour
145  if (faceI < nInternalFaces())
146  {
147  storage.append(nei[faceI]);
148  }
149  }
150 
151  // Filter duplicates
152  if (storage.size() > 1)
153  {
154  sort(storage);
155 
156  label n = 1;
157  for (label i = 1; i < storage.size(); i++)
158  {
159  if (storage[i-1] != storage[i])
160  {
161  storage[n++] = storage[i];
162  }
163  }
164 
165  // truncate addressed list
166  storage.setSize(n);
167  }
168 
169  return storage;
170  }
171 }
172 
173 
174 const Foam::labelList& Foam::primitiveMesh::pointCells(const label pointI) const
175 {
176  return pointCells(pointI, labels_);
177 }
178 
179 
180 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
181 
182 // ************************ vim: set sw=4 sts=4 et: ************************ //