src/OpenFOAM/meshes/primitiveMesh/primitiveMeshPointCells.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright held by original author
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software; you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation; either version 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM; if not, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 \*---------------------------------------------------------------------------*/
  26
  27 #include "primitiveMesh.H"
  28 #include "cell.H"
  29
  30 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  31
  32 void Foam::primitiveMesh::calcPointCells() const
  33 {
  34     // Loop through cells and mark up points
  35
  36     if (debug)
  37     {
  38         Pout<< "primitiveMesh::calcPointCells() : "
  39             << "calculating pointCells"
  40             << endl;
  41
  42         if (debug == -1)
  43         {
  44             // For checking calls:abort so we can quickly hunt down
  45             // origin of call
  46             FatalErrorIn("primitiveMesh::calcPointCells()")
  47                 << abort(FatalError);
  48         }
  49     }
  50
  51     // It is an error to attempt to recalculate pointCells
  52     // if the pointer is already set
  53     if (pcPtr_)
  54     {
  55         FatalErrorIn("primitiveMesh::calcPointCells() const")
  56             << "pointCells already calculated"
  57             << abort(FatalError);
  58     }
  59     else
  60     {
  61         const cellList& cf = cells();
  62
  63         // Count number of cells per point
  64
  65         labelList npc(nPoints(), 0);
  66
  67         forAll (cf, cellI)
  68         {
  69             const labelList curPoints = cf[cellI].labels(faces());
  70
  71             forAll (curPoints, pointI)
  72             {
  73                 label ptI = curPoints[pointI];
  74
  75                 npc[ptI]++;
  76             }
  77         }
  78
  79
  80         // Size and fill cells per point
  81
  82         pcPtr_ = new labelListList(npc.size());
  83         labelListList& pointCellAddr = *pcPtr_;
  84
  85         forAll (pointCellAddr, pointI)
  86         {
  87             pointCellAddr[pointI].setSize(npc[pointI]);
  88         }
  89         npc = 0;
  90
  91
  92         forAll (cf, cellI)
  93         {
  94             const labelList curPoints = cf[cellI].labels(faces());
  95
  96             forAll (curPoints, pointI)
  97             {
  98                 label ptI = curPoints[pointI];
  99
 100                 pointCellAddr[ptI][npc[ptI]++] = cellI;
 101             }
 102         }
 103     }
 104 }
 105
 106
 107 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 108
 109 const Foam::labelListList& Foam::primitiveMesh::pointCells() const
 110 {
 111     if (!pcPtr_)
 112     {
 113         calcPointCells();
 114     }
 115
 116     return *pcPtr_;
 117 }
 118
 119
 120 const Foam::labelList& Foam::primitiveMesh::pointCells
 121 (
 122     const label pointI,
 123     DynamicList<label>& storage
 124 ) const
 125 {
 126     if (hasPointCells())
 127     {
 128         return pointCells()[pointI];
 129     }
 130     else
 131     {
 132         const labelList& own = faceOwner();
 133         const labelList& nei = faceNeighbour();
 134         const labelList& pFaces = pointFaces()[pointI];
 135
 136         storage.clear();
 137
 138         forAll(pFaces, i)
 139         {
 140             const label faceI = pFaces[i];
 141
 142             // Append owner
 143             storage.append(own[faceI]);
 144
 145             // Append neighbour
 146             if (faceI < nInternalFaces())
 147             {
 148                 storage.append(nei[faceI]);
 149             }
 150         }
 151
 152         // Filter duplicates
 153         if (storage.size() > 1)
 154         {
 155             sort(storage);
 156
 157             label n = 1;
 158             for (label i = 1; i < storage.size(); i++)
 159             {
 160                 if (storage[i-1] != storage[i])
 161                 {
 162                     storage[n++] = storage[i];
 163                 }
 164             }
 165
 166             // truncate addressed list
 167             storage.setSize(n);
 168         }
 169
 170         return storage;
 171     }
 172 }
 173
 174
 175 const Foam::labelList& Foam::primitiveMesh::pointCells(const label pointI) const
 176 {
 177     return pointCells(pointI, labels_);
 178 }
 179
 180
 181 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 182
 183 // ************************************************************************* //