src/OpenFOAM/meshes/polyMesh/mapPolyMesh/mapPatchChange/mapPatchChange.H

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
   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
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your 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, see <http://www.gnu.org/licenses/>.
  23
  24 Class
  25     Foam::mapPatchChange
  26
  27 Description
  28     Class containing mesh-to-mesh mapping information after a patch change
  29     operation.
  30
  31 SourceFiles
  32
  33 \*---------------------------------------------------------------------------*/
  34
  35 #ifndef mapPatchChange_H
  36 #define mapPatchChange_H
  37
  38 #include "labelList.H"
  39
  40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  41
  42 namespace Foam
  43 {
  44
  45 /*---------------------------------------------------------------------------*\
  46                            Class mapPatchChange Declaration
  47 \*---------------------------------------------------------------------------*/
  48
  49 class mapPatchChange
  50 {
  51     // Private data
  52
  53         //- Old patches
  54         const label nOldPatches_;
  55
  56         //- Patch mapping array
  57         const labelList patchMap_;
  58
  59 public:
  60
  61     // Constructors
  62
  63         //- Construct from components
  64         mapPatchChange(const label nOldPatches, const labelList& patchMap)
  65         :
  66             nOldPatches_(nOldPatches),
  67             patchMap_(patchMap)
  68         {}
  69
  70
  71     // Member Functions
  72
  73         // Access
  74
  75             //- Number of old patches
  76             label nOldPatches() const
  77             {
  78                 return nOldPatches_;
  79             }
  80
  81             //- Patch map. Size of current patches.
  82             //  -1  : patch was added
  83             //  >=0 : old position of patch
  84             //  any original patch which is not in the list has been deleted
  85             const labelList& patchMap() const
  86             {
  87                 return patchMap_;
  88             }
  89
  90
  91         // Utility functions
  92
  93             //- labels of added patches
  94             labelList addedPatches() const
  95             {
  96                 labelList added(patchMap_.size());
  97
  98                 label addedI = 0;
  99
 100                 forAll(patchMap_, patchI)
 101                 {
 102                     if (patchMap_[patchI] == -1)
 103                     {
 104                         added[addedI++] = patchI;
 105                     }
 106                 }
 107                 added.setSize(addedI);
 108                 return added;
 109             }
 110
 111             //- labels (on old mesh) of deleted patches
 112             labelList deletedPatches() const
 113             {
 114                 labelList oldToNew(nOldPatches_, -1);
 115
 116                 // Mark all preserved patches
 117                 forAll(patchMap_, patchI)
 118                 {
 119                     if (patchMap_[patchI] != -1)
 120                     {
 121                         oldToNew[patchMap_[patchI]] = patchI;
 122                     }
 123                 }
 124
 125                 // Extract -1 elements from oldToNew. These are the deleted
 126                 // patches.
 127                 label deletedI = 0;
 128
 129                 forAll(oldToNew, oldPatchI)
 130                 {
 131                     if (oldToNew[oldPatchI] == -1)
 132                     {
 133                         oldToNew[deletedI++] = oldPatchI;
 134                     }
 135                 }
 136
 137                 oldToNew.setSize(deletedI);
 138
 139                 return oldToNew;
 140             }
 141 };
 142
 143
 144 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 145
 146 } // End namespace Foam
 147
 148 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 149
 150 #endif
 151
 152 // ************************************************************************* //