src/mesh/cfMesh/meshLibrary/utilities/triSurfaceTools/triSurfacePatchManipulator/triSurfacePatchManipulatorFunctions.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | cfMesh: A library for mesh generation
   4    \\    /   O peration     |
   5     \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
   6      \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of cfMesh.
  10
  11     cfMesh 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 3 of the License, or (at your
  14     option) any later version.
  15
  16     cfMesh 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 cfMesh.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 Description
  25
  26 \*---------------------------------------------------------------------------*/
  27
  28 #include "triSurfacePatchManipulator.H"
  29 #include "helperFunctions.H"
  30 #include "demandDrivenData.H"
  31
  32 # ifdef USE_OMP
  33 #include <omp.h>
  34 # endif
  35
  36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  37
  38 namespace Foam
  39 {
  40
  41 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  42
  43 void triSurfacePatchManipulator::allocateFeatureEdges()
  44 {
  45     const edgeLongList& edges = surf_.edges();
  46     const VRWGraph& pEdges = surf_.pointEdges();
  47
  48     //- allocate featureEdges list
  49     featureEdges_.setSize(edges.size());
  50     featureEdges_ = direction(0);
  51
  52     const edgeLongList& featureEdges = surf_.featureEdges();
  53
  54     forAll(featureEdges, feI)
  55     {
  56         const edge& e = featureEdges[feI];
  57
  58         forAllRow(pEdges, e.start(), peI)
  59         {
  60             const label eI = pEdges(e.start(), peI);
  61
  62             if( edges[eI] == e )
  63                 featureEdges_[eI] |= 1;
  64         }
  65     }
  66 }
  67
  68 void triSurfacePatchManipulator::createPatches()
  69 {
  70     nPatches_ = 0;
  71     facetInPatch_.setSize(surf_.size());
  72     facetInPatch_ = -1;
  73
  74     const VRWGraph& faceEdges = surf_.facetEdges();
  75     const VRWGraph& edgeFaces = surf_.edgeFacets();
  76
  77     forAll(facetInPatch_, triI)
  78     {
  79         if( facetInPatch_[triI] != -1 )
  80             continue;
  81
  82         labelLongList front;
  83         front.append(triI);
  84         facetInPatch_[triI] = nPatches_;
  85
  86         while( front.size() )
  87         {
  88             const label fLabel = front.removeLastElement();
  89
  90             const constRow fEdges = faceEdges[fLabel];
  91
  92             forAll(fEdges, feI)
  93             {
  94                 const label edgeI = fEdges[feI];
  95
  96                 //- check if th edges is marked as a feature edge
  97                 if( featureEdges_[edgeI] )
  98                     continue;
  99
 100                 const constRow eFaces = edgeFaces[edgeI];
 101
 102                 //- stop at non-manifold edges
 103                 if( eFaces.size() != 2 )
 104                     continue;
 105
 106                 label neiTri = eFaces[0];
 107                 if( neiTri == fLabel )
 108                     neiTri = eFaces[1];
 109
 110                 //- do not overwrite existing patch information
 111                 if( surf_[fLabel].region() != surf_[neiTri].region() )
 112                     continue;
 113                 if( facetInPatch_[neiTri] != -1 )
 114                     continue;
 115
 116                 facetInPatch_[neiTri] = nPatches_;
 117                 front.append(neiTri);
 118             }
 119         }
 120
 121         ++nPatches_;
 122     }
 123
 124     Info << "Created " << nPatches_ << " surface patches" << endl;
 125 }
 126
 127 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 128
 129 } // End namespace Foam
 130
 131 // ************************************************************************* //