src/INTERP_KERNEL/PolyhedronIntersectorP0P1.txx

   1 //  Copyright (C) 2007-2008  CEA/DEN, EDF R&D
   2 //
   3 //  This library is free software; you can redistribute it and/or
   4 //  modify it under the terms of the GNU Lesser General Public
   5 //  License as published by the Free Software Foundation; either
   6 //  version 2.1 of the License.
   7 //
   8 //  This library is distributed in the hope that it will be useful,
   9 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 //  Lesser General Public License for more details.
  12 //
  13 //  You should have received a copy of the GNU Lesser General Public
  14 //  License along with this library; if not, write to the Free Software
  15 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 //  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19 #ifndef __POLYHEDRONINTERSECTORP0P1_TXX__
  20 #define __POLYHEDRONINTERSECTORP0P1_TXX__
  21
  22 #include "PolyhedronIntersectorP0P1.hxx"
  23 #include "Intersector3DP0P1.txx"
  24 #include "MeshUtils.hxx"
  25
  26 #include "SplitterTetra.txx"
  27
  28 namespace INTERP_KERNEL
  29 {
  30
  31   /**
  32    * Constructor creating object from target cell global number
  33    * The constructor first calculates the necessary nodes,
  34    * (depending on the splitting policy) and then splits the hexahedron into
  35    * tetrahedra, placing these in the internal vector _tetra.
  36    *
  37    * @param targetMesh  mesh containing the target elements
  38    * @param srcMesh     mesh containing the source elements
  39    * @param policy      splitting policy to be used
  40    */
  41   template<class MyMeshType, class MyMatrix>
  42   PolyhedronIntersectorP0P1<MyMeshType,MyMatrix>::PolyhedronIntersectorP0P1(const MyMeshType& targetMesh, const MyMeshType& srcMesh, SplittingPolicy policy):Intersector3DP0P1<MyMeshType,MyMatrix>(targetMesh,srcMesh),_split(targetMesh,srcMesh,policy)
  43   {
  44   }
  45
  46   /**
  47    * Destructor.
  48    * Liberates the SplitterTetra objects and potential sub-node points that have been allocated.
  49    *
  50    */
  51   template<class MyMeshType, class MyMatrix>
  52   PolyhedronIntersectorP0P1<MyMeshType,MyMatrix>::~PolyhedronIntersectorP0P1()
  53   {
  54     releaseArrays();
  55   }
  56
  57   template<class MyMeshType, class MyMatrix>
  58   void PolyhedronIntersectorP0P1<MyMeshType,MyMatrix>::releaseArrays()
  59   {
  60     for(typename std::vector< SplitterTetra<MyMeshType>* >::iterator iter = _tetra.begin(); iter != _tetra.end(); ++iter)
  61       delete *iter;
  62     _split.releaseArrays();
  63     _tetra.clear();
  64   }
  65
  66   /**
  67    * Calculates the volume of intersection of an element in the source mesh and the target element
  68    * represented by the object.
  69    * The calculation is performed by calling the corresponding method for
  70    * each SplitterTetra object created by the splitting.
  71    *
  72    * @param targetCell in C mode.
  73    * @param srcCells in C mode.
  74    *
  75    */
  76   template<class MyMeshType, class MyMatrix>
  77   void PolyhedronIntersectorP0P1<MyMeshType,MyMatrix>::intersectCells(ConnType targetCell, const std::vector<ConnType>& srcCells, MyMatrix& res)
  78   {
  79     SplitterTetra<MyMeshType>* subTetras[24];
  80     int nbOfNodesT=Intersector3D<MyMeshType,MyMatrix>::_target_mesh.getNumberOfNodesOfElement(OTT<ConnType,numPol>::indFC(targetCell));
  81     releaseArrays();
  82     _split.splitTargetCell(targetCell,nbOfNodesT,_tetra);
  83     for(typename std::vector<ConnType>::const_iterator iterCellS=srcCells.begin();iterCellS!=srcCells.end();iterCellS++)
  84       {
  85         for(typename std::vector<SplitterTetra<MyMeshType>*>::iterator iter = _tetra.begin(); iter != _tetra.end(); ++iter)
  86           {
  87             (*iter)->splitIntoDualCells(subTetras);
  88             for(int i=0;i<24;i++)
  89               {
  90                 SplitterTetra<MyMeshType> *tmp=subTetras[i];
  91                 double volume = tmp->intersectSourceCell(*iterCellS);
  92                 if(volume!=0.)
  93                   {
  94                     typename MyMatrix::value_type& resRow=res[tmp->getId(0)];
  95                     typename MyMatrix::value_type::const_iterator iterRes=resRow.find(OTT<ConnType,numPol>::indFC(*iterCellS));
  96                     if(iterRes==resRow.end())
  97                       resRow.insert(std::make_pair(OTT<ConnType,numPol>::indFC(*iterCellS),volume));
  98                     else
  99                       {
 100                         double val=(*iterRes).second+volume;
 101                         resRow.erase(OTT<ConnType,numPol>::indFC(*iterCellS));
 102                         resRow.insert(std::make_pair(OTT<ConnType,numPol>::indFC(*iterCellS),val));
 103                       }
 104                   }
 105                 delete tmp;
 106               }
 107           }
 108       }
 109   }
 110 }
 111
 112 #endif