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CoarseAverage.H

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00001 /* _______              __
00002   / ___/ /  ___  __ _  / /  ___
00003  / /__/ _ \/ _ \/  ' \/ _ \/ _ \
00004  \___/_//_/\___/_/_/_/_.__/\___/ 
00005 */
00006 //
00007 // This software is copyright (C) by the Lawrence Berkeley
00008 // National Laboratory.  Permission is granted to reproduce
00009 // this software for non-commercial purposes provided that
00010 // this notice is left intact.
00011 // 
00012 // It is acknowledged that the U.S. Government has rights to
00013 // this software under Contract DE-AC03-765F00098 between
00014 // the U.S.  Department of Energy and the University of
00015 // California.
00016 //
00017 // This software is provided as a professional and academic
00018 // contribution for joint exchange. Thus it is experimental,
00019 // is provided ``as is'', with no warranties of any kind
00020 // whatsoever, no support, no promise of updates, or printed
00021 // documentation. By using this software, you acknowledge
00022 // that the Lawrence Berkeley National Laboratory and
00023 // Regents of the University of California shall have no
00024 // liability with respect to the infringement of other
00025 // copyrights by any part of this software.
00026 //
00027 
00028 #ifndef _COARSE_AVERAGE_H_
00029 #define _COARSE_AVERAGE_H_
00030 
00031 #include "REAL.H"
00032 #include "BaseFab.H"
00033 #include "FArrayBox.H"
00034 #include "LevelData.H"
00035 
00036 class DisjointBoxLayout;
00037 
00039 
00046 class CoarseAverage
00047 {
00048 public:
00050 
00053   CoarseAverage();
00054 
00056 
00059   ~CoarseAverage();
00060 
00062 
00072   CoarseAverage(const DisjointBoxLayout& a_fine_domain,
00073                 int a_numcomps,
00074                 int a_ref_ratio);
00075 
00077 
00089   void
00090   define(const DisjointBoxLayout& a_fine_domain, // the fine level domain
00091          int a_numcomps,                         // the number of components
00092          int a_ref_ratio);                       // the refinement ratio
00093 
00094 
00096 
00103   bool 
00104   isDefined() const;
00105 
00107 
00127   //     this method would like to be const, but the work array is changed.
00128   //     this suggests that the work array should not be persistent.
00129   void
00130   averageToCoarse(LevelData<FArrayBox>& a_coarse_data,
00131                   const LevelData<FArrayBox>& a_fine_data);
00132 
00133 protected:
00134   void
00135   averageGridData(BaseFab<Real>& a_coarse,
00136                   const BaseFab<Real>& a_fine,
00137                   int a_ref_ratio)
00138     const;
00139 
00140 protected:
00141   bool is_defined;
00142   // the refinement ratio
00143   int m_ref_ratio;
00144   // work array for the coarsening of the fine data, of the same "shape"
00145   // as the fine data.
00146   LevelData<FArrayBox> m_coarsened_fine_data;
00147 };
00148 
00149 #endif

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