MueLu_Q2Q1Q2CoarseGridFactory_decl.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER

#ifndef MUELU_Q2Q1Q2COARSEGRIDFACTORY_DECL_HPP
#define MUELU_Q2Q1Q2COARSEGRIDFACTORY_DECL_HPP

#include "MueLu_ConfigDefs.hpp"
#include "MueLu_TwoLevelFactoryBase.hpp"
//#include "MueLu_Q2Q1Q2CoarseGridFactory_fwd.hpp"

#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_Map_fwd.hpp>
#include <Xpetra_MapFactory_fwd.hpp>
#include <Xpetra_CrsMatrixWrap_fwd.hpp>
#include <Xpetra_MultiVector_fwd.hpp>
#include <Xpetra_MultiVectorFactory_fwd.hpp>

#include "MueLu_Level_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"
#include "MueLu_PFactory.hpp"

namespace MueLu {

  template <class Scalar = DefaultScalar,
            class LocalOrdinal = DefaultLocalOrdinal,
            class GlobalOrdinal = DefaultGlobalOrdinal,
            class Node = DefaultNode>
  class Q2Q1Q2CoarseGridFactory : public TwoLevelFactoryBase {
#undef MUELU_Q2Q1Q2COARSEGRIDFACTORY_SHORT
#include "MueLu_UseShortNames.hpp"

  public:


    Q2Q1Q2CoarseGridFactory();

    virtual ~Q2Q1Q2CoarseGridFactory();




    void DeclareInput(Level &fineLevel, Level &coarseLevel) const;




    void Build(Level &fineLevel, Level &coarseLevel) const;

    void BuildCoarseGrid(Level &fineLevel, Level &coarseLevel) const;

    /* For our geometric multigrid needs, we will explicitly build the
       coarse grid here and store it as level data. There are two
       things we care about here: coordinates of the dofs and
       element-dof lists.

       We will assume only that the elements are numbered
       lexicographically, left-to-right, bottom-to-top. The order of
       the degrees of freedom will only be assumed on coarse grids. It
       can be anything on the finest grid (fineLevel.GetLevelID()==1).

       We further assume that the x- and y-components of velocity are
       zippered together: UX1 UY1 UX2 UY2 ETC...
    */


  private:
    // No parameters need to be stored... To save "P", use
    //    coarseLevel.Set("P", finalP, this);

  }; // class Q2Q1Q2CoarseGridFactory

} // namespace MueLu

#define MUELU_Q2Q1Q2COARSEGRIDFACTORY_SHORT
#endif // MUELU_Q2Q1Q2COARSEGRIDFACTORY_DECL_HPP