discrete_blocked_boundary_operator.hpp

// Copyright (C) 2011-2012 by the BEM++ Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// THE SOFTWARE.

#ifndef bempp_discrete_blocked_boundary_operator_hpp
#define bempp_discrete_blocked_boundary_operator_hpp

#include "bempp/common/config_ahmed.hpp"
#include "bempp/common/config_trilinos.hpp"

#include "discrete_boundary_operator.hpp"

#include "../common/shared_ptr.hpp"
#include "../fiber/_2d_array.hpp"

#ifdef WITH_TRILINOS
#include <Teuchos_RCP.hpp>
#endif // WITH_TRILINOS

class blcluster;

namespace Bempp
{

template <typename ValueType>
class DiscreteBlockedBoundaryOperator : public DiscreteBoundaryOperator<ValueType>
{
public:
    typedef DiscreteBoundaryOperator<ValueType> Base;

    DiscreteBlockedBoundaryOperator(
            const Fiber::_2dArray<shared_ptr<const Base> >& blocks,
            const std::vector<size_t>& rowCounts,
            const std::vector<size_t>& columnCounts);

    virtual unsigned int rowCount() const;
    virtual unsigned int columnCount() const;

    virtual shared_ptr<const DiscreteBoundaryOperator<ValueType> > getComponent(int row, int col) const;

    virtual void addBlock(const std::vector<int>& rows,
                          const std::vector<int>& cols,
                          const ValueType alpha,
                          arma::Mat<ValueType>& block) const;

    shared_ptr<const DiscreteBlockedBoundaryOperator<ValueType> >
    asDiscreteAcaBlockedBoundaryOperator(double eps=-1, int maximumRank=-1) const;

    virtual shared_ptr<const DiscreteBoundaryOperator<ValueType> >
    asDiscreteAcaBoundaryOperator(double eps=-1, int maximumRank=-1,
                                  bool interleave=false) const;

#ifdef WITH_TRILINOS
public:
    virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > domain() const;
    virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > range() const;

protected:
    virtual bool opSupportedImpl(Thyra::EOpTransp M_trans) const;
#endif

private:
    virtual void applyBuiltInImpl(const TranspositionMode trans,
                                  const arma::Col<ValueType>& x_in,
                                  arma::Col<ValueType>& y_inout,
                                  const ValueType alpha,
                                  const ValueType beta) const;

#ifdef WITH_AHMED
    void mergeHMatrices(
        unsigned currentLevel,
        const std::vector<Fiber::_2dArray<unsigned> >& rowSonSizes,
        const std::vector<Fiber::_2dArray<unsigned> >& colSonSizes,
        const Fiber::_2dArray<const blcluster*> clusters,
        const Fiber::_2dArray<size_t> indexOffsets,
        blcluster* result) const;
#endif // WITH_AHMED

private:
    Fiber::_2dArray<shared_ptr<const Base> > m_blocks;
    std::vector<size_t> m_rowCounts;
    std::vector<size_t> m_columnCounts;
#ifdef WITH_TRILINOS
    Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > m_domainSpace;
    Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > m_rangeSpace;
#endif

};

} // namespace Bempp

#endif