elementary_local_operator.hpp

// Copyright (C) 2011-2012 by the BEM++ Authors
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#ifndef bempp_elementary_local_operator_hpp
#define bempp_elementary_local_operator_hpp

#include "../common/common.hpp"

#include "abstract_boundary_operator.hpp"

#include "abstract_boundary_operator_id.hpp"
#include <boost/scoped_ptr.hpp>

namespace Fiber
{

template <typename BasisFunctionType> class CollectionOfShapesetTransformations;
template <typename ResultType> class LocalAssemblerForLocalOperators;
template <typename BasisFunctionType, typename ResultType> class TestTrialIntegral;
} // namespace Fiber

namespace Bempp
{

template <typename BasisFunctionType, typename ResultType> class BoundaryOperator;
template <typename BasisFunctionType_, typename ResultType_>
class ElementaryLocalOperator :
        public AbstractBoundaryOperator<BasisFunctionType_, ResultType_>
{
    typedef AbstractBoundaryOperator<BasisFunctionType_, ResultType_> Base;
public:
    typedef typename Base::BasisFunctionType BasisFunctionType;
    typedef typename Base::ResultType ResultType;
    typedef typename Base::CoordinateType CoordinateType;
    typedef typename Base::QuadratureStrategy QuadratureStrategy;
    typedef Fiber::CollectionOfShapesetTransformations<CoordinateType>
    CollectionOfShapesetTransformations;
    typedef Fiber::CollectionOfShapesetTransformations<CoordinateType>
    CollectionOfBasisTransformations;
    typedef Fiber::TestTrialIntegral<BasisFunctionType, ResultType>
    TestTrialIntegral;

    ElementaryLocalOperator(
            const shared_ptr<const Space<BasisFunctionType> >& domain,
            const shared_ptr<const Space<BasisFunctionType> >& range,
            const shared_ptr<const Space<BasisFunctionType> >& dualToRange,
            const std::string& label,
            int symmetry);

    virtual bool isLocal() const;

protected:
    virtual shared_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormImpl(
            const Context<BasisFunctionType, ResultType>& context) const;

private:
    typedef Fiber::LocalAssemblerForLocalOperators<ResultType> LocalAssembler;

    virtual const CollectionOfShapesetTransformations&
    testTransformations() const = 0;

    virtual const CollectionOfShapesetTransformations&
    trialTransformations() const = 0;

    virtual const TestTrialIntegral& integral() const = 0;

    virtual shared_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInternalImpl2(
            LocalAssembler& assembler,
            const Context<BasisFunctionType, ResultType>& options) const;

    std::auto_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInDenseMode(
            LocalAssembler& assembler,
            const AssemblyOptions& options) const;

    std::auto_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInSparseMode(
            LocalAssembler& assembler,
            const AssemblyOptions& options) const;

    std::auto_ptr<LocalAssembler> makeAssembler(
            const QuadratureStrategy& quadStrategy,
            const AssemblyOptions& options) const;

private:
    shared_ptr<const AbstractBoundaryOperatorId> m_id;
};

} // namespace Bempp

#endif