hypersingular_integral_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
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// THE SOFTWARE.

#ifndef bempp_hypersingular_integral_operator_hpp
#define bempp_hypersingular_integral_operator_hpp

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

#include "abstract_boundary_operator.hpp"
#include "../common/types.hpp"
#include "../fiber/types.hpp"

#include <vector>
#include "../common/armadillo_fwd.hpp"

namespace Fiber
{

template <typename CoordinateType> class CollectionOfShapesetTransformations;
template <typename KernelType> class CollectionOfKernels;
template <typename BasisFunctionType, typename KernelType, typename ResultType>
class TestKernelTrialIntegral;
template <typename ResultType> class LocalAssemblerForOperators;
} // namespace Fiber

namespace Bempp
{

class EvaluationOptions;
template <typename BasisFunctionType, typename ResultType> class GridFunction;
template <typename ValueType> class InterpolatedFunction;
template <typename BasisFunctionType_, typename KernelType_, typename ResultType_>
class HypersingularIntegralOperator :
        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::LocalAssemblerForIntegralOperators<ResultType> LocalAssembler;
    typedef KernelType_ KernelType;
    typedef Fiber::CollectionOfShapesetTransformations<CoordinateType>
    CollectionOfShapesetTransformations;
    typedef Fiber::CollectionOfShapesetTransformations<CoordinateType>
    CollectionOfBasisTransformations;
    typedef Fiber::CollectionOfKernels<KernelType> CollectionOfKernels;
    typedef Fiber::TestKernelTrialIntegral<BasisFunctionType, KernelType, ResultType>
    TestKernelTrialIntegral;

    HypersingularIntegralOperator(
            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:
    virtual const CollectionOfKernels& kernels() const = 0;

    virtual const CollectionOfShapesetTransformations&
    testTransformations() const = 0;

    virtual const CollectionOfShapesetTransformations&
    trialTransformations() const = 0;

    virtual const TestKernelTrialIntegral& integral() const = 0;

    virtual const CollectionOfKernels& offDiagonalKernels() const = 0;

    virtual const CollectionOfShapesetTransformations&
    offDiagonalTestTransformations() const = 0;

    virtual const CollectionOfShapesetTransformations&
    offDiagonalTrialTransformations() const = 0;

    virtual const TestKernelTrialIntegral& offDiagonalIntegral() const = 0;

private:
    std::pair<shared_ptr<LocalAssembler>, shared_ptr<LocalAssembler> >
    makeAssemblers(
            const QuadratureStrategy& quadStrategy,
            const AssemblyOptions& options) const;

    std::pair<shared_ptr<LocalAssembler>, shared_ptr<LocalAssembler> >
    reallyMakeAssemblers(
            const QuadratureStrategy& quadStrategy,
            const shared_ptr<const GeometryFactory>& testGeometryFactory,
            const shared_ptr<const GeometryFactory>& trialGeometryFactory,
            const shared_ptr<const Fiber::RawGridGeometry<CoordinateType> >& testRawGeometry,
            const shared_ptr<const Fiber::RawGridGeometry<CoordinateType> >& trialRawGeometry,
            const shared_ptr<const std::vector<const Fiber::Shapeset<BasisFunctionType>*> >& testShapesets,
            const shared_ptr<const std::vector<const Fiber::Shapeset<BasisFunctionType>*> >& trialShapesets,
            const shared_ptr<const Fiber::OpenClHandler>& openClHandler,
            const ParallelizationOptions& parallelizationOptions,
            VerbosityLevel::Level verbosityLevel,
            bool cacheSingularIntegrals,
            bool makeSeparateOffDiagonalAssembler) const;

    shared_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInternal(
            LocalAssembler& standardAssembler, LocalAssembler& offDiagonalAssembler,
            const Context<BasisFunctionType, ResultType>& context) const;

    std::auto_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInDenseMode(
            LocalAssembler& assembler,
            const Context<BasisFunctionType, ResultType>& context) const;
    std::auto_ptr<DiscreteBoundaryOperator<ResultType_> >
    assembleWeakFormInAcaMode(
            LocalAssembler& standardAssembler, LocalAssembler& offDiagonalAssembler,
            const Context<BasisFunctionType, ResultType>& context) const;

};

} // namespace Bempp

#endif