FilterThresholdMax.h

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///////////////////////////////////////////////////////////////////////////////
//
// File FilterThresholdMax.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// 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.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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//
// Description: Outputs time when solution first exceeds a threshold value.
//
///////////////////////////////////////////////////////////////////////////////

#ifndef NEKTAR_SOLVERUTILS_FILTERS_FILTERTHRESHOLDMAX_H
#define NEKTAR_SOLVERUTILS_FILTERS_FILTERTHRESHOLDMAX_H

#include <SolverUtils/Filters/Filter.h>

namespace Nektar
{
namespace SolverUtils
{

class FilterThresholdMax : public Filter
{
public:
    friend class MemoryManager<FilterThresholdMax>;

    /// Creates an instance of this class
    static FilterSharedPtr create(
        const LibUtilities::SessionReaderSharedPtr &pSession,
        const std::weak_ptr<EquationSystem>      &pEquation,
        const std::map<std::string, std::string>   &pParams)
    {
        FilterSharedPtr p =MemoryManager<FilterThresholdMax>::
                                AllocateSharedPtr(pSession, pEquation, pParams);
        return p;
    }

    ///Name of the class
    static std::string className;

    SOLVER_UTILS_EXPORT FilterThresholdMax(
        const LibUtilities::SessionReaderSharedPtr &pSession,
        const std::weak_ptr<EquationSystem>      &pEquation,
        const ParamMap &pParams);
    SOLVER_UTILS_EXPORT virtual ~FilterThresholdMax();

protected:
    /// Initialises the filter.
    virtual void v_Initialise(
            const Array<OneD, const MultiRegions::ExpListSharedPtr> &pFields,
            const NekDouble &time);
    /// For each point in domain test if solution is above threshold.
    virtual void v_Update(
            const Array<OneD, const MultiRegions::ExpListSharedPtr> &pFields,
            const NekDouble &time);
    /// Finalise the filter and write out data.
    virtual void v_Finalise(
            const Array<OneD, const MultiRegions::ExpListSharedPtr> &pFields,
            const NekDouble &time);
    /// Indicate that this filter is time dependent.
    virtual bool v_IsTimeDependent();

private:
    /// Storage for recording when each point in domain rises above threshold.
    Array<OneD, NekDouble> m_threshold;
    /// Time at which to start recording.
    NekDouble m_startTime;
    /// Value of threshold.
    NekDouble m_thresholdValue;
    /// Variable on which to detect threshold
    int m_thresholdVar;
    /// Initial value of storage.
    NekDouble m_initialValue;
    /// File into which to write output data.
    std::string m_outputFile;
    /// FieldIO object for writing data.
    LibUtilities::FieldIOSharedPtr m_fld;
};
}
}

#endif /* FILTERTHRESHOLDMAX_H_ */