ProtocolS1.cpp

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///////////////////////////////////////////////////////////////////////////////
//
// File: ProtocolS1.cpp
//
// 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.
//
// 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
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: S1 impulse protocol.
//
///////////////////////////////////////////////////////////////////////////////
 
#include <CardiacEPSolver/Stimuli/ProtocolS1.h>
#include <tinyxml.h>
 
namespace Nektar
{
std::string ProtocolS1::className =
    GetProtocolFactory().RegisterCreatorFunction(
        "ProtocolS1", ProtocolS1::create, "S1 stimulus protocol.");
 
/**
 * @class ProtocolS1
 *
 * The Stimuli class and derived classes implement a range of stimuli.
 * The stimulus contains input stimuli that can be applied throughout the
 * domain, on specified regions determined by the derived classes of
 * Stimulus, at specified frequencies determined by the derived classes of
 * Protocol.
 */
 
/**
 * Protocol base class constructor.
 */
ProtocolS1::ProtocolS1(const LibUtilities::SessionReaderSharedPtr &pSession,
                       const TiXmlElement *pXml)
    : Protocol(pSession, pXml)
{
    m_session = pSession;
 
    if (!pXml)
    {
        return;
    }
 
    // Declare temporary XML element pointer
    const TiXmlElement *pXmlparameter;
 
    // Read each variable, extract text and convert to floating-point
    pXmlparameter = pXml->FirstChildElement("START");
    m_start       = atof(pXmlparameter->GetText());
 
    pXmlparameter = pXml->FirstChildElement("DURATION");
    m_dur         = atof(pXmlparameter->GetText());
 
    pXmlparameter   = pXml->FirstChildElement("S1CYCLELENGTH");
    m_s1cyclelength = atof(pXmlparameter->GetText());
 
    pXmlparameter = pXml->FirstChildElement("NUM_S1");
    m_num_s1      = atof(pXmlparameter->GetText());
}
 
/**
 * Initialise the protocol. Allocate workspace and variable storage.
 */
void ProtocolS1::Initialise()
{
}
 
/**
 *
 */
NekDouble ProtocolS1::v_GetAmplitude(const NekDouble time)
{
    // Number of complete S1 intervals
    NekDouble a = floor((time - m_start) / m_s1cyclelength);
 
    // Time since start of most recent S1 interval
    NekDouble time1 = time - a * m_s1cyclelength - m_start;
 
    if ((time1 > 0) && (a < m_num_s1) && (time1 < m_dur))
    {
        return 1.0;
    }
 
    return 0.0;
}
 
/**
 *
 */
void ProtocolS1::v_GenerateSummary(SolverUtils::SummaryList &s)
{
    boost::ignore_unused(s);
}
 
/**
 *
 */
void ProtocolS1::v_SetInitialConditions()
{
}
 
} // namespace Nektar