Chaste Release::3.1
Kerchoffs2003ContractionModel.hpp
00001 /*
00002 
00003 Copyright (c) 2005-2012, University of Oxford.
00004 All rights reserved.
00005 
00006 University of Oxford means the Chancellor, Masters and Scholars of the
00007 University of Oxford, having an administrative office at Wellington
00008 Square, Oxford OX1 2JD, UK.
00009 
00010 This file is part of Chaste.
00011 
00012 Redistribution and use in source and binary forms, with or without
00013 modification, are permitted provided that the following conditions are met:
00014  * Redistributions of source code must retain the above copyright notice,
00015    this list of conditions and the following disclaimer.
00016  * Redistributions in binary form must reproduce the above copyright notice,
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00022 
00023 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00024 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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00026 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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00034 */
00035 
00036 #ifndef KERCHOFFS2003CONTRACTIONMODEL_HPP_
00037 #define KERCHOFFS2003CONTRACTIONMODEL_HPP_
00038 
00039 #include "AbstractOdeBasedContractionModel.hpp"
00040 #include "OdeSystemInformation.hpp"
00041 #include <math.h>
00042 
00048 class Kerchoffs2003ContractionModel : public AbstractOdeBasedContractionModel
00049 {
00050 friend class TestContractionModels;
00051 
00052 private:
00053     static const double a6;  
00054     static const double a7;  
00055     static const double T0;  
00056     static const double Ea;  
00057     static const double v0;  
00058     static const double ls0; 
00059     static const double tr;  
00060     static const double td;  
00061     static const double b;   
00062     static const double ld;  
00065     static const double mActivationVoltage = 0;
00067     static const double mDeactivationVoltage = -70;
00068 
00070     double mSarcomereLength;
00072     double mActivationTime;
00076     bool mIsActivated;
00079     bool mElectricallyUnactivated;
00080 
00086     double GetActiveTension(double lengthOfContractileElement);
00087 
00088 
00089 public:
00091     Kerchoffs2003ContractionModel();
00092 
00093 
00100     void EvaluateYDerivatives(double time, const std::vector<double>& rY, std::vector<double>& rDY);
00101 
00107     void SetInputParameters(ContractionModelInputParameters& rInputParameters);
00108 
00114     void SetStretchAndStretchRate(double stretch, double stretchRate);
00115 
00119     double GetActiveTension();
00120 
00124     bool IsStretchDependent()
00125     {
00126         return true;
00127     }
00128 
00132     bool IsStretchRateDependent()
00133     {
00134         return false;
00135     }
00136 
00141     double GetNextActiveTension();
00142 };
00143 
00144 
00145 #endif /*KERCHOFFS2003CONTRACTIONMODEL_HPP_*/