AbstractOdeBasedContractionModel.hpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2010
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 #ifndef ABSTRACTODEBASEDCONTRACTIONMODEL_
00030 #define ABSTRACTODEBASEDCONTRACTIONMODEL_
00031 
00032 #include "AbstractOdeSystem.hpp"
00033 #include "AbstractContractionModel.hpp"
00034 #include "AbstractIvpOdeSolver.hpp"
00035 #include "EulerIvpOdeSolver.hpp"
00036 
00051 class AbstractOdeBasedContractionModel : public AbstractOdeSystem, public AbstractContractionModel
00052 {
00053 protected:
00054 
00057     std::vector<double> mTemporaryStateVariables;
00058 
00060     double mTime;
00061 
00062 public:
00067     AbstractOdeBasedContractionModel(unsigned numStateVariables)
00068         : AbstractOdeSystem(numStateVariables),
00069           AbstractContractionModel(),
00070           mTime(0.0)
00071     {
00072         // note mTemporaryStateVariables not resized here - only resized if needed
00073     }
00074 
00075 
00086     virtual void RunDoNotUpdate(double startTime, double endTime, double timeStep)
00087     {
00088         // save the state variables
00089         if(mTemporaryStateVariables.size()>0)
00090         {
00091             mTemporaryStateVariables.resize(mStateVariables.size());
00092         }
00093         mTemporaryStateVariables = mStateVariables;
00094 
00095         // solve (RunAndUpdate just calls SolveAndUpdateStateVariable() using an euler solver)
00096         RunAndUpdate(startTime, endTime, timeStep);
00097 
00098         // put the solution in mTemporaryStateVariables and return the state variables to its
00099         // original state
00100         for(unsigned i=0; i<mStateVariables.size(); i++)
00101         {
00102             double soln = mStateVariables[i];
00103             mStateVariables[i] = mTemporaryStateVariables[i];
00104             mTemporaryStateVariables[i] = soln;
00105         }
00106 
00107         // note that the end time was saved in RunAndUpdate(): mTime = endTime;
00108     }
00109 
00114     void UpdateStateVariables()
00115     {
00116         // save the state variables
00117         for(unsigned i=0; i<mStateVariables.size(); i++)
00118         {
00119             mStateVariables[i] = mTemporaryStateVariables[i];
00120         }
00121     }
00122 
00135     void RunAndUpdate(double startTime, double endTime, double timeStep)
00136     {
00137         EulerIvpOdeSolver solver;
00138         solver.SolveAndUpdateStateVariable(this, startTime, endTime, timeStep);
00139 
00140         mTime = endTime;
00141     }
00142 };
00143 
00144 
00145 #endif /*ABSTRACTODEBASEDSTRETCHINDEPENDENTCONTRACTIONMODEL_*/

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