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currentsignal.cpp

/***************************************************************************
 *   Copyright (C) 2003-2004 by David Saxton                               *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "currentsignal.h"
#include "element.h"
#include "matrix.h"

CurrentSignal::CurrentSignal( const double delta, const double current )
      : Reactive::Reactive(delta)
{
      m_current = current;
      m_oldCurrent = m_newCurrent = 0.;
      m_numCNodes = 2;
}

CurrentSignal::~CurrentSignal()
{
}

void CurrentSignal::setCurrent( const double i )
{
      if ( m_oldCurrent != m_newCurrent ) add_initial_dc();
      m_newCurrent *= i/m_current; // Instead of calling step again, we can just "adjust" what the current should be
      m_current = i;
      add_initial_dc();
}


00036 void CurrentSignal::add_map()
{
      // We don't need a map for current signal :-)
}


00042 void CurrentSignal::add_initial_dc()
{
      if ( !b_status )
            return;
      
      if ( m_newCurrent == m_oldCurrent )
            return;

      b_i( 0 ) -= m_newCurrent-m_oldCurrent;
      b_i( 1 ) += m_newCurrent-m_oldCurrent;
      
      m_oldCurrent = m_newCurrent;
}

00056 void CurrentSignal::updateCurrents()
{
      m_cnodeI[1] = m_newCurrent;
      m_cnodeI[0] = -m_newCurrent;
}

00062 void CurrentSignal::time_step()
{
      add_initial_dc(); // Make sure our old and new are synced
      m_newCurrent = m_current*advance();
      add_initial_dc();
}

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