File indexing completed on 2024-04-28 05:43:15

0001 /***************************************************************************
0002  *   Copyright (C) 2003-2004 by David Saxton                               *
0003  *   david@bluehaze.org                                                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  ***************************************************************************/
0010 
0011 #include "currentsignal.h"
0012 #include "element.h"
0013 
0014 CurrentSignal::CurrentSignal(double delta, double current)
0015     : Reactive::Reactive(delta)
0016 {
0017     m_current = current;
0018     m_oldCurrent = m_newCurrent = 0.0;
0019     m_numCNodes = 2;
0020 }
0021 
0022 CurrentSignal::~CurrentSignal()
0023 {
0024 }
0025 
0026 void CurrentSignal::setCurrent(double i)
0027 {
0028     // Instead of calling step again, we can just "adjust" what the current should be
0029     m_newCurrent *= i / m_current;
0030     m_current = i;
0031     addCurrents();
0032 }
0033 
0034 void CurrentSignal::add_initial_dc()
0035 {
0036     m_oldCurrent = 0.0;
0037     // time_step() will handle everything for us now :)
0038 }
0039 
0040 void CurrentSignal::updateCurrents()
0041 {
0042     m_cnodeI[1] = m_newCurrent;
0043     m_cnodeI[0] = -m_newCurrent;
0044 }
0045 
0046 void CurrentSignal::time_step()
0047 {
0048     m_newCurrent = m_current * advance(m_delta);
0049     addCurrents();
0050 }
0051 
0052 void CurrentSignal::addCurrents()
0053 {
0054     if (!b_status)
0055         return;
0056 
0057     if (m_newCurrent == m_oldCurrent)
0058         return;
0059 
0060     b_i(0) -= m_newCurrent - m_oldCurrent;
0061     b_i(1) += m_newCurrent - m_oldCurrent;
0062 
0063     m_oldCurrent = m_newCurrent;
0064 }