currentsource.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 "currentsource.h"
#include "elementset.h"

CurrentSource::CurrentSource( const double current )
        : Element::Element()
{
        m_i = current;
        m_numCNodes = 2;
}


CurrentSource::~CurrentSource()
{
}


void CurrentSource::setCurrent( const double i )
{
        if ( i == m_i ) return;

        if (p_eSet)
                p_eSet->setCacheInvalidated();
        
        // Remove the old current
        m_i = -m_i;
        add_initial_dc();
        
        m_i = i;
        add_initial_dc();
}


void CurrentSource::add_map()
{
        // We don't need a map for current source :-)
}


void CurrentSource::add_initial_dc()
{
        if (!b_status)
                return;
        
        b_i( 0 ) -= m_i;
        b_i( 1 ) += m_i;
}


void CurrentSource::updateCurrents()
{
        m_cnodeI[0] = -m_i;
        m_cnodeI[1] = m_i;
}

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