voltagepoint.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 "voltagepoint.h"
#include "elementset.h"

VoltagePoint::VoltagePoint( const double voltage )
        : Element::Element()
{
        m_voltage = -voltage;
        m_numCBranches = 1;
        m_numCNodes = 1;
}


VoltagePoint::~VoltagePoint()
{
}


void VoltagePoint::setVoltage( const double v )
{
        if(-v == m_voltage ) return;

        if(p_eSet) p_eSet->setCacheInvalidated();

        m_voltage = -v;
        add_initial_dc();
}


void VoltagePoint::add_map()
{
        if(!b_status) return;
        
        if(!p_cnode[0]->isGround) {
                p_A->setUse_b(p_cnode[0]->n(), p_cbranch[0]->n(), Map::et_constant, true);
                p_A->setUse_c(p_cbranch[0]->n(), p_cnode[0]->n(), Map::et_constant, true);
        }
}


void VoltagePoint::add_initial_dc()
{
        if(!b_status) return;
        
        A_b(0, 0) = -1;
        A_c(0, 0) = -1;
        
        b_v(0) = m_voltage;
}


void VoltagePoint::updateCurrents()
{
        if(!b_status) return;
        m_cnodeI[0] = p_cbranch[0]->i;
}

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