Added KDE3 version of ktechlab

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ktechlab@1095338 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 73 insertions, 0 deletions

diff --git a/src/electronics/simulation/voltagepoint.cpp b/src/electronics/simulation/voltagepoint.cpp
new file mode 100644
index 0000000..44d3b01
--- /dev/null
+++ b/src/electronics/simulation/voltagepoint.cpp
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *   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 "matrix.h"
+#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;
+}
+
+
+
+
+