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, 64 insertions, 0 deletions

diff --git a/src/electronics/simulation/currentsource.cpp b/src/electronics/simulation/currentsource.cpp
new file mode 100644
index 0000000..675b0b7
--- /dev/null
+++ b/src/electronics/simulation/currentsource.cpp
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *   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"
+#include "matrix.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;
+}