--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/graph/VirtualNode.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * Copyright (c) 2003, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.draw2d.graph.VirtualNode;
+
+import dwt.dwthelper.utils;
+import tango.text.convert.Format;
+
+import dwtx.draw2d.geometry.Insets;
+import dwtx.draw2d.graph.Node;
+import dwtx.draw2d.graph.Edge;
+import dwtx.draw2d.graph.Subgraph;
+
+/**
+ * @deprecated virtual nodes of an edge should be cast to Node.
+ * @author Randy Hudson
+ * @since 2.1.2
+ */
+public class VirtualNode : Node {
+
+/**
+ * The next node.
+ */
+public Node next;
+
+/**
+ * The previous node.
+ */
+public Node prev;
+
+/**
+ * Constructs a virtual node.
+ * @deprecated This class is for internal use only.
+ * @param e the edge
+ * @param i the row
+ */
+public this(Edge e, int i) {
+    super(e);
+    incoming.add(e);
+    outgoing.add(e);
+    width = e.width;
+    height = 0;
+    rank = i;
+    setPadding(new Insets(0, e.padding, 0, e.padding));
+}
+
+/**
+ * Constructor.
+ * @param o object
+ * @param parent subgraph
+ */
+public this(Object o, Subgraph parent) {
+    super(o, parent);
+}
+
+/**
+ * Returns the index of {@link #prev}.
+ * @return median
+ */
+public double medianIncoming() {
+    return prev.index;
+}
+
+/**
+ * Returns the index of {@link #next}.
+ * @return outgoing
+ */
+public double medianOutgoing() {
+    return next.index;
+}
+
+/**
+ * For internal use only.  Returns the original edge weight multiplied by the omega value
+ * for the this node and the node on the previous rank.
+ * @return the weighted weight, or omega
+ */
+public int omega() {
+    Edge e = cast(Edge)data;
+    if (e.source.rank + 1 < rank  && rank < e.target.rank)
+        return 8 * e.weight;
+    return 2 * e.weight;
+}
+
+/**
+ * @see java.lang.Object#toString()
+ */
+public String toString() {
+    if (auto edge = cast(Edge)data )
+        return Format("VN[{}]({})", (edge.vNodes.indexOf(this) + 1) //$NON-NLS-1$
+                , data ); //$NON-NLS-1$ //$NON-NLS-2$
+    return super.toString();
+}
+
+}