--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/graph/InvertEdges.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2003, 2005 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.InvertEdges;
+
+import dwt.dwthelper.utils;
+import dwtx.draw2d.graph.GraphVisitor;
+import dwtx.draw2d.graph.DirectedGraph;
+import dwtx.draw2d.graph.Edge;
+
+/**
+ * Inverts any edges which are marked as backwards or "feedback" edges.
+ *
+ * @author Daniel Lee
+ * @since 2.1.2
+ */
+class InvertEdges : GraphVisitor {
+
+/**
+ *
+ * @see GraphVisitor#visit(dwtx.draw2d.graph.DirectedGraph)
+ */
+public void visit(DirectedGraph g) {
+    for (int i = 0; i < g.edges.size(); i++) {
+        Edge e = g.edges.getEdge(i);
+        if (e.isFeedback)
+            e.invert();
+    }
+}
+
+}