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diff --git a/include/basebmp/tools.hxx b/include/basebmp/tools.hxx
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+++ b/include/basebmp/tools.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_BASEBMP_TOOLS_HXX
+#define INCLUDED_BASEBMP_TOOLS_HXX
+
+#include <basegfx/range/b2ibox.hxx>
+#include <basegfx/point/b2ipoint.hxx>
+#include <vigra/tuple.hxx>
+#include <vigra/diff2d.hxx>
+
+namespace basebmp
+{
+    inline vigra::Diff2D topLeft( const basegfx::B2IBox& rRange )
+    { return vigra::Diff2D(rRange.getMinX(),rRange.getMinY()); }
+
+    inline vigra::Diff2D bottomRight( const basegfx::B2IBox& rRange )
+    { return vigra::Diff2D(rRange.getMaxX(),rRange.getMaxY()); }
+
+    template< class Iterator, class Accessor >
+    inline vigra::triple<Iterator,Iterator,Accessor>
+    destIterRange(Iterator const&          begin,
+                  Accessor const&          accessor,
+                  const basegfx::B2IBox& rRange)
+    {
+        return vigra::triple<Iterator,Iterator,Accessor>(
+            begin + topLeft(rRange),
+            begin + bottomRight(rRange),
+            accessor);
+    }
+
+    template< class Iterator, class Accessor >
+    inline vigra::triple<Iterator,Iterator,Accessor>
+    srcIterRange(Iterator const&          begin,
+                 Accessor const&          accessor,
+                 const basegfx::B2IBox& rRange)
+    {
+        return vigra::triple<Iterator,Iterator,Accessor>(
+            begin + topLeft(rRange),
+            begin + bottomRight(rRange),
+            accessor);
+    }
+
+    template< class Iterator, class Accessor >
+    inline vigra::pair<Iterator,Accessor>
+    srcIter(Iterator const&          begin,
+            Accessor const&          accessor,
+            const basegfx::B2IPoint& rPt)
+    {
+        return vigra::pair<Iterator,Accessor>(
+            begin + vigra::Diff2D(rPt.getX(),rPt.getY()),
+            accessor);
+    }
+
+    template< class Iterator, class Accessor >
+    inline vigra::pair<Iterator,Accessor>
+    destIter(Iterator const&          begin,
+             Accessor const&          accessor,
+             const basegfx::B2IPoint& rPt)
+    {
+        return vigra::pair<Iterator,Accessor>(
+            begin + vigra::Diff2D(rPt.getX(),rPt.getY()),
+            accessor);
+    }
+}
+
+#endif /* INCLUDED_BASEBMP_TOOLS_HXX */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */