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diff --git a/include/drawinglayer/primitive3d/polygontubeprimitive3d.hxx b/include/drawinglayer/primitive3d/polygontubeprimitive3d.hxx
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+++ b/include/drawinglayer/primitive3d/polygontubeprimitive3d.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_DRAWINGLAYER_PRIMITIVE3D_POLYGONTUBEPRIMITIVE3D_HXX
+#define INCLUDED_DRAWINGLAYER_PRIMITIVE3D_POLYGONTUBEPRIMITIVE3D_HXX
+
+#include <drawinglayer/drawinglayerdllapi.h>
+
+#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
+
+//////////////////////////////////////////////////////////////////////////////
+// predefines
+
+namespace basegfx {
+    class B3DPolyPolygon;
+    class B3DHomMatrix;
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace drawinglayer
+{
+    namespace primitive3d
+    {
+        /** PolygonStrokePrimitive3D class
+
+            This 3D primitive extends a 3D hairline to a 3D tube which is
+            e.g. used for fat lines in 3D. It's decomposition will create all
+            3D objects needed for the line tubes and the edge roundings
+            in full 3D.
+         */
+        class DRAWINGLAYER_DLLPUBLIC PolygonTubePrimitive3D : public PolygonHairlinePrimitive3D
+        {
+        private:
+            /// hold the last decompositon since it's expensive
+            Primitive3DSequence                         maLast3DDecomposition;
+
+            /// visualisation parameters
+            double                                      mfRadius;
+            double                                      mfDegreeStepWidth;
+            double                                      mfMiterMinimumAngle;
+            basegfx::B2DLineJoin                        maLineJoin;
+            com::sun::star::drawing::LineCap            maLineCap;
+
+        protected:
+            /** access methods to maLast3DDecomposition. The usage of this methods may allow
+                later thread-safe stuff to be added if needed. Only to be used by getDecomposition()
+                implementations for buffering the last decomposition.
+             */
+            const Primitive3DSequence& getLast3DDecomposition() const { return maLast3DDecomposition; }
+            void setLast3DDecomposition(const Primitive3DSequence& rNew) { maLast3DDecomposition = rNew; }
+
+            /// local decomposition.
+            Primitive3DSequence impCreate3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const;
+
+        public:
+            /// constructor
+            PolygonTubePrimitive3D(
+                const basegfx::B3DPolygon& rPolygon,
+                const basegfx::BColor& rBColor,
+                double fRadius,
+                basegfx::B2DLineJoin aLineJoin,
+                com::sun::star::drawing::LineCap aLineCap,
+                double fDegreeStepWidth = 10.0 * F_PI180,
+                double fMiterMinimumAngle = 15.0 * F_PI180);
+
+            /// data read access
+            double getRadius() const { return mfRadius; }
+            double getDegreeStepWidth() const { return mfDegreeStepWidth; }
+            double getMiterMinimumAngle() const { return mfMiterMinimumAngle; }
+            basegfx::B2DLineJoin getLineJoin() const { return maLineJoin; }
+            com::sun::star::drawing::LineCap getLineCap() const { return maLineCap; }
+
+            /// compare operator
+            virtual bool operator==(const BasePrimitive3D& rPrimitive) const;
+
+            /** local decomposition. Use own buffering since we are not derived from
+                BufferedDecompositionPrimitive3D
+             */
+            virtual Primitive3DSequence get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const;
+
+            /// provide unique ID
+            DeclPrimitrive3DIDBlock()
+        };
+    } // end of namespace primitive3d
+} // end of namespace drawinglayer
+
+//////////////////////////////////////////////////////////////////////////////
+
+#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE3D_POLYGONTUBEPRIMITIVE3D_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */