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diff --git a/include/drawinglayer/primitive2d/embedded3dprimitive2d.hxx b/include/drawinglayer/primitive2d/embedded3dprimitive2d.hxx
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+++ b/include/drawinglayer/primitive2d/embedded3dprimitive2d.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 .
+ */
+
+#pragma once
+
+#include <drawinglayer/drawinglayerdllapi.h>
+
+#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
+#include <drawinglayer/primitive3d/baseprimitive3d.hxx>
+#include <drawinglayer/geometry/viewinformation3d.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+
+
+// Embedded3DPrimitive2D class
+
+namespace drawinglayer::primitive2d
+{
+        /** Embedded3DPrimitive2D class
+
+            This is a helper primitive which allows embedding of single 3D
+            primitives to the 2D primitive logic. It will get the scene it's
+            involved and thus the 3D transformation. With this information it
+            is able to provide 2D range data for a 3D primitive.
+
+            This primitive will not be visualized and decomposes to a yellow
+            2D rectangle to visualize that this should never be visualized
+         */
+        class DRAWINGLAYER_DLLPUBLIC Embedded3DPrimitive2D final : public BufferedDecompositionPrimitive2D
+        {
+        private:
+            /// the sequence of 3d primitives
+            primitive3d::Primitive3DContainer                    mxChildren3D;
+
+            /// the 2D scene object transformation
+            basegfx::B2DHomMatrix                               maObjectTransformation;
+
+            /// the 3D transformations
+            geometry::ViewInformation3D                         maViewInformation3D;
+
+            /** if the embedded 3D primitives contain shadow, these parameters are needed
+                to extract the shadow which is a sequence of 2D primitives and may expand
+                the 2D range. Since every single 3D object in a scene may individually
+                have shadow or not, these values need to be provided and prepared. The shadow
+                distance itself (a 2D transformation) is part of the 3D shadow definition
+             */
+            basegfx::B3DVector                                  maLightNormal;
+            double                                              mfShadowSlant;
+            basegfx::B3DRange                                   maScene3DRange;
+
+            /// the primitiveSequence for on-demand created shadow primitives (see mbShadow3DChecked)
+            Primitive2DContainer                                   maShadowPrimitives;
+
+            /// #i96669# add simple range buffering for this primitive
+            basegfx::B2DRange                                   maB2DRange;
+
+            /** flag if given 3D geometry is already checked for shadow definitions and 2d shadows
+                are created in maShadowPrimitives
+             */
+            bool                                                mbShadow3DChecked : 1;
+
+            /// private helpers
+            bool impGetShadow3D() const;
+
+            /// local decomposition.
+            virtual void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;
+
+        public:
+            /// constructor
+            Embedded3DPrimitive2D(
+                const primitive3d::Primitive3DContainer& rxChildren3D,
+                const basegfx::B2DHomMatrix& rObjectTransformation,
+                const geometry::ViewInformation3D& rViewInformation3D,
+                const basegfx::B3DVector& rLightNormal,
+                double fShadowSlant,
+                const basegfx::B3DRange& rScene3DRange);
+
+            /// data read access
+            const primitive3d::Primitive3DContainer& getChildren3D() const { return mxChildren3D; }
+            const basegfx::B2DHomMatrix& getObjectTransformation() const { return maObjectTransformation; }
+            const geometry::ViewInformation3D& getViewInformation3D() const { return maViewInformation3D; }
+            const basegfx::B3DVector& getLightNormal() const { return maLightNormal; }
+            double getShadowSlant() const { return mfShadowSlant; }
+            const basegfx::B3DRange& getScene3DRange() const { return maScene3DRange; }
+
+            /// compare operator
+            virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+            /// get range
+            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
+
+            /// provide unique ID
+            virtual sal_uInt32 getPrimitive2DID() const override;
+        };
+} // end of namespace drawinglayer::primitive2d
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */