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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_SVX_SOURCE_ENGINE3D_HELPERMINIMALDEPTH3D_HXX
+#define INCLUDED_SVX_SOURCE_ENGINE3D_HELPERMINIMALDEPTH3D_HXX
+
+// predefines
+
+class E3dCompoundObject;
+
+/** support extracting the minimal depth of a 3d object in its scene
+
+    @param rObject
+    The 3D Object from which the minimal depth needs to be calculated. The scene
+    is defined by the object already
+
+    @return
+    The minimal depth of this object in unified ViewCoordinates. This is the
+    Z-Coordinate of one object point in the range of [0.0 .. 1.0]. ViewCoordinates
+    means the transformations (esp. rotation) of the scene are taken into account
+
+*/
+// support extracting the minimal depth of a 3d object in its scene
+
+double getMinimalDepthInViewCoordinates(const E3dCompoundObject& rObject);
+
+#endif // INCLUDED_SVX_SOURCE_ENGINE3D_HELPERMINIMALDEPTH3D_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */