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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/primitive3d/groupprimitive3d.hxx>
+
+
+namespace drawinglayer::primitive3d
+ {
+ // This primitive is used to represent geometry for non-visible objects,
+ // e.g. a 3D cube without fill attributes. To still be able to use
+ // primitives for HitTest functionality, the 3d decompositions produce
+ // an as much as possible simplified fill geometry encapsulated in this
+ // primitive when there is no fill geometry. Currently, the 3d hit test
+ // uses only areas, so maybe in a further enhanced version this will change
+ // to 'if neither filled nor lines' creation criteria. The whole primitive
+ // decomposes to nothing, so no one not knowing it will be influenced. Only
+ // helper processors for hit test (and maybe BoundRect extractors) will
+ // use it and its children subcontent.
+ class HiddenGeometryPrimitive3D final : public GroupPrimitive3D
+ {
+ public:
+ explicit HiddenGeometryPrimitive3D(const Primitive3DContainer& rChildren);
+
+ // despite returning an empty decomposition since it's no visualisation data,
+ // range calculation is intended to use hidden geometry, so
+ // the local implementation will return the children's range
+ virtual basegfx::B3DRange getB3DRange(const geometry::ViewInformation3D& rViewInformation) const override;
+
+ /// The default implementation returns an empty sequence
+ virtual Primitive3DContainer get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const override;
+
+ // provide unique ID
+ DeclPrimitive3DIDBlock()
+ };
+
+} // end of namespace drawinglayer::primitive3d
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */