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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
      21             : #define INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
      22             : 
      23             : #include <drawinglayer/drawinglayerdllapi.h>
      24             : 
      25             : #include <drawinglayer/primitive3d/groupprimitive3d.hxx>
      26             : 
      27             : 
      28             : 
      29             : namespace drawinglayer
      30             : {
      31             :     namespace primitive3d
      32             :     {
      33             :         // This primitive is used to represent geometry for non-visible objects,
      34             :         // e.g. a 3D cube without fill attributes. To still be able to use
      35             :         // primitives for HitTest functionality, the 3d decompositions produce
      36             :         // an as much as possible simplified fill geometry encapsulated in this
      37             :         // primtive when there is no fill geometry. Currently, the 3d hit test
      38             :         // uses only areas, so maybe in a further enchanced version this will change
      39             :         // to 'if neither filled nor lines' creation criteria. The whole primitive
      40             :         // decomposes to nothing, so no one not knowing it will be influenced. Only
      41             :         // helper processors for hit test (and maybe BoundRect extractors) will
      42             :         // use it and its children subcontent.
      43          56 :         class DRAWINGLAYER_DLLPUBLIC HiddenGeometryPrimitive3D : public GroupPrimitive3D
      44             :         {
      45             :         public:
      46             :             explicit HiddenGeometryPrimitive3D(const Primitive3DSequence& rChildren);
      47             : 
      48             :             // despite returning an empty decomposition since it's no visualisation data,
      49             :             // range calculation is intended to use hidden geometry, so
      50             :             // the local implementation will return the children's range
      51             :             virtual basegfx::B3DRange getB3DRange(const geometry::ViewInformation3D& rViewInformation) const SAL_OVERRIDE;
      52             : 
      53             :             /// The default implementation returns an empty sequence
      54             :             virtual Primitive3DSequence get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const SAL_OVERRIDE;
      55             : 
      56             :             // provide unique ID
      57             :             DeclPrimitive3DIDBlock()
      58             :         };
      59             :     } // end of namespace primitive3d
      60             : } // end of namespace drawinglayer
      61             : 
      62             : 
      63             : 
      64             : #endif //INCLUDED_DRAWINGLAYER_PRIMITIVE3D_HIDDENGEOMETRYPRIMITIVE3D_HXX
      65             : 
      66             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */