1 // Created on: 2013-12-25
2 // Created by: Varvara POSKONINA
3 // Copyright (c) 1999-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _OpenGl_BVHClipPrimitiveSet_HeaderFile
17 #define _OpenGl_BVHClipPrimitiveSet_HeaderFile
19 #include <BVH_PrimitiveSet.hxx>
20 #include <NCollection_Array1.hxx>
22 #include <OpenGl_Vec.hxx>
23 #include <OpenGl_Structure.hxx>
24 #include <OpenGl_SequenceOfStructure.hxx>
26 typedef NCollection_Array1<OpenGl_SequenceOfStructure> OpenGl_ArrayOfStructure;
28 //! Set of OpenGl_Structures for building BVH tree.
29 class OpenGl_BVHClipPrimitiveSet : public BVH_PrimitiveSet<Standard_ShortReal, 4>
33 using BVH_PrimitiveSet<Standard_ShortReal, 4>::Box;
37 //! Creates an empty primitive set for BVH clipping.
38 OpenGl_BVHClipPrimitiveSet();
40 //! Returns total number of structures.
41 virtual Standard_Integer Size() const;
43 //! Returns AABB of a structure.
44 virtual Graphic3d_BndBox4f Box (const Standard_Integer theIdx) const;
46 //! Calculates center of the AABB projection onto given axis.
47 virtual Standard_ShortReal Center (const Standard_Integer theIdx,
48 const Standard_Integer theAxis) const;
50 //! Swaps given AABBs.
51 virtual void Swap (const Standard_Integer theIdx1,
52 const Standard_Integer theIdx2);
54 //! Replaces the set by the given array taking into account
55 //! if each structure is cullable or not.
56 void Assign (const OpenGl_ArrayOfStructure& theStructs);
58 //! Adds structure theStruct to the set.
59 void Add (const OpenGl_Structure* theStruct);
61 //! Removes the given OpenGl_Structure from the set.
62 void Remove (const OpenGl_Structure* theStruct);
64 //! Cleans the whole primitive set.
67 //! Returns the structure corresponding to the given id.
68 const OpenGl_Structure* GetStructureById (Standard_Integer theId);
72 NCollection_Sequence<const OpenGl_Structure*> myStructs; //!< Sequence of structures
76 #endif // _OpenGl_BVHClipPrimitiveSet_HeaderFile