1 // Created on: 2013-12-20
2 // Created by: Denis BOGOLEPOV
3 // Copyright (c) 2013-2014 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 _BVH_PrimitiveSet_Header
17 #define _BVH_PrimitiveSet_Header
19 #include <BVH_Object.hxx>
20 #include <BVH_Builder.hxx>
22 //! Set of abstract geometric primitives organized with bounding
23 //! volume hierarchy (BVH). Unlike an object set, this collection
24 //! is designed for storing structural elements of a single object
25 //! (such as triangles in the object triangulation). Because there
26 //! may be a large number of such elements, the implementations of
27 //! this interface should be sufficiently optimized.
28 //! \tparam T Numeric data type
29 //! \tparam N Vector dimension
30 template<class T, int N>
31 class BVH_PrimitiveSet : public BVH_Object<T, N>, public BVH_Set<T, N>
35 using BVH_Set<T, N>::Box;
39 //! Creates set of abstract primitives.
42 //! Releases resources of set of abstract primitives.
43 virtual ~BVH_PrimitiveSet();
47 //! Returns AABB of primitive set.
48 virtual BVH_Box<T, N> Box() const;
50 //! Returns BVH tree (and builds it if necessary).
51 virtual const NCollection_Handle<BVH_Tree<T, N> >& BVH();
53 //! Returns the method (builder) used to construct BVH.
54 virtual const NCollection_Handle<BVH_Builder<T, N> >& Builder() const;
56 //! Sets the method (builder) used to construct BVH.
57 virtual void SetBuilder (NCollection_Handle<BVH_Builder<T, N> >& theBuilder);
61 //! Updates BVH of primitive set.
62 virtual void Update();
66 NCollection_Handle<BVH_Tree<T, N> > myBVH; //!< Constructed bottom-level BVH
67 NCollection_Handle<BVH_Builder<T, N> > myBuilder; //!< Builder for bottom-level BVH
69 mutable BVH_Box<T, N> myBox; //!< Cached bounding box of geometric primitives
73 #include <BVH_PrimitiveSet.lxx>
75 #endif // _BVH_PrimitiveSet_Header