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1 | // Copyright (c) 2014 OPEN CASCADE SAS |
2 | // |
3 | // This file is part of Open CASCADE Technology software library. |
4 | // |
5 | // This library is free software; you can redistribute it and/or modify it under |
6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
7 | // by the Free Software Foundation, with special exception defined in the file |
8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
9 | // distribution for complete text of the license and disclaimer of any warranty. |
10 | // |
11 | // Alternatively, this file may be used under the terms of Open CASCADE |
12 | // commercial license or contractual agreement. |
13 | |
14 | #ifndef _Graphic3d_BoundBuffer_HeaderFile |
15 | #define _Graphic3d_BoundBuffer_HeaderFile |
16 | |
17 | #include <Graphic3d_Buffer.hxx> |
18 | |
19 | //! Bounds buffer. |
20 | class Graphic3d_BoundBuffer : public NCollection_Buffer |
21 | { |
22 | public: |
23 | |
24 | //! Empty constructor. |
25 | Graphic3d_BoundBuffer (const Handle(NCollection_BaseAllocator)& theAlloc) |
26 | : NCollection_Buffer (theAlloc), |
27 | Colors (NULL), |
28 | Bounds (NULL), |
29 | NbBounds (0) {} |
30 | |
31 | //! Allocates new empty array |
32 | bool Init (const Standard_Integer theNbBounds, |
33 | const Standard_Boolean theHasColors) |
34 | { |
35 | Colors = NULL; |
36 | Bounds = NULL; |
37 | NbBounds = 0; |
38 | Free(); |
39 | if (theNbBounds < 1) |
40 | { |
41 | return false; |
42 | } |
43 | |
44 | const size_t aBoundsSize = sizeof(Standard_Integer) * theNbBounds; |
45 | const size_t aColorsSize = theHasColors |
46 | ? sizeof(Graphic3d_Vec4) * theNbBounds |
47 | : 0; |
48 | if (!Allocate (aColorsSize + aBoundsSize)) |
49 | { |
50 | Free(); |
51 | return false; |
52 | } |
53 | |
54 | NbBounds = theNbBounds; |
55 | Colors = theHasColors ? reinterpret_cast<Graphic3d_Vec4* >(myData) : NULL; |
56 | Bounds = reinterpret_cast<Standard_Integer* >(theHasColors ? (myData + aColorsSize) : myData); |
57 | return true; |
58 | } |
59 | |
60 | public: |
61 | |
62 | Graphic3d_Vec4* Colors; //!< pointer to facet color values |
63 | Standard_Integer* Bounds; //!< pointer to bounds array |
64 | Standard_Integer NbBounds; //!< number of bounds |
65 | |
66 | }; |
67 | |
68 | typedef NCollection_Handle<Graphic3d_BoundBuffer> Handle(Graphic3d_BoundBuffer); |
69 | |
70 | #endif // _Graphic3d_BoundBuffer_HeaderFile |