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1 | // Copyright (c) 2018 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_MutableIndexBuffer_HeaderFile |
| 15 | #define _Graphic3d_MutableIndexBuffer_HeaderFile |
| 16 | |
| 17 | #include <Graphic3d_IndexBuffer.hxx> |
| 18 | |
| 19 | //! Mutable index buffer. |
| 20 | class Graphic3d_MutableIndexBuffer : public Graphic3d_IndexBuffer |
| 21 | { |
| 22 | DEFINE_STANDARD_RTTIEXT(Graphic3d_MutableIndexBuffer, Graphic3d_IndexBuffer) |
| 23 | public: |
| 24 | |
| 25 | //! Empty constructor. |
| 26 | Graphic3d_MutableIndexBuffer (const Handle(NCollection_BaseAllocator)& theAlloc) : Graphic3d_IndexBuffer (theAlloc) {} |
| 27 | |
| 28 | //! Return TRUE if data can be invalidated. |
| 29 | virtual Standard_Boolean IsMutable() const Standard_OVERRIDE { return Standard_True; } |
| 30 | |
| 31 | //! Return invalidated range. |
| 32 | virtual Graphic3d_BufferRange InvalidatedRange() const Standard_OVERRIDE { return myInvalidatedRange; } |
| 33 | |
| 34 | //! Reset invalidated range. |
| 35 | virtual void Validate() Standard_OVERRIDE { myInvalidatedRange.Clear(); } |
| 36 | |
| 37 | //! Invalidate the entire buffer data. |
| 38 | virtual void Invalidate() Standard_OVERRIDE |
| 39 | { |
| 40 | invalidate (Graphic3d_BufferRange (0, (Standard_Integer )mySize)); |
| 41 | } |
| 42 | |
| 43 | //! Invalidate the given indexes (starting from 0) |
| 44 | void Invalidate (Standard_Integer theIndexLower, Standard_Integer theIndexUpper) |
| 45 | { |
| 46 | Standard_OutOfRange_Raise_if (theIndexLower > theIndexUpper, "Graphic3d_MutableIndexBuffer::Invalidate()"); |
| 47 | invalidate (Graphic3d_BufferRange (Stride * theIndexLower, Stride * (theIndexUpper - theIndexLower + 1))); |
| 48 | } |
| 49 | |
| 50 | //! Invalidate specified sub-range of data (as byte offsets). |
| 51 | void invalidate (const Graphic3d_BufferRange& theRange) { myInvalidatedRange.Unite (theRange); } |
| 52 | |
| 53 | protected: |
| 54 | |
| 55 | Graphic3d_BufferRange myInvalidatedRange; //!< invalidated buffer data range (as byte offsets) |
| 56 | |
| 57 | }; |
| 58 | |
| 59 | #endif // _Graphic3d_MutableIndexBuffer_HeaderFile |
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