/usr/include/oce/MeshVS_Buffer.hxx is in liboce-visualization-dev 0.17.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Created by: msv@EUCLIDEX
// Copyright (c) 2007-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef MeshVS_Buffer_HeaderFile
#define MeshVS_Buffer_HeaderFile
#include <Standard.hxx>
/**
* General purpose buffer that is allocated on the stack with a
* constant size MeshVS_BufSize, or is allocated dynamically if the requested
* size exceeds the standard one.
* It is useful when an allocation of an array of unknown size is needed,
* and most often the array is small enough to allocate as automatic C array.
*/
//! define the constant to the size of 10 points
#define MeshVS_BufSize 10*3*sizeof(double)
class MeshVS_Buffer
{
public:
//! Constructor of the buffer of the requested size
MeshVS_Buffer (const Standard_Size theSize)
: myDynData (0)
{
if (theSize > MeshVS_BufSize)
myDynData = Standard::Allocate (theSize);
}
//! Destructor
~MeshVS_Buffer()
{
if (myDynData)
{
Standard::Free (myDynData);
myDynData = 0;
}
}
//! Cast the buffer to the void pointer
operator void* ()
{
return myDynData ? myDynData : (void*) myAutoData;
}
//! Interpret the buffer as a reference to double
operator Standard_Real& ()
{
return * (myDynData ? (Standard_Real*) myDynData : (Standard_Real*) myAutoData);
}
//! Interpret the buffer as a reference to int
operator Standard_Integer& ()
{
return * (myDynData ? (Standard_Integer*) myDynData : (Standard_Integer*) myAutoData);
}
private:
//! Deprecate copy constructor
MeshVS_Buffer(const MeshVS_Buffer&) {}
//! Deprecate copy operation
MeshVS_Buffer& operator=(const MeshVS_Buffer&) {return *this;}
char myAutoData[ MeshVS_BufSize ];
void* myDynData;
};
#endif
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