/usr/include/oce/OpenGl_Element.hxx is in liboce-visualization-dev 0.15-5.
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: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 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 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 OpenGl_Element_Header
#define OpenGl_Element_Header
#include <Handle_OpenGl_Context.hxx>
#include <Handle_OpenGl_Workspace.hxx>
#include <OpenGl_RenderFilter.hxx>
//! Base interface for drawable elements.
class OpenGl_Element
{
public:
Standard_EXPORT OpenGl_Element();
virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const = 0;
//! Release GPU resources.
virtual void Release (const Handle(OpenGl_Context)& theContext) = 0;
template <typename theResource_t>
static void Destroy (const Handle(OpenGl_Context)& theContext,
theResource_t*& theElement)
{
if (theElement == NULL)
{
return;
}
theElement->Release (theContext);
OpenGl_Element* anElement = theElement;
delete anElement;
theElement = NULL;
}
public:
//! Render element if it passes the filtering procedure. This method should
//! be used for elements which can be used in scope of rendering algorithms.
//! E.g. elements of groups during recursive rendering.
//! If render filter is null, pure rendering is performed.
//! @param theWorkspace [in] the rendering workspace.
//! @param theFilter [in] the rendering filter to check whether the element
//! should be rendered or not.
//! @return True if element passes the filering check and is rendered.
inline Standard_Boolean
RenderFiltered (const Handle(OpenGl_Workspace)& theWorkspace,
const Handle(OpenGl_RenderFilter)& theFilter) const
{
if (!theFilter.IsNull() && !theFilter->CanRender (this))
{
return Standard_False;
}
Render (theWorkspace);
return Standard_True;
}
protected:
Standard_EXPORT virtual ~OpenGl_Element();
public:
DEFINE_STANDARD_ALLOC
};
#endif // OpenGl_Element_Header
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