0031668: Visualization - WebGL sample doesn't work on Emscripten 1.39

[occt.git] / src / TDF / TDF_DeltaOnAddition.cxx

// Created by: DAUTRY Philippe
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 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.

//      	-----------------------
// Version:	0.0
//Version	Date		Purpose
//		0.0	Oct 10 1997	Creation

#include <Standard_GUID.hxx>
#include <Standard_Type.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_DeltaOnAddition.hxx>
#include <TDF_Label.hxx>

IMPLEMENT_STANDARD_RTTIEXT(TDF_DeltaOnAddition,TDF_AttributeDelta)

//=======================================================================
//function : TDF_DeltaOnAddition
//purpose  : 
//=======================================================================
TDF_DeltaOnAddition::TDF_DeltaOnAddition
(const Handle(TDF_Attribute)& anAtt)
: TDF_AttributeDelta(anAtt)
{}


//=======================================================================
//function : Apply
//purpose  : 
//=======================================================================

void TDF_DeltaOnAddition::Apply() 
{
  Handle(TDF_Attribute) currentAtt;
  if (Label().FindAttribute(ID(),currentAtt)) {
    Label().ForgetAttribute (currentAtt);
  }
}