1 // Created on: 1997-02-05
2 // Created by: Alexander BRIVIN
3 // Copyright (c) 1997-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Vrml_Instancing_HeaderFile
18 #define _Vrml_Instancing_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <TCollection_AsciiString.hxx>
25 #include <Standard_OStream.hxx>
26 class TCollection_AsciiString;
29 //! defines "instancing" - using the same instance of a node
31 //! It is accomplished by using the "DEF" and "USE" keywords.
32 //! The DEF keyword both defines a named node, and creates a single
34 //! The USE keyword indicates that the most recently defined instance
35 //! should be used again.
36 //! If several nades were given the same name, then the last DEF
37 //! encountered during parsing "wins".
38 //! DEF/USE is limited to a single file.
46 //! Adds "DEF <myName>" in anOStream (VRML file).
47 Standard_EXPORT Vrml_Instancing(const TCollection_AsciiString& aString);
49 //! Adds "USE <myName>" in anOStream (VRML file).
50 Standard_EXPORT Standard_OStream& DEF (Standard_OStream& anOStream) const;
52 Standard_EXPORT Standard_OStream& USE (Standard_OStream& anOStream) const;
67 TCollection_AsciiString myName;
78 #endif // _Vrml_Instancing_HeaderFile