1 // Created on: 1992-10-21
2 // Created by: Christian CAILLET
3 // Copyright (c) 1992-1999 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 _IGESData_SingleParentEntity_HeaderFile
18 #define _IGESData_SingleParentEntity_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_Type.hxx>
23 #include <IGESData_IGESEntity.hxx>
24 #include <Standard_Integer.hxx>
25 class Standard_OutOfRange;
26 class IGESData_IGESEntity;
29 class IGESData_SingleParentEntity;
30 DEFINE_STANDARD_HANDLE(IGESData_SingleParentEntity, IGESData_IGESEntity)
32 //! a SingleParentEntity is a kind of IGESEntity which can refer
33 //! to a (Single) Parent, from Associativities list of an Entity
34 //! a effective SingleParent definition entity must inherit it
35 class IGESData_SingleParentEntity : public IGESData_IGESEntity
41 //! Returns the parent designated by the Entity, if only one !
42 Standard_EXPORT virtual Handle(IGESData_IGESEntity) SingleParent() const = 0;
44 //! Returns the count of Entities designated as children
45 Standard_EXPORT virtual Standard_Integer NbChildren() const = 0;
47 //! Returns a Child given its rank
48 Standard_EXPORT virtual Handle(IGESData_IGESEntity) Child (const Standard_Integer num) const = 0;
53 DEFINE_STANDARD_RTTIEXT(IGESData_SingleParentEntity,IGESData_IGESEntity)
73 #endif // _IGESData_SingleParentEntity_HeaderFile