include/opencascade/IGESData_SingleParentEntity.hxx

0001 // Created on: 1992-10-21
0002 // Created by: Christian CAILLET
0003 // Copyright (c) 1992-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _IGESData_SingleParentEntity_HeaderFile
0018 #define _IGESData_SingleParentEntity_HeaderFile
0019
0020 #include <Standard.hxx>
0021
0022 #include <IGESData_IGESEntity.hxx>
0023 #include <Standard_Integer.hxx>
0024
0025 //! a SingleParentEntity is a kind of IGESEntity which can refer
0026 //! to a (Single) Parent, from Associativities list of an Entity
0027 //! a effective SingleParent definition entity must inherit it
0028 class IGESData_SingleParentEntity : public IGESData_IGESEntity
0029 {
0030
0031 public:
0032   //! Returns the parent designated by the Entity, if only one !
0033   Standard_EXPORT virtual occ::handle<IGESData_IGESEntity> SingleParent() const = 0;
0034
0035   //! Returns the count of Entities designated as children
0036   Standard_EXPORT virtual int NbChildren() const = 0;
0037
0038   //! Returns a Child given its rank
0039   Standard_EXPORT virtual occ::handle<IGESData_IGESEntity> Child(const int num) const = 0;
0040
0041   DEFINE_STANDARD_RTTIEXT(IGESData_SingleParentEntity, IGESData_IGESEntity)
0042 };
0043
0044 #endif // _IGESData_SingleParentEntity_HeaderFile