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
0026 class IGESData_SingleParentEntity;
0027 DEFINE_STANDARD_HANDLE(IGESData_SingleParentEntity, IGESData_IGESEntity)
0028
0029 //! a SingleParentEntity is a kind of IGESEntity which can refer
0030 //! to a (Single) Parent, from Associativities list of an Entity
0031 //! a effective SingleParent definition entity must inherit it
0032 class IGESData_SingleParentEntity : public IGESData_IGESEntity
0033 {
0034
0035 public:
0036
0037
0038   //! Returns the parent designated by the Entity, if only one !
0039   Standard_EXPORT virtual Handle(IGESData_IGESEntity) SingleParent() const = 0;
0040
0041   //! Returns the count of Entities designated as children
0042   Standard_EXPORT virtual Standard_Integer NbChildren() const = 0;
0043
0044   //! Returns a Child given its rank
0045   Standard_EXPORT virtual Handle(IGESData_IGESEntity) Child (const Standard_Integer num) const = 0;
0046
0047
0048
0049
0050   DEFINE_STANDARD_RTTIEXT(IGESData_SingleParentEntity,IGESData_IGESEntity)
0051
0052 protected:
0053
0054
0055
0056
0057 private:
0058
0059
0060
0061
0062 };
0063
0064
0065
0066
0067
0068
0069
0070 #endif // _IGESData_SingleParentEntity_HeaderFile