include/opencascade/Expr_Different.hxx

0001 // Created on: 1991-01-14
0002 // Created by: Arnaud BOUZY
0003 // Copyright (c) 1991-1999 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 _Expr_Different_HeaderFile
0018 #define _Expr_Different_HeaderFile
0019
0020 #include <Standard.hxx>
0021
0022 #include <Expr_SingleRelation.hxx>
0023 class Expr_GeneralExpression;
0024 class Expr_GeneralRelation;
0025 class TCollection_AsciiString;
0026
0027 class Expr_Different : public Expr_SingleRelation
0028 {
0029
0030 public:
0031   //! Creates the relation <exp1> # <exp2>.
0032   Standard_EXPORT Expr_Different(const occ::handle<Expr_GeneralExpression>& exp1,
0033                                  const occ::handle<Expr_GeneralExpression>& exp2);
0034
0035   Standard_EXPORT bool IsSatisfied() const override;
0036
0037   //! Returns a GeneralRelation after replacement of
0038   //! NamedUnknowns by an associated expression, and after
0039   //! values computation.
0040   Standard_EXPORT occ::handle<Expr_GeneralRelation> Simplified() const override;
0041
0042   //! Replaces NamedUnknowns by associated expressions,
0043   //! and computes values in <me>.
0044   Standard_EXPORT void Simplify() override;
0045
0046   //! Returns a copy of <me> having the same unknowns and
0047   //! functions.
0048   Standard_EXPORT occ::handle<Expr_GeneralRelation> Copy() const override;
0049
0050   //! returns a string representing <me> in a readable way.
0051   Standard_EXPORT TCollection_AsciiString String() const override;
0052
0053   DEFINE_STANDARD_RTTIEXT(Expr_Different, Expr_SingleRelation)
0054 };
0055
0056 #endif // _Expr_Different_HeaderFile