1 // Created on: 1991-01-14 2 // Created by: Arnaud BOUZY 3 // Copyright (c) 1991-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 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. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _Expr_PolyFunction_HeaderFile 18 #define _Expr_PolyFunction_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_Type.hxx> 22 23 #include <Expr_PolyExpression.hxx> 24 #include <Expr_Array1OfGeneralExpression.hxx> 25 #include <Standard_Boolean.hxx> 26 #include <Standard_Real.hxx> 27 #include <Expr_Array1OfNamedUnknown.hxx> 28 #include <TColStd_Array1OfReal.hxx> 29 class Expr_GeneralFunction; 30 class Standard_NumericError; 31 class Standard_OutOfRange; 32 class Expr_NotEvaluable; 33 class Expr_GeneralExpression; 34 class Expr_NamedUnknown; 35 class TCollection_AsciiString; 36 37 38 class Expr_PolyFunction; 39 DEFINE_STANDARD_HANDLE(Expr_PolyFunction, Expr_PolyExpression) 40 41 //! Defines the use of an n-ary function in an expression 42 //! with given arguments. 43 class Expr_PolyFunction : public Expr_PolyExpression 44 { 45 46 public: 47 48 49 //! Creates <me> as <func>(<exps_1>,<exps_2>,...,<exps_n>) 50 Standard_EXPORT Expr_PolyFunction(const Handle(Expr_GeneralFunction)& func, const Expr_Array1OfGeneralExpression& exps); 51 52 //! Returns the function defining <me>. 53 Standard_EXPORT Handle(Expr_GeneralFunction) Function() const; 54 55 //! Returns a GeneralExpression after a simplification 56 //! of the arguments of <me>. 57 Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE; 58 59 //! Returns a copy of <me> having the same unknowns and functions. 60 Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE; 61 62 //! Tests if <me> and <Other> define the same expression. 63 //! This method does not include any simplification before 64 //! testing. 65 Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE; 66 67 Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE; 68 69 //! Returns the derivative on <X> unknown of <me> 70 Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE; 71 72 //! Returns the value of <me> (as a Real) by 73 //! replacement of <vars> by <vals>. 74 //! Raises NotEvaluable if <me> contains NamedUnknown not 75 //! in <vars> or NumericError if result cannot be computed. 76 Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE; 77 78 //! returns a string representing <me> in a readable way. 79 Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE; 80 81 82 83 84 DEFINE_STANDARD_RTTIEXT(Expr_PolyFunction,Expr_PolyExpression) 85 86 protected: 87 88 89 90 91 private: 92 93 94 Handle(Expr_GeneralFunction) myFunction; 95 96 97 }; 98 99 100 101 102 103 104 105 #endif // _Expr_PolyFunction_HeaderFile 106