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_ArcCosine_HeaderFile 18 #define _Expr_ArcCosine_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_Type.hxx> 22 23 #include <Expr_UnaryExpression.hxx> 24 #include <Standard_Boolean.hxx> 25 #include <Standard_Real.hxx> 26 #include <Expr_Array1OfNamedUnknown.hxx> 27 #include <TColStd_Array1OfReal.hxx> 28 class Standard_NumericError; 29 class Expr_NotEvaluable; 30 class Expr_GeneralExpression; 31 class Expr_NamedUnknown; 32 class TCollection_AsciiString; 33 34 35 class Expr_ArcCosine; 36 DEFINE_STANDARD_HANDLE(Expr_ArcCosine, Expr_UnaryExpression) 37 38 39 class Expr_ArcCosine : public Expr_UnaryExpression 40 { 41 42 public: 43 44 45 //! Creates the Arccos of <exp> 46 Standard_EXPORT Expr_ArcCosine(const Handle(Expr_GeneralExpression)& exp); 47 48 //! Returns a GeneralExpression after a simplification 49 //! of the arguments of <me>. 50 Standard_EXPORT Handle(Expr_GeneralExpression) ShallowSimplified() const Standard_OVERRIDE; 51 52 //! Returns a copy of <me> having the same unknowns and functions. 53 Standard_EXPORT Handle(Expr_GeneralExpression) Copy() const Standard_OVERRIDE; 54 55 //! Tests if <me> and <Other> define the same expression. 56 //! This method does not include any simplification before 57 //! testing. 58 Standard_EXPORT Standard_Boolean IsIdentical (const Handle(Expr_GeneralExpression)& Other) const Standard_OVERRIDE; 59 60 Standard_EXPORT Standard_Boolean IsLinear() const Standard_OVERRIDE; 61 62 //! Returns the derivative on <X> unknown of <me>. 63 Standard_EXPORT Handle(Expr_GeneralExpression) Derivative (const Handle(Expr_NamedUnknown)& X) const Standard_OVERRIDE; 64 65 //! Returns the value of <me> (as a Real) by 66 //! replacement of <vars> by <vals>. 67 //! Raises NotEvaluable if <me> contains NamedUnknown not 68 //! in <vars> or NumericError if result cannot be computed. 69 Standard_EXPORT Standard_Real Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& vals) const Standard_OVERRIDE; 70 71 //! returns a string representing <me> in a readable way. 72 Standard_EXPORT TCollection_AsciiString String() const Standard_OVERRIDE; 73 74 75 76 77 DEFINE_STANDARD_RTTIEXT(Expr_ArcCosine,Expr_UnaryExpression) 78 79 protected: 80 81 82 83 84 private: 85 86 87 88 89 }; 90 91 92 93 94 95 96 97 #endif // _Expr_ArcCosine_HeaderFile 98