1 // Created on: 1991-02-26
2 // Created by: Isabelle GRIGNON
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _Extrema_PCFOfEPCOfExtPC_HeaderFile
18 #define _Extrema_PCFOfEPCOfExtPC_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
25 #include <Standard_Address.hxx>
26 #include <Standard_Real.hxx>
27 #include <TColStd_SequenceOfReal.hxx>
28 #include <TColStd_SequenceOfInteger.hxx>
29 #include <Extrema_SequenceOfPOnCurv.hxx>
30 #include <Standard_Boolean.hxx>
31 #include <Standard_Integer.hxx>
32 #include <math_FunctionWithDerivative.hxx>
33 class Standard_OutOfRange;
34 class Standard_TypeMismatch;
35 class Adaptor3d_Curve;
36 class Extrema_CurveTool;
37 class Extrema_POnCurv;
41 class Extrema_PCFOfEPCOfExtPC : public math_FunctionWithDerivative
48 Standard_EXPORT Extrema_PCFOfEPCOfExtPC();
50 Standard_EXPORT Extrema_PCFOfEPCOfExtPC(const gp_Pnt& P, const Adaptor3d_Curve& C);
52 //! sets the field mycurve of the function.
53 Standard_EXPORT void Initialize (const Adaptor3d_Curve& C);
55 //! sets the field P of the function.
56 Standard_EXPORT void SetPoint (const gp_Pnt& P);
58 //! Calculation of F(U).
59 Standard_EXPORT Standard_Boolean Value (const Standard_Real U, Standard_Real& F) Standard_OVERRIDE;
61 //! Calculation of F'(U).
62 Standard_EXPORT Standard_Boolean Derivative (const Standard_Real U, Standard_Real& DF) Standard_OVERRIDE;
64 //! Calculation of F(U) and F'(U).
65 Standard_EXPORT Standard_Boolean Values (const Standard_Real U, Standard_Real& F, Standard_Real& DF) Standard_OVERRIDE;
67 //! Save the found extremum.
68 Standard_EXPORT virtual Standard_Integer GetStateNumber() Standard_OVERRIDE;
70 //! Return the nunber of found extrema.
71 Standard_EXPORT Standard_Integer NbExt() const;
73 //! Returns the Nth distance.
74 Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N) const;
76 //! Shows if the Nth distance is a minimum.
77 Standard_EXPORT Standard_Boolean IsMin (const Standard_Integer N) const;
79 //! Returns the Nth extremum.
80 Standard_EXPORT const Extrema_POnCurv& Point (const Standard_Integer N) const;
82 //! Determines boundaries of subinterval for find of root.
83 Standard_EXPORT void SubIntervalInitialize (const Standard_Real theUfirst, const Standard_Real theUlast);
85 //! Computes a Tol value. If 1st derivative of curve
86 //! |D1|<Tol, it is considered D1=0.
87 Standard_EXPORT Standard_Real SearchOfTolerance();
103 Standard_Address myC;
107 TColStd_SequenceOfReal mySqDist;
108 TColStd_SequenceOfInteger myIsMin;
109 Extrema_SequenceOfPOnCurv myPoint;
110 Standard_Boolean myPinit;
111 Standard_Boolean myCinit;
112 Standard_Boolean myD1Init;
114 Standard_Integer myMaxDerivOrder;
115 Standard_Real myUinfium;
116 Standard_Real myUsupremum;
127 #endif // _Extrema_PCFOfEPCOfExtPC_HeaderFile