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_PCFOfEPCOfELPCOfLocateExtPC2d_HeaderFile
18 #define _Extrema_PCFOfEPCOfELPCOfLocateExtPC2d_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <gp_Pnt2d.hxx>
25 #include <TColStd_SequenceOfReal.hxx>
26 #include <TColStd_SequenceOfInteger.hxx>
27 #include <Extrema_SequenceOfPOnCurv2d.hxx>
28 #include <Standard_Boolean.hxx>
29 #include <math_FunctionWithDerivative.hxx>
30 class Standard_OutOfRange;
31 class Standard_TypeMismatch;
32 class Adaptor2d_Curve2d;
33 class Extrema_Curve2dTool;
34 class Extrema_POnCurv2d;
38 class Extrema_PCFOfEPCOfELPCOfLocateExtPC2d : public math_FunctionWithDerivative
45 Standard_EXPORT Extrema_PCFOfEPCOfELPCOfLocateExtPC2d();
47 Standard_EXPORT Extrema_PCFOfEPCOfELPCOfLocateExtPC2d(const gp_Pnt2d& P, const Adaptor2d_Curve2d& C);
49 //! sets the field mycurve of the function.
50 Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C);
52 //! sets the field P of the function.
53 Standard_EXPORT void SetPoint (const gp_Pnt2d& P);
55 //! Calculation of F(U).
56 Standard_EXPORT Standard_Boolean Value (const Standard_Real U, Standard_Real& F) Standard_OVERRIDE;
58 //! Calculation of F'(U).
59 Standard_EXPORT Standard_Boolean Derivative (const Standard_Real U, Standard_Real& DF) Standard_OVERRIDE;
61 //! Calculation of F(U) and F'(U).
62 Standard_EXPORT Standard_Boolean Values (const Standard_Real U, Standard_Real& F, Standard_Real& DF) Standard_OVERRIDE;
64 //! Save the found extremum.
65 Standard_EXPORT virtual Standard_Integer GetStateNumber() Standard_OVERRIDE;
67 //! Return the number of found extrema.
68 Standard_EXPORT Standard_Integer NbExt() const;
70 //! Returns the Nth distance.
71 Standard_EXPORT Standard_Real SquareDistance (const Standard_Integer N) const;
73 //! Shows if the Nth distance is a minimum.
74 Standard_EXPORT Standard_Boolean IsMin (const Standard_Integer N) const;
76 //! Returns the Nth extremum.
77 Standard_EXPORT const Extrema_POnCurv2d& Point (const Standard_Integer N) const;
79 //! Determines boundaries of subinterval for find of root.
80 Standard_EXPORT void SubIntervalInitialize (const Standard_Real theUfirst, const Standard_Real theUlast);
82 //! Computes a Tol value. If 1st derivative of curve
83 //! |D1|<Tol, it is considered D1=0.
84 Standard_EXPORT Standard_Real SearchOfTolerance();
100 Standard_Address myC;
104 TColStd_SequenceOfReal mySqDist;
105 TColStd_SequenceOfInteger myIsMin;
106 Extrema_SequenceOfPOnCurv2d myPoint;
107 Standard_Boolean myPinit;
108 Standard_Boolean myCinit;
109 Standard_Boolean myD1Init;
111 Standard_Integer myMaxDerivOrder;
112 Standard_Real myUinfium;
113 Standard_Real myUsupremum;
124 #endif // _Extrema_PCFOfEPCOfELPCOfLocateExtPC2d_HeaderFile