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[occt.git] / src / CPnts / CPnts_MyRootFunction.hxx
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42cf5bc1 1// Created on: 1991-07-19
2// Created by: Isabelle GRIGNON
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 _CPnts_MyRootFunction_HeaderFile
18#define _CPnts_MyRootFunction_HeaderFile
19
20#include <Standard.hxx>
21#include <Standard_DefineAlloc.hxx>
22#include <Standard_Handle.hxx>
23
24#include <CPnts_MyGaussFunction.hxx>
25#include <Standard_Real.hxx>
26#include <Standard_Integer.hxx>
27#include <math_FunctionWithDerivative.hxx>
28#include <CPnts_RealFunction.hxx>
29#include <Standard_Address.hxx>
30#include <Standard_Boolean.hxx>
31
32
33//! Implements a function for the Newton algorithm to find the
34//! solution of Integral(F) = L
35//! (compute Length and Derivative of the curve for Newton)
36class CPnts_MyRootFunction : public math_FunctionWithDerivative
37{
38public:
39
40 DEFINE_STANDARD_ALLOC
41
42
43 CPnts_MyRootFunction();
44
45 //! F is a pointer on a function D is a client data
46 //! Order is the order of integration to use
47 Standard_EXPORT void Init (const CPnts_RealFunction& F, const Standard_Address D, const Standard_Integer Order);
48
49 //! We want to solve Integral(X0,X,F(X,D)) = L
50 Standard_EXPORT void Init (const Standard_Real X0, const Standard_Real L);
51
52 //! We want to solve Integral(X0,X,F(X,D)) = L
53 //! with given tolerance
54 Standard_EXPORT void Init (const Standard_Real X0, const Standard_Real L, const Standard_Real Tol);
55
56 //! This is Integral(X0,X,F(X,D)) - L
57 Standard_EXPORT Standard_Boolean Value (const Standard_Real X, Standard_Real& F);
58
59 //! This is F(X,D)
60 Standard_EXPORT Standard_Boolean Derivative (const Standard_Real X, Standard_Real& Df);
61
62 Standard_EXPORT Standard_Boolean Values (const Standard_Real X, Standard_Real& F, Standard_Real& Df);
63
64
65
66
67protected:
68
69
70
71
72
73private:
74
75
76
77 CPnts_MyGaussFunction myFunction;
78 Standard_Real myX0;
79 Standard_Real myL;
80 Standard_Integer myOrder;
81 Standard_Real myTol;
82
83
84};
85
86
87#include <CPnts_MyRootFunction.lxx>
88
89
90
91
92
93#endif // _CPnts_MyRootFunction_HeaderFile