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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) |
36 | class CPnts_MyRootFunction : public math_FunctionWithDerivative |
37 | { |
38 | public: |
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 | |
67 | protected: |
68 | |
69 | |
70 | |
71 | |
72 | |
73 | private: |
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 |