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42cf5bc1 1// Created on: 1997-03-28
2// Created by: Philippe MANGIN
3// Copyright (c) 1997-1999 Matra Datavision
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
19
20#include <Standard.hxx>
21#include <Standard_DefineAlloc.hxx>
22#include <Standard_Handle.hxx>
23
24#include <math_FunctionWithDerivative.hxx>
25#include <Standard_Boolean.hxx>
26#include <Standard_Real.hxx>
27class Geom_Curve;
28
29
30//! Searches singularities on fillet.
31//! F(t) = (C1(t) - C2(t)).(C1'(t) - C2'(t));
32class ChFi3d_SearchSing : public math_FunctionWithDerivative
33{
34public:
35
36 DEFINE_STANDARD_ALLOC
37
38
39 Standard_EXPORT ChFi3d_SearchSing(const Handle(Geom_Curve)& C1, const Handle(Geom_Curve)& C2);
40
41 //! computes the value of the function <F> for the
42 //! variable <X>.
43 //! returns True if the computation was done successfully,
44 //! False otherwise.
45 Standard_EXPORT Standard_Boolean Value (const Standard_Real X, Standard_Real& F);
46
47 //! computes the derivative <D> of the function
48 //! for the variable <X>.
49 //! Returns True if the calculation were successfully done,
50 //! False otherwise.
51 Standard_EXPORT Standard_Boolean Derivative (const Standard_Real X, Standard_Real& D);
52
53 //! computes the value <F> and the derivative <D> of the
54 //! function for the variable <X>.
55 //! Returns True if the calculation were successfully done,
56 //! False otherwise.
57 Standard_EXPORT Standard_Boolean Values (const Standard_Real X, Standard_Real& F, Standard_Real& D);
58
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61
62protected:
63
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66
67
68private:
69
70
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72 Handle(Geom_Curve) myC1;
73 Handle(Geom_Curve) myC2;
74
75
76};
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