42cf5bc1 |
1 | // Created on: 1994-09-02 |
2 | // Created by: Yves FRICAUD |
3 | // Copyright (c) 1994-1999 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 _Geom2dLProp_FuncCurExt_HeaderFile |
18 | #define _Geom2dLProp_FuncCurExt_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Standard_Real.hxx> |
25 | #include <math_FunctionWithDerivative.hxx> |
26 | #include <Standard_Boolean.hxx> |
27 | class Geom2d_Curve; |
28 | |
29 | |
30 | //! Function used to find the extremas of curvature in 2d. |
31 | class Geom2dLProp_FuncCurExt : public math_FunctionWithDerivative |
32 | { |
33 | public: |
34 | |
35 | DEFINE_STANDARD_ALLOC |
36 | |
37 | |
38 | Standard_EXPORT Geom2dLProp_FuncCurExt(const Handle(Geom2d_Curve)& C, const Standard_Real Tol); |
39 | |
40 | //! Returns the value for the variable <X>. |
41 | Standard_EXPORT Standard_Boolean Value (const Standard_Real X, Standard_Real& F); |
42 | |
43 | //! Returns the derivative for the variable <X>. |
44 | Standard_EXPORT Standard_Boolean Derivative (const Standard_Real X, Standard_Real& D); |
45 | |
46 | //! Returns the value of the function and the derivative |
47 | //! for the variable <X>. |
48 | Standard_EXPORT Standard_Boolean Values (const Standard_Real X, Standard_Real& F, Standard_Real& D); |
49 | |
50 | //! True if Param corresponds to a minus |
51 | //! of the radius of curvature. |
52 | Standard_EXPORT Standard_Boolean IsMinKC (const Standard_Real Param) const; |
53 | |
54 | |
55 | |
56 | |
57 | protected: |
58 | |
59 | |
60 | |
61 | |
62 | |
63 | private: |
64 | |
65 | |
66 | |
67 | Handle(Geom2d_Curve) theCurve; |
68 | Standard_Real epsX; |
69 | |
70 | |
71 | }; |
72 | |
73 | |
74 | |
75 | |
76 | |
77 | |
78 | |
79 | #endif // _Geom2dLProp_FuncCurExt_HeaderFile |