| 42cf5bc1 |
1 | // Created on: 1992-02-20 |
| 2 | // Created by: Remy GILET |
| 3 | // Copyright (c) 1992-1999 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 _Geom2dGcc_FunctionTanCuPnt_HeaderFile |
| 18 | #define _Geom2dGcc_FunctionTanCuPnt_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Geom2dAdaptor_Curve.hxx> |
| 25 | #include <gp_Pnt2d.hxx> |
| 26 | #include <math_FunctionWithDerivative.hxx> |
| 27 | #include <Standard_Boolean.hxx> |
| 28 | #include <Standard_Real.hxx> |
| 29 | class Geom2dAdaptor_Curve; |
| 30 | class gp_Pnt2d; |
| 31 | |
| 32 | |
| 33 | //! This abstract class describes a Function of 1 Variable |
| 34 | //! used to find a line tangent to a curve and passing |
| 35 | //! through a point. |
| 36 | class Geom2dGcc_FunctionTanCuPnt : public math_FunctionWithDerivative |
| 37 | { |
| 38 | public: |
| 39 | |
| 40 | DEFINE_STANDARD_ALLOC |
| 41 | |
| 42 | |
| 43 | Standard_EXPORT Geom2dGcc_FunctionTanCuPnt(const Geom2dAdaptor_Curve& C, const gp_Pnt2d& Point); |
| 44 | |
| 45 | //! Computes the value of the function F for the variable X. |
| 46 | //! It returns True if the computation is successfully done, |
| 47 | //! False otherwise. |
| 48 | Standard_EXPORT Standard_Boolean Value (const Standard_Real X, Standard_Real& F); |
| 49 | |
| 50 | //! Computes the derivative of the function F for the variable X. |
| 51 | //! It returns True if the computation is successfully done, |
| 52 | //! False otherwise. |
| 53 | Standard_EXPORT Standard_Boolean Derivative (const Standard_Real X, Standard_Real& Deriv); |
| 54 | |
| 55 | //! Computes the value and the derivative of the function F |
| 56 | //! for the variable X. |
| 57 | //! It returns True if the computation is successfully done, |
| 58 | //! False otherwise. |
| 59 | Standard_EXPORT Standard_Boolean Values (const Standard_Real X, Standard_Real& F, Standard_Real& Deriv); |
| 60 | |
| 61 | |
| 62 | |
| 63 | |
| 64 | protected: |
| 65 | |
| 66 | |
| 67 | |
| 68 | |
| 69 | |
| 70 | private: |
| 71 | |
| 72 | |
| 73 | |
| 74 | Geom2dAdaptor_Curve TheCurv; |
| 75 | gp_Pnt2d ThePoint; |
| 76 | |
| 77 | |
| 78 | }; |
| 79 | |
| 80 | |
| 81 | |
| 82 | |
| 83 | |
| 84 | |
| 85 | |
| 86 | #endif // _Geom2dGcc_FunctionTanCuPnt_HeaderFile |
projects / occt.git / blame