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
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _CPnts_MyRootFunction_HeaderFile
18 #define _CPnts_MyRootFunction_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
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>
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
43 CPnts_MyRootFunction();
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);
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);
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);
56 //! This is Integral(X0,X,F(X,D)) - L
57 Standard_EXPORT Standard_Boolean Value (const Standard_Real X, Standard_Real& F);
60 Standard_EXPORT Standard_Boolean Derivative (const Standard_Real X, Standard_Real& Df);
62 Standard_EXPORT Standard_Boolean Values (const Standard_Real X, Standard_Real& F, Standard_Real& Df);
77 CPnts_MyGaussFunction myFunction;
80 Standard_Integer myOrder;
87 #include <CPnts_MyRootFunction.lxx>
93 #endif // _CPnts_MyRootFunction_HeaderFile