include/opencascade/Bisector_FunctionH.hxx

0001 // Created on: 1994-04-05
0002 // Created by: Yves FRICAUD
0003 // Copyright (c) 1994-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _Bisector_FunctionH_HeaderFile
0018 #define _Bisector_FunctionH_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <gp_Pnt2d.hxx>
0025 #include <gp_Vec2d.hxx>
0026 #include <math_FunctionWithDerivative.hxx>
0027 #include <Standard_Boolean.hxx>
0028 #include <Standard_Real.hxx>
0029 class Geom2d_Curve;
0030
0031 //! H(v) = (T1.P2(v) - P1) * ||T(v)|| -
0032 //! 2         2
0033 //! (T(v).P2(v) - P1) * ||T1||
0034 class Bisector_FunctionH : public math_FunctionWithDerivative
0035 {
0036 public:
0037   DEFINE_STANDARD_ALLOC
0038
0039   Standard_EXPORT Bisector_FunctionH(const occ::handle<Geom2d_Curve>& C2,
0040                                      const gp_Pnt2d&                  P1,
0041                                      const gp_Vec2d&                  T1);
0042
0043   //! Computes the values of the Functions for the variable <X>.
0044   Standard_EXPORT bool Value(const double X, double& F) override;
0045
0046   Standard_EXPORT bool Derivative(const double X, double& D) override;
0047
0048   //! Returns the values of the functions and the derivatives
0049   //! for the variable <X>.
0050   Standard_EXPORT bool Values(const double X, double& F, double& D) override;
0051
0052 private:
0053   occ::handle<Geom2d_Curve> curve2;
0054   gp_Pnt2d                  p1;
0055   gp_Vec2d                  t1;
0056 };
0057
0058 #endif // _Bisector_FunctionH_HeaderFile