1 // Created on: 1992-10-13
2 // Created by: Laurent BUCHARD
3 // Copyright (c) 1992-1999 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 _IntCurve_ProjectOnPConicTool_HeaderFile
18 #define _IntCurve_ProjectOnPConicTool_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <Standard_Real.hxx>
25 class IntCurve_PConic;
29 //! This class provides a tool which computes the parameter
30 //! of a point near a parametric conic.
31 class IntCurve_ProjectOnPConicTool
38 //! Returns the parameter V of the point on the
39 //! parametric curve corresponding to the Point Pnt. The
40 //! Correspondance between Pnt and the point P(V) on the
41 //! parametric curve must be coherent with the way of
42 //! determination of the signed distance between a point and
43 //! the implicit curve. Tol is the tolerance on the distance
44 //! between a point and the parametrised curve. In that case,
45 //! no bounds are given. The research of the rigth parameter
46 //! has to be made on the natural parametric domain of the
48 Standard_EXPORT static Standard_Real FindParameter (const IntCurve_PConic& C, const gp_Pnt2d& Pnt, const Standard_Real Tol);
50 //! Returns the parameter V of the point on the
51 //! parametric curve corresponding to the Point Pnt. The
52 //! Correspondance between Pnt and the point P(V) on the
53 //! parametric curve must be coherent with the way of
54 //! determination of the signed distance between a point and
55 //! the implicit curve. Tol is the tolerance on the distance
56 //! between a point and the parametrised curve. LowParameter
57 //! and HighParameter give the boundaries of the interval in
58 //! wich the parameter certainly lies. These parameters are
59 //! given to implement a more efficient algoritm. So, it is
60 //! not necessary to check that the returned value verifies
61 //! LowParameter <= Value <= HighParameter.
62 Standard_EXPORT static Standard_Real FindParameter (const IntCurve_PConic& C, const gp_Pnt2d& Pnt, const Standard_Real LowParameter, const Standard_Real HighParameter, const Standard_Real Tol);
87 #endif // _IntCurve_ProjectOnPConicTool_HeaderFile