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>
23 class IntCurve_PConic;
27 //! This class provides a tool which computes the parameter
28 //! of a point near a parametric conic.
29 class IntCurve_ProjectOnPConicTool
36 //! Returns the parameter V of the point on the
37 //! parametric curve corresponding to the Point Pnt. The
38 //! Correspondence between Pnt and the point P(V) on the
39 //! parametric curve must be coherent with the way of
40 //! determination of the signed distance between a point and
41 //! the implicit curve. Tol is the tolerance on the distance
42 //! between a point and the parametrised curve. In that case,
43 //! no bounds are given. The research of the right parameter
44 //! has to be made on the natural parametric domain of the
46 Standard_EXPORT static Standard_Real FindParameter (const IntCurve_PConic& C, const gp_Pnt2d& Pnt, const Standard_Real Tol);
48 //! Returns the parameter V of the point on the
49 //! parametric curve corresponding to the Point Pnt. The
50 //! Correspondence between Pnt and the point P(V) on the
51 //! parametric curve must be coherent with the way of
52 //! determination of the signed distance between a point and
53 //! the implicit curve. Tol is the tolerance on the distance
54 //! between a point and the parametrised curve. LowParameter
55 //! and HighParameter give the boundaries of the interval in
56 //! which the parameter certainly lies. These parameters are
57 //! given to implement a more efficient algorithm. So, it is
58 //! not necessary to check that the returned value verifies
59 //! LowParameter <= Value <= HighParameter.
60 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);
85 #endif // _IntCurve_ProjectOnPConicTool_HeaderFile