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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 |
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 _IntCurve_ProjectOnPConicTool_HeaderFile |
18 | #define _IntCurve_ProjectOnPConicTool_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Standard_Real.hxx> |
25 | class IntCurve_PConic; |
26 | class gp_Pnt2d; |
27 | |
28 | |
29 | //! This class provides a tool which computes the parameter |
30 | //! of a point near a parametric conic. |
31 | class IntCurve_ProjectOnPConicTool |
32 | { |
33 | public: |
34 | |
35 | DEFINE_STANDARD_ALLOC |
36 | |
37 | |
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 |
47 | //! curve. |
48 | Standard_EXPORT static Standard_Real FindParameter (const IntCurve_PConic& C, const gp_Pnt2d& Pnt, const Standard_Real Tol); |
49 | |
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 |
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58 | //! which the parameter certainly lies. These parameters are |
59 | //! given to implement a more efficient algorithm. So, it is |
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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); |
63 | |
64 | |
65 | |
66 | |
67 | protected: |
68 | |
69 | |
70 | |
71 | |
72 | |
73 | private: |
74 | |
75 | |
76 | |
77 | |
78 | |
79 | }; |
80 | |
81 | |
82 | |
83 | |
84 | |
85 | |
86 | |
87 | #endif // _IntCurve_ProjectOnPConicTool_HeaderFile |