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1 | // Created on: 1992-09-28 |
2 | // Created by: Remi GILET |
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 _GCE2d_MakeArcOfCircle_HeaderFile |
18 | #define _GCE2d_MakeArcOfCircle_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <GCE2d_Root.hxx> |
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25 | #include <Geom2d_TrimmedCurve.hxx> |
26 | |
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27 | class gp_Circ2d; |
28 | class gp_Pnt2d; |
29 | class gp_Vec2d; |
30 | |
31 | |
32 | //! Implements construction algorithms for an arc of |
33 | //! circle in the plane. The result is a Geom2d_TrimmedCurve curve. |
34 | //! A MakeArcOfCircle object provides a framework for: |
35 | //! - defining the construction of the arc of circle, |
36 | //! - implementing the construction algorithm, and |
37 | //! - consulting the results. In particular, the Value |
38 | //! function returns the constructed arc of circle. |
39 | class GCE2d_MakeArcOfCircle : public GCE2d_Root |
40 | { |
41 | public: |
42 | |
43 | DEFINE_STANDARD_ALLOC |
44 | |
45 | |
46 | //! Makes an arc of circle (TrimmedCurve from Geom2d) from |
47 | //! a circle between two parameters Alpha1 and Alpha2. |
48 | //! The two parameters are angles. The parameters are |
49 | //! in radians. |
50 | Standard_EXPORT GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ, const Standard_Real Alpha1, const Standard_Real Alpha2, const Standard_Boolean Sense = Standard_True); |
51 | |
52 | //! Makes an arc of circle (TrimmedCurve from Geom2d) from |
53 | //! a circle between point <P> and the parameter |
54 | //! Alpha. Alpha is given in radians. |
55 | Standard_EXPORT GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ, const gp_Pnt2d& P, const Standard_Real Alpha, const Standard_Boolean Sense = Standard_True); |
56 | |
57 | //! Makes an arc of circle (TrimmedCurve from Geom2d) from |
58 | //! a circle between two points P1 and P2. |
59 | Standard_EXPORT GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ, const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Standard_Boolean Sense = Standard_True); |
60 | |
61 | //! Makes an arc of circle (TrimmedCurve from Geom2d) from |
62 | //! three points P1,P2,P3 between two points P1 and P3, |
63 | //! and passing through the point P2. |
64 | Standard_EXPORT GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1, const gp_Pnt2d& P2, const gp_Pnt2d& P3); |
65 | |
66 | //! Makes an arc of circle (TrimmedCurve from Geom2d) from |
67 | //! two points P1,P2 and the tangente to the solution at |
68 | //! the point P1. |
69 | Standard_EXPORT GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1, const gp_Vec2d& V, const gp_Pnt2d& P2); |
70 | |
71 | //! Returns the constructed arc of circle. |
72 | //! Exceptions StdFail_NotDone if no arc of circle is constructed. |
73 | Standard_EXPORT const Handle(Geom2d_TrimmedCurve)& Value() const; |
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74 | |
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75 | operator const Handle(Geom2d_TrimmedCurve)& () const { return Value(); } |
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76 | |
77 | private: |
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78 | Handle(Geom2d_TrimmedCurve) TheArc; |
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79 | }; |
80 | |
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81 | #endif // _GCE2d_MakeArcOfCircle_HeaderFile |