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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_MakeArcOfParabola_HeaderFile |
| 18 | #define _GCE2d_MakeArcOfParabola_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 StdFail_NotDone; |
| 28 | class gp_Parab2d; |
| 29 | class gp_Pnt2d; |
| 30 | |
| 31 | |
| 32 | //! Implements construction algorithms for an arc of |
| 33 | //! parabola in the plane. The result is a Geom2d_TrimmedCurve curve. |
| 34 | //! A MakeArcOfParabola object provides a framework for: |
| 35 | //! - defining the construction of the arc of parabola, |
| 36 | //! - implementing the construction algorithm, and |
| 37 | //! - consulting the results. In particular, the Value |
| 38 | //! function returns the constructed arc of parabola. |
| 39 | class GCE2d_MakeArcOfParabola : public GCE2d_Root |
| 40 | { |
| 41 | public: |
| 42 | |
| 43 | DEFINE_STANDARD_ALLOC |
| 44 | |
| 45 | |
| 46 | //! Make an arc of Parabola (TrimmedCurve from Geom2d) from |
| 47 | //! a Parabola between two parameters Alpha1 and Alpha2. |
| 48 | Standard_EXPORT GCE2d_MakeArcOfParabola(const gp_Parab2d& Parab, const Standard_Real Alpha1, const Standard_Real Alpha2, const Standard_Boolean Sense = Standard_True); |
| 49 | |
| 50 | //! Make an arc of Parabola (TrimmedCurve from Geom2d) from |
| 51 | //! a Parabola between point <P> and the parameter |
| 52 | //! Alpha. |
| 53 | Standard_EXPORT GCE2d_MakeArcOfParabola(const gp_Parab2d& Parab, const gp_Pnt2d& P, const Standard_Real Alpha, const Standard_Boolean Sense = Standard_True); |
| 54 | |
| 55 | //! Make an arc of Parabola (TrimmedCurve from Geom2d) from |
| 56 | //! a Parabola between two points P1 and P2. |
| 57 | //! Please, note: the orientation of the arc of parabola is: |
| 58 | //! - the trigonometric sense if Sense is not defined |
| 59 | //! or is true (default value), or |
| 60 | //! - the opposite sense if Sense is false. |
| 61 | //! - IsDone always returns true. |
| 62 | Standard_EXPORT GCE2d_MakeArcOfParabola(const gp_Parab2d& Parab, const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Standard_Boolean Sense = Standard_True); |
| 63 | |
| 64 | //! Returns the constructed arc of parabola. |
| 65 | Standard_EXPORT const Handle(Geom2d_TrimmedCurve)& Value() const; |
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66 | |
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67 | operator const Handle(Geom2d_TrimmedCurve)& () const { return Value(); } |
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68 | |
| 69 | private: |
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70 | Handle(Geom2d_TrimmedCurve) TheArc; |
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71 | }; |
| 72 | |
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73 | #endif // _GCE2d_MakeArcOfParabola_HeaderFile |
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