| 42cf5bc1 |
1 | // Created on: 1997-05-28 |
| 2 | // Created by: Xavier BENVENISTE |
| 3 | // Copyright (c) 1997-1999 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 _GeomLib_Check2dBSplineCurve_HeaderFile |
| 18 | #define _GeomLib_Check2dBSplineCurve_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 22 | #include <Standard_Handle.hxx> |
| 23 | |
| 24 | #include <Standard_Boolean.hxx> |
| 25 | #include <Standard_Real.hxx> |
| 26 | #include <gp_Pnt2d.hxx> |
| 27 | class Geom2d_BSplineCurve; |
| 28 | class StdFail_NotDone; |
| 29 | class Standard_OutOfRange; |
| 30 | |
| 31 | |
| 32 | //! Checks for the end tangents : wether or not those |
| 33 | //! are reversed |
| 34 | class GeomLib_Check2dBSplineCurve |
| 35 | { |
| 36 | public: |
| 37 | |
| 38 | DEFINE_STANDARD_ALLOC |
| 39 | |
| 40 | |
| 41 | Standard_EXPORT GeomLib_Check2dBSplineCurve(const Handle(Geom2d_BSplineCurve)& Curve, const Standard_Real Tolerance, const Standard_Real AngularTolerance); |
| 42 | |
| 43 | Standard_Boolean IsDone() const; |
| 44 | |
| 45 | Standard_EXPORT void NeedTangentFix (Standard_Boolean& FirstFlag, Standard_Boolean& SecondFlag) const; |
| 46 | |
| 47 | Standard_EXPORT void FixTangent (const Standard_Boolean FirstFlag, const Standard_Boolean LastFlag); |
| 48 | |
| 49 | //! modifies the curve |
| 50 | //! by fixing the first or the last tangencies |
| 51 | //! |
| 52 | //! if Index3D not in the Range [1,Nb3dSpaces] |
| 53 | //! if the Approx is not Done |
| 54 | Standard_EXPORT Handle(Geom2d_BSplineCurve) FixedTangent (const Standard_Boolean FirstFlag, const Standard_Boolean LastFlag); |
| 55 | |
| 56 | |
| 57 | |
| 58 | |
| 59 | protected: |
| 60 | |
| 61 | |
| 62 | |
| 63 | |
| 64 | |
| 65 | private: |
| 66 | |
| 67 | |
| 68 | |
| 69 | Handle(Geom2d_BSplineCurve) myCurve; |
| 70 | Standard_Boolean myDone; |
| 71 | Standard_Boolean myFixFirstTangent; |
| 72 | Standard_Boolean myFixLastTangent; |
| 73 | Standard_Real myAngularTolerance; |
| 74 | Standard_Real myTolerance; |
| 75 | gp_Pnt2d myFirstPole; |
| 76 | gp_Pnt2d myLastPole; |
| 77 | |
| 78 | |
| 79 | }; |
| 80 | |
| 81 | |
| 82 | #include <GeomLib_Check2dBSplineCurve.lxx> |
| 83 | |
| 84 | |
| 85 | |
| 86 | |
| 87 | |
| 88 | #endif // _GeomLib_Check2dBSplineCurve_HeaderFile |
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