| 68ad329c |
1 | // Created on: 1992-08-28 |
| 2 | // Created by: Remi LEQUETTE |
| 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 _Geom2dEvaluator_HeaderFile |
| 18 | #define _Geom2dEvaluator_HeaderFile |
| 19 | |
| 20 | #include <Standard.hxx> |
| 21 | #include <Standard_DefineAlloc.hxx> |
| 68ad329c |
22 | |
| 23 | class gp_Pnt2d; |
| 24 | class gp_Vec2d; |
| 25 | |
| 26 | //! The Geom2dEvaluator package provides utilities for . |
| 27 | //! calculating value and derivatives of offset curve |
| 28 | //! using corresponding values of base curve |
| 29 | |
| 30 | class Geom2dEvaluator |
| 31 | { |
| 32 | public: |
| 33 | |
| 34 | DEFINE_STANDARD_ALLOC |
| 35 | |
| 36 | |
| 37 | //! Recalculate D1 values of base curve into D0 value of offset curve |
| 38 | Standard_EXPORT static void CalculateD0(gp_Pnt2d& theValue, |
| 39 | const gp_Vec2d& theD1, const Standard_Real theOffset); |
| 40 | |
| 41 | //! Recalculate D2 values of base curve into D1 values of offset curve |
| 42 | Standard_EXPORT static void CalculateD1(gp_Pnt2d& theValue, |
| 43 | gp_Vec2d& theD1, |
| 44 | const gp_Vec2d& theD2, const Standard_Real theOffset); |
| 45 | |
| 46 | |
| 47 | //! Recalculate D3 values of base curve into D2 values of offset curve |
| 48 | Standard_EXPORT static void CalculateD2(gp_Pnt2d& theValue, |
| 49 | gp_Vec2d& theD1, |
| 50 | gp_Vec2d& theD2, |
| 51 | const gp_Vec2d& theD3, const Standard_Boolean theIsDirChange, |
| 52 | const Standard_Real theOffset); |
| 53 | |
| 54 | |
| 55 | //! Recalculate D3 values of base curve into D3 values of offset curve |
| 56 | Standard_EXPORT static void CalculateD3(gp_Pnt2d& theValue, |
| 57 | gp_Vec2d& theD1, |
| 58 | gp_Vec2d& theD2, |
| 59 | gp_Vec2d& theD3, |
| 60 | const gp_Vec2d& theD4, const Standard_Boolean theIsDirChange, |
| 61 | const Standard_Real theOffset); |
| 62 | |
| 63 | |
| 64 | //! Recalculate derivatives in the singular point |
| 65 | //! Returns true if the direction of derivatives is changed |
| 66 | Standard_EXPORT static Standard_Boolean AdjustDerivative(const Standard_Integer theMaxDerivative, |
| 67 | const Standard_Real theU, |
| 68 | gp_Vec2d& theD1, |
| 69 | gp_Vec2d& theD2, |
| 70 | gp_Vec2d& theD3, |
| 71 | gp_Vec2d& theD4); |
| 72 | |
| 73 | |
| 74 | protected: |
| 75 | |
| 76 | |
| 77 | |
| 78 | |
| 79 | |
| 80 | private: |
| 81 | |
| 82 | }; |
| 83 | |
| 84 | |
| 85 | #endif // _Geom2dEvaluator_HeaderFile |
projects / occt.git / blame