| d660a72a |
1 | // Created on: 2015-09-21 |
| 2 | // Copyright (c) 2015 OPEN CASCADE SAS |
| 3 | // |
| 4 | // This file is part of Open CASCADE Technology software library. |
| 5 | // |
| 6 | // This library is free software; you can redistribute it and/or modify it under |
| 7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 8 | // by the Free Software Foundation, with special exception defined in the file |
| 9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 10 | // distribution for complete text of the license and disclaimer of any warranty. |
| 11 | // |
| 12 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 13 | // commercial license or contractual agreement. |
| 14 | |
| 15 | #ifndef _GeomEvaluator_OffsetCurve_HeaderFile |
| 16 | #define _GeomEvaluator_OffsetCurve_HeaderFile |
| 17 | |
| 18 | #include <Geom_Curve.hxx> |
| 19 | #include <GeomEvaluator_Curve.hxx> |
| 20 | #include <gp_Dir.hxx> |
| 21 | |
| 22 | class GeomAdaptor_HCurve; |
| 23 | |
| 24 | //! Allows to calculate values and derivatives for offset curves in 3D |
| 25 | class GeomEvaluator_OffsetCurve : public GeomEvaluator_Curve |
| 26 | { |
| 27 | public: |
| 28 | //! Initialize evaluator by curve |
| 29 | Standard_EXPORT GeomEvaluator_OffsetCurve( |
| 30 | const Handle(Geom_Curve)& theBase, |
| 31 | const Standard_Real theOffset, |
| 32 | const gp_Dir& theDirection); |
| 33 | //! Initialize evaluator by curve adaptor |
| 34 | Standard_EXPORT GeomEvaluator_OffsetCurve( |
| 35 | const Handle(GeomAdaptor_HCurve)& theBase, |
| 36 | const Standard_Real theOffset, |
| 37 | const gp_Dir& theDirection); |
| 38 | |
| 39 | //! Change the offset value |
| 40 | void SetOffsetValue(Standard_Real theOffset) |
| 41 | { myOffset = theOffset; } |
| 42 | |
| 43 | void SetOffsetDirection(const gp_Dir& theDirection) |
| 44 | { myOffsetDir = theDirection; } |
| 45 | |
| 46 | //! Value of curve |
| 47 | Standard_EXPORT void D0(const Standard_Real theU, |
| 48 | gp_Pnt& theValue) const Standard_OVERRIDE; |
| 49 | //! Value and first derivatives of curve |
| 50 | Standard_EXPORT void D1(const Standard_Real theU, |
| 51 | gp_Pnt& theValue, gp_Vec& theD1) const Standard_OVERRIDE; |
| 52 | //! Value, first and second derivatives of curve |
| 53 | Standard_EXPORT void D2(const Standard_Real theU, |
| 54 | gp_Pnt& theValue, gp_Vec& theD1, gp_Vec& theD2) const Standard_OVERRIDE; |
| 55 | //! Value, first, second and third derivatives of curve |
| 56 | Standard_EXPORT void D3(const Standard_Real theU, |
| 57 | gp_Pnt& theValue, gp_Vec& theD1, |
| 58 | gp_Vec& theD2, gp_Vec& theD3) const Standard_OVERRIDE; |
| 59 | //! Calculates N-th derivatives of curve, where N = theDeriv. Raises if N < 1 |
| 60 | Standard_EXPORT gp_Vec DN(const Standard_Real theU, |
| 61 | const Standard_Integer theDeriv) const Standard_OVERRIDE; |
| 62 | |
| 92efcf78 |
63 | DEFINE_STANDARD_RTTIEXT(GeomEvaluator_OffsetCurve,GeomEvaluator_Curve) |
| d660a72a |
64 | |
| 65 | private: |
| 66 | //! Recalculate D1 values of base curve into D0 value of offset curve |
| 67 | void CalculateD0( gp_Pnt& theValue, |
| 68 | const gp_Vec& theD1) const; |
| 69 | //! Recalculate D2 values of base curve into D1 values of offset curve |
| 70 | void CalculateD1( gp_Pnt& theValue, |
| 71 | gp_Vec& theD1, |
| 72 | const gp_Vec& theD2) const; |
| 73 | //! Recalculate D3 values of base curve into D2 values of offset curve |
| 74 | void CalculateD2( gp_Pnt& theValue, |
| 75 | gp_Vec& theD1, |
| 76 | gp_Vec& theD2, |
| 77 | const gp_Vec& theD3, |
| 78 | const Standard_Boolean theIsDirChange) const; |
| 79 | //! Recalculate D3 values of base curve into D3 values of offset curve |
| 80 | void CalculateD3( gp_Pnt& theValue, |
| 81 | gp_Vec& theD1, |
| 82 | gp_Vec& theD2, |
| 83 | gp_Vec& theD3, |
| 84 | const gp_Vec& theD4, |
| 85 | const Standard_Boolean theIsDirChange) const; |
| 86 | |
| 87 | //! Calculate value of base curve/adaptor |
| 88 | void BaseD0(const Standard_Real theU, gp_Pnt& theValue) const; |
| 89 | //! Calculate value and first derivatives of base curve/adaptor |
| 90 | void BaseD1(const Standard_Real theU, |
| 91 | gp_Pnt& theValue, gp_Vec& theD1) const; |
| 92 | //! Calculate value, first and second derivatives of base curve/adaptor |
| 93 | void BaseD2(const Standard_Real theU, |
| 94 | gp_Pnt& theValue, gp_Vec& theD1, gp_Vec& theD2) const; |
| 95 | //! Calculate value, first, second and third derivatives of base curve/adaptor |
| 96 | void BaseD3(const Standard_Real theU, |
| 97 | gp_Pnt& theValue, gp_Vec& theD1, gp_Vec& theD2, gp_Vec& theD3) const; |
| 98 | //! Calculate value and derivatives till 4th of base curve/adaptor |
| 99 | void BaseD4(const Standard_Real theU, |
| 100 | gp_Pnt& theValue, gp_Vec& theD1, gp_Vec& theD2, gp_Vec& theD3, gp_Vec& theD4) const; |
| 101 | //! Calculate N-th derivative of base curve/adaptor |
| 102 | gp_Vec BaseDN(const Standard_Real theU, const Standard_Integer theDeriv) const; |
| 103 | |
| 104 | // Recalculate derivatives in the singular point |
| 105 | // Returns true if the direction of derivatives is changed |
| 106 | Standard_Boolean AdjustDerivative(const Standard_Integer theMaxDerivative, |
| 107 | const Standard_Real theU, |
| 108 | gp_Vec& theD1, |
| 109 | gp_Vec& theD2, |
| 110 | gp_Vec& theD3, |
| 111 | gp_Vec& theD4) const; |
| 112 | |
| 113 | private: |
| 114 | Handle(Geom_Curve) myBaseCurve; |
| 115 | Handle(GeomAdaptor_HCurve) myBaseAdaptor; |
| 116 | |
| 117 | Standard_Real myOffset; ///< offset value |
| 118 | gp_Dir myOffsetDir; ///< offset direction |
| 119 | }; |
| 120 | |
| 121 | DEFINE_STANDARD_HANDLE(GeomEvaluator_OffsetCurve, GeomEvaluator_Curve) |
| 122 | |
| 123 | |
| 124 | #endif // _GeomEvaluator_OffsetCurve_HeaderFile |
projects / occt.git / blame