6b84c3f7 |
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_OffsetSurface_HeaderFile |
16 | #define _GeomEvaluator_OffsetSurface_HeaderFile |
17 | |
18 | #include <GeomEvaluator_Surface.hxx> |
19 | |
20 | #include <Geom_OsculatingSurface.hxx> |
21 | #include <Geom_Surface.hxx> |
22 | |
23 | class GeomAdaptor_HSurface; |
24 | |
25 | //! Allows to calculate values and derivatives for offset surfaces |
26 | class GeomEvaluator_OffsetSurface : public GeomEvaluator_Surface |
27 | { |
28 | public: |
29 | //! Initialize evaluator by surface |
30 | Standard_EXPORT GeomEvaluator_OffsetSurface( |
31 | const Handle(Geom_Surface)& theBase, |
32 | const Standard_Real theOffset, |
33 | const Handle(Geom_OsculatingSurface)& theOscSurf = Handle(Geom_OsculatingSurface)()); |
34 | //! Initialize evaluator by surface adaptor |
35 | Standard_EXPORT GeomEvaluator_OffsetSurface( |
36 | const Handle(GeomAdaptor_HSurface)& theBase, |
37 | const Standard_Real theOffset, |
38 | const Handle(Geom_OsculatingSurface)& theOscSurf = Handle(Geom_OsculatingSurface)()); |
39 | |
40 | //! Change the offset value |
41 | void SetOffsetValue(Standard_Real theOffset) |
42 | { myOffset = theOffset; } |
43 | |
44 | //! Value of surface |
45 | Standard_EXPORT void D0(const Standard_Real theU, const Standard_Real theV, |
46 | gp_Pnt& theValue) const Standard_OVERRIDE; |
47 | //! Value and first derivatives of surface |
48 | Standard_EXPORT void D1(const Standard_Real theU, const Standard_Real theV, |
49 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const Standard_OVERRIDE; |
50 | //! Value, first and second derivatives of surface |
51 | Standard_EXPORT void D2(const Standard_Real theU, const Standard_Real theV, |
52 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
53 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const Standard_OVERRIDE; |
54 | //! Value, first, second and third derivatives of surface |
55 | Standard_EXPORT void D3(const Standard_Real theU, const Standard_Real theV, |
56 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
57 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, |
58 | gp_Vec& theD3U, gp_Vec& theD3V, |
59 | gp_Vec& theD3UUV, gp_Vec& theD3UVV) const Standard_OVERRIDE; |
60 | //! Calculates N-th derivatives of surface, where N = theDerU + theDerV. |
61 | //! |
62 | //! Raises if N < 1 or theDerU < 0 or theDerV < 0 |
63 | Standard_EXPORT gp_Vec DN(const Standard_Real theU, |
64 | const Standard_Real theV, |
65 | const Standard_Integer theDerU, |
66 | const Standard_Integer theDerV) const Standard_OVERRIDE; |
67 | |
92efcf78 |
68 | DEFINE_STANDARD_RTTIEXT(GeomEvaluator_OffsetSurface,GeomEvaluator_Surface) |
6b84c3f7 |
69 | |
70 | private: |
71 | //! Returns bounds of a base surface |
72 | void Bounds(Standard_Real& theUMin, Standard_Real& theUMax, |
73 | Standard_Real& theVMin, Standard_Real& theVMax) const; |
74 | |
75 | //! Recalculate D1 values of base surface into D0 value of offset surface |
76 | void CalculateD0(const Standard_Real theU, const Standard_Real theV, |
77 | gp_Pnt& theValue, |
78 | const gp_Vec& theD1U, const gp_Vec& theD1V) const; |
79 | //! Recalculate D2 values of base surface into D1 values of offset surface |
80 | void CalculateD1(const Standard_Real theU, const Standard_Real theV, |
81 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
82 | const gp_Vec& theD2U, const gp_Vec& theD2V, const gp_Vec& theD2UV) const; |
83 | //! Recalculate D3 values of base surface into D2 values of offset surface |
84 | void CalculateD2(const Standard_Real theU, const Standard_Real theV, |
85 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
86 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, |
87 | const gp_Vec& theD3U, const gp_Vec& theD3V, |
88 | const gp_Vec& theD3UUV, const gp_Vec& theD3UVV) const; |
89 | //! Recalculate D3 values of base surface into D3 values of offset surface |
90 | void CalculateD3(const Standard_Real theU, const Standard_Real theV, |
91 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
92 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, |
93 | gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const; |
94 | //! Calculate DN of offset surface based on derivatives of base surface |
95 | gp_Vec CalculateDN(const Standard_Real theU, const Standard_Real theV, |
96 | const Standard_Integer theNu, const Standard_Integer theNv, |
97 | const gp_Vec& theD1U, const gp_Vec& theD1V) const; |
98 | |
99 | //! Calculate value of base surface/adaptor |
100 | void BaseD0(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue) const; |
101 | //! Calculate value and first derivatives of base surface/adaptor |
102 | void BaseD1(const Standard_Real theU, const Standard_Real theV, |
103 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const; |
104 | //! Calculate value, first and second derivatives of base surface/adaptor |
105 | void BaseD2(const Standard_Real theU, const Standard_Real theV, |
106 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
107 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const; |
108 | //! Calculate value, first, second and third derivatives of base surface/adaptor |
109 | void BaseD3(const Standard_Real theU, const Standard_Real theV, |
110 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
111 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, |
112 | gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const; |
113 | |
114 | //! Replace zero derivative by the corresponding derivative in a near point. |
115 | //! Return true, if the derivative was replaced. |
116 | Standard_Boolean ReplaceDerivative(const Standard_Real theU, const Standard_Real theV, |
117 | gp_Vec& theDU, gp_Vec& theDV, |
118 | const Standard_Real theSquareTol) const; |
119 | |
120 | private: |
121 | Handle(Geom_Surface) myBaseSurf; |
122 | Handle(GeomAdaptor_HSurface) myBaseAdaptor; |
123 | |
124 | Standard_Real myOffset; ///< offset value |
125 | Handle(Geom_OsculatingSurface) myOscSurf; ///< auxiliary osculating surface |
126 | }; |
127 | |
128 | DEFINE_STANDARD_HANDLE(GeomEvaluator_OffsetSurface, GeomEvaluator_Surface) |
129 | |
130 | |
131 | #endif // _GeomEvaluator_OffsetSurface_HeaderFile |