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1 | // Created on: 1997-07-11 |
2 | // Created by: Philippe MANGIN |
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 _GeomFill_CircularBlendFunc_HeaderFile |
18 | #define _GeomFill_CircularBlendFunc_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_Type.hxx> |
22 | |
23 | #include <gp_Pnt.hxx> |
24 | #include <Standard_Real.hxx> |
25 | #include <Standard_Integer.hxx> |
26 | #include <Convert_ParameterisationType.hxx> |
27 | #include <Standard_Boolean.hxx> |
28 | #include <Approx_SweepFunction.hxx> |
29 | #include <TColgp_Array1OfPnt.hxx> |
30 | #include <TColgp_Array1OfPnt2d.hxx> |
31 | #include <TColStd_Array1OfReal.hxx> |
32 | #include <TColgp_Array1OfVec.hxx> |
33 | #include <TColgp_Array1OfVec2d.hxx> |
34 | #include <TColStd_Array1OfInteger.hxx> |
35 | #include <GeomAbs_Shape.hxx> |
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36 | |
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37 | class Standard_OutOfRange; |
38 | class gp_Pnt; |
39 | |
40 | |
41 | class GeomFill_CircularBlendFunc; |
42 | DEFINE_STANDARD_HANDLE(GeomFill_CircularBlendFunc, Approx_SweepFunction) |
43 | |
44 | //! Circular Blend Function to approximate by |
45 | //! SweepApproximation from Approx |
46 | class GeomFill_CircularBlendFunc : public Approx_SweepFunction |
47 | { |
48 | |
49 | public: |
50 | |
51 | |
52 | //! Create a Blend with a constant radius with 2 |
53 | //! guide-line. <FShape> sets the type of fillet |
54 | //! surface. The -- default value is Convert_TgtThetaOver2 (classical -- |
55 | //! nurbs -- representation of circles). |
56 | //! ChFi3d_QuasiAngular -- corresponds to a nurbs |
57 | //! representation of circles -- which |
58 | //! parameterisation matches the circle one. -- |
59 | //! ChFi3d_Polynomial corresponds to a polynomial -- |
60 | //! representation of circles. |
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61 | Standard_EXPORT GeomFill_CircularBlendFunc(const Handle(Adaptor3d_Curve)& Path, const Handle(Adaptor3d_Curve)& Curve1, const Handle(Adaptor3d_Curve)& Curve2, const Standard_Real Radius, const Standard_Boolean Polynomial = Standard_False); |
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62 | |
63 | //! compute the section for v = param |
64 | Standard_EXPORT virtual Standard_Boolean D0 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfPnt2d& Poles2d, TColStd_Array1OfReal& Weigths) Standard_OVERRIDE; |
65 | |
66 | //! compute the first derivative in v direction of the |
67 | //! section for v = param |
68 | Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths) Standard_OVERRIDE; |
69 | |
70 | //! compute the second derivative in v direction of the |
71 | //! section for v = param |
72 | Standard_EXPORT virtual Standard_Boolean D2 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfVec& D2Poles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColgp_Array1OfVec2d& D2Poles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths, TColStd_Array1OfReal& D2Weigths) Standard_OVERRIDE; |
73 | |
74 | //! get the number of 2d curves to approximate. |
75 | Standard_EXPORT virtual Standard_Integer Nb2dCurves() const Standard_OVERRIDE; |
76 | |
77 | //! get the format of an section |
78 | Standard_EXPORT virtual void SectionShape (Standard_Integer& NbPoles, Standard_Integer& NbKnots, Standard_Integer& Degree) const Standard_OVERRIDE; |
79 | |
80 | //! get the Knots of the section |
81 | Standard_EXPORT virtual void Knots (TColStd_Array1OfReal& TKnots) const Standard_OVERRIDE; |
82 | |
83 | //! get the Multplicities of the section |
84 | Standard_EXPORT virtual void Mults (TColStd_Array1OfInteger& TMults) const Standard_OVERRIDE; |
85 | |
86 | //! Returns if the section is rationnal or not |
87 | Standard_EXPORT virtual Standard_Boolean IsRational() const Standard_OVERRIDE; |
88 | |
89 | //! Returns the number of intervals for continuity |
90 | //! <S>. May be one if Continuity(me) >= <S> |
91 | Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE; |
92 | |
93 | //! Stores in <T> the parameters bounding the intervals |
94 | //! of continuity <S>. |
95 | //! |
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96 | //! The array must provide enough room to accommodate |
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97 | //! for the parameters. i.e. T.Length() > NbIntervals() |
98 | Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE; |
99 | |
100 | //! Sets the bounds of the parametric interval on |
101 | //! the fonction |
102 | //! This determines the derivatives in these values if the |
103 | //! function is not Cn. |
104 | Standard_EXPORT virtual void SetInterval (const Standard_Real First, const Standard_Real Last) Standard_OVERRIDE; |
105 | |
106 | //! Returns the tolerance to reach in approximation |
107 | //! to respecte |
108 | //! BoundTol error at the Boundary |
109 | //! AngleTol tangent error at the Boundary (in radian) |
110 | //! SurfTol error inside the surface. |
111 | Standard_EXPORT virtual void GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal& Tol3d) const Standard_OVERRIDE; |
112 | |
113 | //! Is usfull, if (me) have to be run numerical |
114 | //! algorithme to perform D0, D1 or D2 |
115 | Standard_EXPORT virtual void SetTolerance (const Standard_Real Tol3d, const Standard_Real Tol2d) Standard_OVERRIDE; |
116 | |
117 | //! Get the barycentre of Surface. An very poor |
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118 | //! estimation is sufficient. This information is useful |
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119 | //! to perform well conditioned rational approximation. |
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120 | Standard_EXPORT virtual gp_Pnt BarycentreOfSurf() const Standard_OVERRIDE; |
121 | |
122 | //! Returns the length of the maximum section. This |
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123 | //! information is useful to perform well conditioned rational |
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124 | //! approximation. |
125 | Standard_EXPORT virtual Standard_Real MaximalSection() const Standard_OVERRIDE; |
126 | |
127 | //! Compute the minimal value of weight for each poles |
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128 | //! of all sections. This information is useful to |
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129 | //! perform well conditioned rational approximation. |
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130 | Standard_EXPORT virtual void GetMinimalWeight (TColStd_Array1OfReal& Weigths) const Standard_OVERRIDE; |
131 | |
132 | |
133 | |
134 | |
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135 | DEFINE_STANDARD_RTTIEXT(GeomFill_CircularBlendFunc,Approx_SweepFunction) |
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136 | |
137 | protected: |
138 | |
139 | |
140 | |
141 | |
142 | private: |
143 | |
144 | |
145 | Standard_EXPORT void Discret(); |
146 | |
147 | gp_Pnt myBary; |
148 | Standard_Real myRadius; |
149 | Standard_Real maxang; |
150 | Standard_Real minang; |
151 | Standard_Real distmin; |
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152 | Handle(Adaptor3d_Curve) myPath; |
153 | Handle(Adaptor3d_Curve) myCurve1; |
154 | Handle(Adaptor3d_Curve) myCurve2; |
155 | Handle(Adaptor3d_Curve) myTPath; |
156 | Handle(Adaptor3d_Curve) myTCurve1; |
157 | Handle(Adaptor3d_Curve) myTCurve2; |
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158 | Standard_Integer myDegree; |
159 | Standard_Integer myNbKnots; |
160 | Standard_Integer myNbPoles; |
161 | Convert_ParameterisationType myTConv; |
162 | Standard_Boolean myreverse; |
163 | |
164 | |
165 | }; |
166 | |
167 | |
168 | |
169 | |
170 | |
171 | |
172 | |
173 | #endif // _GeomFill_CircularBlendFunc_HeaderFile |