1 // Created on: 1998-12-14
2 // Created by: Joelle CHAUVET
3 // Copyright (c) 1998-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _GeomFill_NSections_HeaderFile
18 #define _GeomFill_NSections_HeaderFile
20 #include <Standard.hxx>
22 #include <Standard_Real.hxx>
23 #include <TColGeom_SequenceOfCurve.hxx>
24 #include <GeomFill_SequenceOfTrsf.hxx>
25 #include <TColStd_SequenceOfReal.hxx>
26 #include <GeomFill_SectionLaw.hxx>
27 #include <TColgp_Array1OfPnt.hxx>
28 #include <TColStd_Array1OfReal.hxx>
29 #include <TColgp_Array1OfVec.hxx>
30 #include <Standard_Integer.hxx>
31 #include <TColStd_Array1OfInteger.hxx>
32 #include <GeomAbs_Shape.hxx>
33 class Geom_BSplineSurface;
38 class GeomFill_NSections;
39 DEFINE_STANDARD_HANDLE(GeomFill_NSections, GeomFill_SectionLaw)
41 //! Define a Section Law by N Sections
42 class GeomFill_NSections : public GeomFill_SectionLaw
48 //! Make a SectionLaw with N Curves.
49 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC);
51 //! Make a SectionLaw with N Curves and N associated parameters.
52 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const TColStd_SequenceOfReal& NP);
54 //! Make a SectionLaw with N Curves and N associated parameters.
55 //! UF and UL are the parametric bounds of the NSections
56 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const TColStd_SequenceOfReal& NP, const Standard_Real UF, const Standard_Real UL);
58 //! Make a SectionLaw with N Curves and N associated parameters.
59 //! UF and UL are the parametric bounds of the NSections
60 //! VF and VL are the parametric bounds of the path
61 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const TColStd_SequenceOfReal& NP, const Standard_Real UF, const Standard_Real UL, const Standard_Real VF, const Standard_Real VL);
63 //! Make a SectionLaw with N Curves and N associated parameters.
64 //! UF and UL are the parametric bounds of the NSections
65 //! VF and VL are the parametric bounds of the path
66 //! UF and UL are the parametric bounds of the NSections
67 //! Surf is a reference surface used by BRepFill_NSections
68 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const GeomFill_SequenceOfTrsf& Trsfs, const TColStd_SequenceOfReal& NP, const Standard_Real UF, const Standard_Real UL, const Standard_Real VF, const Standard_Real VL, const Handle(Geom_BSplineSurface)& Surf);
70 //! compute the section for v = param
71 Standard_EXPORT virtual Standard_Boolean D0 (const Standard_Real Param, TColgp_Array1OfPnt& Poles, TColStd_Array1OfReal& Weigths) Standard_OVERRIDE;
73 //! compute the first derivative in v direction of the
74 //! section for v = param
75 //! Warning : It used only for C1 or C2 approximation
76 Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths) Standard_OVERRIDE;
78 //! compute the second derivative in v direction of the
79 //! section for v = param
80 //! Warning : It used only for C2 approximation
81 Standard_EXPORT virtual Standard_Boolean D2 (const Standard_Real Param, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfVec& D2Poles, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths, TColStd_Array1OfReal& D2Weigths) Standard_OVERRIDE;
83 //! Sets the reference surface
84 Standard_EXPORT void SetSurface (const Handle(Geom_BSplineSurface)& RefSurf);
86 //! Computes the surface
87 Standard_EXPORT void ComputeSurface();
89 //! give if possible an bspline Surface, like iso-v are the
90 //! section. If it is not possible this methode have to
91 //! get an Null Surface. Is it the default implementation.
92 Standard_EXPORT virtual Handle(Geom_BSplineSurface) BSplineSurface() const Standard_OVERRIDE;
94 //! get the format of an section
95 Standard_EXPORT virtual void SectionShape (Standard_Integer& NbPoles, Standard_Integer& NbKnots, Standard_Integer& Degree) const Standard_OVERRIDE;
97 //! get the Knots of the section
98 Standard_EXPORT virtual void Knots (TColStd_Array1OfReal& TKnots) const Standard_OVERRIDE;
100 //! get the Multplicities of the section
101 Standard_EXPORT virtual void Mults (TColStd_Array1OfInteger& TMults) const Standard_OVERRIDE;
103 //! Returns if the sections are rationnal or not
104 Standard_EXPORT virtual Standard_Boolean IsRational() const Standard_OVERRIDE;
106 //! Returns if the sections are periodic or not
107 Standard_EXPORT virtual Standard_Boolean IsUPeriodic() const Standard_OVERRIDE;
109 //! Returns if the law isperiodic or not
110 Standard_EXPORT virtual Standard_Boolean IsVPeriodic() const Standard_OVERRIDE;
112 //! Returns the number of intervals for continuity
114 //! May be one if Continuity(me) >= <S>
115 Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
117 //! Stores in <T> the parameters bounding the intervals
118 //! of continuity <S>.
120 //! The array must provide enough room to accommodate
121 //! for the parameters. i.e. T.Length() > NbIntervals()
122 Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
124 //! Sets the bounds of the parametric interval on
126 //! This determines the derivatives in these values if the
127 //! function is not Cn.
128 Standard_EXPORT virtual void SetInterval (const Standard_Real First, const Standard_Real Last) Standard_OVERRIDE;
130 //! Gets the bounds of the parametric interval on
132 Standard_EXPORT virtual void GetInterval (Standard_Real& First, Standard_Real& Last) const Standard_OVERRIDE;
134 //! Gets the bounds of the function parametric domain.
135 //! Warning: This domain it is not modified by the
137 Standard_EXPORT virtual void GetDomain (Standard_Real& First, Standard_Real& Last) const Standard_OVERRIDE;
139 //! Returns the tolerances associated at each poles to
140 //! reach in approximation, to satisfy: BoundTol error
141 //! at the Boundary AngleTol tangent error at the
142 //! Boundary (in radian) SurfTol error inside the
144 Standard_EXPORT virtual void GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal& Tol3d) const Standard_OVERRIDE;
146 //! Get the barycentre of Surface.
147 //! An very poor estimation is sufficient.
148 //! This information is useful to perform well
149 //! conditioned rational approximation.
150 //! Warning: Used only if <me> IsRational
151 Standard_EXPORT virtual gp_Pnt BarycentreOfSurf() const Standard_OVERRIDE;
153 //! Returns the length of the greater section. This
154 //! information is useful to G1's control.
155 //! Warning: With an little value, approximation can be slower.
156 Standard_EXPORT virtual Standard_Real MaximalSection() const Standard_OVERRIDE;
158 //! Compute the minimal value of weight for each poles
160 //! This information is useful to control error
161 //! in rational approximation.
162 //! Warning: Used only if <me> IsRational
163 Standard_EXPORT virtual void GetMinimalWeight (TColStd_Array1OfReal& Weigths) const Standard_OVERRIDE;
165 //! return True If the Law isConstant
166 Standard_EXPORT virtual Standard_Boolean IsConstant (Standard_Real& Error) const Standard_OVERRIDE;
168 //! Return the constant Section if <me> IsConstant.
169 Standard_EXPORT virtual Handle(Geom_Curve) ConstantSection() const Standard_OVERRIDE;
171 //! Returns True if all section are circle, with same
172 //! plane,same center and linear radius evolution
173 //! Return False by Default.
174 Standard_EXPORT virtual Standard_Boolean IsConicalLaw (Standard_Real& Error) const Standard_OVERRIDE;
176 //! Return the circle section at parameter <Param>, if
177 //! <me> a IsConicalLaw
178 Standard_EXPORT virtual Handle(Geom_Curve) CirclSection (const Standard_Real Param) const Standard_OVERRIDE;
183 DEFINE_STANDARD_RTTIEXT(GeomFill_NSections,GeomFill_SectionLaw)
193 Standard_Real UFirst;
195 Standard_Real VFirst;
197 TColGeom_SequenceOfCurve mySections;
198 GeomFill_SequenceOfTrsf myTrsfs;
199 TColStd_SequenceOfReal myParams;
200 Handle(Geom_BSplineSurface) mySurface;
201 Handle(Geom_BSplineSurface) myRefSurf;
212 #endif // _GeomFill_NSections_HeaderFile