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>
21 #include <Standard_Type.hxx>
23 #include <Standard_Real.hxx>
24 #include <TColGeom_SequenceOfCurve.hxx>
25 #include <GeomFill_SequenceOfTrsf.hxx>
26 #include <TColStd_SequenceOfReal.hxx>
27 #include <GeomFill_SectionLaw.hxx>
28 #include <Standard_Boolean.hxx>
29 #include <TColgp_Array1OfPnt.hxx>
30 #include <TColStd_Array1OfReal.hxx>
31 #include <TColgp_Array1OfVec.hxx>
32 #include <Standard_Integer.hxx>
33 #include <TColStd_Array1OfInteger.hxx>
34 #include <GeomAbs_Shape.hxx>
35 class Geom_BSplineSurface;
36 class Standard_OutOfRange;
41 class GeomFill_NSections;
42 DEFINE_STANDARD_HANDLE(GeomFill_NSections, GeomFill_SectionLaw)
44 //! Define a Section Law by N Sections
45 class GeomFill_NSections : public GeomFill_SectionLaw
51 //! Make a SectionLaw with N Curves.
52 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC);
54 //! Make a SectionLaw with N Curves and N associated parameters.
55 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const TColStd_SequenceOfReal& NP);
57 //! Make a SectionLaw with N Curves and N associated parameters.
58 //! UF and UL are the parametric bounds of the NSections
59 Standard_EXPORT GeomFill_NSections(const TColGeom_SequenceOfCurve& NC, const TColStd_SequenceOfReal& NP, const Standard_Real UF, const Standard_Real UL);
61 //! Make a SectionLaw with N Curves and N associated parameters.
62 //! UF and UL are the parametric bounds of the NSections
63 //! VF and VL are the parametric bounds of the path
64 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);
66 //! Make a SectionLaw with N Curves and N associated parameters.
67 //! UF and UL are the parametric bounds of the NSections
68 //! VF and VL are the parametric bounds of the path
69 //! UF and UL are the parametric bounds of the NSections
70 //! Surf is a reference surface used by BRepFill_NSections
71 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);
73 //! compute the section for v = param
74 Standard_EXPORT virtual Standard_Boolean D0 (const Standard_Real Param, TColgp_Array1OfPnt& Poles, TColStd_Array1OfReal& Weigths) Standard_OVERRIDE;
76 //! compute the first derivative in v direction of the
77 //! section for v = param
78 //! Warning : It used only for C1 or C2 aproximation
79 Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths) Standard_OVERRIDE;
81 //! compute the second derivative in v direction of the
82 //! section for v = param
83 //! Warning : It used only for C2 aproximation
84 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;
86 //! Sets the reference surface
87 Standard_EXPORT void SetSurface (const Handle(Geom_BSplineSurface)& RefSurf);
89 //! Computes the surface
90 Standard_EXPORT void ComputeSurface();
92 //! give if possible an bspline Surface, like iso-v are the
93 //! section. If it is not possible this methode have to
94 //! get an Null Surface. Is it the default implementation.
95 Standard_EXPORT virtual Handle(Geom_BSplineSurface) BSplineSurface() const Standard_OVERRIDE;
97 //! get the format of an section
98 Standard_EXPORT virtual void SectionShape (Standard_Integer& NbPoles, Standard_Integer& NbKnots, Standard_Integer& Degree) const Standard_OVERRIDE;
100 //! get the Knots of the section
101 Standard_EXPORT virtual void Knots (TColStd_Array1OfReal& TKnots) const Standard_OVERRIDE;
103 //! get the Multplicities of the section
104 Standard_EXPORT virtual void Mults (TColStd_Array1OfInteger& TMults) const Standard_OVERRIDE;
106 //! Returns if the sections are rationnal or not
107 Standard_EXPORT virtual Standard_Boolean IsRational() const Standard_OVERRIDE;
109 //! Returns if the sections are periodic or not
110 Standard_EXPORT virtual Standard_Boolean IsUPeriodic() const Standard_OVERRIDE;
112 //! Returns if the law isperiodic or not
113 Standard_EXPORT virtual Standard_Boolean IsVPeriodic() const Standard_OVERRIDE;
115 //! Returns the number of intervals for continuity
117 //! May be one if Continuity(me) >= <S>
118 Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
120 //! Stores in <T> the parameters bounding the intervals
121 //! of continuity <S>.
123 //! The array must provide enough room to accomodate
124 //! for the parameters. i.e. T.Length() > NbIntervals()
125 Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
127 //! Sets the bounds of the parametric interval on
129 //! This determines the derivatives in these values if the
130 //! function is not Cn.
131 Standard_EXPORT virtual void SetInterval (const Standard_Real First, const Standard_Real Last) Standard_OVERRIDE;
133 //! Gets the bounds of the parametric interval on
135 Standard_EXPORT virtual void GetInterval (Standard_Real& First, Standard_Real& Last) const Standard_OVERRIDE;
137 //! Gets the bounds of the function parametric domain.
138 //! Warning: This domain it is not modified by the
140 Standard_EXPORT virtual void GetDomain (Standard_Real& First, Standard_Real& Last) const Standard_OVERRIDE;
142 //! Returns the tolerances associated at each poles to
143 //! reach in approximation, to satisfy: BoundTol error
144 //! at the Boundary AngleTol tangent error at the
145 //! Boundary (in radian) SurfTol error inside the
147 Standard_EXPORT virtual void GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal& Tol3d) const Standard_OVERRIDE;
149 //! Get the barycentre of Surface.
150 //! An very poor estimation is sufficent.
151 //! This information is usefull to perform well
152 //! conditioned rational approximation.
153 //! Warning: Used only if <me> IsRational
154 Standard_EXPORT virtual gp_Pnt BarycentreOfSurf() const Standard_OVERRIDE;
156 //! Returns the length of the greater section. This
157 //! information is usefull to G1's control.
158 //! Warning: With an little value, approximation can be slower.
159 Standard_EXPORT virtual Standard_Real MaximalSection() const Standard_OVERRIDE;
161 //! Compute the minimal value of weight for each poles
163 //! This information is usefull to control error
164 //! in rational approximation.
165 //! Warning: Used only if <me> IsRational
166 Standard_EXPORT virtual void GetMinimalWeight (TColStd_Array1OfReal& Weigths) const Standard_OVERRIDE;
168 //! return True If the Law isConstant
169 Standard_EXPORT virtual Standard_Boolean IsConstant (Standard_Real& Error) const Standard_OVERRIDE;
171 //! Return the constant Section if <me> IsConstant.
172 Standard_EXPORT virtual Handle(Geom_Curve) ConstantSection() const Standard_OVERRIDE;
174 //! Returns True if all section are circle, with same
175 //! plane,same center and linear radius evolution
176 //! Return False by Default.
177 Standard_EXPORT virtual Standard_Boolean IsConicalLaw (Standard_Real& Error) const Standard_OVERRIDE;
179 //! Return the circle section at parameter <Param>, if
180 //! <me> a IsConicalLaw
181 Standard_EXPORT virtual Handle(Geom_Curve) CirclSection (const Standard_Real Param) const Standard_OVERRIDE;
186 DEFINE_STANDARD_RTTIEXT(GeomFill_NSections,GeomFill_SectionLaw)
196 Standard_Real UFirst;
198 Standard_Real VFirst;
200 TColGeom_SequenceOfCurve mySections;
201 GeomFill_SequenceOfTrsf myTrsfs;
202 TColStd_SequenceOfReal myParams;
203 Handle(Geom_BSplineSurface) mySurface;
204 Handle(Geom_BSplineSurface) myRefSurf;
215 #endif // _GeomFill_NSections_HeaderFile