1 // Created on: 1993-04-14
2 // Created by: Isabelle GRIGNON
3 // Copyright (c) 1993-1999 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 _BRepGProp_Face_HeaderFile
18 #define _BRepGProp_Face_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <BRepAdaptor_Surface.hxx>
25 #include <Geom2dAdaptor_Curve.hxx>
26 #include <Standard_Boolean.hxx>
27 #include <Standard_Integer.hxx>
28 #include <gp_Pnt2d.hxx>
29 #include <Standard_Real.hxx>
30 #include <TColStd_Array1OfReal.hxx>
31 #include <GeomAbs_IsoType.hxx>
32 #include <TColStd_HArray1OfReal.hxx>
49 //! Constructor. Initializes the object with a flag IsUseSpan
50 //! that says if it is necessary to define spans on a face.
51 //! This option has an effect only for BSpline faces. Spans
52 //! are returned by the methods GetUKnots and GetTKnots.
53 BRepGProp_Face(const Standard_Boolean IsUseSpan = Standard_False);
55 //! Constructor. Initializes the object with the face and the
56 //! flag IsUseSpan that says if it is necessary to define
57 //! spans on a face. This option has an effect only for
58 //! BSpline faces. Spans are returned by the methods GetUKnots
60 BRepGProp_Face(const TopoDS_Face& F, const Standard_Boolean IsUseSpan = Standard_False);
62 Standard_EXPORT void Load (const TopoDS_Face& F);
64 Standard_EXPORT Standard_Integer VIntegrationOrder() const;
66 //! Returns Standard_True if the face is not trimmed.
67 Standard_Boolean NaturalRestriction() const;
69 //! Returns the TopoDS face.
70 const TopoDS_Face& GetFace() const;
72 //! Returns the value of the boundary curve of the face.
73 gp_Pnt2d Value2d (const Standard_Real U) const;
75 Standard_EXPORT Standard_Integer SIntOrder (const Standard_Real Eps) const;
77 Standard_EXPORT Standard_Integer SVIntSubs() const;
79 Standard_EXPORT Standard_Integer SUIntSubs() const;
81 Standard_EXPORT void UKnots (TColStd_Array1OfReal& Knots) const;
83 Standard_EXPORT void VKnots (TColStd_Array1OfReal& Knots) const;
85 Standard_EXPORT Standard_Integer LIntOrder (const Standard_Real Eps) const;
87 Standard_EXPORT Standard_Integer LIntSubs() const;
89 Standard_EXPORT void LKnots (TColStd_Array1OfReal& Knots) const;
91 //! Returns the number of points required to do the
92 //! integration in the U parametric direction with
94 Standard_EXPORT Standard_Integer UIntegrationOrder() const;
96 //! Returns the parametric bounds of the Face.
97 Standard_EXPORT void Bounds (Standard_Real& U1, Standard_Real& U2, Standard_Real& V1, Standard_Real& V2) const;
99 //! Computes the point of parameter U, V on the Face <S> and
100 //! the normal to the face at this point.
101 Standard_EXPORT void Normal (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& VNor) const;
103 //! Loading the boundary arc.
104 //! Returns FALSE if edge has no P-Curve.
105 Standard_EXPORT bool Load (const TopoDS_Edge& E);
107 //! Returns the parametric value of the start point of
108 //! the current arc of curve.
109 Standard_Real FirstParameter() const;
111 //! Returns the parametric value of the end point of
112 //! the current arc of curve.
113 Standard_Real LastParameter() const;
115 //! Returns the number of points required to do the
116 //! integration along the parameter of curve.
117 Standard_EXPORT Standard_Integer IntegrationOrder() const;
119 //! Returns the point of parameter U and the first derivative
120 //! at this point of a boundary curve.
121 void D12d (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1) const;
123 //! Loading the boundary arc. This arc is either a top, bottom,
124 //! left or right bound of a UV rectangle in which the
125 //! parameters of surface are defined.
126 //! If IsFirstParam is equal to Standard_True, the face is
127 //! initialized by either left of bottom bound. Otherwise it is
128 //! initialized by the top or right one.
129 //! If theIsoType is equal to GeomAbs_IsoU, the face is
130 //! initialized with either left or right bound. Otherwise -
131 //! with either top or bottom one.
132 Standard_EXPORT void Load (const Standard_Boolean IsFirstParam, const GeomAbs_IsoType theIsoType);
134 //! Returns an array of U knots of the face. The first and last
135 //! elements of the array will be theUMin and theUMax. The
136 //! middle elements will be the U Knots of the face greater
137 //! then theUMin and lower then theUMax in increasing order.
138 //! If the face is not a BSpline, the array initialized with
139 //! theUMin and theUMax only.
140 Standard_EXPORT void GetUKnots (const Standard_Real theUMin, const Standard_Real theUMax, Handle(TColStd_HArray1OfReal)& theUKnots) const;
142 //! Returns an array of combination of T knots of the arc and
143 //! V knots of the face. The first and last elements of the
144 //! array will be theTMin and theTMax. The middle elements will
145 //! be the Knots of the arc and the values of parameters of
146 //! arc on which the value points have V coordinates close to V
147 //! knots of face. All the parameter will be greater then
148 //! theTMin and lower then theTMax in increasing order.
149 //! If the face is not a BSpline, the array initialized with
150 //! theTMin and theTMax only.
151 Standard_EXPORT void GetTKnots (const Standard_Real theTMin, const Standard_Real theTMax, Handle(TColStd_HArray1OfReal)& theTKnots) const;
166 BRepAdaptor_Surface mySurface;
167 Geom2dAdaptor_Curve myCurve;
168 Standard_Boolean mySReverse;
169 Standard_Boolean myIsUseSpan;
175 #include <BRepGProp_Face.lxx>
181 #endif // _BRepGProp_Face_HeaderFile