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42cf5bc1 | 1 | // Created on: 1993-03-31 |
2 | // Created by: Bruno DUMORTIER | |
3 | // Copyright (c) 1993-1999 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 _Adaptor3d_Curve_HeaderFile | |
18 | #define _Adaptor3d_Curve_HeaderFile | |
19 | ||
c22b52d6 | 20 | #include <gp_Lin.hxx> |
21 | #include <gp_Circ.hxx> | |
22 | #include <gp_Elips.hxx> | |
23 | #include <gp_Hypr.hxx> | |
24 | #include <gp_Parab.hxx> | |
25 | #include <GeomAbs_Shape.hxx> | |
42cf5bc1 | 26 | #include <Standard.hxx> |
27 | #include <Standard_DefineAlloc.hxx> | |
28 | #include <Standard_Handle.hxx> | |
42cf5bc1 | 29 | #include <TColStd_Array1OfReal.hxx> |
42cf5bc1 | 30 | #include <GeomAbs_CurveType.hxx> |
c22b52d6 | 31 | |
42cf5bc1 | 32 | class Standard_OutOfRange; |
33 | class Standard_NoSuchObject; | |
34 | class Standard_DomainError; | |
42cf5bc1 | 35 | class gp_Pnt; |
36 | class gp_Vec; | |
42cf5bc1 | 37 | class Geom_BezierCurve; |
38 | class Geom_BSplineCurve; | |
f4dee9bb | 39 | class Geom_OffsetCurve; |
42cf5bc1 | 40 | |
c22b52d6 | 41 | DEFINE_STANDARD_HANDLE(Adaptor3d_Curve, Standard_Transient) |
42cf5bc1 | 42 | |
43 | //! Root class for 3D curves on which geometric | |
44 | //! algorithms work. | |
45 | //! An adapted curve is an interface between the | |
46 | //! services provided by a curve and those required of | |
47 | //! the curve by algorithms which use it. | |
48 | //! Two derived concrete classes are provided: | |
49 | //! - GeomAdaptor_Curve for a curve from the Geom package | |
50 | //! - Adaptor3d_CurveOnSurface for a curve lying on | |
51 | //! a surface from the Geom package. | |
34e4e9f2 BB |
52 | //! |
53 | //! Polynomial coefficients of BSpline curves used for their evaluation are | |
54 | //! cached for better performance. Therefore these evaluations are not | |
55 | //! thread-safe and parallel evaluations need to be prevented. | |
c22b52d6 | 56 | class Adaptor3d_Curve : public Standard_Transient |
42cf5bc1 | 57 | { |
c22b52d6 | 58 | DEFINE_STANDARD_RTTIEXT(Adaptor3d_Curve, Standard_Transient) |
42cf5bc1 | 59 | public: |
60 | ||
42cf5bc1 | 61 | Standard_EXPORT virtual Standard_Real FirstParameter() const; |
62 | ||
63 | Standard_EXPORT virtual Standard_Real LastParameter() const; | |
64 | ||
65 | Standard_EXPORT virtual GeomAbs_Shape Continuity() const; | |
66 | ||
67 | //! Returns the number of intervals for continuity | |
68 | //! <S>. May be one if Continuity(me) >= <S> | |
69 | Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const; | |
70 | ||
71 | //! Stores in <T> the parameters bounding the intervals | |
72 | //! of continuity <S>. | |
73 | //! | |
21c7c457 | 74 | //! The array must provide enough room to accommodate |
42cf5bc1 | 75 | //! for the parameters. i.e. T.Length() > NbIntervals() |
76 | Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const; | |
77 | ||
78 | //! Returns a curve equivalent of <me> between | |
79 | //! parameters <First> and <Last>. <Tol> is used to | |
80 | //! test for 3d points confusion. | |
81 | //! If <First> >= <Last> | |
c22b52d6 | 82 | Standard_EXPORT virtual Handle(Adaptor3d_Curve) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const; |
42cf5bc1 | 83 | |
84 | Standard_EXPORT virtual Standard_Boolean IsClosed() const; | |
85 | ||
86 | Standard_EXPORT virtual Standard_Boolean IsPeriodic() const; | |
87 | ||
88 | Standard_EXPORT virtual Standard_Real Period() const; | |
89 | ||
90 | //! Computes the point of parameter U on the curve. | |
91 | Standard_EXPORT virtual gp_Pnt Value (const Standard_Real U) const; | |
92 | ||
93 | //! Computes the point of parameter U on the curve. | |
94 | Standard_EXPORT virtual void D0 (const Standard_Real U, gp_Pnt& P) const; | |
95 | ||
96 | //! Computes the point of parameter U on the curve with its | |
97 | //! first derivative. | |
98 | //! Raised if the continuity of the current interval | |
99 | //! is not C1. | |
100 | Standard_EXPORT virtual void D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& V) const; | |
101 | ||
102 | ||
103 | //! Returns the point P of parameter U, the first and second | |
104 | //! derivatives V1 and V2. | |
105 | //! Raised if the continuity of the current interval | |
106 | //! is not C2. | |
107 | Standard_EXPORT virtual void D2 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2) const; | |
108 | ||
109 | ||
110 | //! Returns the point P of parameter U, the first, the second | |
111 | //! and the third derivative. | |
112 | //! Raised if the continuity of the current interval | |
113 | //! is not C3. | |
114 | Standard_EXPORT virtual void D3 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3) const; | |
115 | ||
116 | ||
117 | //! The returned vector gives the value of the derivative for the | |
118 | //! order of derivation N. | |
119 | //! Raised if the continuity of the current interval | |
120 | //! is not CN. | |
121 | //! Raised if N < 1. | |
122 | Standard_EXPORT virtual gp_Vec DN (const Standard_Real U, const Standard_Integer N) const; | |
123 | ||
124 | //! Returns the parametric resolution corresponding | |
125 | //! to the real space resolution <R3d>. | |
126 | Standard_EXPORT virtual Standard_Real Resolution (const Standard_Real R3d) const; | |
127 | ||
128 | //! Returns the type of the curve in the current | |
129 | //! interval : Line, Circle, Ellipse, Hyperbola, | |
130 | //! Parabola, BezierCurve, BSplineCurve, OtherCurve. | |
131 | Standard_EXPORT virtual GeomAbs_CurveType GetType() const; | |
132 | ||
133 | Standard_EXPORT virtual gp_Lin Line() const; | |
134 | ||
135 | Standard_EXPORT virtual gp_Circ Circle() const; | |
136 | ||
137 | Standard_EXPORT virtual gp_Elips Ellipse() const; | |
138 | ||
139 | Standard_EXPORT virtual gp_Hypr Hyperbola() const; | |
140 | ||
141 | Standard_EXPORT virtual gp_Parab Parabola() const; | |
142 | ||
143 | Standard_EXPORT virtual Standard_Integer Degree() const; | |
144 | ||
145 | Standard_EXPORT virtual Standard_Boolean IsRational() const; | |
146 | ||
147 | Standard_EXPORT virtual Standard_Integer NbPoles() const; | |
148 | ||
149 | Standard_EXPORT virtual Standard_Integer NbKnots() const; | |
150 | ||
151 | Standard_EXPORT virtual Handle(Geom_BezierCurve) Bezier() const; | |
152 | ||
153 | Standard_EXPORT virtual Handle(Geom_BSplineCurve) BSpline() const; | |
f4dee9bb | 154 | |
155 | Standard_EXPORT virtual Handle(Geom_OffsetCurve) OffsetCurve() const; | |
156 | ||
42cf5bc1 | 157 | Standard_EXPORT virtual ~Adaptor3d_Curve(); |
158 | ||
42cf5bc1 | 159 | }; |
160 | ||
42cf5bc1 | 161 | #endif // _Adaptor3d_Curve_HeaderFile |