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1 | // Created on: 1993-12-07 |
2 | // Created by: Modelistation |
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 _BRepGProp_EdgeTool_HeaderFile |
18 | #define _BRepGProp_EdgeTool_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Standard_Real.hxx> |
25 | #include <Standard_Integer.hxx> |
26 | #include <GeomAbs_Shape.hxx> |
27 | #include <TColStd_Array1OfReal.hxx> |
28 | class Standard_OutOfRange; |
29 | class BRepAdaptor_Curve; |
30 | class gp_Pnt; |
31 | class gp_Vec; |
32 | |
33 | |
34 | //! Provides the required methods to instantiate |
35 | //! CGProps from GProp with a Curve from BRepAdaptor. |
36 | class BRepGProp_EdgeTool |
37 | { |
38 | public: |
39 | |
40 | DEFINE_STANDARD_ALLOC |
41 | |
42 | |
43 | |
44 | //! Returns the parametric value of the start point of |
45 | //! the curve. The curve is oriented from the start point |
46 | //! to the end point. |
47 | Standard_EXPORT static Standard_Real FirstParameter (const BRepAdaptor_Curve& C); |
48 | |
49 | |
50 | //! Returns the parametric value of the end point of |
51 | //! the curve. The curve is oriented from the start point |
52 | //! to the end point. |
53 | Standard_EXPORT static Standard_Real LastParameter (const BRepAdaptor_Curve& C); |
54 | |
55 | |
56 | //! Returns the number of Gauss points required to do |
57 | //! the integration with a good accuracy using the |
58 | //! Gauss method. For a polynomial curve of degree n |
59 | //! the maxima of accuracy is obtained with an order |
60 | //! of integration equal to 2*n-1. |
61 | Standard_EXPORT static Standard_Integer IntegrationOrder (const BRepAdaptor_Curve& C); |
62 | |
63 | //! Returns the point of parameter U on the loaded curve. |
64 | Standard_EXPORT static gp_Pnt Value (const BRepAdaptor_Curve& C, const Standard_Real U); |
65 | |
66 | |
67 | //! Returns the point of parameter U and the first derivative |
68 | //! at this point. |
69 | Standard_EXPORT static void D1 (const BRepAdaptor_Curve& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1); |
70 | |
71 | //! Returns the number of intervals for continuity |
72 | //! <S>. May be one if Continuity(me) >= <S> |
73 | Standard_EXPORT static Standard_Integer NbIntervals (const BRepAdaptor_Curve& C, const GeomAbs_Shape S); |
74 | |
75 | //! Stores in <T> the parameters bounding the intervals |
76 | //! of continuity <S>. |
77 | //! |
78 | //! The array must provide enough room to accomodate |
79 | //! for the parameters. i.e. T.Length() > NbIntervals() |
80 | Standard_EXPORT static void Intervals (const BRepAdaptor_Curve& C, TColStd_Array1OfReal& T, const GeomAbs_Shape S); |
81 | |
82 | |
83 | |
84 | |
85 | protected: |
86 | |
87 | |
88 | |
89 | |
90 | |
91 | private: |
92 | |
93 | |
94 | |
95 | |
96 | |
97 | }; |
98 | |
99 | |
100 | |
101 | |
102 | |
103 | |
104 | |
105 | #endif // _BRepGProp_EdgeTool_HeaderFile |