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1 | // Created on: 1995-12-04 |
2 | // Created by: Laurent BOURESCHE |
3 | // Copyright (c) 1995-1999 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 _GeomFill_TgtField_HeaderFile |
18 | #define _GeomFill_TgtField_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_Type.hxx> |
22 | |
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23 | #include <Standard_Transient.hxx> |
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24 | #include <Standard_Boolean.hxx> |
25 | #include <Standard_Real.hxx> |
26 | class Law_BSpline; |
27 | class gp_Vec; |
28 | |
29 | |
30 | class GeomFill_TgtField; |
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31 | DEFINE_STANDARD_HANDLE(GeomFill_TgtField, Standard_Transient) |
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32 | |
33 | //! Root class defining the methods we need to make an |
34 | //! algorithmic tangents field. |
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35 | class GeomFill_TgtField : public Standard_Transient |
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36 | { |
37 | |
38 | public: |
39 | |
40 | |
41 | Standard_EXPORT virtual Standard_Boolean IsScalable() const; |
42 | |
43 | Standard_EXPORT virtual void Scale (const Handle(Law_BSpline)& Func); |
44 | |
45 | //! Computes the value of the field of tangency at |
46 | //! parameter W. |
47 | Standard_EXPORT virtual gp_Vec Value (const Standard_Real W) const = 0; |
48 | |
49 | //! Computes the derivative of the field of tangency at |
50 | //! parameter W. |
51 | Standard_EXPORT virtual gp_Vec D1 (const Standard_Real W) const = 0; |
52 | |
53 | //! Computes the value and the derivative of the field of |
54 | //! tangency at parameter W. |
55 | Standard_EXPORT virtual void D1 (const Standard_Real W, gp_Vec& V, gp_Vec& DV) const = 0; |
56 | |
57 | |
58 | |
59 | |
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60 | DEFINE_STANDARD_RTTIEXT(GeomFill_TgtField,Standard_Transient) |
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61 | |
62 | protected: |
63 | |
64 | |
65 | |
66 | |
67 | private: |
68 | |
69 | |
70 | |
71 | |
72 | }; |
73 | |
74 | |
75 | |
76 | |
77 | |
78 | |
79 | |
80 | #endif // _GeomFill_TgtField_HeaderFile |