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1 | // Created on: 2002-08-02 |
2 | // Created by: Alexander KARTOMIN (akm) |
3 | // Copyright (c) 2002-2014 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #ifndef _LProp3d_CurveTool_HeaderFile |
17 | #define _LProp3d_CurveTool_HeaderFile |
18 | |
19 | #include <Standard.hxx> |
20 | #include <Standard_DefineAlloc.hxx> |
21 | #include <Standard_Handle.hxx> |
22 | |
23 | #include <Standard_Real.hxx> |
24 | #include <Standard_Integer.hxx> |
25 | class Adaptor3d_HCurve; |
26 | class gp_Pnt; |
27 | class gp_Vec; |
28 | |
29 | |
30 | |
31 | class LProp3d_CurveTool |
32 | { |
33 | public: |
34 | |
35 | DEFINE_STANDARD_ALLOC |
36 | |
37 | |
38 | //! Computes the point <P> of parameter <U> on the HCurve <C>. |
39 | Standard_EXPORT static void Value (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P); |
40 | |
41 | //! Computes the point <P> and first derivative <V1> of |
42 | //! parameter <U> on the HCurve <C>. |
43 | Standard_EXPORT static void D1 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1); |
44 | |
45 | //! Computes the point <P>, the first derivative <V1> and second |
46 | //! derivative <V2> of parameter <U> on the HCurve <C>. |
47 | Standard_EXPORT static void D2 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2); |
48 | |
49 | //! Computes the point <P>, the first derivative <V1>, the |
50 | //! second derivative <V2> and third derivative <V3> of |
51 | //! parameter <U> on the HCurve <C>. |
52 | Standard_EXPORT static void D3 (const Handle(Adaptor3d_HCurve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3); |
53 | |
54 | //! returns the order of continuity of the HCurve <C>. |
55 | //! returns 1 : first derivative only is computable |
56 | //! returns 2 : first and second derivative only are computable. |
57 | //! returns 3 : first, second and third are computable. |
58 | Standard_EXPORT static Standard_Integer Continuity (const Handle(Adaptor3d_HCurve)& C); |
59 | |
60 | //! returns the first parameter bound of the HCurve. |
61 | Standard_EXPORT static Standard_Real FirstParameter (const Handle(Adaptor3d_HCurve)& C); |
62 | |
63 | //! returns the last parameter bound of the HCurve. |
64 | //! FirstParameter must be less than LastParamenter. |
65 | Standard_EXPORT static Standard_Real LastParameter (const Handle(Adaptor3d_HCurve)& C); |
66 | |
67 | |
68 | |
69 | |
70 | protected: |
71 | |
72 | |
73 | |
74 | |
75 | |
76 | private: |
77 | |
78 | |
79 | |
80 | |
81 | |
82 | }; |
83 | |
84 | |
85 | |
86 | |
87 | |
88 | |
89 | |
90 | #endif // _LProp3d_CurveTool_HeaderFile |