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1 | // Created on: 1992-10-01 |
2 | // Created by: Jacques GOUSSARD |
3 | // Copyright (c) 1992-1999 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 _IntSurf_InteriorPointTool_HeaderFile |
18 | #define _IntSurf_InteriorPointTool_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <gp_Pnt.hxx> |
25 | #include <Standard_Real.hxx> |
26 | #include <gp_Vec.hxx> |
27 | #include <gp_Dir2d.hxx> |
28 | class IntSurf_InteriorPoint; |
29 | |
30 | |
31 | //! This class provides a tool on the "interior point" |
32 | //! that can be used to instantiates the Walking |
33 | //! algorithmes (see package IntWalk). |
34 | class IntSurf_InteriorPointTool |
35 | { |
36 | public: |
37 | |
38 | DEFINE_STANDARD_ALLOC |
39 | |
40 | |
41 | //! Returns the 3d coordinates of the starting point. |
42 | static gp_Pnt Value3d (const IntSurf_InteriorPoint& PStart); |
43 | |
44 | //! Returns the <U,V> parameters which are associated |
45 | //! with <P> |
46 | //! it's the parameters which start the marching algorithm |
47 | static void Value2d (const IntSurf_InteriorPoint& PStart, Standard_Real& U, Standard_Real& V); |
48 | |
49 | //! returns the tangent at the intersectin in 3d space |
50 | //! associated to <P> |
51 | static gp_Vec Direction3d (const IntSurf_InteriorPoint& PStart); |
52 | |
53 | //! returns the tangent at the intersectin in the |
54 | //! parametric space of the parametrized surface.This tangent |
55 | //! is associated to the value2d |
56 | static gp_Dir2d Direction2d (const IntSurf_InteriorPoint& PStart); |
57 | |
58 | |
59 | |
60 | |
61 | protected: |
62 | |
63 | |
64 | |
65 | |
66 | |
67 | private: |
68 | |
69 | |
70 | |
71 | |
72 | |
73 | }; |
74 | |
75 | |
76 | #include <IntSurf_InteriorPointTool.lxx> |
77 | |
78 | |
79 | |
80 | |
81 | |
82 | #endif // _IntSurf_InteriorPointTool_HeaderFile |