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1 | // Created on: 1992-09-25 |
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_PathPointTool_HeaderFile |
18 | #define _IntSurf_PathPointTool_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 <Standard_Boolean.hxx> |
27 | #include <gp_Vec.hxx> |
28 | #include <gp_Dir2d.hxx> |
29 | #include <Standard_Integer.hxx> |
30 | class Standard_OutOfRange; |
31 | class StdFail_UndefinedDerivative; |
32 | class IntSurf_PathPoint; |
33 | |
34 | |
35 | |
36 | class IntSurf_PathPointTool |
37 | { |
38 | public: |
39 | |
40 | DEFINE_STANDARD_ALLOC |
41 | |
42 | |
43 | //! Returns the 3d coordinates of the starting point. |
44 | static gp_Pnt Value3d (const IntSurf_PathPoint& PStart); |
45 | |
46 | //! Returns the <U, V> parameters which are associated |
47 | //! with <P> |
48 | //! it's the parameters which start the marching algorithm |
49 | static void Value2d (const IntSurf_PathPoint& PStart, Standard_Real& U, Standard_Real& V); |
50 | |
51 | //! Returns True if the point is a point on a non-oriented |
52 | //! arc, which means that the intersection line does not |
53 | //! stop at such a point but just go through such a point. |
54 | //! IsPassingPnt is True when IsOnArc is True |
55 | static Standard_Boolean IsPassingPnt (const IntSurf_PathPoint& PStart); |
56 | |
57 | //! Returns True if the surfaces are tangent at this point. |
58 | //! IsTangent can be True when IsOnArc is True |
59 | //! if IsPassingPnt is True and IsTangent is True,this point |
60 | //! is a stopped point. |
61 | static Standard_Boolean IsTangent (const IntSurf_PathPoint& PStart); |
62 | |
63 | //! returns the tangent at the intersection in 3d space |
64 | //! associated to <P> |
65 | //! an exception is raised if IsTangent is true. |
66 | static gp_Vec Direction3d (const IntSurf_PathPoint& PStart); |
67 | |
68 | //! returns the tangent at the intersection in the |
69 | //! parametric space of the parametrized surface.This tangent |
70 | //! is associated to the value2d |
71 | //! la tangente a un sens signifiant (indique le sens de chemin |
72 | //! ement) |
73 | //! an exception is raised if IsTangent is true. |
74 | static gp_Dir2d Direction2d (const IntSurf_PathPoint& PStart); |
75 | |
76 | //! Returns the multiplicity of the point i-e |
77 | //! the number of auxillar parameters associated to the |
78 | //! point which the principal parameters are given by Value2d |
79 | static Standard_Integer Multiplicity (const IntSurf_PathPoint& PStart); |
80 | |
81 | //! Parametric coordinates associated to the multiplicity. |
82 | //! An exception is raised if Mult<=0 or Mult>multiplicity. |
83 | static void Parameters (const IntSurf_PathPoint& PStart, const Standard_Integer Mult, Standard_Real& U, Standard_Real& V); |
84 | |
85 | |
86 | |
87 | |
88 | protected: |
89 | |
90 | |
91 | |
92 | |
93 | |
94 | private: |
95 | |
96 | |
97 | |
98 | |
99 | |
100 | }; |
101 | |
102 | |
103 | #include <IntSurf_PathPointTool.lxx> |
104 | |
105 | |
106 | |
107 | |
108 | |
109 | #endif // _IntSurf_PathPointTool_HeaderFile |