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1 | // Created on: 1991-04-24 |
2 | // Created by: Remi GILET |
3 | // Copyright (c) 1991-1999 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 _Geom2dGcc_Lin2d2TanIter_HeaderFile |
18 | #define _Geom2dGcc_Lin2d2TanIter_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Standard_Boolean.hxx> |
25 | #include <gp_Lin2d.hxx> |
26 | #include <GccEnt_Position.hxx> |
27 | #include <gp_Pnt2d.hxx> |
28 | #include <Standard_Real.hxx> |
29 | class GccEnt_BadQualifier; |
30 | class StdFail_NotDone; |
31 | class Geom2dGcc_QCurve; |
32 | class gp_Pnt2d; |
33 | class GccEnt_QualifiedCirc; |
34 | class gp_Lin2d; |
35 | |
36 | |
37 | //! This class implements the algorithms used to |
38 | //! create 2d lines tangent to 2 other elements which |
39 | //! can be circles, curves or points. |
40 | //! More than one argument must be a curve. |
41 | //! |
42 | //! Note: Some constructors may check the type of the qualified argument |
43 | //! and raise BadQualifier Error in case of incorrect couple (qualifier, |
44 | //! curv). |
45 | //! For example: "EnclosedCirc". |
46 | class Geom2dGcc_Lin2d2TanIter |
47 | { |
48 | public: |
49 | |
50 | DEFINE_STANDARD_ALLOC |
51 | |
52 | |
53 | //! This class implements the algorithms used to create 2d |
54 | //! lines passing thrue a point and tangent to a curve. |
55 | //! Tolang is used to determine the tolerance for the |
56 | //! tangency points. |
57 | //! Param2 is used for the initial guess on the curve. |
58 | Standard_EXPORT Geom2dGcc_Lin2d2TanIter(const Geom2dGcc_QCurve& Qualified1, const gp_Pnt2d& ThePoint, const Standard_Real Param1, const Standard_Real Tolang); |
59 | |
60 | //! This class implements the algorithms used to create 2d |
61 | //! line tangent to a circle and to a cuve. |
62 | //! Tolang is used to determine the tolerance for the |
63 | //! tangency points. |
64 | //! Param2 is used for the initial guess on the curve. |
65 | //! Exception BadQualifier is raised in the case of |
66 | //! EnclosedCirc |
67 | Standard_EXPORT Geom2dGcc_Lin2d2TanIter(const GccEnt_QualifiedCirc& Qualified1, const Geom2dGcc_QCurve& Qualified2, const Standard_Real Param2, const Standard_Real Tolang); |
68 | |
69 | //! This class implements the algorithms used to create 2d |
70 | //! line tangent to two curves. |
71 | //! Tolang is used to determine the tolerance for the |
72 | //! tangency points. |
73 | //! Param1 is used for the initial guess on the first curve. |
74 | //! Param2 is used for the initial guess on the second curve. |
75 | Standard_EXPORT Geom2dGcc_Lin2d2TanIter(const Geom2dGcc_QCurve& Qualified1, const Geom2dGcc_QCurve& Qualified2, const Standard_Real Param1, const Standard_Real Param2, const Standard_Real Tolang); |
76 | |
77 | //! This methode returns true when there is a solution |
78 | //! and false in the other cases. |
79 | Standard_EXPORT Standard_Boolean IsDone() const; |
80 | |
81 | //! Returns the solution. |
82 | Standard_EXPORT gp_Lin2d ThisSolution() const; |
83 | |
84 | Standard_EXPORT void WhichQualifier (GccEnt_Position& Qualif1, GccEnt_Position& Qualif2) const; |
85 | |
86 | //! Returns informations about the tangency point between the |
87 | //! result and the first argument. |
88 | //! ParSol is the intrinsic parameter of the point PntSol on |
89 | //! the solution curv. |
90 | //! ParArg is the intrinsic parameter of the point PntSol on |
91 | //! the argument curv. |
92 | Standard_EXPORT void Tangency1 (Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; |
93 | |
94 | Standard_EXPORT void Tangency2 (Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; |
95 | |
96 | |
97 | |
98 | |
99 | protected: |
100 | |
101 | |
102 | |
103 | |
104 | |
105 | private: |
106 | |
107 | |
108 | |
109 | Standard_Boolean WellDone; |
110 | gp_Lin2d linsol; |
111 | GccEnt_Position qualifier1; |
112 | GccEnt_Position qualifier2; |
113 | gp_Pnt2d pnttg1sol; |
114 | gp_Pnt2d pnttg2sol; |
115 | Standard_Real par1sol; |
116 | Standard_Real par2sol; |
117 | Standard_Real pararg1; |
118 | Standard_Real pararg2; |
119 | |
120 | |
121 | }; |
122 | |
123 | |
124 | |
125 | |
126 | |
127 | |
128 | |
129 | #endif // _Geom2dGcc_Lin2d2TanIter_HeaderFile |