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1 | // Created on: 1992-10-20 |
2 | // Created by: Remi GILET |
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 _Geom2dGcc_Lin2d2Tan_HeaderFile |
18 | #define _Geom2dGcc_Lin2d2Tan_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Standard_Boolean.hxx> |
25 | #include <Standard_Integer.hxx> |
26 | #include <TColgp_Array1OfLin2d.hxx> |
27 | #include <GccEnt_Array1OfPosition.hxx> |
28 | #include <TColgp_Array1OfPnt2d.hxx> |
29 | #include <TColStd_Array1OfReal.hxx> |
30 | #include <Standard_Real.hxx> |
31 | #include <GccEnt_Position.hxx> |
32 | class StdFail_NotDone; |
33 | class GccEnt_BadQualifier; |
34 | class Standard_OutOfRange; |
35 | class Geom2dGcc_QualifiedCurve; |
36 | class gp_Pnt2d; |
37 | class gp_Lin2d; |
38 | class Geom2dGcc_Lin2d2TanIter; |
39 | class Geom2dAdaptor_Curve; |
40 | |
41 | |
42 | //! This class implements the algorithms used to |
43 | //! create 2d lines tangent to 2 other elements which |
44 | //! can be circles, curves or points. |
45 | //! More than one argument must be a curve. |
46 | //! Describes functions for building a 2D line: |
47 | //! - tangential to 2 curves, or |
48 | //! - tangential to a curve and passing through a point. |
49 | //! A Lin2d2Tan object provides a framework for: |
50 | //! - defining the construction of 2D line(s), |
51 | //! - implementing the construction algorithm, and |
52 | //! - consulting the result(s). |
53 | //! |
54 | //! Note: Some constructors may check the type of the qualified argument |
55 | //! and raise BadQualifier Error in case of incorrect couple (qualifier, curv). |
56 | class Geom2dGcc_Lin2d2Tan |
57 | { |
58 | public: |
59 | |
60 | DEFINE_STANDARD_ALLOC |
61 | |
62 | |
63 | //! This class implements the algorithms used to create 2d |
64 | //! line tangent to two curves. |
65 | //! Tolang is used to determine the tolerance for the tangency points. |
66 | Standard_EXPORT Geom2dGcc_Lin2d2Tan(const Geom2dGcc_QualifiedCurve& Qualified1, const Geom2dGcc_QualifiedCurve& Qualified2, const Standard_Real Tolang); |
67 | |
68 | //! This class implements the algorithms used to create 2d |
69 | //! lines passing thrue a point and tangent to a curve. |
70 | //! Tolang is used to determine the tolerance for the tangency points. |
71 | Standard_EXPORT Geom2dGcc_Lin2d2Tan(const Geom2dGcc_QualifiedCurve& Qualified1, const gp_Pnt2d& ThePoint, const Standard_Real Tolang); |
72 | |
73 | //! This class implements the algorithms used to create 2d |
74 | //! line tangent to two curves. |
75 | //! Tolang is used to determine the tolerance for the tangency points. |
76 | //! Param1 is used for the initial guess on the first curve. |
77 | //! Param2 is used for the initial guess on the second curve. |
78 | Standard_EXPORT Geom2dGcc_Lin2d2Tan(const Geom2dGcc_QualifiedCurve& Qualified1, const Geom2dGcc_QualifiedCurve& Qualified2, const Standard_Real Tolang, const Standard_Real Param1, const Standard_Real Param2); |
79 | |
80 | //! This class implements the algorithms used to create 2d |
81 | //! lines passing thrue a point and tangent to a curve. |
82 | //! Tolang is used to determine the tolerance for the tangency points. |
83 | //! Param2 is used for the initial guess on the curve. |
84 | Standard_EXPORT Geom2dGcc_Lin2d2Tan(const Geom2dGcc_QualifiedCurve& Qualified1, const gp_Pnt2d& ThePoint, const Standard_Real Tolang, const Standard_Real Param1); |
85 | |
86 | //! Returns true if the construction algorithm does not fail |
87 | //! (even if it finds no solution). |
88 | //! Note: IsDone protects against a failure arising from a |
89 | //! more internal intersection algorithm, which has |
90 | //! reached its numeric limits. |
91 | Standard_EXPORT Standard_Boolean IsDone() const; |
92 | |
93 | //! Returns the number of lines, representing solutions computed by this algorithm. |
94 | //! Exceptions StdFail_NotDone if the construction fails.R |
95 | Standard_EXPORT Standard_Integer NbSolutions() const; |
96 | |
97 | //! Returns a line, representing the solution of index Index computed by this algorithm. |
98 | //! Warning |
99 | //! This indexing simply provides a means of consulting the |
100 | //! solutions. The index values are not associated with |
101 | //! these solutions outside the context of the algorithm object. |
102 | //! Exceptions |
103 | //! Standard_OutOfRange if Index is less than zero or |
104 | //! greater than the number of solutions computed by this algorithm. |
105 | //! StdFail_NotDone if the construction fails. |
106 | Standard_EXPORT gp_Lin2d ThisSolution (const Standard_Integer Index) const; |
107 | |
108 | //! Returns the qualifiers Qualif1 and Qualif2 of the |
109 | //! tangency arguments for the solution of index Index |
110 | //! computed by this algorithm. |
111 | //! The returned qualifiers are: |
112 | //! - those specified at the start of construction when the |
113 | //! solutions are defined as enclosing or outside with |
114 | //! respect to the arguments, or |
115 | //! - those computed during construction (i.e. enclosing or |
116 | //! outside) when the solutions are defined as unqualified |
117 | //! with respect to the arguments, or |
118 | //! - GccEnt_noqualifier if the tangency argument is a point. |
119 | //! Exceptions |
120 | //! Standard_OutOfRange if Index is less than zero or |
121 | //! greater than the number of solutions computed by this algorithm. |
122 | //! StdFail_NotDone if the construction fails. |
123 | Standard_EXPORT void WhichQualifier (const Standard_Integer Index, GccEnt_Position& Qualif1, GccEnt_Position& Qualif2) const; |
124 | |
125 | //! Returns informations about the tangency point between the |
126 | //! result and the first argument. |
127 | //! ParSol is the intrinsic parameter of the point PntSol on |
128 | //! the solution curv. |
129 | //! ParArg is the intrinsic parameter of the point PntSol on the argument curv. |
130 | //! Exceptions |
131 | //! Standard_OutOfRange if Index is less than zero or |
132 | //! greater than the number of solutions computed by this algorithm. |
133 | //! StdFail_NotDone if the construction fails. |
134 | Standard_EXPORT void Tangency1 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; |
135 | |
136 | //! Returns informations about the tangency point between the |
137 | //! result and the first argument. |
138 | //! ParSol is the intrinsic parameter of the point PntSol on the solution curv. |
139 | //! ParArg is the intrinsic parameter of the point PntSol on the argument curv. |
140 | //! Exceptions |
141 | //! Standard_OutOfRange if Index is less than zero or |
142 | //! greater than the number of solutions computed by this algorithm. |
143 | //! StdFail_NotDone if the construction fails. |
144 | Standard_EXPORT void Tangency2 (const Standard_Integer Index, Standard_Real& ParSol, Standard_Real& ParArg, gp_Pnt2d& PntSol) const; |
145 | |
146 | |
147 | |
148 | |
149 | protected: |
150 | |
151 | |
152 | |
153 | |
154 | |
155 | private: |
156 | |
157 | |
158 | Standard_EXPORT Standard_Boolean Add (const Standard_Integer theIndex, const Geom2dGcc_Lin2d2TanIter& theLin, const Standard_Real theTol, const Geom2dAdaptor_Curve& theC1, const Geom2dAdaptor_Curve& theC2); |
159 | |
160 | |
161 | Standard_Boolean WellDone; |
162 | Standard_Integer NbrSol; |
163 | TColgp_Array1OfLin2d linsol; |
164 | GccEnt_Array1OfPosition qualifier1; |
165 | GccEnt_Array1OfPosition qualifier2; |
166 | TColgp_Array1OfPnt2d pnttg1sol; |
167 | TColgp_Array1OfPnt2d pnttg2sol; |
168 | TColStd_Array1OfReal par1sol; |
169 | TColStd_Array1OfReal par2sol; |
170 | TColStd_Array1OfReal pararg1; |
171 | TColStd_Array1OfReal pararg2; |
172 | |
173 | |
174 | }; |
175 | |
176 | |
177 | |
178 | |
179 | |
180 | |
181 | |
182 | #endif // _Geom2dGcc_Lin2d2Tan_HeaderFile |