1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
-- File: Lin2d2Tan.cdl
-- Created: Wed Apr 3 11:15:13 1991
-- Author: Remi GILET
-- <reg@topsn2>
---Copyright: Matra Datavision 1991
class Lin2d2Tan
from GccAna
---Purpose: This class implements the algorithms used to
-- create 2d lines tangent to 2 other elements which
-- can be circles or points.
-- Describes functions for building a 2D line:
-- - tangential to 2 circles, or
-- - tangential to a circle and passing through a point, or
-- - passing through 2 points.
-- A Lin2d2Tan object provides a framework for:
-- - defining the construction of 2D line(s),
-- - implementing the construction algorithm, and
-- consulting the result(s).
-- Some constructors may check the type of the qualified argument
-- and raise BadQualifier Error in case of incorrect couple (qualifier,
-- curv).
-- For example: "EnclosedCirc".
uses Pnt2d from gp,
Lin2d from gp,
QualifiedCirc from GccEnt,
Array1OfLin2d from TColgp,
Array1OfPnt2d from TColgp,
Array1OfReal from TColStd,
Position from GccEnt,
Array1OfPosition from GccEnt
raises OutOfRange from Standard,
BadQualifier from GccEnt,
NotDone from StdFail
is
Create (ThePoint1 : Pnt2d from gp ;
ThePoint2 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Lin2d2Tan;
---Purpose: This methods implements the algorithms used to
-- create 2d lines passing thrue 2 points.
-- Tolerance is used because we can't create a line
-- when the distance between the two points is too small.
Create (Qualified1 : QualifiedCirc from GccEnt ;
ThePoint : Pnt2d from gp ;
Tolerance : Real from Standard) returns Lin2d2Tan
raises BadQualifier;
---Purpose: This methods implements the algorithms used to
-- create 2d lines tangent to one circle and passing
-- thrue a point.
-- Exception BadQualifier is raised in the case of
-- EnclosedCirc
-- Tolerance is used because there is no solution
-- when the point is inside the solution according to
-- the tolerance.
Create (Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedCirc from GccEnt ;
Tolerance : Real from Standard) returns Lin2d2Tan
raises BadQualifier;
---Purpose: This methods implements the algorithms used to
-- create 2d lines tangent to 2 circles.
-- Exception BadQualifier is raised in the case of
-- EnclosedCirc
--------------------------------------------------------------------------
IsDone (me) returns Boolean from Standard
is static;
---Purpose: This method returns true when there is a solution
-- and false in the other cases.
NbSolutions(me) returns Integer from Standard
---Purpose: This method returns the number of solutions.
-- Raises NotDone if the construction algorithm didn't succeed.
raises NotDone
is static;
ThisSolution(me ;
Index : Integer from Standard) returns Lin2d
---Purpose : Returns the solution number Index and raises OutOfRange
-- exception if Index is greater than the number of solutions.
-- Be carefull: the Index is only a way to get all the
-- solutions, but is not associated to theses outside the
-- context of the algorithm-object. Raises OutOfRange is raised if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
WhichQualifier(me ;
Index : Integer from Standard;
Qualif1 : out Position from GccEnt ;
Qualif2 : out Position from GccEnt )
raises OutOfRange, NotDone
is static;
---Purpose: Returns the qualifiers Qualif1 and Qualif2 of the
-- tangency arguments for the solution of index Index
-- computed by this algorithm.
-- The returned qualifiers are:
-- - those specified at the start of construction when the
-- solutions are defined as enclosing or outside with
-- respect to the arguments, or
-- - those computed during construction (i.e. enclosing or
-- outside) when the solutions are defined as unqualified
-- with respect to the arguments, or
-- - GccEnt_noqualifier if the tangency argument is a point.
-- Exceptions
-- Standard_OutOfRange if Index is less than zero or
-- greater than the number of solutions computed by this algorithm.
-- StdFail_NotDone if the construction fails.
Tangency1(me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
---Purpose : Returns informations about the tangency point between the
-- result number Index and the first argument.
-- ParSol is the intrinsic parameter of the point PntSol on
-- the solution curv.
-- ParArg is the intrinsic parameter of the point PntSol on
-- the argument curv. Raises OutOfRange is raised if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
Tangency2(me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
---Purpose : Returns informations about the tangency point between the
-- result number Index and the second argument.
-- ParSol is the intrinsic parameter of the point ParSol on
-- the solution curv.
-- ParArg is the intrinsic parameter of the point PntSol on
-- the argument curv. Raises OutOfRange is raised if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
fields
WellDone : Boolean from Standard;
---Purpose : True if the algorithm succeeded.
NbrSol : Integer from Standard;
---Purpose : The number of possible solutions. We have to decide about the
-- status of the multiple solutions...
linsol : Array1OfLin2d from TColgp;
---Purpose : Thesolutions.
qualifier1 : Array1OfPosition from GccEnt;
---Purpose: The qualifiers of the first argument.
qualifier2 : Array1OfPosition from GccEnt;
---Purpose: The qualifiers of the second argument.
pnttg1sol : Array1OfPnt2d from TColgp;
---Purpose: The tangency point between the solution and the first
-- argument on the solution.
pnttg2sol : Array1OfPnt2d from TColgp;
---Purpose: The tangency point between the solution and the second
-- argument on the solution.
par1sol : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the first argument on the solution.
par2sol : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the second argument on the solution.
pararg1 : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the first argument on the first argument.
pararg2 : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the second argument on the second argument.
end Lin2d2Tan;
|
