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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
-- File: Adaptor2d_Curve2d.cdl
-- Created: Fri Apr 2 11:52:37 1993
-- Author: Bruno DUMORTIER
-- <dub@phylox>
---Copyright: Matra Datavision 1993
deferred class Curve2d from Adaptor2d
---Purpose: Root class for 2D curves on which geometric
-- algorithms work.
-- An adapted curve is an interface between the
-- services provided by a curve, and those required of
-- the curve by algorithms, which use it.
-- A derived concrete class is provided:
-- Geom2dAdaptor_Curve for a curve from the Geom2d package.
uses
Array1OfReal from TColStd,
Shape from GeomAbs,
CurveType from GeomAbs,
Vec2d from gp,
Pnt2d from gp,
Circ2d from gp,
Elips2d from gp,
Hypr2d from gp,
Parab2d from gp,
Lin2d from gp,
BezierCurve from Geom2d,
BSplineCurve from Geom2d,
HCurve2d from Adaptor2d
raises
OutOfRange from Standard,
NoSuchObject from Standard,
DomainError from Standard
is
--
-- Global methods - Apply to the whole curve.
--
Delete(me:out) is virtual;
---C++: alias "Standard_EXPORT virtual ~Adaptor2d_Curve2d(){Delete();}"
FirstParameter(me) returns Real
is virtual;
LastParameter(me) returns Real
is virtual;
Continuity(me) returns Shape from GeomAbs
is virtual;
NbIntervals(me; S : Shape from GeomAbs) returns Integer
---Purpose: If necessary, breaks the curve in intervals of
-- continuity <S>. And returns the number of
-- intervals.
is virtual;
Intervals(me; T : in out Array1OfReal from TColStd;
S : Shape from GeomAbs)
---Purpose: Stores in <T> the parameters bounding the intervals
-- of continuity <S>.
--
-- The array must provide enough room to accomodate
-- for the parameters. i.e. T.Length() > NbIntervals()
raises
OutOfRange from Standard
is virtual;
Trim(me; First, Last, Tol : Real) returns HCurve2d from Adaptor2d
---Purpose: Returns a curve equivalent of <me> between
-- parameters <First> and <Last>. <Tol> is used to
-- test for 3d points confusion.
raises
OutOfRange from Standard
---Purpose: If <First> >= <Last>
is virtual;
--
-- Local methods - Apply to the current interval.
-- By default the current interval is the first.
--
IsClosed(me) returns Boolean
is virtual;
IsPeriodic(me) returns Boolean
is virtual;
Period(me) returns Real
raises
DomainError from Standard -- if the curve is not periodic
is virtual;
Value(me; U : Real) returns Pnt2d from gp
--- Purpose : Computes the point of parameter U on the curve.
is virtual;
D0 (me; U : Real; P : out Pnt2d from gp)
--- Purpose : Computes the point of parameter U on the curve.
is virtual;
D1 (me; U : Real; P : out Pnt2d from gp ; V : out Vec2d from gp)
--- Purpose : Computes the point of parameter U on the curve with its
-- first derivative.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C1.
is virtual;
D2 (me; U : Real; P : out Pnt2d from gp; V1, V2 : out Vec2d from gp)
--- Purpose :
-- Returns the point P of parameter U, the first and second
-- derivatives V1 and V2.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C2.
is virtual;
D3 (me; U : Real; P : out Pnt2d from gp; V1, V2, V3 : out Vec2d from gp)
--- Purpose :
-- Returns the point P of parameter U, the first, the second
-- and the third derivative.
raises
DomainError from Standard
--- Purpose : Raised if the continuity of the current interval
-- is not C3.
is virtual;
DN (me; U : Real; N : Integer) returns Vec2d from gp
--- Purpose :
-- The returned vector gives the value of the derivative for the
-- order of derivation N.
raises
DomainError from Standard,
--- Purpose : Raised if the continuity of the current interval
-- is not CN.
OutOfRange from Standard
--- Purpose : Raised if N < 1.
is virtual;
Resolution(me; R3d : Real) returns Real
---Purpose : Returns the parametric resolution corresponding
-- to the real space resolution <R3d>.
is virtual;
GetType(me) returns CurveType from GeomAbs
---Purpose: Returns the type of the curve in the current
-- interval : Line, Circle, Ellipse, Hyperbola,
-- Parabola, BezierCurve, BSplineCurve, OtherCurve.
is virtual;
--
-- The following methods must be called when GetType returned
-- the corresponding type.
--
Line(me) returns Lin2d from gp
raises
NoSuchObject from Standard
is virtual;
Circle(me) returns Circ2d from gp
raises
NoSuchObject from Standard
is virtual;
Ellipse(me) returns Elips2d from gp
raises
NoSuchObject from Standard
is virtual;
Hyperbola(me) returns Hypr2d from gp
raises
NoSuchObject from Standard
is virtual;
Parabola(me) returns Parab2d from gp
raises
NoSuchObject from Standard
is virtual;
Degree(me) returns Integer
raises
NoSuchObject from Standard
is virtual;
IsRational(me) returns Boolean
raises
NoSuchObject from Standard
is virtual;
NbPoles(me) returns Integer
raises
NoSuchObject from Standard
is virtual;
NbKnots(me) returns Integer
raises
NoSuchObject from Standard
is virtual;
Bezier(me) returns BezierCurve from Geom2d
raises
NoSuchObject from Standard
is virtual;
BSpline(me) returns BSplineCurve from Geom2d
raises
NoSuchObject from Standard
is virtual;
end Curve2d;
|
