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1 | -- Created on: 1993-03-24 |
2 | -- Created by: JCV |
3 | -- Copyright (c) 1993-1999 Matra Datavision |
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4 | -- Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | -- |
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6 | -- This file is part of Open CASCADE Technology software library. |
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7 | -- |
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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 |
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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. |
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13 | -- |
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14 | -- Alternatively, this file may be used under the terms of Open CASCADE |
15 | -- commercial license or contractual agreement. |
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16 | |
17 | package Geom2d |
18 | |
19 | --- Purpose : |
20 | -- This package contains the definition of the geometric objects |
21 | -- such as point, vector, axis placement, curves and the |
22 | -- description of the geometric transformations available |
23 | -- for these objects. |
24 | -- All these entities are defined in 2D space. |
25 | -- This package gives the possibility : |
26 | -- . to create geometric objects, |
27 | -- . to have information about them, |
28 | -- . to modify these objects. |
29 | -- This package uses the services of the package gp (Geometric |
30 | -- processor) which describes non-persistent objects for algebraic |
31 | -- calculus and basic analytic geometry. The purpose of this package |
32 | -- is to create persistent geometric objects and to read geometric |
33 | -- information about these objects. Complexes geometric algorithmes |
34 | -- are not described in this package. At construction time, |
35 | -- elementary verifications are done to verify that the objects |
36 | -- are coherents, but some verifications which require complex |
37 | -- algorithmes (for example to check that a curve has not null |
38 | -- length or does not self-intersect) must be done before the |
39 | -- construction of the geometric objects. |
40 | |
41 | |
42 | uses MMgt, GeomAbs, TColStd, gp, TColgp |
43 | |
44 | is |
45 | |
46 | exception UndefinedDerivative inherits DomainError from Standard; |
47 | exception UndefinedValue inherits DomainError from Standard ; |
48 | |
49 | |
50 | |
51 | class Transformation; |
52 | |
53 | |
54 | deferred class Geometry; |
55 | |
56 | |
57 | deferred class Point; |
58 | class CartesianPoint; |
59 | |
60 | |
61 | deferred class Vector; |
62 | class Direction; |
63 | class VectorWithMagnitude; |
64 | |
65 | |
66 | class AxisPlacement; |
67 | |
68 | |
69 | deferred class Curve; |
70 | |
71 | class Line; |
72 | |
73 | deferred class Conic; |
74 | class Circle; |
75 | class Ellipse; |
76 | class Hyperbola; |
77 | class Parabola; |
78 | |
79 | deferred class BoundedCurve; |
80 | class BezierCurve; |
81 | class BSplineCurve; |
82 | class TrimmedCurve; |
83 | |
84 | class OffsetCurve; |
85 | |
86 | |
87 | end Geom2d; |
88 | |
89 | |
90 | |
91 | |