1 -- Created on: 1993-03-24
3 -- Copyright (c) 1993-1999 Matra Datavision
4 -- Copyright (c) 1999-2014 OPEN CASCADE SAS
6 -- This file is part of Open CASCADE Technology software library.
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.
14 -- Alternatively, this file may be used under the terms of Open CASCADE
15 -- commercial license or contractual agreement.
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
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.
42 uses MMgt, GeomAbs, TColStd, gp, TColgp
46 exception UndefinedDerivative inherits DomainError from Standard;
47 exception UndefinedValue inherits DomainError from Standard ;
54 deferred class Geometry;
61 deferred class Vector;
63 class VectorWithMagnitude;
79 deferred class BoundedCurve;