1 -- Created on: 1993-03-08
2 -- Created by: Remi LEQUETTE
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.
17 -- Update: Frederic Maupas
22 ---Purpose: The package PTopoDS provides persistent classes to
23 -- store Topological Data Structures in Data Base.
25 -- The structure of this persistent topology is
26 -- similar to the transient topology (see its
27 -- documentation for more comprehension of this one).
28 -- But some differences occure:
30 -- * The class Model and derivatives disappear;
32 -- * The "free" information disappears, because a
33 -- TShape stored in the Data Base is always "frozen";
36 -- * The class HShape inherits from ExternShareable from
37 -- ObjMgt, so that an intance of HShape may be
38 -- shared by a TShape even if the HShape is not in the
41 -- * The class Shape1 inherits from Storable from
44 -- Note that the use of this topology is managed by
45 -- the package MgtTopoDS.
47 -- About the question of "Location", see the package
48 -- PTopLoc itself; about naming, referencing and
49 -- using persistent Shapes outsing the topological
50 -- world, see the package TopoDB.
56 TopAbs, -- basic enumerations : ShapeEnum, Orientation
57 PTopLoc, -- Persistent local coordinate systems
63 ---Category: Old version of Shape/TShape.
64 -- ============================
68 deferred class TShape;
70 deferred class TVertex;
103 class HArray1OfHShape instantiates HArray1 from PCollection
104 (HShape from PTopoDS);
107 ---Category: New version of Shape/TShape.
108 -- ============================
112 deferred class TShape1;
114 deferred class TVertex1;
116 deferred class TEdge1;
131 class HArray1OfShape1 instantiates HArray1 from PCollection
132 (Shape1 from PTopoDS);