1 -- Created on: 1993-01-11
2 -- Created by: Christian CAILLET
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 class SelectUnion from IFSelect inherits SelectCombine
19 ---Purpose : A SelectUnion cumulates the Entities issued from several other
20 -- Selections (union of results : "OR" operator)
22 uses AsciiString from TCollection, EntityIterator, Graph
26 Create returns SelectUnion;
27 ---Purpose : Creates an empty SelectUnion
29 RootResult (me; G : Graph) returns EntityIterator;
30 ---Purpose : Returns the list of selected Entities, which is the addition
31 -- result from all input selections. Uniqueness is guaranteed.
33 Label (me) returns AsciiString from TCollection;
34 ---Purpose : Returns a text defining the criterium : "Union (OR)"