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1 | -- Created on: 1997-02-05 |
2 | -- Created by: Alexander BRIVIN |
3 | -- Copyright (c) 1997-1999 Matra Datavision |
4 | -- Copyright (c) 1999-2012 OPEN CASCADE SAS |
5 | -- |
6 | -- The content of this file is subject to the Open CASCADE Technology Public |
7 | -- License Version 6.5 (the "License"). You may not use the content of this file |
8 | -- except in compliance with the License. Please obtain a copy of the License |
9 | -- at http://www.opencascade.org and read it completely before using this file. |
10 | -- |
11 | -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
12 | -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
13 | -- |
14 | -- The Original Code and all software distributed under the License is |
15 | -- distributed on an "AS IS" basis, without warranty of any kind, and the |
16 | -- Initial Developer hereby disclaims all such warranties, including without |
17 | -- limitation, any warranties of merchantability, fitness for a particular |
18 | -- purpose or non-infringement. Please see the License for the specific terms |
19 | -- and conditions governing the rights and limitations under the License. |
20 | |
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21 | |
22 | |
23 | class Instancing from Vrml |
24 | |
25 | ---Purpose: defines "instancing" - using the same instance of a node |
26 | -- multiple times. |
27 | -- It is accomplished by using the "DEF" and "USE" keywords. |
28 | -- The DEF keyword both defines a named node, and creates a single |
29 | -- instance of it. |
30 | -- The USE keyword indicates that the most recently defined instance |
31 | -- should be used again. |
32 | -- If several nades were given the same name, then the last DEF |
33 | -- encountered during parsing "wins". |
34 | -- DEF/USE is limited to a single file. |
35 | uses |
36 | |
37 | AsciiString from TCollection |
38 | |
39 | is |
40 | |
41 | Create ( aString : AsciiString from TCollection ) |
42 | returns Instancing from Vrml; |
43 | |
44 | ---Purpose: Adds "DEF <myName>" in anOStream (VRML file). |
45 | DEF ( me; anOStream: in out OStream from Standard) returns OStream from Standard; |
46 | ---C++: return & |
47 | |
48 | ---Purpose: Adds "USE <myName>" in anOStream (VRML file). |
49 | USE ( me; anOStream: in out OStream from Standard) returns OStream from Standard; |
50 | ---C++: return & |
51 | |
52 | fields |
53 | |
54 | myName : AsciiString from TCollection; -- Name using DEF/USE for a node |
55 | |
56 | end Instancing; |
57 | |