[cad-linux-dev] Re: uber-converter layer names
- From: "Jim parker" <jparker@xxxxxxxxxxxx>
- To: <cad-linux-dev@xxxxxxxxxxxxx>, <bruno@xxxxxxxxxx>
- Date: Fri, 20 Aug 2004 13:01:22 -0400
Use an index list, so you may have a one-to-Many relationship, and you are =
not changing either the entity list nor the layer list when modifying =
memebers in a layer.
Entity List.entity_id *-> LayerIndex <--- Layer_list.layer_id
cheers,
Jim Parker
H. James Parker
Naval Architect
Gibbs and Cox, Inc.
office) 703-416-3625
fax) 703-416-3679
jparker@xxxxxxxxxxxx
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>>> bruno@xxxxxxxxxx 8/20/2004 12:28:09 PM >>>
On Thu 19-Aug-2004 at 14:27 -0500, Eric Wilhelm wrote:
> With that said, we are still going to have to have a "name:"=20
> attribute (which will appear as the layer name in autocad,=20
> pythoncad, etc.) And, to be able to rename layers without messing=20
> with the entities, we must use a numeric ID for the layer (which,=20
> yes, is related to the layer filename) where that numeric ID is=20
> stored in each entity.
Are you sure about this? It is a 'layer of indirection' that is=20
sometimes useful, but not always. Won't it be confusing having a=20
layer with "ID: 5" but "name: 6"?
The renaming a layer problem can be solved by editing all the=20
entities and changing the name there - Just the same as moving a=20
bunch of entities or changing their colour.
--=20
Bruno
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