Re: gEDA-user: Random thoughts on the future interface of PCB

[Duncan Drennan <duncan.drennan@xxxxxxxxx>]

>  I've looked at various commercial boards recently, and it would appear
>  that many use negative layers to draw tracking. High power stuff,
>  where practically everything is copper, just with some isolation
>  between regions. The complexity of the polygons which make up these
>  traces would be too prohibitive to use PCB's normal polygon tool.
>
>  They _look_ as if someone has drawn negagtive traces to split up a
>  plane. should we support that?

Negative layers would be awesome. Having the mask as an actual
negative layer would also be great, and allow some custom things to be
done on with the mask (e.g. exposing copper strips along the edge for
chassis/shielding connections)


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