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From:	"Chris Smith (space DOT dandy AT icloud DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject:	Re: [geda-user] The nature of gEDA layers
Message-id:	<2E50874E-7A17-4295-B95E-8A626EE9727B@icloud.com>
Date:	Sat, 30 Jan 2016 19:32:45 +0000
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Reply-To:	geda-user AT delorie DOT com

Yes, I wasn't trying to say otherwise. PCB is a 2D layout program and it seems to me that the suggestions so far are using complex structures to try and represent a third dimension that PCB has no other use for. All I was trying to say, is why not provide a generic mechanism for the user to say 'at this 2D location layers X, Y and Z are connected'. PCB doesn't need to know how or why the connection exists and can get on with its job of 2D routing. 

Chris

Sent from my iPad

> On 30 Jan 2016, at 16:03, DJ Delorie <dj AT delorie DOT com> wrote:
> 
> Despite some folks dreams to the contrary, a layout program is not a
> generic CAD program.  It has to have *some* understanding of what the
> layout *means* in order to be useful to the designer.  Otherwise you
> might as well use a paint program.

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