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Subject: Re: [geda-user] A fileformat library
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From: John Griessen <john AT ecosensory DOT com>
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Date: Sat, 2 Jan 2016 20:13:03 -0600
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On 01/02/2016 06:04 PM, Roland Lutz wrote:
> the main thing which keeps me from defining PCB object types right now is that I haven't found a convincing data model for these yet.

It's the 3D physics model.  Connection needs to allow going vertical through vias to be robust.
Adding geometry will be a key underpinning to robustness.  Then it will be possible to add heuristic 3D DRCs
without "breaking the bank" of volunteer effort and enthusiasm available.