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Message-ID:	<55089216.5040703@ecosensory.com>
Date:	Tue, 17 Mar 2015 15:44:06 -0500
From:	John Griessen <john AT ecosensory DOT com>
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To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] pcb alternatives
References:	<CAHLh21Cdm=YZuqCQ+gCHSviJquahr6cnAQ-VBLR4BSs-nfHOig AT mail DOT gmail DOT com> <CAOFvGD4+4bHXNYLvePi70wb_1A4=dQgb_Ov3xBghoKbXQUsSGA AT mail DOT gmail DOT com> <5508413E DOT 4000405 AT ecosensory DOT com> <C2997FC5-EE8B-47E4-A8D5-24B6D22B2D64 AT noqsi DOT com> <20150317182617 DOT 22729 DOT qmail AT stuge DOT se>
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Reply-To:	geda-user AT delorie DOT com

On 03/17/2015 01:26 PM, Peter Stuge wrote:
> Which elementary objects would you use instead of the current
> predefined ones, and what would be a couple of concrete advantages?

These are all on top of the low level John D.  already mentioned:

1.  A circuit path that has a netlist attribute and physics attribs  ---->  it is defined even when floating
	free of any pad.  -->  Setup of keepouts for autorouting, or manual power routing.
	-->  Copper thickness defined for sims, compat. checks.

2.  A pad ring that has a netlist attribute attached independent of being in a pad stack,
	and has a definition of being on a layer -->  more direct and easier to
	parse in the code ---8-)--> buried vias can be implemented and simulations can
	extract capacitance data from physical shape without assumptions.

3.  a non-conductive board material primitive with physical attribs  --->  simulation
	and compatibility checks of subcircuit layouts and
	accurate 3D models become possible

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