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Date: Thu, 20 Nov 2014 18:42:08 +0100
From: Milan Prochac <milan AT prochac DOT sk>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] PCB and 3D Views
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On 20. 11. 2014 17:59, Kai-Martin Knaak wrote:
> Milan Prochac wrote:
>
>> Aligned with current  master/HEAD, there are some sample models,
>> documentation (chapter in pcb.pdf) and small example, which should work
>> out-of box, with result like this:
>> http://pcb.bastl.sk/static/OpenSCAD.png
> Really curious:
> How does this approach communicate the identity, position and orientation
> of components?

Identity: the footprint name should be stored in the Description field 
(as far i remember, gsch2pcb does this), model name should have the same 
name as footprint (extensions are removed/added)
Position: it is stored in the PCB layout
Orientation: the rotation is calculated from position of the first 
pin/pad on component instantiated on board and from position of first 
pin/pad in footprint file (footprint name should be stored in 
Description field).

This method does not touch the existing codebase and internal 
structures. Having the rotation stored in the PCB layout, the filter 
code can be reduced by one half...

Milan

> ---<)kaimartin(>---