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Date:	Sun, 15 May 2016 20:23:12 +0100
From:	"M. J. Everitt (m DOT j DOT everitt AT iee DOT org) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Differential pair support
References:	<CAKakQccEbYhkhWZ1fO9EUiWjuZygctwfUcYFOtUJ5o=hdOWJPQ AT mail DOT gmail DOT com> <57388E01 DOT 5090106 AT xs4all DOT nl>
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Reply-To:	geda-user AT delorie DOT com

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On 15/05/16 15:56, Bert Timmerman (bert DOT timmerman AT xs4all DOT nl) [via
geda-user AT delorie DOT com] wrote:
> Stephen Ecob (stephen DOT ecob AT sioi DOT com DOT au) [via geda-user AT delorie DOT com]
> wrote:
>> Here's a basic implementation of differential pair support.
>>
>> The code in "differential.c" needs to be placed inside action.c
>>
>> The code is run by typing
>>
>> :MakeDifferential(TargetWidth,gap)
>>
>> where TargetWidth is the width of lines to transform and gap is the
>> thickness of the gap to insert.
>>
>> The pictures show a 19 mil trace that is transformed into a
>> differential pair with thickness 7 mil and gap 5 mil.  This was done
>> by typing
>>
>> :MakeDifferential(19mil,5mil)
>>
>> Caveats:
>>
>> * Doesn't support undo properly. Back up your work before running.
>>
>> * Doesn't work well with straight line intersections, it creates gaps
>> and overhangs at the intersections. The workaround is to use arcs for
>> changing direction, as it handles line to arc intersections
>> beautifully.
>>
>> Enjoy!
>>  =20
> Hi all,
>
> I created a topic branch for this "plugin": home/bert/differential
>
> http://git.geda-project.org/pcb/commit/?h=3Dhome/bert/differential&id=3D=
715c6c8f94ffca04eaa147782c58baa47e772222
>
>
> Happy testing ;-)
>
> Kind regards,
>
> Bert Timmerman.
Good plan .. I'll clone it, and work on the straight-line join fixes
there .. Thanks Bert.


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