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Date:	Fri, 1 Jul 2016 07:34:26 -0400
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Subject:	Re: [geda-user] Prevent PCB Designer to change my thoughts
From:	"Jason White (whitewaterssoftwareinfo AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Well, you might just have to shift the different line segments by 0.01mm or
so to prevent the ends from overlaping. If I recall correctly the internal
units are nanometers

On Friday, July 1, 2016, Ji=C5=99=C3=AD =C4=8Cejka (jirkacejka AT gmail DOT com) [=
via
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

> Dne 1.7.2016 v 04:46 DJ Delorie napsal(a):
>
>> First off, there's no such thing as "gEDA PCB Designer".  It's just
>> "gEDA pcb".  Unless you mean Allegro or OrCAD, which refer to their
>> tools as "Allegro PCB Designer" and "OrCAD PCB Designer".
>>
>
> Thanks for clarification. I borrowed that name from my Debian instalation
> to better distinguish the board itself and the app. My mistake.
>
> Second, yes, PCB will merge traces when loaded, if the traces are
>> exactly colinear and have the same characteristics (width, clearance).
>> This is intentional.
>>
>
> So, where can be the rub that pcb merge only some and not others then? Ca=
n
> the cause be related to rounding and unit converting inside that dxf2pcb
> tool? I did not mention that all guides were the same at the time I've
> drawn them in CAD and it looks the same in converted PCB file.
>
> So I see two possible conclusions. The gEDA pcb is so exact in recognizin=
g
> which line will be merged from it's pieces and dxf2pcb tool have rounding=
 /
> unit converting dispersion or the I've discovered a bug in pcb. Who knows=
?
>


--=20
Jason White

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Well, you might just have to shift the different line segments by 0.01mm or=
 so to prevent the ends from overlaping. If I recall correctly the internal=
 units are nanometers<br><br>On Friday, July 1, 2016, Ji=C5=99=C3=AD =C4=8C=
ejka (<a href=3D"mailto:jirkacejka AT gmail DOT com">jirkacejka AT gmail DOT com</a>) [vi=
a <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] &lt;<=
a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>&gt; wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex">Dne 1.7.2016 v 04:46 DJ Delorie napsal(=
a):<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
First off, there&#39;s no such thing as &quot;gEDA PCB Designer&quot;.=C2=
=A0 It&#39;s just<br>
&quot;gEDA pcb&quot;.=C2=A0 Unless you mean Allegro or OrCAD, which refer t=
o their<br>
tools as &quot;Allegro PCB Designer&quot; and &quot;OrCAD PCB Designer&quot=
;.<br>
</blockquote>
<br>
Thanks for clarification. I borrowed that name from my Debian instalation t=
o better distinguish the board itself and the app. My mistake.<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Second, yes, PCB will merge traces when loaded, if the traces are<br>
exactly colinear and have the same characteristics (width, clearance).<br>
This is intentional.<br>
</blockquote>
<br>
So, where can be the rub that pcb merge only some and not others then? Can =
the cause be related to rounding and unit converting inside that dxf2pcb to=
ol? I did not mention that all guides were the same at the time I&#39;ve dr=
awn them in CAD and it looks the same in converted PCB file.<br>
<br>
So I see two possible conclusions. The gEDA pcb is so exact in recognizing =
which line will be merged from it&#39;s pieces and dxf2pcb tool have roundi=
ng / unit converting dispersion or the I&#39;ve discovered a bug in pcb. Wh=
o knows?<br>
</blockquote><br><br>-- <br>Jason White<br>

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