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Date:	Sun, 16 Aug 2015 10:06:32 -0600
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Subject:	Re: [geda-user] PCB footprints - what is the best way to change
	origin location on existing footprint?
From:	"Dave Williams (dave DOT williams DOT lists AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Yes - you can visually reset the origin by cut/paste and re-saving the
footprint.  FWIW,
I tried different values for  'mark_x' and 'mark_y' in the footprint file.
I did not see the
footprint origin change position.  I understand all other pins and
footprint features are
relative to this origin.  But now I'm curious, what does a 0,0 value for
the origin actually
mean?  Relative to what?

Thanks,

Dave

On Sat, Aug 15, 2015 at 11:52 PM, DJ Delorie <dj AT delorie DOT com> wrote:

>
> > Assuming an existing PCB footprint.  Is the only way to change
> > the origin or diamond location (mark_x and mark_y) is by making
> > changes to the footprint file?
>
> The origin is the "0,0" point that all the other parts of the
> footprint are referenced to, so it's actually hard to change the
> footprint file directly.
>
> You can move a footpring in pcb itself by pasting the footprint into a
> blank layout, selecting it, and cutting it (the position of the cursor
> when you cut is the "mark" for the footprint), and "save buffer
> elements to file".
>

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<div dir=3D"ltr"><div><div><div>Yes - you can visually reset the origin by =
cut/paste and re-saving the footprint.=C2=A0 FWIW, <br>I tried different va=
lues for=C2=A0 &#39;mark_x&#39; and &#39;mark_y&#39; in the footprint file.=
=C2=A0 I did not see the <br>footprint origin change position.=C2=A0 I unde=
rstand all other pins and footprint features are <br>relative to this origi=
n.=C2=A0 But now I&#39;m curious, what does a 0,0 value for the origin actu=
ally <br>mean?=C2=A0 Relative to what?=C2=A0 <br></div></div></div><div><br=
></div><div>Thanks,<br></div><div><br></div><div>Dave<br></div></div><div c=
lass=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sat, Aug 15, 2015 at=
 11:52 PM, DJ Delorie <span dir=3D"ltr">&lt;<a href=3D"mailto:dj AT delorie DOT co=
m" target=3D"_blank">dj AT delorie DOT com</a>&gt;</span> wrote:<br><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex"><span class=3D""><br>
&gt; Assuming an existing PCB footprint.=C2=A0 Is the only way to change<br=
>
&gt; the origin or diamond location (mark_x and mark_y) is by making<br>
&gt; changes to the footprint file?<br>
<br>
</span>The origin is the &quot;0,0&quot; point that all the other parts of =
the<br>
footprint are referenced to, so it&#39;s actually hard to change the<br>
footprint file directly.<br>
<br>
You can move a footpring in pcb itself by pasting the footprint into a<br>
blank layout, selecting it, and cutting it (the position of the cursor<br>
when you cut is the &quot;mark&quot; for the footprint), and &quot;save buf=
fer<br>
elements to file&quot;.<br>
</blockquote></div><br></div>

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