X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=Jvensv8N038b6YUhXx7s3EZAqvpP6gcMkvP+ZMaVo9I=;
        b=ceBH4Pc1GOKNg4XxK37+wvz+IgDaSqKUVOb4rGS2oFagjDOPGi+Dri+vdlmR3196/Q
         SAixfESJEI9IyywnWn/Z2igCVHq9GcAAuBozl4pVObFr3enJG0RZHSoR/hzzR71Jhspy
         f7KZw8u4RnmQwrGHWWgfRkBxbVAftyeOWqR+DKEr07vdoFfNTc7tDtHfQfaz2ePExTeI
         fOyNEAErtpUIwXVS0QC8v10e47Q40YxCznp6zN4moYBX9SoOjnA7luOuD0XMAeSyHx27
         532n7hDPc+9SOVxSepEFOqoKVJ2Ubcushj5z7asFDVopQU9319MJoVeGyqy48G0lvW6L
         j5tA==
MIME-Version: 1.0
X-Received: by 10.152.181.5 with SMTP id ds5mr1635783lac.60.1439826561407;
 Mon, 17 Aug 2015 08:49:21 -0700 (PDT)
In-Reply-To: <201508170550.t7H5oW1T021206@envy.delorie.com>
References: <CAFx0xxgpWa+Ku-B+OBBCiY4gagx3gtcSUCC5Mk1RM5vqK4u94Q AT mail DOT gmail DOT com>
	<201508160552 DOT t7G5qBPo025284 AT envy DOT delorie DOT com>
	<CAFx0xxj4B2ByhKWhU7BSGjyUhkD_xLA-3wG-u2wB21MLqLbq4g AT mail DOT gmail DOT com>
	<201508170550 DOT t7H5oW1T021206 AT envy DOT delorie DOT com>
Date: Mon, 17 Aug 2015 09:49:21 -0600
Message-ID: <CAFx0xxijRCmD6j1XGghhHCQhBL58xcJbHCGe1bJ9y4aN6fX3Kw@mail.gmail.com>
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>
To: geda-user AT delorie DOT com
Content-Type: multipart/alternative; boundary=001a11340d7abb1f0b051d83beaa
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

--001a11340d7abb1f0b051d83beaa
Content-Type: text/plain; charset=UTF-8

Maybe an example will help.  Take a standard 805 footprint from one of the
packaged libraries.

Element["" "Standard SMT resistor, capacitor etc" "" "0805" 2850.00mil
2600.00mil -31.50mil -31.50mil 0 100 ""]
(....

)

My understanding is the origin is located at (2850.00mil,2600.00mil).  And
the reference designator is positioned at (-31.50mil,-31.50mil) relative to
the origin.  How does one interpret these (2850.00mil,2600.00mil) numbers
for the
origin?

I understand the purpose of the diamond origin - and I can change the
location of the origin graphically - but what do
the 'coordinates' mean?

Dave

On Sun, Aug 16, 2015 at 11:50 PM, DJ Delorie <dj AT delorie DOT com> wrote:

>
> > But now I'm curious, what does a 0,0 value for the origin actually
> > mean?  Relative to what?
>
> The footprint's origin is not "relative" to anything else, it's what
> everything else is relative to.
>
> When you place a footprint, the origin of the footprint is placed at
> the point where the crosshair is when you insert it.  I.e. you can
> think of this as the "paste point" too.
>

--001a11340d7abb1f0b051d83beaa
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div><div><div><div><br>Maybe an example will help.=C2=A0 =
Take a standard 805 footprint from one of the packaged libraries. <br></div=
><br>Element[&quot;&quot; &quot;Standard SMT resistor, capacitor etc&quot; =
&quot;&quot; &quot;0805&quot; 2850.00mil 2600.00mil -31.50mil -31.50mil 0 1=
00 &quot;&quot;]<br>(....<br><br>)<br></div><br>My understanding is the ori=
gin is located at (2850.00mil,2600.00mil).=C2=A0 And the reference designat=
or is positioned at (-31.50mil,-31.50mil) relative to the origin.=C2=A0 How=
 does one interpret these (2850.00mil,2600.00mil) numbers for the <br></div=
><div>origin?<br><br></div><div>I understand the purpose of the diamond ori=
gin - and I can change the location of the origin graphically - but what do=
 <br>the &#39;coordinates&#39; mean?<br></div><br></div>Dave<br></div><div =
class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sun, Aug 16, 2015 a=
t 11:50 PM, DJ Delorie <span dir=3D"ltr">&lt;<a href=3D"mailto:dj AT delorie DOT c=
om" target=3D"_blank">dj AT delorie DOT com</a>&gt;</span> wrote:<br><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex"><span class=3D""><br>
&gt; But now I&#39;m curious, what does a 0,0 value for the origin actually=
<br>
&gt; mean?=C2=A0 Relative to what?<br>
<br>
</span>The footprint&#39;s origin is not &quot;relative&quot; to anything e=
lse, it&#39;s what<br>
everything else is relative to.<br>
<br>
When you place a footprint, the origin of the footprint is placed at<br>
the point where the crosshair is when you insert it.=C2=A0 I.e. you can<br>
think of this as the &quot;paste point&quot; too.<br>
</blockquote></div><br></div>

--001a11340d7abb1f0b051d83beaa--