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From: "James Battat (jbattat AT wellesley DOT edu) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
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Subject: Re: [geda-help] pad dimensions shrink when footprint flips to other side of board
Date: Thu, 19 May 2016 20:31:28 +0900
References: <B070C707-2E82-421A-93CE-611F746D404B AT wellesley DOT edu> <CAJXU7q9o2WyMYzFOx=NesQ7LWEL0_jvvUkQ73afkGKsAy1cofA AT mail DOT gmail DOT com>
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> Do you have a design which reproduces the behaviour reliably which you =
can share with me (or any of the other developers).

Sure.  In a new pcb file:
1) Manually insert one 0805.fp element from the default library.
2) Flip the element to the back-side (push =93B=94 when mouse is over =
element).

The visible pad dimensions will be incorrect (though when you drag the =
part, the pad outline =97 thin red line on my machine =97 will be =
correct).

If you then save/close the file and re-open, the pad dimensions will be =
correct.

If you place the 0805.fp, then rotate, then flip to back side, the pad =
dimensions will be correct.  This is my current work-around to the bug.

James



> If you had a spare moment, perhaps you could have a go at finding a =
sequence of steps to reproduce (the simpler the better). =46rom what I =
recall, the bug does not happen with all parts, so the key may be =
finding one (and a particular rotation, given your notes above) to test =
with.
>=20
> Peter
>=20
>=20
> On 15 March 2016 at 00:15, James Battat (jbattat AT wellesley DOT edu) [via =
geda-help AT delorie DOT com] <geda-help AT delorie DOT com> wrote:
> Unexpected behavior / bug?
>=20
> If I place an element on the top side of the board, then flip it to =
the back side of the board (by pressing =93B"), the pad size shrinks.
>=20
> If, instead, I rotate the component by 90 degrees before flipping it =
to the backside, the pad shape is unchanged.  I can then rotate the =
component on the back-side without any change to the pad size.
>=20
> For what it's worth, when I click and drag the component on the back =
side (the component with the wrong pad shape), the red outline of the =
dragged object shows the correct pad dimensions.  Perhaps this implies a =
problem with the display (maybe gerbers are fine =97 haven=92t checked =
yet)?
>=20
> As an example, here=92s a link to a screen grab of a minimal example =
of this problem:
>    =
http://academics.wellesley.edu/Physics/jbattat/geda/issues/flipbug.html
>=20
> Ahhh, just before sending this email, I see that if I close PCB and =
then re-open the file, the problem goes away (i.e. all pads are the =
right size).  So I can work around it, but still, I figured you'd like =
to know (maybe you=92re already aware of all of this).
>=20
> I=92m using pcb v1.99z with GTK on debian.
>=20
> Thanks,
> James
>=20


--Apple-Mail=_8C88931C-9BE3-41DB-9268-2481416375D9
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	charset=windows-1252

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><div><blockquote type=3D"cite"><div =
dir=3D"ltr"><div><div>Do you have a design which reproduces the =
behaviour reliably which you can share with me (or any of the other =
developers).</div></div></div></blockquote><div><br></div><div>Sure. =
&nbsp;In a new pcb file:</div><div>1) Manually insert one 0805.fp =
element from the default library.</div><div>2) Flip the element to the =
back-side (push =93B=94 when mouse is over =
element).</div><div><br></div><div>The visible pad dimensions will be =
incorrect (though when you drag the part, the pad outline =97 thin red =
line on my machine =97 will be correct).</div><div><br></div><div>If you =
then save/close the file and re-open, the pad dimensions will be =
correct.</div><div><br></div><div>If you place the 0805.fp, then rotate, =
then flip to back side, the pad dimensions will be correct. &nbsp;This =
is my current work-around to the =
bug.</div><div><br></div><div>James</div><div><br></div><div><br></div><br=
><blockquote type=3D"cite"><div dir=3D"ltr"><div>If you had a spare =
moment, perhaps you could have a go at finding a sequence of steps to =
reproduce (the simpler the better). =46rom what I recall, the bug does =
not happen with all parts, so the key may be finding one (and a =
particular rotation, given your notes above) to test =
with.<br><br>Peter<br><br></div></div><div class=3D"gmail_extra"><br><div =
class=3D"gmail_quote">On 15 March 2016 at 00:15, James Battat (<a =
href=3D"mailto:jbattat AT wellesley DOT edu">jbattat AT wellesley DOT edu</a>) [via <a =
href=3D"mailto:geda-help AT delorie DOT com">geda-help AT delorie DOT com</a>] <span =
dir=3D"ltr">&lt;<a href=3D"mailto:geda-help AT delorie DOT com" =
target=3D"_blank">geda-help AT delorie DOT com</a>&gt;</span> =
wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex">Unexpected behavior / =
bug?<br>
<br>
If I place an element on the top side of the board, then flip it to the =
back side of the board (by pressing =93B"), the pad size shrinks.<br>
<br>
If, instead, I rotate the component by 90 degrees before flipping it to =
the backside, the pad shape is unchanged.&nbsp; I can then rotate the =
component on the back-side without any change to the pad size.<br>
<br>
For what it's worth, when I click and drag the component on the back =
side (the component with the wrong pad shape), the red outline of the =
dragged object shows the correct pad dimensions.&nbsp; Perhaps this =
implies a problem with the display (maybe gerbers are fine =97 haven=92t =
checked yet)?<br>
<br>
As an example, here=92s a link to a screen grab of a minimal example of =
this problem:<br>
&nbsp; &nbsp;<a =
href=3D"http://academics.wellesley.edu/Physics/jbattat/geda/issues/flipbug=
.html" rel=3D"noreferrer" =
target=3D"_blank">http://academics.wellesley.edu/Physics/jbattat/geda/issu=
es/flipbug.html</a><br>
<br>
Ahhh, just before sending this email, I see that if I close PCB and then =
re-open the file, the problem goes away (i.e. all pads are the right =
size).&nbsp; So I can work around it, but still, I figured you'd like to =
know (maybe you=92re already aware of all of this).<br>
<br>
I=92m using pcb v1.99z with GTK on debian.<br>
<br>
Thanks,<br>
James<br>
</blockquote></div><br></div>
</blockquote></div><br></body></html>=

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