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Date: Thu, 12 May 2016 16:35:29 +0100
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Subject: Re: [geda-user] PCB polygon islan clearing doesn't seem to work
From: "Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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I had a "pours" branch (which hasn't been maintained recently), which used
to fix the connectivity issues.

Try a test "full" polygon, split into two pieces with a clearing track.
Place a component on each side, and connect legs / pads to the polygon
(e.g. with a thermal).

Hit "f" on one of the pads, and see if it thinks the other side is
connected... for me (my current HEAD), it mistakenly thinks there is a
connection.

If there is interest, I could revive the "pours" branch to provide correct
connectivity checking for "full" polygons. At the time I implemented it
though, I don't think I tied the behaviour to the "full" flag, and instead
had it affecting _ALL_ polygons... which is less good.

Peter

On 12 May 2016 at 11:01, michalwd1979 (michalwd1979 AT o2 DOT pl) [via
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

>
> >
> > The small island clearing feature does not work.
> >
> >
> > I would suggest NOT using "full" polygons, if you have enabled that, as
> you will find that PCB also cannot track connectivity correctly if the
> polygon is cut into pieces. Instead, use the default option of non "full"
> polygons, and let PCB keep only the largest polygon piece.>
> >
> > You may need to add multiple polygons to cover the areas you want.
> > Peter
> >
> >
>
> Peter is is apply also to Yours opengl pcb version? For me full and non
> full polygons works OK with pcb from:
> http://repo.or.cz/w/geda-pcb/pcjc2.git
> Michael Widlok.
>
>
>
>

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<div dir=3D"ltr"><div><div><div>I had a &quot;pours&quot; branch (which has=
n&#39;t been maintained recently), which used to fix the connectivity issue=
s.<br><br></div>Try a test &quot;full&quot; polygon, split into two pieces =
with a clearing track. Place a component on each side, and connect legs / p=
ads to the polygon (e.g. with a thermal).<br><br></div>Hit &quot;f&quot; on=
 one of the pads, and see if it thinks the other side is connected... for m=
e (my current HEAD), it mistakenly thinks there is a connection.<br><br></d=
iv><div>If there is interest, I could revive the &quot;pours&quot; branch t=
o provide correct connectivity checking for &quot;full&quot; polygons. At t=
he time I implemented it though, I don&#39;t think I tied the behaviour to =
the &quot;full&quot; flag, and instead had it affecting _ALL_ polygons... w=
hich is less good.<br><br></div><div>Peter<br></div></div><div class=3D"gma=
il_extra"><br><div class=3D"gmail_quote">On 12 May 2016 at 11:01, michalwd1=
979 (<a href=3D"mailto:michalwd1979 AT o2 DOT pl">michalwd1979 AT o2 DOT pl</a>) [via <a =
href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] <span dir=
=3D"ltr">&lt;<a href=3D"mailto:geda-user AT delorie DOT com" target=3D"_blank">ged=
a-user AT delorie DOT com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
<span class=3D""><br>
&gt;<br>
&gt; The small island clearing feature does not work.<br>
&gt;<br>
&gt;<br>
&gt; I would suggest NOT using &quot;full&quot; polygons, if you have enabl=
ed that, as you will find that PCB also cannot track connectivity correctly=
 if the polygon is cut into pieces. Instead, use the default option of non =
&quot;full&quot; polygons, and let PCB keep only the largest polygon piece.=
&gt;<br>
&gt;<br>
&gt; You may need to add multiple polygons to cover the areas you want.<br>
&gt; Peter<br>
&gt;<br>
&gt;<br>
<br>
</span>Peter is is apply also to Yours opengl pcb version? For me full and =
non full polygons works OK with pcb from: <a href=3D"http://repo.or.cz/w/ge=
da-pcb/pcjc2.git" rel=3D"noreferrer" target=3D"_blank">http://repo.or.cz/w/=
geda-pcb/pcjc2.git</a><br>
Michael Widlok.<br>
<br>
<br>
<br>
</blockquote></div><br></div>

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