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Date:	Sun, 6 Apr 2014 16:44:42 +0400
Message-ID:	<CAG4ve9+d1G=3bi6Un2kq_vNvrY9UCjjQS-BxFvdrQoXO5igV0Q@mail.gmail.com>
Subject:	Re: [geda-user] Cooper arcs in footprint
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> I think gerber formats supports arcs.
>

Right.

One problem with arcs is: If we have stretched arcs, DRC may be much
> more difficult -- I have to admit that I have no idea how to test
> stretched arcs for intersection with other elements (fast).


I do not see the problem...

What the stretched arcs? Parts of ellipse?
How I place ellipse part in pcb?


> Another
> problem can be autorouting when we have arcs on the board -- for
> geometrical and topological routers there should be some difficulties.
>

Why autorouting with arc in footprint more difficult then with arc added on
cooper layer manually?
Hole pad is circle - example of complete arc.

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><br>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">I think gerber formats su=
pports arcs.<br>
</blockquote><div><br>Right. <br><br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);=
padding-left:1ex">
One problem with arcs is: If we have stretched arcs, DRC may be much<br>
more difficult -- I have to admit that I have no idea how to test<br>
stretched arcs for intersection with other elements (fast).</blockquote><di=
v><span id=3D"result_box" class=3D"" lang=3D"en"><span class=3D""><br>I do =
not see</span> <span class=3D"">the problem...<br></span></span><br><span i=
d=3D"result_box" class=3D"" lang=3D"en"><span class=3D"">What the stretched=
 arcs? Parts of ellipse?<br>
</span></span></div><div><span id=3D"result_box" class=3D"" lang=3D"en"><sp=
an class=3D"">How I place ellipse part in pcb?<br></span></span></div><div>=
=A0 <br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
 Another<br>
problem can be autorouting when we have arcs on the board -- for<br>
geometrical and topological routers there should be some difficulties.<br><=
/blockquote><div>=A0</div></div>Why autorouting with arc in footprint more =
difficult then with arc added on cooper layer manually?<br></div><div class=
=3D"gmail_extra">
Hole pad is circle - example of complete arc.<br></div></div>

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