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Date: Fri, 11 May 2018 09:21:21 +0200 (CEST)
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To: "michalwd1979 (michalwd1979 AT o2 DOT pl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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From: gedau AT igor2 DOT repo DOT hu
Subject: Re: Odp: Re: [geda-user] Opengl PCB and mainline PCB - pcb-rnd
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Hello Michael,

On Tue, 8 May 2018, michalwd1979 (michalwd1979 AT o2 DOT pl) [via geda-user AT delori=
e.com] wrote:

>RU200 is really the un-even Wilkinson splitter. The layout of it was given
>to me in a dxf format, so I had to create a scaled background image and=C2=
=A0
>then draw polygons on it. Then the polygons were converted to a footprint =
or

Btw, we have a hpgl import plugin. Most CADs that can save in dxf can also=
=20
plot in hpgl. We don't yet deal with polygons, but it'd be easy to add and=
=20
then no redraw needed for such cases.

<snip>

>As for vias that was a bit boring but not to much... The vias are the last
>thing placed on the pcb so I had a nice felling of work-ending-soon when
>placing them :-).
>I thing that via-lines would be really useful only if the vias would be
>configurable in some way: connect using thermal X to polygon Y, with
>clearance Z or something. For example You create a via with all the
>specification needed and then "extend" it to a via-line. Was that Yours
>idea? If yes then I would really like it.

Yes. In pcb-rnd terminology your via is really a padstack, and a padstack=
=20
has a prototype (that describes the geometry). So for a via-line, you'd=20
select a padstack prototype and all vias on that line would be using that.

Just like multiple vias can share the same prototype today, multiple=20
via-lines could share the same prototype. This means if you change the=20
geomerty of the prototype, that immediately affects all instances.

Another extra parameter for the via-line would be the spacing between vias=
=20
and how to enforce it (e.g. make sure endpoints have vias and tune the=20
spacing to meet that, or rather keep the spacing as specified and don't=20
mind if the second endpoint won't have a via).

I also plan to have via-polygons - same story as via-lines: an evenly=20
spaced grid of vias over an area specified by a virtual polygon. Would be=
=20
useful for those via grids under center pads of QFNs.



Btw, any news on the dash-freq test on your system? We really need to know=
=20
the result to be able to go on with narrowing down what's causes the=20
rendering slowness there.

Regards,

Igor2
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