Re: gEDA-user: Turning off gerber Poly Fill for square pads

[Thomas Olson <tolson@xxxxxxxxxx>]

On Thursday 20 August 2009 06:28:39 pm Dan McMahill wrote:
> Thomas Olson wrote:
> > On Thursday 20 August 2009 02:51:41 pm DJ Delorie wrote:
> >>> The issue is that isolations programs like CopperCAM and GCAM
> >>> ignore the G36 G37 commands and thus draw the pad as 4 traces
> >>> in a sqaure shape and then isolating the inside of the pad because
> >>> it thinks they are traces.
> >>>
> >>> They draw those four lines using the last defined aperature so the
> >>> pad ends up being too large besides.
> >>
...
>
> have you tried the gerbv export command?  I don't know what it does for
> polygons but in general I think it produces a simpler gerber output than
> what you fed into it.
>

Thanks for the idea. I just tried it, files with real R apertures for square 
pads and with G36-G37 blocks defining square pads.

Gerbv exports G36 polygons when they are input as G36 polygons.
Gerbv will export R apertures when they are input as R apertures.

Viewer programs have no way of knowing that a defined polygon is a pad.
It just knows it is a polygon.

Now if some of these other programs worked as good as gerbv.
I found a couple programs where a gerber trace will isolate through
the polygon instead of becoming part of it. Hmm!





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