Re: gEDA-user: pcb crooked traces

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Thu, 2010-10-07 at 07:09 -0400, gene glick wrote:
> I hope the attachment comes through.  If not, I'll post it somewhere.
> 
> I cannot get rid of the jagged diagonal lines on my design.  There's 
> lots of them.  The picture shows a couple of examples.  I've tried 
> different grid sizes, line widths, but nothing fixes the problem. 
> Redrawing them in order to eliminate any sections does not help.  On 
> PCB, it shows at some zoom levels but not others.  It is in the gerbers 
> as well and it is in the photo-mode picture I attached.

If the tracks select as a single piece, it is just a rendering artefact
due to the line not being _exactly_ 45 degrees. The gerber plot might be
better when viewed in "High quality" mode in gerbv.

PCB, and the lower quality gerbv modes don't render anti-aliased lines,
so this is likely the source of what you are seeing. The fact it changes
with zoom level also leads me to suspect the same.

Regards,

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)



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