Re: gEDA-user: pcb, mm rounding issue

[Ineiev <ineiev@xxxxxxxxxxx>]

Hi, Stefan;

On Sun, Oct 5, 2008 at 11:21 PM, Stefan Salewski <mail@xxxxxxxxxxxx> wrote:
> I have 0.5 mm grid size, 0.25 mm line width and 0.25 mm "Minimum copper
> spacing" in Preferences/Design Rule Checking.
>
> It was clear for me that this can cause problems -- indeed it does.
> Sometimes it is not possible to draw copper lines on adjoining grid
> points if Settings/Auto Enforce DRC cleararance in enabled.
>
> Setting "Minimum copper spacing" to 0.249 mm fixes it.
> If we decrease all values entered in Preferences/Design rule checking
> minimal (i.e. *0.999) this rounding issue should be fixed.

Won't it miss DRC errors? I'd prefer false alarms.

Probably the most radical way to fix this is to make LocationType double;
of course it is not a trivial modification and I can't predict how it would
change the speed.

Best regards,
Ineiev


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