kicad-developers team mailing list archive

[Lorenzo Marcantonio <l.marcantonio@xxxxxxxxxxxx>]

On Mon, Jun 30, 2014 at 12:10:30PM +0200, jp charras wrote:
> The most important change is using mm and 4.5 format instead of inches
> and 3.4 format.
> This is mandatory, because the 3.4 format (coming from old pcbnew
> internal units) creates truncations in coordinates.

I did the mm high resolution backend years ago... maybe it just was forgotten:P

> Serious issues in polygons which can appear self-intersecting after
> truncation.
> After some tests with GC-Prevue and using some test boards, polygons
> which were self-intersecting in 3.4 old format are now not
> self-intersecting.

So the self intersection was a rounding issue? Interesting

-- 
Lorenzo Marcantonio
Logos Srl