kicad-developers team mailing list archive

[Nick Østergaard <oe.nick@xxxxxxxxx>]

For some RF applications people would like to use curves for traces. So DRC
support for beizier/arcs would be nice here.

Den 14/09/2016 08.14 skrev "jp charras" <jp.charras@xxxxxxxxxx>:

> Le 14/09/2016 à 01:19, Tomasz Wlostowski a écrit :
> > On 14.09.2016 00:00, Cirilo Bernardo wrote:
> >> I think it would be nice to support Bezier curves but aside from adding
> >> support for editing those curves, I think we need a good enough 2D
> >> geometry kernel so that we can improve zone outlines and perhaps
> >> even allow tracks to be straight, arc, or Bezier curve. In general
> though
> >> I think good support for "PolyLine" would be of more general use; after
> >> all any 2D Bezier curve can be easily approximated with a series of
> >> circular arcs (which a Polyline can do).
> >
> > Cirilo, JP,
> >
> > I agree we need copper layer arc support. I'm reluctant to add Bezier
> > curves unless they are approximated as polylines because of the
> > complexity of necessary DRC functions. Writing an accurate arc-to-arc or
> > arc-to-segment collision/distance check is already quite difficult.
> >
> > Besides, what would be the use of such curves for PCB design other than
> > fancy graphics (silkscreen, etc)?
> >
> > Tom
>
> AFAIK, it was never intended to be used on copper layers, only for fancy
> graphics.
> It is not yet in use because the cost to use Bezier curves is high
> (editor, locate functions ...)
> and the benefit is low.
>
>
> --
> Jean-Pierre CHARRAS
>
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