On Wed, Sep 14, 2016 at 7:44 PM, Nick Østergaard <[email protected]> wrote:
> For some RF applications people would like to use curves for traces. So > DRC support for beizier/arcs would be nice here. > > That would be possible with polyline and would avoid the high computational cost of finding an intersection with a Bezier (or any spline equation). - Cirilo > Den 14/09/2016 08.14 skrev "jp charras" <[email protected]>: > >> 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 >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~kicad-developers >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~kicad-developers >> More help : https://help.launchpad.net/ListHelp >> >
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