I think it's just a UI/usability thing. Drawing a new section of zone intersecting the first is a significantly easier way to add area to a zone than the alternative (which as far as I'm aware is just to "Create Corner" a bunch of times and drag the corners).
TBH I've never personally needed overlapping zones of the same net, layer, and priority myself, though - I'm sure if I ever encountered such a need, I'd find it very annoying. ;) Perhaps a mode to select the behavior would be useful. Most graphics applications have this for things like selections - drawing a selection can usually replace, add to, or subtract from the existing selection. Something like that for zones could be very useful, IMO, and it's a familiar UI element to anyone who's done graphics editing. -- Chris On Tue, Jan 12, 2016 at 05:28:44PM +0100, Tomasz Wlostowski wrote: > Hi, > > When one draws a copper zone over another zone (with the same net, and > the same layer), the two zones are automagically merged in the default > canvas. This is sometimes not desired - at least by me (example: > repeated layout blocks with overlapping zones). Is there a non-obvious > reason why Kicad works this way (related to insulated copper island > removal/connectivity/DRC algorithms)? > > Cheers, > Tom > > _______________________________________________ > Mailing list: https://launchpad.net/~kicad-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
