Le 21/06/2019 à 14:57, Seth Hillbrand a écrit : > Hi Wayne- > > I don't think that the relief chamfering is controlled by that option. > We also don't chamfer the connection on the way into the pad, so I'd > tend to agree with Jeff that the extra corner chamfer on only one side > of the connection might be unnecessary. > > It looks like the original knockout code was JP's so I'd be curious to > hear why they were originally added. > > -Seth >
The main reason was a problem with the polygon library Kicad was using at this time. This library frequently created bad polygon shapes due to thermal shapes when filling a zone. I noticed the bad polygon shapes were much less frequent with the chamfered shapes, and when the thermal stubs shape is a X instead of a + for round pads. Beside, chamfers avoid acute angles in thermal reliefs, especially for round (and oval) shapes. They are not mandatory, because I am pretty sure most of other ECAD tools do not use chamfers, but they create a better shape. For me, the main (blocking) issue with the new algo is the calculation time. -- 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
