Standard apertures are circle, rect, oblong and polygon (regular polygonal shapes with 3 to 12 vertices)
The support of the standard aperture type polygon was missing in Gerber plotter.
This places the arc approximation setting in the kicad_pcb file and uses
it for all parts of the board rendering where arcs are converted to
segments. This allows the user to customize their speed vs. accuracy
tradeoff. The default setting of maximum error of 0.005mm is acceptable
for small boards on moderate systems.
This corrects an issue with fill segments-per-circle and moves the error
to segmetns calculation down in a number of functions to expose the
single value for approximation
Note that the comment in line 142 where the scale factor was set had the
correct value to indicate metric (1) but in the actual boilerplate, we
set imperial (0). This has been around for 6-8 years, so it would seem
DXF is not our most popular export.
Note, I initially tried to use '1' to specify metric units but this was
not handled by DXF readers (QCAM, Inkscape). Instead, scaling the page
units to inches properly seems to work.
Allows 0 to 4 chamfered corners, not only one.
A custom shape allow this kind of shape. However because it is a primitive,
it is easier to edit and it support thermal reliefs.
Jeff Young
jean-pierre charras
Ian McInerney
Seth Hillbrand