Due to rounding issues, sometimes (especially for rotated pads)
the region (4 segments+4 arcs) was incorrectly closed
1 unit (nanometer) mismatch between start point and end point.
Although it does not create bad shape, its breaks the round rect pad
identification in CAM tools. start point and end point are now the same.
From master.
These pads were plotted as a segment. This is not the right way:
Pads must be flashed or plotted as regions, not painted.
They are now plotted as Gerber regions round rectangle pads.
These regions are similar to flashed pads.
From Master branch, commit de7154e8e.
Previously, the region was a usual polygon with arc approximated by segment.
Using a region with arcs is a better way because it allows CAM tools to
identify this region as a round-rect pad.
Similar to master branch, commit 9cb3333d05.
Previously, for historical reasons, they were added only if
Include Netlist Attributes option was on.
But Aperture Attributes have nothing to do with Netlist Attributes, and good
Gerber files must include them.
From master branch
They are now in a specific block and no longer combined with an other
command.
(combining these commands with an other command (D01 or D02) is deprecated)
Fixes#3677 | https://gitlab.com/kicad/code/kicad/issues/3677
rect (when not horizontal or vertical), trapezoid and custom shapes are draw as polygons.
The dummy pad used to give attributes is removed, and TO attributes are used in Regions (polygons in Gerber dialect)
This is due to some modifications in Gerber format since the attributes are added in Kicad.
Marek Roszko
jean-pierre charras