Rick Collins wrote:
I really have no idea how things work in the gEDA/PCB world. With
FreePCB the library has a default orientation for parts and there
is a centroid vector to allow the pin 1 orientation to be set
compatibly with the Gerber files. If you use someone else's design
you need to verify that their library parts were done correctly or
you need to use the same footprints which are a part of the layout
and so are available. There is no reason to screw up something as
simple as this.
How the Gerber file looks depends on the footprint definition. Once
one knows *exactly*
a) how the transformations work
b) that all libraries/generators(/custom made footprints) conform to
a sensible standard
checking is as superfluous as with screw diameters and pitches and
before that point
I don't believe it's simple enough.