Hi All,

I'm curious what the current state of joints_axes6 is.  I'm working on a
CoreXY configuration that would really benefit from specifying limits in
world space rather than joint space, so the changes in ja6 would be a great
help. Is there a public discussion / development resource I can refer to
(for example, a central TODO list, or an issue tracker)?  For example, sam
mentioned in a machinekit discussion that there are issues with "missing"
axes (like a machine with XYZ & B axes, but no A axis).

Also, is there any interest in a generalized linear kinematics module for
the XYZ axes? The way I'm thinking of it now, it would combine an arbitrary
rotation matrix and shear / scale transforms. The rotation matrix would
deal with rotated axes like in a CoreXY / H-bot, and the shear / scale
transforms could compensate for axes that are not quite perpendicular. This
is different from leadscrew compensation, since the errors are coupled
between axes, not along a single axis.  There would obviously be limits to
what you could do without causing velocity / acceleration issues, but it
seems like it could be useful in a bunch of cases.

Thanks,
Rob
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