[LinuxCNC/linuxcnc PR#270] axis: default touchoff coordinate system

#1 – jepler 于 2017-05-18

Before this change, you can touch off several axes in the non-active coordinate system, because the user’s change to the “coordinate system” dropdown sticks from one touch off to the next.

After this change, even if the user selects a different “coordinate system” from the dropdown, the next touch off will start with the active coordinate system selected instead.

It’s possible that the new proposed behavior is better than the old, but if it is then the now-useless line should be removed from touchoffsystem, as this pseudo-patch suggests:
~~~~
savetaskmode = s.task_mode
+ vars.touchoffsystem.set(system)
ensuremode(linuxcnc.MODEMDI)
~~~~

A more comprehensive approach might make “Current system” its own item in the pull-down, so that when a user selects a different system manually, their selection sticks as now; but a user who always prefers to touch off in the current system can get that behavior too. As noted in the conversation on the linked issue, this is not too hard to do, since P0 names the current system. In fact, I implemented this as PR #272, so can you see whether this scratches your itch?

#2 – phillc54 于 2017-05-19

#272 does this much better…