Two independent fixes:
- GUI "beamline busy" indicators (TomoParamsWidget's banner,
FlomniWebpageGenerator's status page) purely wait for
progress["heartbeat"] to go stale (120s / 90s respectively) - there was
no explicit "scan finished" signal to react to instead, since
tomo_scan() wrote a heartbeat at the start of every projection but
never cleared it on exit. Wrapped the scan loop in try/finally so
heartbeat is cleared on every exit path (normal completion, exception,
or interrupt/abort), not just at the next scan's start - both
busy-detectors now see this on their very next poll instead of waiting
out the timeout. Live-verified: heartbeat is None immediately after
tomo_scan() returns.
- Found while investigating a related report ("angular step of the final
combined tomogram shown different between 180 and 360 mode, although
it has to be identical" + "GUI shows projection count doubling when
switching 180->360"): TomoParamsWidget's _compute_type1()/
_requested_to_stepsize() (tomo_params.py) and the generated status
webpage's calcProjections() JS (flomni_webpage_generator.py) are both
independent, un-synced duplicates of the exact old N=int(angle_range/
stepsize) formula fixed in flomni.py's own _tomo_type1_actual_grid()
two commits ago - they were never updated when that fix landed, so the
GUI and webpage kept reporting double the projection count for 360
mode. Fixed both to match flomni.py: N/step/total are always computed
against a fixed 180 degrees, independent of angle_range. Also fixed
the "angular step of the final (combined) tomogram" CLI/wizard lines
in flomni.py itself, which used tomo_angle_range/total_projections
(correct for 180 mode by coincidence, wrong for 360 mode - the true
combined resolution is always 180/total_projections, identical
between modes). Added a regression test asserting the widget's
formulas match flomni.py's for both modes, to catch this exact kind of
drift if it recurs. Live-verified against the running sim: both modes
now report identical total_projections and combined-tomogram step for
the same stepsize.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
