Real-HW-adjacent (sim) testing surfaced three issues with the smear
calibration aid:
1. The composite reverted to the plain rotating live view right before
the click prompt. find_rotation_center_smear_experimental() called
update_frame() after _smear_sweep(), which grabs a fresh raw live
frame -- overwriting the composite it just built. Also,
_push_smear_composite always resumed live mode, so even without that
bug the composite would only stay visible for hold_display_s.
Fixed: _push_smear_composite gained resume_live=False for the final
push; _smear_sweep now takes keep_shutter_open and closes the
shutter itself at the end, so the composite (not a fresh grab) stays
frozen on screen for the click. The stray update_frame() call is
removed.
2. The composite appeared rotated relative to the live view.
get_last_image() frames already have num_rotation_90/transpose
applied (PreviewSignal.put() applies it to whatever it stores), so
composites built from those frames got the transform applied AGAIN
by push_preview_image()'s own self.image.put() call. Fixed:
push_preview_image() now undoes the transform first (reverse order,
since transpose is applied last forward) so the net effect is a
single transform, matching a live frame.
3. Feature request: the sim camera's rotation-coupled pattern was a
single eccentric gaussian blob -- a better analog for the isolated/
point-particle case than the extended/textured case this feature
actually targets. Added generate_speckle_grains/
make_speckle_test_pattern (sim_cameras.py): a fixed, seeded field of
small gaussian "grains" at a range of radii, rotating rigidly
together as the live angle changes -- producing several concentric
arcs in the composite instead of one, much closer to a real textured
sample. New sim_speckle_count/sim_speckle_seed config, defaults
requiring no yaml changes.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
The simulated cam_xeye (SimIDSCamera/_SimIDSBackend) served a single
static Gaussian blob, cached at construction -- rotating lsamrot in a
simulated session produced no visible motion, so the smear/composite
rotation-center calibration aid had nothing to smear into an arc.
Add an opt-in sim_rotation_coupling config (mirrors the existing
sim_coarse_coupling idiom in sim_lamni.py's measured_positions()): when
set, _SimIDSBackend regenerates a fresh frame on every get_image_data()
call with an eccentric blob (make_rotating_test_pattern) tracking the
coupled axis' live simulated Galil position instead of serving the
cached static frame. Wired into LamNI's cam_xeye sim config only
(host/port/axis matching lsamrot's own sim config); flomni's cam_xeye
and any other SimIDSCamera user are unaffected since the new params
default to None (byte-identical output to before, confirmed by test).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
appel_candholler
wakonig_kandappel_c
wyzula_jandappel_c
