SteamVR's combined gaze keeps going on one eye, but it holds the lost
eye's yaw, so the gaze moves half as far sideways as the eyes do.
ft-gaze now reads each eye's tracking uncertainty and raw measurement
from eye-server.mmap. When the tracker loses an eye, ft-gazed takes the
gaze from the other one, plus the offset that eye usually shows
against both, learned while both are seen. On a recording, one eye
alone came out a median 0.8 degrees from both eyes' gaze.
Glances down at the keyboard, past every screen, aren't sent. The
pointer stays put, and eyes lost there don't count as lost.
The gaze probe gets a Headset fit mode. It shows per-eye tracking,
openness and confidence, maps where each eye gets lost, gives hints,
and has a guided check. The settings app opens it from the Gaze page
and shows how often each eye is lost. The probe can also test each eye
alone, and its side panel now collapses to a title bar so the dot
isn't hidden behind it.
Snapping to UI elements is deferred; the mouse drag is the correction.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The correction models, filters, blink filter, and SteamVR log reader move
out of the probe so the gaze service can use them too. Two additions on the
way: the log reader follows the headset going on and off (SteamVR starts its
eye model over each time it goes on), and LiveCorrection counts lessons from
before the last time it went on less (OLD_WEAR), so the first few after
relearn the offset while the shape is kept.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ft-gaze reads the Frame's eye tracker (SteamVR's eyetracking action and the
two gaze sets in eye-server.mmap, read only) and prints where the gaze lands
on the Frametop screens. ft-gazeprobe is a GTK playground on top of it: a
Vision Pro style calibration run, an accuracy test, refining the correction
model from logged points, and click, drag, and snap practice that learn the
tracker's error on the fly. It also follows SteamVR's eyetracking log for
restarts and the clicks SteamVR calibrates itself from, which it keeps only
in memory.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
