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Let the gaze pointer use our own eye tracker, and weight the eyes

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Frametop Input Settings' Gaze page gets two settings, saved in frametop.conf and
read again by ft-gazed when the file changes: Eye tracker (GAZE_TRACKER: SteamVR's
or our own, frame-eyes' fe-trackd) and Eye bias (GAZE_EYE: auto, left, right).

ft-gazed now combines the eyes, each calibrated on its own: SteamVR's set 2 eyes
with the probe's Left eye and Right eye calibrations, or our tracker's eyes as
they come. Without per-eye calibrations, or with --source, it keeps the older
one-source path. A pointer nudge finds its look from the raw gaze the helper
echoes back; with our tracker it goes to fe-trackd as a click.

The bias leans instead of choosing (gazecal.EyeWeights): on 306 live clicks the
eyes' errors partly cancelled, both together 0.65 deg off against 0.96 and 1.11
for either alone. Left or Right counts that eye twice; auto weights each eye by
its RMS miss at its last 20 nudges, since the calibration's fit picked the wrong
eye on SteamVR's test.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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DeeJanuzandClaude Opus 5.5 committed 2026-09-30 09:11:54 -06:00
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docs/reference.md
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@@ -102,7 +102,7 @@ pointer/helper/run.sh status | log | restart
pointer/driver/install.sh probe # devices, hand roles, who owns the dashboard pointer
```
The pointer settings are in `~/.config/frametop.conf`: `POINTER_SENSITIVITY`, `POINTER_IDLE`, `POINTER_WAKE_COUNTS`, `POINTER_CONTROLLER_PICKUP`, `POINTER_DISTANCE`, `POINTER_CURSOR_DEG`, `POINTER_ORIGIN_FRACTION`, `POINTER_ORIGIN_MARGIN`, `POINTER_SCENE_RADIUS`, `POINTER_EDGE_REACH`, `POINTER_LASER_WIDTH`, `POINTER_IGNORE`, the head follow settings `POINTER_FOLLOW`, `POINTER_LEASH_DEG`, `POINTER_LEASH_DELAY`, `POINTER_LEASH_RETURN`, and `POINTER_FOLLOW_REACH`, and the gaze mode settings `POINTER_GAZE`, `POINTER_GAZE_RETAKE`, `POINTER_GAZE_NUDGE_MAX`, `POINTER_GAZE_HOLD`, and `POINTER_GAZE_SHOW`. The example config explains each. Frametop Input Settings changes them live; after editing the file by hand, restart the relay or the helper.
The pointer settings are in `~/.config/frametop.conf`: `POINTER_SENSITIVITY`, `POINTER_IDLE`, `POINTER_WAKE_COUNTS`, `POINTER_CONTROLLER_PICKUP`, `POINTER_DISTANCE`, `POINTER_CURSOR_DEG`, `POINTER_ORIGIN_FRACTION`, `POINTER_ORIGIN_MARGIN`, `POINTER_SCENE_RADIUS`, `POINTER_EDGE_REACH`, `POINTER_LASER_WIDTH`, `POINTER_IGNORE`, the head follow settings `POINTER_FOLLOW`, `POINTER_LEASH_DEG`, `POINTER_LEASH_DELAY`, `POINTER_LEASH_RETURN`, and `POINTER_FOLLOW_REACH`, and the gaze mode settings `POINTER_GAZE`, `POINTER_GAZE_RETAKE`, `POINTER_GAZE_NUDGE_MAX`, `POINTER_GAZE_HOLD`, and `POINTER_GAZE_SHOW`, and the gaze service's `GAZE_TRACKER` (SteamVR's eye tracker or our own) and `GAZE_EYE` (the eye bias). The example config explains each. Frametop Input Settings changes them live; after editing the file by hand, restart the relay or the helper (the gaze service reads its two again when the file changes).
## Frametop Input Settings