The ray's One Euro filters (new hands/include/fh_smooth.h) run in continuous time and the
helper reads the ray every loop, so the pose sent to ft_pointer moves at about 100 Hz
instead of jumping at the tracker's 15-30 Hz (the dashboard's dragger made those jumps
jerky). The direction is filtered on the sphere. On the probe-moves replay the pose's
second difference per 90 Hz tick went from 0.90-0.96 deg rms to 0.24-0.26 at the same lag.
While a ray pinch is held the ray pivots on the shoulder as it was at the press, so looking
around doesn't move what's dragged; the reach for push and pull is filtered. A pinch's
first 0.3 s takes 6 deg of turn before it drags. One failed read of the gestures file no
longer ends a drag, and the log says why a drag ended or the ray went off.
Settings: POINTER_RAY_SMOOTH_MINCUTOFF, POINTER_RAY_SMOOTH_BETA, POINTER_RAY_SMOOTH_HOLD,
POINTER_RAY_STEADY, POINTER_RAY_TAP, POINTER_RAY_TAP_DEADZONE. rayeval reads publish dumps
and reports the smoothness at the display's rate.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
