'%20d='M270%20150%20C266%20120%20278%2092%20308%2086%20C345%2079%20390%20105%20428%20152%20C444%20172%20456%20184%20457%20198%20C458%20212%20448%20222%20434%20230%20C424%20236%20414%20240%20405%20241%20C402%20250%20392%20278%20392%20300%20C392%20312%20398%20318%20398%20330%20C398%20336.6%20392.6%20342%20386%20342%20C379.4%20342%20374%20336.6%20374%20330%20C374%20318%20380%20312%20380%20300%20C380%20276%20378%20252%20371%20252%20C364%20252%20354%20259%20345%20264%20C340%20278%20328.5%20316%20328.5%20350%20C328.5%20364%20336.5%20370%20336.5%20386%20C336.5%20394%20330%20400.5%20322%20400.5%20C314%20400.5%20307.5%20394%20307.5%20386%20C307.5%20370%20315.5%20364%20315.5%20350%20C315.5%20316%20314%20276%20307%20276%20C299%20276%20294%20280%20292%20284%20C282%20288%20274%20284%20271%20272%20C267%20246%20266%20196%20270%20150%20Z'/%3e%3cpath%20d='M332%20144%20L332%20236%20L418%20190%20Z'%20fill='%23FFFFFF'%20stroke='%23FFFFFF'%20stroke-width='20'%20stroke-linejoin='round'%20stroke-linecap='round'/%3e%3c/svg%3e){kind=small}
Events and patterns
GestureEvent
Section titled “GestureEvent”| Field | Type | Meaning |
|---|---|---|
id |
string | The gesture, e.g. 'head.left'. See the catalog. |
phase |
'start' | 'end' |
Began or stopped. Every start is followed by exactly one end. |
t |
number (ms) | When it happened, on the sample clock. A start is stamped at the gesture’s onset, not when it was confirmed. |
strength |
number | On start: how strongly it crossed the line (1 = exactly at it, or a 0 to 1 score; see each gesture). 0 on end. |
In C# the same fields are Id, Phase (GesturePhase.Start / GesturePhase.End), T and Strength.
Patterns
Section titled “Patterns”| Pattern | Matches |
|---|---|
'blink' |
Exactly that gesture |
'head.*' |
A family: head.left, head.right, head.up, head.down, head.neutral, head.tilt.left, head.tilt.right |
'*' |
Every gesture |
Ordering guarantees
Section titled “Ordering guarantees”- Within one frame, events arrive in a fixed order: face, eyes, mouth, brows, head, expression.
- A gesture never starts twice without ending in between.
- When the profile changes (recalibration,
setProfile), every held gesture exceptface.found/face.lostends first. head.neutralends before a head direction starts, and starts after one ends.
Holding vs. tapping
Section titled “Holding vs. tapping”Fire on start for tap-like verbs (shoot, jump). Treat start…end as a held state for continuous verbs (steer while the head is turned, glow while smiling). isActive(id) tells you whether a gesture is held right now.