FA-9068 / Direct manipulation / Member archive

Gesture axis locking and cancellation: Motion exactly at the activation threshold is ignored · case 03

Motion exactly at the activation threshold is ignored.

Member previewVariant 3 · 3 implementations · 11 checks per implementation

Case contract

Cancelled gestures emit no movement; activate at the maximum absolute-axis threshold; choose dominant magnitude with horizontal tie; lock persists and suppresses cross-axis displacement.

Why this case matters

A deterministic model of gesture axis locking and cancellation; this isolates one interface invariant without requiring a browser.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
threshold	`[null, 0, 0]`	`["x", 5, 0]`	Failed

MEMBER ARCHIVE

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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