The run cycles anchor on their feet, and stride at a real cadence

Oliver: 'the motion seems very flashy and unnatural'. Two causes, both
measured: drawChar centres a frame by its total width while the racket's
reach varies across the cycle, so the BODY teleported sideways up to 28
source px on a frame swap (the female player was worst) — every frame is now
padded until its lower-third centroid sits at the frame centre (residuals
±0.2 px, the normalisation lives in _runroll.py's cut). And the hardcoded
4.5 cycles/s was tuned on 2-4 near-duplicate frames; on eight real phases it
was a strobe — rolled sets stride at TUNE.runHz (2.4), old art keeps 4.5.

In-pane: body wobble down from ~36 device px per swap to 3.2.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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wuwiandClaude Fable 5 committed 2026-08-13 18:53:22 +02:00
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