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Monorepo for Aesthetic.Computer aesthetic.computer
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12345678910111213141516171819202122// A continuous presentation clock: small network corrections change speed,// never position. Start a new key when the conductor starts a new run.export function createSubTimeline() { let anchor = null, local = 0, rate = 1, key; const at = now => anchor === null ? null : anchor + (now - local) * rate; return { at, update(scoreTime, now, run) { if (![scoreTime, now].every(Number.isFinite)) return false; if (anchor === null || key !== run) { anchor = scoreTime; local = now; rate = 1; key = run; } else { const predicted = at(now); const error = scoreTime - predicted; anchor = predicted; local = now; rate = 1 + Math.max(-0.02, Math.min(0.02, error / 2)); } return true; }, };}