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prettier

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Jade (Rose) Rowland 2024-08-16 10:56:09 -04:00
parent 796f741a92
commit b60beaf508
1 changed files with 12 additions and 9 deletions
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21
packages/core/util.mjs
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@ -366,7 +366,13 @@ export function objectMap(obj, fn) {
// utility for averaging two clocks together to account for drift // utility for averaging two clocks together to account for drift
export class ClockCollator { export class ClockCollator {
constructor({ getTargetClockTime = () => Date.now() / 1000, weight = 16, offsetDelta = 0.005, checkAfterTime = 2, resetAfterTime = 8 }) { constructor({
getTargetClockTime = () => Date.now() / 1000,
weight = 16,
offsetDelta = 0.005,
checkAfterTime = 2,
resetAfterTime = 8,
}) {
this.offsetTime; this.offsetTime;
this.timeAtPrevOffsetSample; this.timeAtPrevOffsetSample;
this.prevOffsetTimes = []; this.prevOffsetTimes = [];
@ -374,7 +380,7 @@ export class ClockCollator {
this.weight = weight; this.weight = weight;
this.offsetDelta = offsetDelta; this.offsetDelta = offsetDelta;
this.checkAfterTime = checkAfterTime; this.checkAfterTime = checkAfterTime;
this.resetAfterTime = resetAfterTime this.resetAfterTime = resetAfterTime;
} }
calculateTimestamp(currentTime, targetTime) { calculateTimestamp(currentTime, targetTime) {
@ -383,9 +389,9 @@ export class ClockCollator {
const newOffsetTime = targetClockTime - currentTime; const newOffsetTime = targetClockTime - currentTime;
// recalcuate the diff from scratch if the clock has been paused for some time. // recalcuate the diff from scratch if the clock has been paused for some time.
if (diffBetweenTimeSamples > this.resetAfterTime) { if (diffBetweenTimeSamples > this.resetAfterTime) {
this.prevOffsetTimes = [] this.prevOffsetTimes = [];
} }
if (this.offsetTime == null) { if (this.offsetTime == null) {
this.offsetTime = newOffsetTime; this.offsetTime = newOffsetTime;
} }
@ -393,12 +399,10 @@ export class ClockCollator {
if (this.prevOffsetTimes.length > this.weight) { if (this.prevOffsetTimes.length > this.weight) {
this.prevOffsetTimes.shift(); this.prevOffsetTimes.shift();
} }
// after X time has passed, the average of the previous weight offset times is calculated and used as a stable reference // after X time has passed, the average of the previous weight offset times is calculated and used as a stable reference
// for calculating the timestamp // for calculating the timestamp
if (this.timeAtPrevOffsetSample == null || diffBetweenTimeSamples > this.checkAfterTime) { if (this.timeAtPrevOffsetSample == null || diffBetweenTimeSamples > this.checkAfterTime) {
this.timeAtPrevOffsetSample = targetClockTime; this.timeAtPrevOffsetSample = targetClockTime;
const rollingOffsetTime = averageArray(this.prevOffsetTimes); const rollingOffsetTime = averageArray(this.prevOffsetTimes);
//when the clock offsets surpass the delta, set the new reference time //when the clock offsets surpass the delta, set the new reference time
@ -412,9 +416,8 @@ export class ClockCollator {
} }
} }
export function getPerformanceTimeSeconds() { export function getPerformanceTimeSeconds() {
return performance.now() / 1000 return performance.now() / 1000;
} }
// Floating point versions, see Fraction for rational versions // Floating point versions, see Fraction for rational versions