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2025-12-28 20:50:08 +00:00
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/**
* Given a absolute or relative time definition and current/prev time state of the sequence,
* calculate an absolute time for the next keyframes.
*/
function calcNextTime(current, next, prev, labels) {
if (typeof next === "number") {
return next;
}
else if (next.startsWith("-") || next.startsWith("+")) {
return Math.max(0, current + parseFloat(next));
}
else if (next === "<") {
return prev;
}
else if (next.startsWith("<")) {
return Math.max(0, prev + parseFloat(next.slice(1)));
}
else {
return labels.get(next) ?? current;
}
}
export { calcNextTime };