TanTan
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24 lines
644 B
Plaintext
24 lines
644 B
Plaintext
/**
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* Given a absolute or relative time definition and current/prev time state of the sequence,
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* calculate an absolute time for the next keyframes.
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*/
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function calcNextTime(current, next, prev, labels) {
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if (typeof next === "number") {
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return next;
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}
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else if (next.startsWith("-") || next.startsWith("+")) {
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return Math.max(0, current + parseFloat(next));
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}
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else if (next === "<") {
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return prev;
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}
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else if (next.startsWith("<")) {
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return Math.max(0, prev + parseFloat(next.slice(1)));
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}
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else {
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return labels.get(next) ?? current;
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}
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}
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export { calcNextTime };
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