31 lines
681 B
JavaScript
31 lines
681 B
JavaScript
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/**
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* Get rotation value
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*/
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function rotateFromString(value, defaultValue = 0) {
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const units = value.replace(/^-?[0-9.]*/, "");
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function cleanup(value) {
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while (value < 0) value += 4;
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return value % 4;
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}
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if (units === "") {
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const num = parseInt(value);
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return isNaN(num) ? 0 : cleanup(num);
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} else if (units !== value) {
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let split = 0;
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switch (units) {
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case "%":
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split = 25;
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break;
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case "deg": split = 90;
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}
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if (split) {
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let num = parseFloat(value.slice(0, value.length - units.length));
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if (isNaN(num)) return 0;
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num = num / split;
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return num % 1 === 0 ? cleanup(num) : 0;
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}
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}
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return defaultValue;
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}
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export { rotateFromString };
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