10 lines
433 B
JavaScript
10 lines
433 B
JavaScript
// Inspired by https://github.com/material-components/material-components-ios/blob/bca36107405594d5b7b16265a5b0ed698f85a5ee/components/Elevation/src/UIColor%2BMaterialElevation.m#L61
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export default function getOverlayAlpha(elevation) {
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let alphaValue;
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if (elevation < 1) {
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alphaValue = 5.11916 * elevation ** 2;
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} else {
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alphaValue = 4.5 * Math.log(elevation + 1) + 2;
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}
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return Math.round(alphaValue * 10) / 1000;
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} |