blurhash/TypeScript/dist/utils.js
2018-05-31 13:42:11 +03:00

23 lines
730 B
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sRGBToLinear = function (value) {
var v = value / 255;
if (v <= 0.04045) {
return v / 12.92;
}
else {
return Math.pow((v + 0.055) / 1.055, 2.4);
}
};
exports.linearTosRGB = function (value) {
var v = Math.max(0, Math.min(1, value));
if (v <= 0.0031308) {
return Math.round(v * 12.92 * 255 + 0.5);
}
else {
return Math.round((1.055 * Math.pow(v, 1 / 2.4) - 0.055) * 255 + 0.5);
}
};
exports.sign = function (n) { return (n < 0 ? -1 : 1); };
exports.signPow = function (val, exp) { return exports.sign(val) * Math.pow(Math.abs(val), exp); };
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