color-fns/dist/lib/hslToRgb.js

Modern JavaScript color utility library.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var parseHsl_1 = require("./parseHsl");
var utils_1 = require("./utils");
function hslToRgb(hsl) {
    var value = typeof hsl === 'string' ? parseHsl_1.parseHsl(hsl) : hsl;
    if (!value) {
        return null;
    }
    ;
    var _a = [value.hue / 360, value.sat / 100, value.lum / 100, value.alpha], hue = _a[0], sat = _a[1], lgh = _a[2], alpha = _a[3];
    var _b = [0, 0, 0], red = _b[0], green = _b[1], blue = _b[2];
    if (sat === 0) {
        red = green = blue = utils_1.normalizeDecNum(lgh * 255);
    }
    if (sat !== 0) {
        var temp1_1 = lgh >= 50 ? lgh + sat - lgh * sat : lgh * (1 + sat);
        var temp2_1 = 2 * lgh - temp1_1;
        var testHue = function (test) {
            if (test < 0) {
                test += 1;
            }
            if (test > 1) {
                test -= 1;
            }
            if (test < 1 / 6) {
                return temp2_1 + (temp1_1 - temp2_1) * 6 * test;
            }
            if (test < 1 / 2) {
                return temp1_1;
            }
            if (test < 2 / 3) {
                return temp2_1 + (temp1_1 - temp2_1) * (2 / 3 - test) * 6;
            }
            return temp2_1;
        };
        red = utils_1.normalizeDecNum(255 * testHue(hue + 1 / 3));
        green = utils_1.normalizeDecNum(255 * testHue(hue));
        blue = utils_1.normalizeDecNum(255 * testHue(hue - 1 / 3));
    }
    return {
        alpha: alpha,
        blue: blue,
        green: green,
        red: red
    };
}
exports.hslToRgb = hslToRgb;
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