@macrostrat/column-components/dist/chroma-js/src/io/hex/rgb2hex.js

React rendering primitives for stratigraphic columns

import "../../utils/type.js";
import unpack from "../../utils/unpack.js";
import last from "../../utils/last.js";
const { round } = Math;
const rgb2hex = (...args) => {
  let [r, g, b, a] = unpack(args, "rgba");
  let mode = last(args) || "auto";
  if (a === void 0) a = 1;
  if (mode === "auto") {
    mode = a < 1 ? "rgba" : "rgb";
  }
  r = round(r);
  g = round(g);
  b = round(b);
  const u = r << 16 | g << 8 | b;
  let str = "000000" + u.toString(16);
  str = str.substr(str.length - 6);
  let hxa = "0" + round(a * 255).toString(16);
  hxa = hxa.substr(hxa.length - 2);
  switch (mode.toLowerCase()) {
    case "rgba":
      return `#${str}${hxa}`;
    case "argb":
      return `#${hxa}${str}`;
    default:
      return `#${str}`;
  }
};
export {
  rgb2hex as default
};
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