Function getDataNumber

src/tailwind/Components/DomeGallery/DomeGallery.jsx:48–52

(el, name, fallback)

  return a - 180;
};
const getDataNumber = (el, name, fallback) => {
  const attr = el.dataset[name] ?? el.getAttribute(`data-${name}`);
  const n = attr == null ? NaN : parseFloat(attr);
  return Number.isFinite(n) ? n : fallback;
};

function buildItems(pool, seg) {
  const xCols = Array.from({ length: seg }, (_, i) => -37 + i * 2);