Function doesCrossAntiMeridian

src/lib/geo_location_utils.js:96–102

* Find the first index where a polygon ring crosses the antimeridian * (a transition from positive to negative longitude between consecutive * points). Returns null when no crossing is found. * * @param {Array >} pts - polygon points as [lon, lat] pairs * @return {number|null} inde

(pts)

 * @return {number|null} index of the segment that crosses, or null
 */
function doesCrossAntiMeridian(pts) {
    for (let l = 0; l < pts.length - 1; l++) {
        if (pts[l][0] > 0 && pts[l + 1][0] < 0) return l;
    }

    return null;
}

function feature2polygons(feature) {
    var geometry = feature.geometry;