bounding rectangle box

boundingbox.js

const radToDeg = (v) => {
  return (v * 180) / Math.PI;
};

const degToRad = (v) => {
  return (v * Math.PI) / 180;
};

export const getBoundBox = (lat, lon, rangeInMeters = 10) => {
  const latRad = degToRad(lat);
  const lonRad = degToRad(lon);

  const d = rangeInMeters / 6371000;

  const minLat = latRad - d;
  const maxLat = latRad + d;
  const minLon = lonRad - d / Math.cos(latRad);
  const maxLon = lonRad + d / Math.cos(latRad);

  return [
    [radToDeg(minLat), radToDeg(minLon)],
    [radToDeg(maxLat), radToDeg(maxLon)],
  ];
};