import { Pos, Pos3D } from "@/sdk";

export const calcLatLonsDis = (point1: Pos, point2: Pos) => {
  const lat1 = point1.y;
  const lat2 = point2.y;
  const lng1 = point1.x;
  const lng2 = point2.x;
  var radLat1 = (lat1 * Math.PI) / 180.0;
  var radLat2 = (lat2 * Math.PI) / 180.0;
  var a = radLat1 - radLat2;
  var b = (lng1 * Math.PI) / 180.0 - (lng2 * Math.PI) / 180.0;
  var s =
    2 *
    Math.asin(
      Math.sqrt(
        Math.pow(Math.sin(a / 2), 2) +
          Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)
      )
    );
  s = s * 6378.137; // EARTH_RADIUS;
  return s * 1000;
};

export const calcLintDis = (point1: Pos | Pos3D, point2: Pos | Pos3D) => {
  const xf = Math.pow(point1.x - point2.x, 2);
  const yf = Math.pow(point1.y - point2.y, 2);
  let sqDis = xf + yf;
  return Math.sqrt(sqDis);
};