index.d.ts

/**
 * Gets the mean sea level according to the EGM96.
 *
 * @param latitude The latitude in degrees
 * @param longitude The longitude in degrees
 * @returns The mean sea level in meters, relative to the WGS84 ellipsoid.
 */
export declare function meanSeaLevel(
  latitude: number,
  longitude: number
): number;

/**
 * Converts a WGS84's ellipsoid-relative altitude to an EGM96-relative
 * altitude.
 *
 * @param latitude The latitude in degrees
 * @param longitude The longitude in degrees
 * @param altitude The altitude relative to the WGS84's ellipsoid in meters
 * @returns The altitude relative to EGM96 in meters
 */
export declare function ellipsoidToEgm96(
  latitude: number,
  longitude: number,
  altitude: number
): number;

/**
 * Converts an EGM96-relative altitude to a WGS84's ellipsoid-relative
 * altitude.
 *
 * @param latitude The latitude in degrees
 * @param longitude The longitude in degrees
 * @param altitude The altitude relative to EGM96 in meters
 * @returns The altitude relative to the WGS84's ellipsoid in meters
 */
export declare function egm96ToEllipsoid(
  latitude: number,
  longitude: number,
  altitude: number
): number;