/**
* @function HaversineDistance
* @description Calculate the distance between two coordinates using the haversine formula
* @param {Integer} latitude1 - The input integer
* @param {Integer} latitude2 - The input integer
* @param {Integer} longitude1 - The input integer
* @param {Integer} longitude2 - The input integer
* @return {Integer} Haversine Distance.
* @see [Haversine_Distance](https://pt.wikipedia.org/wiki/F%C3%B3rmula_de_Haversine)
*/
const haversineDistance = (
latitude1 = 0,
longitude1 = 0,
latitude2 = 0,
longitude2 = 0
) => {
validateLatOrLong(latitude1)
validateLatOrLong(latitude2)
validateLatOrLong(longitude1)
validateLatOrLong(longitude2)
const earthRadius = 6371e3 // 6,371km
const pi = Math.PI
const cos1 = (latitude1 * pi) / 180.0
const cos2 = (latitude2 * pi) / 180.0
const deltaLatitude = ((latitude2 - latitude1) * pi) / 180.0
const deltaLongitude = ((longitude2 - longitude1) * pi) / 180.0
const alpha =
Math.sin(deltaLatitude / 2) * Math.sin(deltaLatitude / 2) +
Math.cos(cos1) *
Math.cos(cos2) *
Math.sin(deltaLongitude / 2) *
Math.sin(deltaLongitude / 2)
const constant = 2 * Math.atan2(Math.sqrt(alpha), Math.sqrt(1 - alpha))
return earthRadius * constant
}
const validateLatOrLong = (value) => {
if (typeof value !== 'number') {
throw new TypeError('The value of latitude or longitude should be a number')
}
}
export { haversineDistance }
