Simple function to calculate a new point's latitude and longitude based on provided start point, bearing and distance.

geo.kt

fun getPointByDistanceAndBearing(lat: Double, lon: Double, bearing: Double, distanceKm: Double): Pair<Double, Double> {
    val earthRadius = 6378.1

    val bearingR = Math.toRadians(bearing)

    val latR = Math.toRadians(lat)
    val lonR = Math.toRadians(lon)

    val distanceToRadius = distanceKm / earthRadius

    val newLatR = Math.asin(Math.sin(latR) * Math.cos(distanceToRadius) +
            Math.cos(latR) * Math.sin(distanceToRadius) * Math.cos(bearingR))
    val newLonR = lonR + Math.atan2(Math.sin(bearingR) * Math.sin(distanceToRadius) * Math.cos(latR),
            Math.cos(distanceToRadius) - Math.sin(latR) * Math.sin(newLatR))

    val latNew = Math.toDegrees(newLatR)
    val lonNew = Math.toDegrees(newLonR)

    return Pair(latNew, lonNew)
}

Thanks for posting this snippet! 👍

I was adopting it to my project and noticed that kotlin.math.* can be used instead of java.lang.Math for trigonometric functions 😉

Thank you very much for sharing! :)