bearingRaw function
Implementation
num bearingRaw(Position start, Position end, {bool calcFinal = false}) {
// Reverse calculation
if (calcFinal == true) {
return calculateFinalBearingRaw(start, end);
}
num lng1 = degreesToRadians(start.lng);
num lng2 = degreesToRadians(end.lng);
num lat1 = degreesToRadians(start.lat);
num lat2 = degreesToRadians(end.lat);
num a = sin(lng2 - lng1) * cos(lat2);
num b = cos(lat1) * sin(lat2) - sin(lat1) * cos(lat2) * cos(lng2 - lng1);
return radiansToDegrees(atan2(a, b));
}