radiansToLength function

num radiansToLength(
  1. num radians, [
  2. Unit unit = Unit.kilometers
])

Convert a distance measurement (assuming a spherical Earth) from radians to a more friendly unit. Valid units: Unit.miles, Unit.nauticalmiles, Unit.inches, Unit.yards, Unit.meters, Unit.kilometers, Unit.centimeters, Unit.feet

Implementation

num radiansToLength(num radians, [Unit unit = Unit.kilometers]) {
  final factor = factors[unit];
  if (factor == null) {
    throw Exception("$unit units is invalid");
  }
  return radians * factor;
}