import { Position } from "./position";
export type Radians = number;
export type Degrees = number;
export type DegreesMagnetic = Degrees;
export type DegreesTrue = Degrees;
export type Feet = number;
export type FeetPerMinute = number;
export type Knots = number;
export type Latitude = Degrees;
export type Longitude = Degrees;
export type Metres = number;
export type Minutes = number;
export type NauticalMiles = number;
export declare function clampAngle(angle: DegreesTrue): DegreesTrue;
export declare function DegToRad(value: Degrees): Radians;
export declare function RadToDeg(value: Radians): Degrees;
export declare function robustAcos(value: number): number;
export declare function coordinatesToSpherical(location: Position): number[];
export declare function sphericalToCoordinates(spherical: [number, number, number]): Position;
export declare const MIN_LAT: Latitude;
export declare const MAX_LAT: Latitude;
export declare const MIN_LON: Longitude;
export declare const MAX_LON: Longitude;
export declare const EARTH_RADIUS: NauticalMiles;
export declare enum TurnDirection {
    LEFT = "LEFT",
    RIGHT = "RIGHT"
}