/**
 * @description The limits of the rotation.
 *
 * @category Camera
 */
export type RotationLimits = {
    start: number;
    end: number;
    ccw: boolean;
    startAsTieBreaker: boolean;
};
/**
 * @description The boundary of the rotation. (experimental)
 *
 * @category Camera
 */
export type RotationBoundary = {
    start: number;
    end: number;
    positiveDirection: boolean;
    startAsTieBreaker: boolean;
};
/**
 * @description Clamps the rotation within the limits.
 *
 * @category Camera
 */
export declare function clampRotation(rotation: number, rotationLimits?: RotationLimits): number;
/**
 * @description Checks if the rotation is within the limits.
 *
 * @category Camera
 */
export declare function rotationWithinLimits(rotation: number, rotationLimits?: RotationLimits): boolean;
/**
 * @description Checks if the rotation is within the boundary. (experimental)
 *
 * @category Camera
 */
export declare function rotationWithinBoundary(rotation: number, rotationBoundary: RotationBoundary): boolean;
/**
 * @description Normalizes the angle to be between 0 and 2π.
 *
 * @category Camera
 */
export declare function normalizeAngleZero2TwoPI(angle: number): number;
/**
 * @description Gets the smaller angle span between two angles. (in radians)
 *
 * @category Camera
 */
export declare function angleSpan(from: number, to: number): number;
/**
 * @description Converts degrees to radians.
 *
 * @category Camera
 */
export declare function deg2rad(deg: number): number;
/**
 * @description Converts radians to degrees.
 *
 * @category Camera
 */
export declare function rad2deg(rad: number): number;