import { BaseEvent, Quaternion } from 'three';
export type ScreenOrientation = number;
export interface DeviceOrientationEventExtended extends DeviceOrientationEvent {
    requestPermission?: () => Promise<string>;
    webkitCompassHeading?: number;
}
export declare const CHANGE_EVENT: BaseEvent<'change'>;
export declare const EPS = 0.000001;
export declare const PI_DEG: number;
export declare const PI_DEG2: number;
export declare function setQuaternionFromEvent(event: Partial<DeviceOrientationEvent>, screenOrientation: ScreenOrientation, target: Quaternion): void;
export declare function quaternionYAngle(relativeQuaternion: Quaternion): number;
export declare function yAngleFromEvent(event: Partial<DeviceOrientationEvent>, screenOrientation: ScreenOrientation): number;
export declare function blendQuaternionToAbsoluteYAngle(relativeQuaternion: Quaternion, yAngleOffset: number, target: Quaternion): void;