import * as Zappar from '@zappar/zappar';
import { ContextManager } from '@zcomponent/core';
import { StaticGroup } from '../StaticObject3D';
declare enum face_landmark_name_t {
    EYE_LEFT = "EYE_LEFT",
    EYE_RIGHT = "EYE_RIGHT",
    EAR_LEFT = "EAR_LEFT",
    EAR_RIGHT = "EAR_RIGHT",
    NOSE_BRIDGE = "NOSE_BRIDGE",
    NOSE_TIP = "NOSE_TIP",
    NOSE_BASE = "NOSE_BASE",
    LIP_TOP = "LIP_TOP",
    LIP_BOTTOM = "LIP_BOTTOM",
    MOUTH_CENTER = "MOUTH_CENTER",
    CHIN = "CHIN",
    EYEBROW_LEFT = "EYEBROW_LEFT",
    EYEBROW_RIGHT = "EYEBROW_RIGHT"
}
export interface FaceLandmarkGroupConstructorProps {
    /**
     * @zprop
     * @zdefault NOSE_TIP
     */
    landmarkPosition: face_landmark_name_t;
}
/**
 * A Face Landmark node used to track content from various points on the user's face.
 * These landmarks will remain accurate, even as the user's expression changes.
 * @zcomponent
 * @zicon familiar_face_and_zone
 * @zgroup AR
 * @ztag three/Object3D/Group/Zappar/FaceLandmarkGroup
 * @zparents three/Object3D/Group/Zappar/FaceAnchorGroup
 */
export declare class FaceLandmarkGroup extends StaticGroup {
    private props;
    landmark?: Zappar.FaceLandmark;
    private _arContext;
    constructor(ctx: ContextManager, props: FaceLandmarkGroupConstructorProps);
    private _frame;
    dispose(): never;
    /** @zignore */
    position: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
    /** @zignore */
    scale: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
    /** @zignore */
    rotation: import("@zcomponent/core").Observable<[x: number, y: number, z: number], never>;
}
export {};