import type { Object3D } from 'three';
import type * as THREE from 'three';
/**
 * @deprecated
 * use @anov/event-bus instead
 */
export declare const emitter: {
    on: {
        <Key extends import("mitt").EventType>(type: Key, handler: import("mitt").Handler<Record<import("mitt").EventType, unknown>[Key]>): void;
        (type: "*", handler: import("mitt").WildcardHandler<Record<import("mitt").EventType, unknown>>): void;
    };
    off: {
        <Key_1 extends import("mitt").EventType>(type: Key_1, handler?: import("mitt").Handler<Record<import("mitt").EventType, unknown>[Key_1]> | undefined): void;
        (type: "*", handler: import("mitt").WildcardHandler<Record<import("mitt").EventType, unknown>>): void;
    };
    emit: {
        <Key_2 extends import("mitt").EventType>(type: Key_2, event: Record<import("mitt").EventType, unknown>[Key_2]): void;
        <Key_3 extends import("mitt").EventType>(type: undefined extends Record<import("mitt").EventType, unknown>[Key_3] ? Key_3 : never): void;
    };
    all: import("mitt").EventHandlerMap<Record<import("mitt").EventType, unknown>>;
};
interface Node {
    children?: Node[];
    [k: string]: any;
}
/**
 * get ancestors nodes
 * @param array
 * @param targetId
 * @param key
 * @returns
 */
export declare const getAncestorsNodes: <T extends Node>(array: T[], targetId: string | number, key?: string) => T[];
/**
 * get object3d ancestors nodes
 * @param object3d
 * @returns
 */
export declare const getObject3dAncestorsNodes: (object3d: Object3D, filter?: ((object3d: Object3D) => boolean) | undefined) => Object3D<THREE.Object3DEventMap>[];
/**
 * get all mesh children, maybe also need line, but not now
 * @param object3d
 * @returns
 */
export declare const getAllMeshChildren: (object3d: Object3D) => Object3D<THREE.Object3DEventMap>[];
/**
 * handle small hump
 * @param camelCaseString
 * @returns
 */
export declare const handleCamelCaseString: (camelCaseString: string) => string;
/**
 * mousePointTo3DPoint
 * @param mouseX
 * @param mouseY
 * @param camera
 * @param renderer
 * @returns
 */
export declare const mousePointTo3DPoint: (mouseX: number, mouseY: number, camera: THREE.Camera, renderer: THREE.WebGLRenderer) => THREE.Vector3;
export {};