import { Raycaster, Vector2 } from 'three';
import CoreMap from './CoreMap';
import { DrillDownInfo, DrillUpInfo } from '../type';
export interface DrillPath {
    name: string;
    adcode: string;
    parentCode: string;
}
export declare class PickHelper {
    raycaster: Raycaster;
    mousePointer: Vector2;
    drillPaths: DrillPath[];
    constructor();
    getCanvasRelativePosition(event: any, coreMap: any): {
        x: number;
        y: number;
    };
    onDoubleClick(event: MouseEvent, coreMap: CoreMap, callback: (drillInfo: DrillDownInfo | DrillUpInfo, drillType: 'down' | 'up') => void): void;
    onBackEvent(coreMap: CoreMap, callback: (drillInfo: DrillDownInfo | DrillUpInfo) => void): void;
}