import { SceneSystem } from 'dacha';
import type { SceneSystemOptions } from 'dacha';
export declare class ZoomToolSystem extends SceneSystem {
    private world;
    private mainActor;
    private rootNode;
    constructor(options: SceneSystemOptions);
    onSceneDestroy(): void;
    private handleSelectScene;
    private handleCameraZoom;
    private handleWheel;
    private updateCameraPosition;
}
