import * as THREE from 'three';
import { NgtInstance, NgtInstanceState } from '../abstracts/instance';
import { AnyConstructor, BooleanInput } from '../types';
import * as i0 from "@angular/core";
export declare abstract class NgtCommonObjectHelper<TObjectHelper extends THREE.Object3D> extends NgtInstance<TObjectHelper, NgtInstanceState<TObjectHelper>> {
    abstract get objectHelperType(): AnyConstructor<TObjectHelper>;
    set helperVisible(helperVisible: BooleanInput);
    protected parentRef: import("../types").AnyFunction<import("@angular-three/core").Ref<any>>;
    protected parentHostRef: import("../types").AnyFunction<import("@angular-three/core").Ref<any>>;
    protected preInit(): void;
    ngOnInit(): void;
    private readonly init;
    protected get optionFields(): Record<string, boolean>;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgtCommonObjectHelper<any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgtCommonObjectHelper<any>, never, never, { "helperVisible": "helperVisible"; }, {}, never, never, false>;
}
export declare const provideNgtCommonObjectHelper: (sub: import("../types").AnyCtor<any>) => any[];