import { BooleanInput, NgtObjectProps, NgtRenderState, Ref } from '@angular-three/core';
import { EventEmitter, TemplateRef } from '@angular/core';
import * as THREE from 'three';
import * as i0 from "@angular/core";
export declare class NgtSobaBillboardContent {
    templateRef: TemplateRef<{
        billboard: Ref<THREE.Group>;
    }>;
    constructor(templateRef: TemplateRef<{
        billboard: Ref<THREE.Group>;
    }>);
    static ngTemplateContextGuard(dir: NgtSobaBillboardContent, ctx: any): ctx is {
        billboard: Ref<THREE.Group>;
    };
    static ɵfac: i0.ɵɵFactoryDeclaration<NgtSobaBillboardContent, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgtSobaBillboardContent, "ng-template[ngt-soba-billboard-content]", never, {}, {}, never, never, true>;
}
export declare class NgtSobaBillboard extends NgtObjectProps<THREE.Group> {
    set follow(value: BooleanInput);
    set lockX(value: BooleanInput);
    set lockY(value: BooleanInput);
    set lockZ(value: BooleanInput);
    content?: NgtSobaBillboardContent;
    beforeRender: EventEmitter<{
        state: NgtRenderState;
        object: THREE.Group;
    }>;
    isWrapper: boolean;
    protected preInit(): void;
    onBeforeRender({ state: { camera }, object }: {
        state: NgtRenderState;
        object: THREE.Group;
    }): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgtSobaBillboard, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<NgtSobaBillboard, "ngt-soba-billboard", never, { "follow": "follow"; "lockX": "lockX"; "lockY": "lockY"; "lockZ": "lockZ"; }, { "beforeRender": "beforeRender"; }, ["content"], never, true>;
}
export declare class NgtSobaBillboardModule {
    static ɵfac: i0.ɵɵFactoryDeclaration<NgtSobaBillboardModule, never>;
    static ɵmod: i0.ɵɵNgModuleDeclaration<NgtSobaBillboardModule, never, [typeof NgtSobaBillboard, typeof NgtSobaBillboardContent], [typeof NgtSobaBillboard, typeof NgtSobaBillboardContent]>;
    static ɵinj: i0.ɵɵInjectorDeclaration<NgtSobaBillboardModule>;
}