import * as _angular_core from '@angular/core';
import { AfterViewInit, OnChanges, SimpleChanges } from '@angular/core';
import * as THREE from 'three';
import * as i2 from '@angular/common';

type NcCameraPlacementType = 'default' | 'left' | 'right' | 'top' | 'bottom' | 'back' | 'front';
declare class GltfViewerComponent implements AfterViewInit, OnChanges {
    /** 模型地址 */
    ncUrl: _angular_core.InputSignal<string>;
    /** 摄像机初始方位 */
    ncCameraPlacement: _angular_core.InputSignal<NcCameraPlacementType>;
    /** 是否启用背景色 */
    ncBg: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /** 背景色值 */
    ncBgColor: _angular_core.InputSignal<string>;
    /** 操作提示 */
    ncTips: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /** 控制面板 */
    ncControl: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /** 背景是否透明 */
    ncAlpha: _angular_core.InputSignalWithTransform<boolean, unknown>;
    readonly showLoading: _angular_core.WritableSignal<boolean>;
    private readonly eleRef;
    private readonly ls;
    private readonly ngZone;
    private readonly renderer;
    private readonly destroyRef;
    private readonly domId;
    private camera;
    private scene;
    private loader;
    private webglRenderer;
    private domWidth;
    private domHeight;
    private gltf;
    private size;
    private center;
    private controls;
    private mixer;
    private readonly clock;
    private gui;
    private axesHelper;
    private ambientLight;
    private directionalLight;
    private directionalLightHelper;
    private pointLight;
    private pointLightHelper;
    private ktx2Loader;
    private environmentRenderTarget;
    private removeResizeListener;
    private initTimer;
    private resizeTimer;
    private animationFrameId;
    private animationRunning;
    private loadVersion;
    private destroyed;
    private readonly state;
    constructor();
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    init(): void;
    render(): void;
    private readonly animate;
    private readonly onWindowResize;
    updateModel(): void;
    setCameraPlacement(): void;
    addGUI(): void;
    updateToneMapping(): void;
    updateToneMappingExposure(): void;
    updateBackground(): void;
    toggleAxesHelper(): void;
    toggleWireframe(): void;
    traverseMaterials(object: THREE.Object3D, callback: (material: THREE.Material) => void): void;
    toggleAutoRotate(): void;
    updateAnimation(): void;
    toggleAmbientLight(): void;
    updateAmbientLight(): void;
    toggleDirectionalLight(): void;
    updateDirectionalLight(): void;
    toggleDirectionalLightHelper(): void;
    togglePointLight(): void;
    updatePointLight(): void;
    togglePointLightHelper(): void;
    webglLoseContext(): void;
    private syncInputState;
    private handleLoadedGltf;
    private getAspectRatio;
    private getCameraDistance;
    private getViewerElement;
    private getControlElement;
    private getHostWindow;
    private getDevicePixelRatio;
    private startAnimation;
    private stopAnimation;
    private stopMixer;
    private cleanupModel;
    private cleanupControls;
    private cleanup;
    private destroyGUI;
    private removeObject;
    private disposeRenderer;
    private disposeObject;
    private disposeMaterial;
    private getGuiClosed;
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<GltfViewerComponent, never>;
    static ɵcmp: _angular_core.ɵɵComponentDeclaration<GltfViewerComponent, "nc-gltf-viewer", never, { "ncUrl": { "alias": "ncUrl"; "required": false; "isSignal": true; }; "ncCameraPlacement": { "alias": "ncCameraPlacement"; "required": false; "isSignal": true; }; "ncBg": { "alias": "ncBg"; "required": false; "isSignal": true; }; "ncBgColor": { "alias": "ncBgColor"; "required": false; "isSignal": true; }; "ncTips": { "alias": "ncTips"; "required": false; "isSignal": true; }; "ncControl": { "alias": "ncControl"; "required": false; "isSignal": true; }; "ncAlpha": { "alias": "ncAlpha"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}

declare class NcGltfViewerModule {
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<NcGltfViewerModule, never>;
    static ɵmod: _angular_core.ɵɵNgModuleDeclaration<NcGltfViewerModule, never, [typeof GltfViewerComponent, typeof i2.CommonModule], [typeof GltfViewerComponent]>;
    static ɵinj: _angular_core.ɵɵInjectorDeclaration<NcGltfViewerModule>;
}

export { GltfViewerComponent, NcGltfViewerModule };
export type { NcCameraPlacementType };