import { SceneManager } from './SceneManager';
import { PerspectiveCamera, WebGLRenderer, Box3, OrthographicCamera } from 'three';
export declare class SceneShadow {
    private sceneManager;
    private scene;
    private readonly shadowCamera;
    private readonly depthMaterial;
    private needUpdateMap;
    private readonly renderTarget;
    private readonly renderTargetBlur;
    private readonly horizontalBlurMaterial;
    private readonly verticalBlurMaterial;
    private readonly blurPlane;
    private plane;
    constructor(sceneManager: SceneManager);
    update(bbox?: Box3 | undefined): void;
    blurShadow(renderer: WebGLRenderer, amount?: number): void;
    render(renderer: WebGLRenderer, camera: PerspectiveCamera | OrthographicCamera): void;
    dispose(): void;
}