import { BlendFunction, Effect } from 'postprocessing';
import { Matrix4, Uniform, Camera, Texture, WebGLRenderer, WebGLRenderTarget } from 'three';
import { UniformMap } from '@takram/three-geospatial';
export interface NormalEffectOptions {
    blendFunction?: BlendFunction;
    normalBuffer?: Texture | null;
    octEncoded?: boolean;
    reconstructFromDepth?: boolean;
}
export interface NormalEffectUniforms {
    normalBuffer: Uniform<Texture | null>;
    projectionMatrix: Uniform<Matrix4>;
    inverseProjectionMatrix: Uniform<Matrix4>;
}
export declare const normalEffectOptionsDefaults: {
    blendFunction: BlendFunction;
    octEncoded: false;
    reconstructFromDepth: false;
};
export declare class NormalEffect extends Effect {
    private camera;
    uniforms: UniformMap<NormalEffectUniforms>;
    constructor(camera: Camera, options?: NormalEffectOptions);
    get mainCamera(): Camera;
    set mainCamera(value: Camera);
    update(renderer: WebGLRenderer, inputBuffer: WebGLRenderTarget, deltaTime?: number): void;
    get normalBuffer(): Texture | null;
    set normalBuffer(value: Texture | null);
    octEncoded: boolean;
    reconstructFromDepth: boolean;
}