import { CBTextureLoadError } from "./CBTextureLoader";
import * as THREE from "three";
import { CanvasContext } from "react-three-fiber";
export declare class CBMaterialProperties {
    readonly ppi: number;
    readonly diffuseUrl: string;
    readonly normalsUrl?: string | undefined;
    readonly specularUrl?: string | undefined;
    constructor(ppi: number, diffuseUrl: string, normalsUrl?: string | undefined, specularUrl?: string | undefined);
}
export declare class CBMaterial {
    readonly props: CBMaterialProperties;
    readonly canvasID: string;
    readonly context: CanvasContext;
    swapOffscreen: boolean;
    private readonly _diffuseLoader;
    private readonly _normalsLoader;
    private readonly _specularLoader;
    constructor(props: CBMaterialProperties, canvasID: string, context: CanvasContext, swapOffscreen?: boolean);
    width: number;
    height: number;
    private _numNotLoaded;
    diffuseTexture: THREE.Texture | null;
    normalsTexture: THREE.Texture | null;
    specularTexture: THREE.Texture | null;
    load(onLoad: () => void, onError: (event: CBTextureLoadError) => void): void;
    private maybeOnLoad;
    dispose(): void;
}