import NamedComponent from "../named-component/index.js";
import { ValueOf } from "ts-essentials";
import { Vec3 } from "../../types/data-types.js";
import MetallicRoughness from "./metallic-roughness/index.js";
import Indexer from "../asset/indexer/index.js";
/**
 * Describes the alpha mode of a material
 * @alias AlphaModes
 * @enum {string}
 * @memberof Material
 * @static
 */
declare const alphaModes: {
    readonly OPAQUE: "OPAQUE";
    readonly MASK: "MASK";
    readonly BLEND: "BLEND";
};
type AlphaMode = ValueOf<typeof alphaModes>;
/**
 * Material - a builder for a GLTF material object
 * @see {@link https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#reference-material | GLTF reference}
 * @hideconstructor
 */
export default class Material extends NamedComponent<{
    emissiveFactor: Vec3;
    alphaMode: AlphaMode;
    alphaCutoff: number;
    doubleSided: boolean;
    pbrMetallicRoughness: MetallicRoughness;
}> {
    metallicRoughness: typeof this.pbrMetallicRoughness;
    constructor();
    static get AlphaModes(): {
        readonly OPAQUE: "OPAQUE";
        readonly MASK: "MASK";
        readonly BLEND: "BLEND";
    };
    /**
     * emissiveFactor - sets the emissive colour of the material
     *
     * @param {Vec3} emissiveFactor emissive colour
     *
     * @returns this
     */
    emissiveFactor(emissiveFactor: Vec3): this;
    /**
     * alphaMode - sets the alpha mode of the material
     *
     * @param {AlphaMode} alphaMode one of the valid alpha modes
     *
     * @returns this
     */
    alphaMode(alphaMode: AlphaMode): this;
    /**
     * alphaCutoff - sets the alpha cutoff of the material
     * when alphaMode is set to {@link Material.alphaMode.MASK}
     *
     * @param {number} alphaCutoff a number in the range [0, 1]
     *
     * @returns this
     */
    alphaCutoff(alphaCutoff: number): this;
    /**
     * doubleSided - sets whether the material is double sided.
     *
     * @param {boolean} doubleSided
     *
     * @returns this
     */
    doubleSided(doubleSided: boolean): this;
    /**
     * pbrMetallicRoughness - Sets values used to define the metallic-roughness material
     * model from Physically-Based Rendering (PBR) methodology.
     *
     * @param {MetallicRoughness} pbrMetallicRoughness a MetallicRoughness object
     *
     * @returns this
     */
    pbrMetallicRoughness(pbrMetallicRoughness: MetallicRoughness): this;
    build(indexer: Indexer): object;
}
export {};