/** @format */
import { Palette } from '../image/palette.js';
import { Channel } from './channel.js';
import { Color, ColorConvertOptions } from './color.js';
import { Format } from './format.js';
/**
 * A 4-bit unsigned int color with channel values in the range [0, 15].
 */
export declare class ColorUint4 implements Color {
    /** Internal data storage for color channels */
    private _data;
    /** Format of the color */
    get format(): Format;
    /** Length of the color data */
    private readonly _length;
    /** Length of the color data */
    get length(): number;
    /** Maximum value for any channel */
    get maxChannelValue(): number;
    /** Maximum value for the index */
    get maxIndexValue(): number;
    /** Indicates if the format is Low Dynamic Range */
    get isLdrFormat(): boolean;
    /** Indicates if the format is High Dynamic Range */
    get isHdrFormat(): boolean;
    /** Indicates if the color has a palette */
    get hasPalette(): boolean;
    /** Palette associated with the color, if any */
    get palette(): Palette | undefined;
    /** Index value of the color */
    get index(): number;
    set index(i: number);
    /** Red channel value */
    get r(): number;
    set r(r: number);
    /** Green channel value */
    get g(): number;
    set g(g: number);
    /** Blue channel value */
    get b(): number;
    set b(b: number);
    /** Alpha channel value */
    get a(): number;
    set a(a: number);
    /** Normalized red channel value */
    get rNormalized(): number;
    set rNormalized(v: number);
    /** Normalized green channel value */
    get gNormalized(): number;
    set gNormalized(v: number);
    /** Normalized blue channel value */
    get bNormalized(): number;
    set bNormalized(v: number);
    /** Normalized alpha channel value */
    get aNormalized(): number;
    set aNormalized(v: number);
    /** Luminance of the color */
    get luminance(): number;
    /** Normalized luminance of the color */
    get luminanceNormalized(): number;
    /**
     * Constructs a new ColorUint4 instance.
     * @param {Uint8Array | number} data - Either a Uint8Array or a number representing the length of the color data.
     */
    constructor(data: Uint8Array | number);
    /**
     * Creates a new ColorUint4 instance from another ColorUint4 instance.
     * @param {ColorUint4} other - The other ColorUint4 instance.
     * @returns {ColorUint4} A new ColorUint4 instance.
     */
    static from(other: ColorUint4): ColorUint4;
    /**
     * Creates a new ColorUint4 instance from a Uint8Array.
     * @param {Uint8Array} color - The Uint8Array representing the color.
     * @returns {ColorUint4} A new ColorUint4 instance.
     */
    static fromArray(color: Uint8Array): ColorUint4;
    /**
     * Creates a new ColorUint4 instance with RGB values.
     * @param {number} r - Red channel value.
     * @param {number} g - Green channel value.
     * @param {number} b - Blue channel value.
     * @returns {ColorUint4} A new ColorUint4 instance.
     */
    static rgb(r: number, g: number, b: number): ColorUint4;
    /**
     * Creates a new ColorUint4 instance with RGBA values.
     * @param {number} r - Red channel value.
     * @param {number} g - Green channel value.
     * @param {number} b - Blue channel value.
     * @param {number} a - Alpha channel value.
     * @returns {ColorUint4} A new ColorUint4 instance.
     */
    static rgba(r: number, g: number, b: number, a: number): ColorUint4;
    /**
     * Gets the value of a specific channel.
     * @param {number | Channel} channel - The channel index or Channel enum.
     * @returns {number} The value of the channel.
     */
    getChannel(channel: number | Channel): number;
    /**
     * Gets the normalized value of a specific channel.
     * @param {number | Channel} channel - The channel index or Channel enum.
     * @returns {number} The normalized value of the channel.
     */
    getChannelNormalized(channel: number | Channel): number;
    /**
     * Sets the value of a specific channel.
     * @param {number | Channel} index - The channel index or Channel enum.
     * @param {number} value - The value to set.
     */
    setChannel(index: number | Channel, value: number): void;
    /**
     * Sets the color values from another Color instance.
     * @param {Color} c - The other Color instance.
     */
    set(c: Color): void;
    /**
     * Sets the RGB values of the color.
     * @param {number} r - Red channel value.
     * @param {number} g - Green channel value.
     * @param {number} b - Blue channel value.
     */
    setRgb(r: number, g: number, b: number): void;
    /**
     * Sets the RGBA values of the color.
     * @param {number} r - Red channel value.
     * @param {number} g - Green channel value.
     * @param {number} b - Blue channel value.
     * @param {number} a - Alpha channel value.
     */
    setRgba(r: number, g: number, b: number, a: number): void;
    /**
     * Converts the color to an array of channel values.
     * @returns {number[]} An array of channel values.
     */
    toArray(): number[];
    /**
     * Creates a clone of the current color instance.
     * @returns {ColorUint4} A new ColorUint4 instance that is a clone of the current instance.
     */
    clone(): ColorUint4;
    /**
     * Checks if the current color is equal to another color.
     * @param {Color} other - The other color to compare with.
     * @returns {boolean} True if the colors are equal, false otherwise.
     */
    equals(other: Color): boolean;
    /**
     * Converts the current color instance to a different format based on the provided options.
     *
     * @param {ColorConvertOptions} [opt] - Optional parameters for color conversion.
     * @param {string} [opt.format] - The target color format (e.g., 'rgb', 'hex').
     * @param {number} [opt.numChannels] - The number of color channels to include in the conversion.
     * @param {number} [opt.alpha] - The alpha value for the color conversion.
     * @returns {Color} The converted color.
     */
    convert(opt?: ColorConvertOptions): Color;
}