/** @format */
import { Palette } from '../image/palette.js';
import { Channel } from './channel.js';
import { Color, ColorConvertOptions } from './color.js';
import { Format } from './format.js';
/**
 * A 64-bit floating point color.
 */
export declare class ColorFloat64 implements Color {
    /**
     * The underlying data array for the color channels.
     */
    protected data: Float64Array;
    /**
     * Gets the format of the color.
     */
    get format(): Format;
    /**
     * Gets the number of channels in the color.
     */
    get length(): number;
    /**
     * Gets the maximum value for any channel.
     */
    get maxChannelValue(): number;
    /**
     * Gets the maximum index value.
     */
    get maxIndexValue(): number;
    /**
     * Checks if the format is Low Dynamic Range (LDR).
     */
    get isLdrFormat(): boolean;
    /**
     * Checks if the format is High Dynamic Range (HDR).
     */
    get isHdrFormat(): boolean;
    /**
     * Checks if the color has a palette.
     */
    get hasPalette(): boolean;
    /**
     * Gets the palette associated with the color, if any.
     */
    get palette(): Palette | undefined;
    /**
     * Gets or sets the index of the color.
     */
    get index(): number;
    set index(i: number);
    /**
     * Gets or sets the red channel value.
     */
    get r(): number;
    set r(r: number);
    /**
     * Gets or sets the green channel value.
     */
    get g(): number;
    set g(g: number);
    /**
     * Gets or sets the blue channel value.
     */
    get b(): number;
    set b(b: number);
    /**
     * Gets or sets the alpha channel value.
     */
    get a(): number;
    set a(a: number);
    /**
     * Gets or sets the normalized red channel value.
     */
    get rNormalized(): number;
    set rNormalized(v: number);
    /**
     * Gets or sets the normalized green channel value.
     */
    get gNormalized(): number;
    set gNormalized(v: number);
    /**
     * Gets or sets the normalized blue channel value.
     */
    get bNormalized(): number;
    set bNormalized(v: number);
    /**
     * Gets or sets the normalized alpha channel value.
     */
    get aNormalized(): number;
    set aNormalized(v: number);
    /**
     * Gets the luminance of the color.
     */
    get luminance(): number;
    /**
     * Gets the normalized luminance of the color.
     */
    get luminanceNormalized(): number;
    /**
     * Constructs a new ColorFloat64 instance.
     * @param {Float64Array | number} data - The initial data for the color, either a Float64Array or a number.
     */
    constructor(data: Float64Array | number);
    /**
     * Creates a new ColorFloat64 instance from another ColorFloat64 instance.
     *
     * @param {ColorFloat64} other - The other ColorFloat64 instance to copy.
     * @returns {ColorFloat64} A new ColorFloat64 instance.
     */
    static from(other: ColorFloat64): ColorFloat64;
    /**
     * Creates a new ColorFloat64 instance from a Float64Array.
     *
     * @param {Float64Array} color - The Float64Array to use for the color data.
     * @returns {ColorFloat64} A new instance of ColorFloat64.
     */
    static fromArray(color: Float64Array): ColorFloat64;
    /**
     * Creates a new ColorFloat64 instance with RGB values.
     *
     * @param {number} r - The red channel value.
     * @param {number} g - The green channel value.
     * @param {number} b - The blue channel value.
     * @returns {ColorFloat64} A new instance of ColorFloat64 with the specified RGB values.
     */
    static rgb(r: number, g: number, b: number): ColorFloat64;
    /**
     * Creates a new ColorFloat64 instance with RGBA values.
     * @param {number} r - The red channel value.
     * @param {number} g - The green channel value.
     * @param {number} b - The blue channel value.
     * @param {number} a - The alpha channel value.
     */
    static rgba(r: number, g: number, b: number, a: number): ColorFloat64;
    /**
     * Gets the value of a specific channel.
     * @param {number | Channel} channel - The channel index or Channel enum.
     * @returns {number} The value of the specified 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 specified 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 Color instance to copy values from.
     */
    set(c: Color): void;
    /**
     * Sets the RGB values of the color.
     * @param {number} r - The red channel value.
     * @param {number} g - The green channel value.
     * @param {number} b - The blue channel value.
     */
    setRgb(r: number, g: number, b: number): void;
    /**
     * Sets the RGBA values of the color.
     * @param {number} r - The red channel value.
     * @param {number} g - The green channel value.
     * @param {number} b - The blue channel value.
     * @param {number} a - The alpha channel value.
     */
    setRgba(r: number, g: number, b: number, a: number): void;
    /**
     * Converts the color to an array of numbers.
     * @returns {number[]} The color as an array of numbers.
     */
    toArray(): number[];
    /**
     * Creates a clone of the current color.
     *
     * @returns {ColorFloat64} A new ColorFloat64 instance that is a clone of the current instance.
     */
    clone(): ColorFloat64;
    /**
     * 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 parameter that specifies the conversion options.
     * @param {string} [opt.format] - The target color format.
     * @param {number} [opt.numChannels] - The number of color channels.
     * @param {number} [opt.alpha] - The alpha value for the color.
     * @returns {Color} The converted color.
     */
    convert(opt?: ColorConvertOptions): Color;
}