export declare class Point {
    x: number;
    y: number;
    constructor(x: number, y: number);
}
export declare class ImageData {
    data: Uint8ClampedArray;
    width: number;
    height: number;
    constructor(data: Uint8ClampedArray, width: number, height: number);
    /**
     * Extracts and returns a subset of an image based on specified coordinates and dimensions.
     *
     * @param {number} x - The starting X coordinate from which to extract the subset.
     * @param {number} y - The starting Y coordinate from which to extract the subset.
     * @param {number} width - The width of the subset to be extracted.
     * @param {number} height - The height of the subset to be extracted.
     * @returns {ImageData} An `ImageData` object representing the extracted subset.
     */
    subset(x: number, y: number, width: number, height: number): ImageData;
    /**
     * Erases a rectangular area within the image by setting its pixel values to white (fully opaque).
     *
     * @param {number} x - The starting X coordinate of the rectangle to be erased.
     * @param {number} y - The starting Y coordinate of the rectangle to be erased.
     * @param {number} width - The width of the rectangle to be erased.
     * @param {number} height - The height of the rectangle to be erased.
     * @returns {ImageData} The modified `ImageData` instance with the specified area erased.
     */
    erase(x: number, y: number, width: number, height: number): ImageData;
    /**
     * Returns the grayscale value at a specific point in the image using the formula for luminosity.
     *
     * @param {number} x - The X coordinate of the point.
     * @param {number} y - The Y coordinate of the point.
     * @returns {number} The grayscale value at the given point.
     */
    getGrayScale(x: number, y: number): number;
}
/**
 * Generates a random dark color in RGB format.
 *
 * This function generates random RGB values and checks their brightness using the luminance formula.
 * It ensures that the generated color is dark by making sure its brightness is below 128.
 */
export declare function getRandomDarkColor(): string;
/**
 * Calculates the bounding box for an array of Points.
 *
 * Given an array of Points, returns the top-left and bottom-right corners of the smallest rectangle
 * that can enclose all given points.
 *
 * @param {...Point[]} points - An array of Point objects representing the coordinates of interest.
 * @returns {[Point, Point]} A tuple containing two Point objects; the first one represents the top-left corner,
 *                            and the second one represents the bottom-right corner of the bounding box.
 */
export declare function getBoundingBox(...points: Point[]): [Point, Point];