/** @format */
import { Line } from '../common/line.js';
import { Point } from '../common/point.js';
import { Rectangle } from '../common/rectangle.js';
import { Pixel } from './pixel.js';
/**
 * Abstract class containing utility methods for image processing.
 */
export declare abstract class ImageUtils {
    /**
     * Test if the pixel **p** is within the circle centered at **center** with a
     * squared radius of **rad2**. This will test the corners, edges, and center
     * of the pixel and return the ratio of samples within the circle.
     *
     * @param {Pixel} p - The pixel to test.
     * @param {Point} center - The center point of the circle.
     * @param {number} rad2 - The squared radius of the circle.
     * @param {boolean} [antialias=true] - Whether to apply antialiasing. Defaults to true.
     * @returns {number} The ratio of samples within the circle.
     */
    static circleTest(p: Pixel, center: Point, rad2: number, antialias?: boolean): number;
    /**
     * Clip a line to a rectangle using the Cohen–Sutherland clipping algorithm.
     *
     * @param {Rectangle} rect - The rectangle to clip against.
     * @param {Line} line - The line to be clipped. Results are stored in this object.
     * @returns {boolean} True if the line is partially or completely within the rectangle, false otherwise.
     */
    static clipLine(rect: Rectangle, line: Line): boolean;
}