import { XY } from './xy';
/**
 * 屏幕坐标
 */
export declare class ScreenXY extends XY {
    /**
      * 构造函数
      * @param {number} x - X
      * @param {number} y - Y
      */
    constructor(x?: number, y?: number);
    /**
     * 克隆坐标
     * @return {ScreenXY} 返回坐标
     */
    clone(): ScreenXY;
    /**
   * 计算与另一点间欧式距离
   * @param {ScreenXY} screenXY - 另一点坐标
   * @return {number} 返回距离
   */
    distanceTo(screenXY: ScreenXY): number;
    /**
   * 判断坐标是否相等
   * @param {ScreenXY} obj - 坐标
   * @return {boolean} 返回是否相等
   */
    equals(screenXY: ScreenXY): boolean;
    /**
   * 判断是否包含坐标
   * @param {ScreenXY} obj - 坐标
   * Returns `true` if both coordinates of the given point are less than the corresponding current point coordinates (in absolute values).
   * @return {boolean} 返回是否包含
   */
    contains(screenXY: ScreenXY): boolean;
    /**
   * 输出字符串
   * @param {number} precision - 保留精度
   * @return {string} 返回字符串
   */
    toString(precision?: number): string;
}