import { ScreenBounds } from "../common/screen-bounds";
import { ScreenXY } from "../common/screen-xy";
import { LineSymbol } from "./symbol";
/**
 * 简单线符号
 * @remarks
 * 最常用的线符号
 */
export declare class AlternateLineSymbol extends LineSymbol {
    color1: string;
    color2: string;
    alternate: number;
    /**
     * 绘制线
     * @param {CanvasRenderingContext2D} ctx - 绘图上下文
     * @param {ScreenXY[]} screenXYs - 线对应坐标点的屏幕坐标集合
     */
    draw(ctx: CanvasRenderingContext2D, screenXYs: ScreenXY[]): void;
    /**
     * 获取包络矩形
     * @param {ScreenXY[]} screenXYs - 线对应坐标点的屏幕坐标集合
     */
    getScreenBounds(screenXYs: ScreenXY[]): ScreenBounds;
}