import { ScreenBounds } from "../common/screen-bounds";
import { ScreenXY } from "../common/screen-xy";
import { PointSymbol } from "./symbol";
/**
 * 形状点符号（正多边形）
 */
export declare class ShapeSymbol extends PointSymbol {
    /**
     * 圆点半径，像素值
    */
    radius: number;
    /**
     * 边数
    */
    sides: number;
    /**
     * 旋转度数
    */
    angle: number;
    /**
     * 旋转弧度
    */
    get radian(): number;
    /**
     * 绘制点（虚函数）
     * @param {CanvasRenderingContext2D} ctx - 绘图上下文
     * @param {ScreenXY} screenXY - 屏幕坐标
     */
    draw(ctx: CanvasRenderingContext2D, screenXY: ScreenXY): void;
    /**
     * 获取包络矩形
     * @param {ScreenXY} screenXY - 屏幕坐标
     */
    getScreenBounds(screenXY: ScreenXY): ScreenBounds;
}