import { ShapePrimitive } from './shape-primitive';
import type { PointData } from './point-data';
/**
 * A class to define a shape via user defined coordinates.
 */
export declare class Polygon extends ShapePrimitive {
    /**
     * An array of the points of this polygon.
     */
    points: number[];
    /**
     * `false` after moveTo, `true` after `closePath`. In all other cases it is `true`.
     */
    closePath: boolean;
    constructor(points: PointData[] | number[]);
    constructor(...points: PointData[] | number[]);
    /**
     * Creates a clone of this polygon.
     * @returns - A copy of the polygon.
     */
    clone(): Polygon;
    /**
     * Checks whether the x and y coordinates passed to this function are contained within this polygon.
     * @param x - The X coordinate of the point to test.
     * @param y - The Y coordinate of the point to test.
     * @returns - Whether the x/y coordinates are within this polygon.
     */
    contains(x: number, y: number): boolean;
    /**
     * Copies another polygon to this one.
     * @param polygon - The polygon to copy from.
     * @returns Returns itself.
     */
    copyFrom(polygon: Polygon): this;
    /**
     * Copies this polygon to another one.
     * @param polygon - The polygon to copy to.
     * @returns Returns given parameter.
     */
    copyTo(polygon: Polygon): Polygon;
    /**
     * Get the last X coordinate of the polygon
     * @readonly
     */
    get lastX(): number;
    /**
     * Get the last Y coordinate of the polygon
     * @readonly
     */
    get lastY(): number;
    /**
     * Get the first X coordinate of the polygon
     * @readonly
     */
    getX(): number;
    /**
     * Get the first Y coordinate of the polygon
     * @readonly
     */
    getY(): number;
    build(points: number[]): void;
    triangulate(points: number[], vertices: number[], verticesOffset: number, indices: number[], indicesOffset: number): void;
    /**
     * 获取直线上最远的两个端点坐标组成的三角形
     */
    private getLineEndPointsTriangle;
}