import { Vector2d } from "../math/vector2d.ts";
import { LineVertices, Polygon } from "./polygon.ts";
/**
 * a line segment Object
 * @category Geometry
 * @param x - origin point of the Line
 * @param y - origin point of the Line
 * @param points - array of vectors defining the Line
 */
export declare class Line extends Polygon {
    /**
     * Returns true if the Line contains the given point
     * @param x -  x coordinate or a vector point to check
     * @param [y] -  y coordinate
     * @returns true if contains
     * @example
     * if (line.contains(10, 10)) {
     *   // do something
     * }
     * // or
     * if (line.contains(myVector2d)) {
     *   // do something
     * }
     */
    contains(x: number, y: number): boolean;
    contains(vector: Vector2d): boolean;
    /**
     * Computes the calculated collision edges and normals.
     * This **must** be called if the `points` array, `angle`, or `offset` is modified manually.
     * @returns this instance for object chaining
     */
    recalc(): this;
    /**
     * clone this line segment
     * @returns new Line
     */
    clone(): Line;
}
export declare const linePool: import("../system/pool.ts").Pool<Line, [x: number, y: number, points: LineVertices]>;
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