/**
 * Flat 2D point array. Stores [x0, y0, x1, y1, ...] internally,
 * eliminating per-point array allocations.
 */
export class Points {
    /**
     * Create a Points from 4 coordinate pairs (the common quad case).
     * @param {number} x0
     * @param {number} y0
     * @param {number} x1
     * @param {number} y1
     * @param {number} x2
     * @param {number} y2
     * @param {number} x3
     * @param {number} y3
     * @returns {Points}
     */
    static quad(x0: number, y0: number, x1: number, y1: number, x2: number, y2: number, x3: number, y3: number): Points;
    /** @param {number[]} data — flat [x0, y0, x1, y1, ...] */
    constructor(data: number[]);
    data: number[];
    /** Number of points. */
    get length(): number;
    /**
     * X coordinate of point i.
     * @param {number} i
     * @returns {number}
     */
    x(i: number): number;
    /**
     * Y coordinate of point i.
     * @param {number} i
     * @returns {number}
     */
    y(i: number): number;
    /**
     * Iterate [x, y] pairs. Convenient for non-hot-path code;
     * prefer x(i)/y(i) accessors in performance-critical loops.
     * @returns {Iterator<[number, number]>}
     */
    [Symbol.iterator](): Iterator<[number, number]>;
}