import { Tuple2 } from './tuple2';
import { Vector2 } from './vector2';
/**
 * A point with 2 coordinates: x and y.
 */
export declare class Point2 extends Tuple2 {
    constructor(x: number, y: number);
    /**
     * Returns the point q = p + v for this point p and the specified vector v.
     * @param v the vector v.
     * @returns the point q = p + v.
     */
    plus(v: Vector2): Point2;
    /**
     * Moves this point p by adding the specified vector v.
     * @param v the vector v.
     * @returns a reference to this point, moved along vector v.
     */
    plusEquals(v: Vector2): this;
    /**
     * Returns the point or vector q = p - v for this point p.
     * If v is a vector, q is a point translated along vector v.
     * If v is a point, q is the vector difference.
     * @param v the point or vector v.
     * @returns the vector or point q = p - v.
     */
    minus(v: Vector2 | Point2): Point2 | Vector2;
    /**
     * Moves this point by subtracting the specified vector v
     * @param v the vector v.
     * @returns a reference to this point, moved along vector v.
     */
    minusEquals(v: Vector2): this;
    /**
     * Returns an affine combination of this point p and the specified point q.
     * @param a the weight of the point q.
     * @param q the point q.
     * @returns the affine combination (1 - a) * p + a * q.
     */
    affine(a: number, q: Point2): Point2;
    /**
     * Computes the distance between this point p and the specified point q.
     * @param q the point q.
     * @returns the distance |q - p|.
     */
    distanceTo(q: Point2): number;
}