import { Box2, Vector2 } from 'three';
/**
 * Slightly expands this rect so that it contains the original and all the vertexes are integers.
 * @param box The input Box2.
 */
export declare function box2GrowSubpixel(box: Box2): Box2;
/**
 * Scales the inner box as large as possible inside the outer rectangle,
 * maintaining the aspect ratio. The inner box will be placed at the center.
 * @param outer The outer box to which the inner rectangle is being fit.
 * @param inner The inner box.
 */
export declare function fitRectangle(outer: Vector2, inner: Vector2): Box2;