import { Vector2 } from 'three';
/**
 * A very primitive 2D binary array interface.
 */
export interface BinaryArrayView2D {
    width: number;
    height: number;
    get(pos: Vector2): boolean;
    set(val: boolean, pos: Vector2): void;
}
/**
 * A very primitive 2D array implementation which consumes 1 byte per pixel.
 * Usable, but basically for testing purposes.
 */
export declare class BinaryArray2D implements BinaryArrayView2D {
    private data;
    width: number;
    height: number;
    constructor(width: number, height: number);
    get(pos: Vector2): boolean;
    set(val: boolean, pos: Vector2): void;
    toString(): string;
}
/**
 * Performs flood-fill on a 2D array represented by BinaryArrayView2D.
 * @return The number of pixels filled.
 */
export default function floodFill(grid: BinaryArrayView2D, center: Vector2): number;