/**
 * @author Hector J. Vasquez <ipi.vasquez@gmail.com>
 *
 * @licence
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Coordinate } from '../../plotter/index';
export declare const K = 100;
/**
 * Edges are symmetrical, that is AB == BA. They have pheromones, a distance
 * saved in order to avoid constant recalculation.
 */
export interface Edge {
    pheromones: number;
    distance: number;
}
/**
 * Towns are defined by a location expressed as a coordinate, an array of
 * neighbors (which are every town in the world) ordered from the closest
 * neighbor to the furthest and a list of edges that connect to every other
 * town.
 */
export interface Town {
    location: Coordinate;
    neighbors: number[];
    edges: Edge[];
}
export declare class World {
    private debug;
    /**
     * Initializes this world with towns and edges from one town to another.
     * @param townsCoordinates The list of towns on this world.
     */
    constructor(townsCoordinates: Coordinate[]);
    private _towns;
    /**
     * Returns the list of towns in this world with his (x, y) locations.
     * @returns The towns in this world.
     */
    readonly towns: Town[];
    /**
     * Updates the quantity of pheromones per path by multiplying the current
     * amount of pheromones times evaporationRate.
     * @param evaporationRate Determines how fast the pheromones will evaporate.
     */
    evaporate(evaporationRate: number): void;
    /**
     * Resets the initial amount of pheromones on each edge between towns.
     */
    reset(): void;
    /**
     * Returns the requested path.
     * @param a The origin.
     * @param b The destination.
     * @returns Information about the path from a to b.
     */
    getEdge(a: number, b: number): Edge;
    /**
     * Calculates the euclidean distance between point a and point b; a & b
     * must be numbers within the limits of the towns array.
     * @param a The first town.
     * @param b The second town.
     * @returns The distance between a town and b town.
     */
    getDistance(a: number, b: number): number;
}