import { Stop } from '../stops/stops.js';
import { StopsIndex } from '../stops/stopsIndex.js';
import { GeneratedTransfers, TransferGenerator } from './generator.js';
export type StraightLineTransferGeneratorOptions = {
    /**
     * Maximum straight-line distance between two stops for a transfer to be generated, in meters.
     */
    maxDistanceMeters?: number;
    /**
     * Assumed pedestrian walking speed, in kilometers per hour.
     */
    walkingSpeedKmh?: number;
    /**
     * Multiplier applied to the straight-line distance to approximate the real
     * walking path length. Use 1 to disable.
     */
    detourFactor?: number;
    /**
     * Flat penalty, in minutes, added to every generated transfer to account for
     * the general overhead of changing (orientation, walking through the
     * station). Use 0 to disable.
     */
    changePenaltyMinutes?: number;
};
/**
 * A {@link TransferGenerator} that connects geographically close stops with
 * virtual walking transfers.
 *
 * The transfer time is derived from the straight-line (great-circle / haversine)
 * distance between two stops, scaled up by a detour factor to approximate the
 * real walking path and divided by an assumed walking speed. This is a
 * deliberately crude heuristic meant to fill in footpaths for feeds that
 * under-specify `transfers.txt` (e.g. large interchanges where subway, tram and
 * bus stops sit close together but are left unconnected).
 *
 * Generated transfers use {@link TransferTypes.REQUIRES_MINIMAL_TIME} so they
 * are treated as walking connections by both the router's transfer step and
 * its access/egress computation. Each origin is connected to its nearby stops
 * with a single directed edge; the reverse edge is produced when the neighbor
 * is itself visited as an origin.
 *
 * On top of the walking time, a flat `changePenaltyMinutes` is added for the
 * general overhead of any change. It is symmetric, so the two directions of a
 * transfer share the same minimum time.
 */
export declare class StraightLineTransferGenerator implements TransferGenerator {
    private readonly maxDistanceMeters;
    private readonly walkingSpeedKmh;
    private readonly detourFactor;
    private readonly changePenaltyMinutes;
    constructor(options?: StraightLineTransferGeneratorOptions);
    generate(originStops: Stop[], stops: StopsIndex): GeneratedTransfers;
    private addTransfer;
    /**
     * Estimates the walking time between two coordinates, in whole minutes.
     */
    private walkingDuration;
}