open_route_service 1.2.8

A Dart and Flutter client for openrouteservice directions, isochrones, matrices, geocoding, points of interest, elevation, and route optimization.

open_route_service

A Dart and Flutter client for openrouteservice directions, isochrones, matrices, geocoding, points of interest, elevation, and route optimization.

The package provides typed request and response models around the openrouteservice API for Dart and Flutter projects.

Contribute to openrouteservice API by donating to help keep the service free and accessible to everyone. For more information about the API, view the openrouteservice API documentation.

Contents

• open_route_service
  • Contents
  • Features
  • Prerequisites
  • Installation
  • Usage
    • Example Usage
  • Security
  • Contribution Guidelines
  • Dependencies
  • Additional information
    • Sponsor Message
  • License

Features

The goal is to develop an all-encompassing package that can encapsulate everything openrouteservice API offers.

With all of their internal Optimizations, this includes:

1. Directions: Route Generation between any two or more coordinates for any mode of transportation. For example, from a starting point to a destination on 'foot-walking'.

   E.g. ORSDirections.directionsRouteCoordsGet gives a List of ORSCoordinate which can then be easily used to draw a Polyline route on a map in a Flutter Application or anything else you can think of.

   Route Drawn on Flutter App Map using Coordinates

2. Elevation: Get the elevation of a coordinate, or a list of coordinates. Fetches the ElevationData by taking a 2D ORSCoordinate or planar line geometry, and enriching it with elevation from a variety of datasets.

   Elevation Response Received

3. Isochrones: Obtain Isochrone (areas of reachability) Data for the locations given. The isochrone is a polygon that encloses a given point and is bounded by a given time.

   The isochrone data can be used to draw them on a map in a Flutter Application, or anything else you can think of.

   Isochrone Drawn on Map

4. Time-Distance Matrix: Obtain one-to-many, many-to-one and many-to-many matrices for time and distance. Returns duration or distance matrix for multiple source and destination points.

5. Pelias Geocoding: Resolve input coordinates to addresses and vice versa. Provides functionality for geocoding autocomplete queries, search queries, and reverse geocoding.

   Reverse Geocoding Information used on Map

6. POIs: Obtains information about the Points of Interest (POIs) in the area surrounding a geometry which can either be a bounding box, polygon or buffered linestring, or point.

   The Points of Interest can be marked on a map in a Flutter Application, or their properties and information visualized in various ways, or anything else you can think of.

   Points of Interest Drawn on Map

7. Routing Optimizations: The optimization endpoint solves Vehicle Routing Problems and can be used to schedule multiple vehicles and jobs, respecting time windows, capacities and required skills.

   This service is based on the excellent Vroom project. Please also consult its API documentation.

   Optimization Data for Vroom Jobs and Vehicles extracted and their route information printed in Console

Appropriate tests have also been written for each of the above APIs and can be used to check if the package and/or API are functioning properly.

Prerequisites

• Dart 3.0 or a Flutter SDK that includes Dart 3.0 or later.
• An openrouteservice API key.

Installation

Run dart pub add open_route_service or flutter pub add open_route_service in your Dart/Flutter project directory to install the package.

Usage

1. Import the package where needed:

   import 'package:open_route_service/open_route_service.dart';
   

2. Create a new instance of the class with your openrouteservice API Key:

   OpenRouteService openrouteservice = OpenRouteService(apiKey: 'YOUR-API-KEY');
   

3. Use the handy class methods to easily generate Directions, Isochrones, Time-Distance Matrix, Pelias Geocoding, POIs, Elevation and routing Optimizations etc, letting the package handle all the complex HTTP requests in the background for you.

Example Usage

To use the package with the Directions API to generate and draw a Route on a map in a Flutter application:

import 'package:open_route_service/open_route_service.dart';

Future<void> main() async {
  // Initialize the openrouteservice with your API key.
  final OpenRouteService client = OpenRouteService(apiKey: 'YOUR-API-KEY');

  // Example coordinates to test between
  const double startLat = 37.4220698;
  const double startLng = -122.0862784;
  const double endLat = 37.4111466;
  const double endLng = -122.0792365;

  // Form Route between coordinates
  final List<ORSCoordinate> routeCoordinates = await client.directionsRouteCoordsGet(
    startCoordinate: ORSCoordinate(latitude: startLat, longitude: startLng),
    endCoordinate: ORSCoordinate(latitude: endLat, longitude: endLng),
  );

  // Print the route coordinates
  routeCoordinates.forEach(print);

  // Map route coordinates to a list of LatLng (requires google_maps_flutter package)
  // to be used in the Map route Polyline.
  final List<LatLng> routePoints = routeCoordinates
      .map((coordinate) => LatLng(coordinate.latitude, coordinate.longitude))
      .toList();

  // Create Polyline (requires Material UI for Color)
  final Polyline routePolyline = Polyline(
    polylineId: PolylineId('route'),
    visible: true,
    points: routePoints,
    color: Colors.red,
    width: 4,
  );

  // Use Polyline to draw route on map or do anything else with the data :)
}

Security

Report vulnerabilities privately by following SECURITY.md. Do not include API keys or other credentials in issues, examples, or pull requests.

Contribution Guidelines

See CONTRIBUTING.md for the development workflow and test requirements. Use GitHub issues for reproducible bugs and focused feature requests.

Dependencies

• Dart or Flutter, for the Dart SDK which this obviously runs on.
• http, for internally making RESTful HTTP Network requests to the API endpoints.

Additional information

• Please contribute to openrouteservice API by donating to help keep the service free and accessible to everyone.

• Go through the full documentation here: openrouteservice API Documentation.

• Reach out to me directly @dhi13man on Twitter or GitHub if you have any general questions or suggestions.

Sponsor Message

The first release of this package was sponsored by Cashtic, a Cross-Platform peer-to-peer ATM cash network for Android and Web. Get it on Google Play!

License

This package is available under the MIT License.