esegece.sgcMaps.Avalonia.Community 2.0.0

sgcMaps for .NET

sgcMaps is a mapping toolkit for .NET: an offline maps model and geometry engine, a SkiaSharp rendering engine with headless PNG export, a Windows Forms map control, and offline routing / geocoding built from OpenStreetMap and GeoNames data. It mirrors the Delphi sgcMaps library, so tile caches, .sgcgraph route graphs and GeoNames indexes are file-compatible between the two.

Packages

Quick start

MapView: headless render to PNG

using esegece.sgcMaps;
using esegece.sgcMaps.Rendering;

var map = new MapView();
map.SetSize(800, 600);
map.Options.ShowZoomControls = false;

Layer layer = map.Layers.Add();
layer.Name = "osm";
layer.Provider = TileProvider.OpenStreetMap;
MapProviders.ApplyProvider(layer);
layer.CacheFolder = "tile_cache";

map.SetCenter(40.4168, -3.7038); // Madrid
map.Zoom = 13;
map.AddMarker(40.4168, -3.7038, "Madrid");

map.RenderToPng("madrid.png", 800, 600, tileTimeout: TimeSpan.FromSeconds(30));

SgcMapControl on a form

using esegece.sgcMaps;
using esegece.sgcMaps.WinForms;

var control = new SgcMapControl { Dock = DockStyle.Fill };

Layer layer = control.Layers.Add();
layer.Provider = TileProvider.OpenStreetMap;
MapProviders.ApplyProvider(layer);
layer.CacheFolder = "tile_cache";

control.CenterLatitude = 40.4168;
control.CenterLongitude = -3.7038;
control.Zoom = 13;

Marker marker = control.Markers.Add();
marker.Latitude = 40.4168;
marker.Longitude = -3.7038;
marker.PopupText = "Madrid";

var form = new Form();
form.Controls.Add(control);
Application.Run(form);

Geocoder (online, Nominatim by default)

using esegece.sgcMaps.Services;

var geocoder = new Geocoder();
IReadOnlyList<GeocodingResult> results = await geocoder.GeocodeAsync("Madrid, Spain");
foreach (GeocodingResult r in results)
    Console.WriteLine($"{r.DisplayName}: {r.Latitude}, {r.Longitude}");

Directions (online, OSRM by default)

using esegece.sgcMaps;
using esegece.sgcMaps.Services;

var directions = new Directions(); // OSRM by default
var waypoints = new[]
{
    new MapCoord(40.4168, -3.7038),
    new MapCoord(40.4153, -3.6844)
};
IReadOnlyList<Route> routes = await directions.GetRouteAsync(waypoints);
Route route = routes[0];
Console.WriteLine($"{route.Distance / 1000:F2} km, {route.Duration / 60:F0} min");

OfflineRouter (no network, built from a .osm.pbf extract)

using esegece.sgcMaps;
using esegece.sgcMaps.Offline;
using esegece.sgcMaps.Services;

// build the graph once, offline, from a .osm.pbf extract
var builder = new RouteGraphBuilder();
builder.Build("andorra-latest.osm.pbf", "andorra.sgcgraph");

using var router = new OfflineRouter("andorra.sgcgraph");
router.Profile = OfflineRouterProfile.Car;
router.Open();

var route = new Route();
bool ok = router.GetRoute(route, new MapCoord(42.5063, 1.5218), new MapCoord(42.5350, 1.5807));
Console.WriteLine(ok
    ? $"{route.Distance / 1000:F2} km, {route.Duration / 60:F0} min"
    : router.LastError);

Editions

Every package ships in two editions. The Registered packages use the ids above. The free Community edition uses the same ids with a .Community suffix (esegece.sgcMaps.Community, esegece.sgcMaps.Rendering.Community, esegece.sgcMaps.WinForms.Community) and does not include the offline pack: the tile downloader, the MBTiles tile source (raster and vector MBTiles) and the esegece.sgcMaps.Offline package, which has no Community package.

License

Registered edition: commercial license, see LICENSE.txt. Community edition: see LICENSE-Community.txt. More at https://www.esegece.com