/// <summary>
/// Draws the route's polyline on the map and lays down map markers which correspond to the route's stops.
/// </summary>
private void DrawRouteAndItsStopsOnMap(Route route)
{
// Clear out anything else, otherwise we end up with one ugly map.
RouteMap.MapElements.Clear();
DrawRoutePolyline(route);
var stopsInRoute = route.Path.Select(p => StopLookup[p]);
var routeCenter = new BasicGeoposition()
{
// Best attempt to center the route on the page is to average Lat/Longs
Latitude = stopsInRoute.Select(s => s.Lat).Average(),
Longitude = stopsInRoute.Select(s => s.Long).Average()
};
Task.Run(() => RouteMap.TrySetViewAsync(new Geopoint(routeCenter), 14, 0, 0, MapAnimationKind.Bow));
foreach (var stopId in route.Path)
{
var pin = new MapIcon()
{
Location = new Geopoint(new BasicGeoposition()
{
Latitude = StopLookup[stopId].Lat,
Longitude = StopLookup[stopId].Long
})
};
RouteMap.MapElements.Add(pin);
}
}
/// <summary>
/// Draws the route's GoogleMaps polyline on the map.
/// </summary>
private void DrawRoutePolyline(Route route)
{
var polyLine = new MapPolyline();
polyLine.Path = new Geopath(route.PolyLinePositions);
// Taken from here: http://stackoverflow.com/a/5800540
uint argb = uint.Parse(route.Color.Replace("#", ""), NumberStyles.HexNumber);
byte r = (byte)((argb & 0xff0000) >> 0x10);
byte g = (byte)((argb & 0xff00) >> 8);
byte b = (byte)(argb & 0xff);
polyLine.StrokeColor = Color.FromArgb(/* Just make it 100% */ 0xAA, r, g, b);
polyLine.StrokeThickness = 5;
RouteMap.MapElements.Add(polyLine);
}
/// <summary>
/// Handles displaying a route on a map when one of the routes is clicked in the Nav Menu.
/// </summary>
private void NavMenuList_ItemInvoked(object sender, ListViewItem e)
{
var list = sender as NavMenuListView;
if (list == null)
{
// Sweep this problem under the rug by failing silently.
return;
}
var route = (sender as NavMenuListView)?.ItemFromContainer(e) as Route;
if (route == null)
{
// Sweep this problem under the rug by failing silently.
return;
}
SelectedRoute = route;
if (route.Path != null && route.Path.Any())
{
DrawRouteAndItsStopsOnMap(route);
}
}
