//Plots routes on the map
public static void plotRoute(JObject response, MapboxMap map, int count, int[] colors)
{
//Parses the routes from the response into a list of points, stores all routes in a list
List <List <double[]> > routes = OtpAPI.GetRoutePoints(response);
//Handles case in which there are no routes to the destination
if (routes.Count() == 0)
{
//TODO: Show message to user that no routes are possible
}
//Iterates over the routes in the response, plotting each one in a different color.
//The first route is plotted with full opacity, while the rest are 50% transparent.
for (int i = 0; i < Math.Min(routes.Count(), count); i++)
{
//Sets up a new polyline options object to be plotted on the map
var polylineOpts = new PolylineOptions();
//Adds each point in the route to the polyline
foreach (double[] point in routes[i])
{
polylineOpts.Add(new LatLng(point[0], point[1]));
}
//Set a dark thick line if it's the primary route
if (i == 0)
{
polylineOpts.SetAlpha(1F);
polylineOpts.SetWidth(5F);
}
//Set a lighter, thinner, line if it's a secondary one
else
{
polylineOpts.SetAlpha(.5F);
polylineOpts.SetWidth(3F);
}
//Sets the color according to the set in the colors field
polylineOpts.SetColor(colors[i % 3]);
//Plots the polyline on the map
map.AddPolyline(polylineOpts);
}
}
