public async static Task <Bitmap> GetSquareAsync(int row, int column, int zoom)
{
Bitmap bitmapImage;
try
{
var requesParams = new MapVieArgs()
{
Zoom = zoom,
Column = column,
Row = row
};
string target = CreateUrl(requesParams);
using (var response = await client.GetAsync(target))
{
response.EnsureSuccessStatusCode();
using (Stream stream = await response.Content.ReadAsStreamAsync())
{
bitmapImage = new Bitmap(stream);
}
}
return(bitmapImage);
}
catch
{
throw;
}
}
/// <summary>
/// Create URL for HERE REST API
/// </summary>
/// <param name="args"></param>
/// <param name="type"></param>
/// <returns>Returns null on bad arguments or ready to use URL</returns>
private static string CreateUrl(MapVieArgs args)
{
int balancedServer = 1 + ((args.Row + args.Column) % 4);
string baseUrl = $"https://{balancedServer}.base.maps.api.here.com";
string apiVersion = "maptile/2.1";
string resource = "maptile";
string mapVersion = "newest";
string viewScheme = "normal.day";
string zoom = args.Zoom.ToString();
string column = args.Column.ToString();
string row = args.Row.ToString();
string size = args.Size.ToString();
string format = "png8";
string credentialParameters = $"?app_id={Credentials.AppId}&app_code={Credentials.AppCode}";
string res =
$"{baseUrl}/{apiVersion}/{resource}/{mapVersion}/{viewScheme}/" +
$"{zoom}/{column}/{row}/{size}/{format}" +
credentialParameters;
return(res);
}
