GMap.NET.Core/GMap.NET.MapProviders/BingMapProvider.cs

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namespace GMap.NET.MapProviders
{
   using System;
   using System.Text;
   using GMap.NET.Projections;
   using System.Diagnostics;
   using System.Net;
   using System.IO;
   using System.Text.RegularExpressions;
   using System.Threading;
   using GMap.NET.Internals;

   public abstract class BingMapProviderBase : GMapProvider
   {
      public BingMapProviderBase()
      {
         MaxZoom = null;
         RefererUrl = "http://www.bing.com/maps/";
         Copyright = string.Format("©{0} Microsoft Corporation, ©{0} NAVTEQ, ©{0} Image courtesy of NASA", DateTime.Today.Year);
      }

      public string Version = "845";

      /// <summary>
      /// Bing Maps Customer Identification, more info here
      /// http://msdn.microsoft.com/en-us/library/bb924353.aspx
      /// </summary>
      public string ClientKey = null;

      /// <summary>
      /// Converts tile XY coordinates into a QuadKey at a specified level of detail.
      /// </summary>
      /// <param name="tileX">Tile X coordinate.</param>
      /// <param name="tileY">Tile Y coordinate.</param>
      /// <param name="levelOfDetail">Level of detail, from 1 (lowest detail)
      /// to 23 (highest detail).</param>
      /// <returns>A string containing the QuadKey.</returns>
      internal string TileXYToQuadKey(long tileX, long tileY, int levelOfDetail)
      {
         StringBuilder quadKey = new StringBuilder();
         for(int i = levelOfDetail; i > 0; i--)
         {
            char digit = '0';
            int mask = 1 << (i - 1);
            if((tileX & mask) != 0)
            {
               digit++;
            }
            if((tileY & mask) != 0)
            {
               digit++;
               digit++;
            }
            quadKey.Append(digit);
         }
         return quadKey.ToString();
      }

      #region GMapProvider Members