PTV Group - Logistics Forum

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/// <summary>
        /// Add a HERE layer to the layers collection of the map.
        /// </summary>
        /// <param name="layers">The layers collection.</param>
        /// <param name="type">The basic map type.</param>
        /// <param name="scheme">The scheme of the map.</param>
        /// <param name="appId">The application id.</param>
        /// <param name="token">The token.</param>
        public static void AddHereLayer(this LayerCollection layers, HereType type, HereScheme scheme, string appId, string token)
        {
            string schemeString = Regex.Replace(scheme.ToString(), "[a-z][A-Z]", m => m.Value[0] + "." + m.Value[1]).ToLower();
            string baseString = scheme == Here.HereScheme.SatelliteDay || scheme == Here.HereScheme.TerrainDay ? "aerial" : "base";
            string typeString = type.ToString().ToLower();
            string caption = type == HereType.StreetTile 
                ? "Streets" 
                : type == HereType.LabelTile ? "Labels" : "BaseMap";

            layers.Add(new TiledLayer("HERE_" + type)
            {
                Caption = caption,
                IsBaseMapLayer = type == HereType.MapTile || type == HereType.BaseTile,   // cannot be moved over content-layers
                IsLabelLayer = type == HereType.LabelTile || type == HereType.StreetTile, // uses tile-pruning for overlays
                TiledProvider = new RemoteTiledProvider
                {
                    MinZoom = 0,
                    MaxZoom = 20,
                    RequestBuilderDelegate = (x, y, level) =>
                    $"https://{"1234"[(x ^ y) % 4]}.{baseString}.maps.api.here.com/maptile/2.1/{typeString}/newest/{schemeString}/{level}/{x}/{y}/256/png8?app_id={appId}&token={token}",
                },
                Copyright = $"Map © 1987-{DateTime.Now.Year} HERE"
            });
        }