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34 lines
858 B
34 lines
858 B
using System.Collections.Generic;
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using Mapbox.Map;
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using Mapbox.Utils;
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namespace Mapbox.Unity.Map.TileProviders
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{
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public class GlobeTileProvider : AbstractTileProvider
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{
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public override void OnInitialized()
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{
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_currentExtent.activeTiles = new HashSet<UnwrappedTileId>();
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}
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public override void UpdateTileExtent()
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{
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// HACK: don't allow too many tiles to be requested.
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if (_map.AbsoluteZoom > 5)
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{
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throw new System.Exception("Too many tiles! Use a lower zoom level!");
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}
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var tileCover = TileCover.Get(Vector2dBounds.World(), _map.AbsoluteZoom);
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foreach (var tile in tileCover)
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{
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_currentExtent.activeTiles.Add(new UnwrappedTileId(tile.Z, tile.X, tile.Y));
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}
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OnExtentChanged();
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}
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public override bool Cleanup(UnwrappedTileId tile)
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{
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return (!_currentExtent.activeTiles.Contains(tile));
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}
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}
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}
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