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[core] Support a range of zooms in TileRange #11227
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tmpsantos
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…d requesting parent tiles of ideal zoom tiles.
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Closes #11213.
Closes #11209.
While panning, tiles may be pre-fetched at a lower zoom level than the current zoom. The
TileRangeclass and its use inTilePyramidincorrectly assumed that all tiles created are at a single fixed zoom level.This PR allows a single instance of
TileRangeto be used inTilePyramidwith a range of tile zooms, to support loading parent tiles for pre-fetching. I updated the tile range checking to be inclusive of min and max to support the case where the tile range narrows to a single value for lower zoom levels.