@three-tile/lib
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    Function getSafeTileUrlAndBounds

    • Get url and rect for max level tile to load greater than max level from source, had to load from max level. 因为瓦片数据并未覆盖所有级别瓦片,如MapBox地形瓦片最高只到15级,如果要显示18级以上瓦片,不能从17级瓦片中获取,只能从15级瓦片里截取一部分

      Parameters

      • source: ISource
      • x: number
      • y: number
      • z: number

      Returns { clipBounds: [number, number, number, number]; url: string | undefined }

      max tile url and bounds in in maxTile