deriveRectangleAndScheme()

function deriveRectangleAndScheme(
   crs, 
   xyLimits, 
   levelMetadata, 
   zarrArray, 
   dimIndices): object;

Computes a Cesium Rectangle and TilingScheme for a Zarr dataset.

Parameters

Parameter	Type	Description
`crs`	`CRS`	CRS code (`EPSG:4326` or `EPSG:3857`). See CRS.
`xyLimits`	`XYLimitsProps`	Min/max X/Y values in the dataset's CRS. See XYLimitsProps.
`levelMetadata`	`Map`<`number`, `ZarrLevelMetadata`>	Per-resolution metadata (width/height).
`zarrArray`	`Array`<`any`>	The Zarr array containing the data.
`dimIndices`	`DimIndicesProps`	Mapping of dimension keys to their array indices. See DimIndicesProps.

object

{ rectangle, tilingScheme }

rectangle: Rectangle;

tilingScheme: TilingScheme;

Behavior notes:

The rectangle is expanded by half a pixel in all directions to avoid edge clipping.
Pixel resolution is estimated from either levelMetadata.get(0) or the Zarr array shape.
For EPSG:3857, the function interprets xyLimits as Web Mercator meters and uses WebMercatorProjection.unproject to obtain geographic radians.
If any computation fails, the function falls back to a full-world tiling scheme (WebMercator or Geographic).
If latitude limits are reversed, they are swapped automatically.