# 3d-tiles-renderer/core: Constants

## Constants

### FAILED: number

Tile content failed to load. Sorted first for eviction by the LRU cache.

### UNLOADED: number

Tile content has not been requested.

### QUEUED: number

Tile content is queued for download.

### LOADING: number

Tile content is currently downloading.

### PARSING: number

Tile content has been downloaded and is being parsed.

### LOADED: number

Tile content has been parsed and is ready to display.

### WGS84_RADIUS: number

WGS84 ellipsoid semi-major axis radius in meters.
See the `WGS84 specification`.

### WGS84_FLATTENING: number

WGS84 ellipsoid flattening factor.
See `ellipsoid flattening`.

### WGS84_HEIGHT: number

WGS84 ellipsoid height offset (difference between equatorial and polar radii) in meters.