API Reference › core-frontend› Tiles › QuadId

QuadId Class

Identifies a node within a quad tree, such as a MapTile within a MapTileTree. A quad tree recursively sub-divides a two-dimensional space along the X and Y axes such that each node on level L has four child nodes on level L+1.

Methods

Name Description
constructor(level: number, column: number, row: number): QuadId Construct a new QuadId.  
bordersNorthPole(mapTilingScheme: MapTilingScheme): boolean Returns true if this node is adjacent to the north pole according to the specified tiling scheme.  
bordersSouthPole(mapTilingScheme: MapTilingScheme): boolean Returns true if this node is adjacent to the south pole according to the specified tiling scheme.  
compare(other: QuadId): number Compares this Id to another according to the conventions of an OrderedComparator.  
getChildIds(columnCount: number2, rowCount: number2): QuadId[] Compute the QuadIds corresponding to this node's four child nodes.  
getLatLongRangeDegrees(mapTilingScheme: MapTilingScheme): Range2d Compute the region of the surface of the Earth represented by this node according to the specified tiling scheme.  
getLatLongRangeRadians(mapTilingScheme: MapTilingScheme): Range2d Compute the region of the surface of the Earth represented by this node according to the specified tiling scheme.  
fromJSON(props: QuadIdProps): QuadId Static Creates a QuadId from a JSON representation  
toJSON(props: QuadIdProps): QuadIdProps Static Convert this QuadId to a JSON representation  

Properties

Name Type Description
column number The node's position along the X axis as a non-negative integer.  
level number The level of the node within the tree, increasing with each subdivision, as a non-negative integer.  
row number The node's position along the Y axis as a non-negative integer.  

Defined in

Last Updated: 27 June, 2025