Class TileIndexExtensions

Extension methods for BruTile.TileIndex.

Inheritance

object

TileIndexExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Mapsui.Tiling.Extensions

Assembly: Mapsui.Tiling.dll

Syntax

public static class TileIndexExtensions

Methods

ToLong(TileIndex)

Encodes a BruTile.TileIndex into a single long value. This is useful for using tile indices as dictionary keys or cache identifiers.

Declaration

public static long ToLong(this TileIndex index)

Parameters

Type	Name	Description
TileIndex	index	The tile index to encode.

Returns

Type	Description
long	A long value uniquely representing the tile index.

Remarks

Bit layout (64 bits total):

• Bits 0-27 (28 bits): Row - supports up to 268 million tiles per axis
• Bits 28-55 (28 bits): Col - supports up to 268 million tiles per axis
• Bits 56-63 (8 bits): Level - supports zoom levels 0-255

This encoding supports tile coordinates far beyond any practical map zoom level (web maps typically max out around level 22-24).

ToTileIndex(long)

Decodes a long value back into a BruTile.TileIndex. This is the inverse of ToLong(TileIndex).

Declaration

public static TileIndex ToTileIndex(this long value)

Parameters

Type	Name	Description
long	value	The encoded tile index value.

Returns

Type	Description
TileIndex	The decoded tile index.