WebMercatorTile

A Web Mercator map tile descriptor containing coordinates, zoom level, and display settings. More...

Collaboration diagram for WebMercatorTile:

Public Types
enum class	DPI : uint04 { e_low = 1 , e_high = 2 , e_auto }
	Dots-per-inch setting for tile rendering. More...
enum class	Resolution : uint04 { e_low_256 = 1 , e_high_512 = 2 }
	Pixel resolution of a single map tile. More...

Public Member Functions
	WebMercatorTile ()
	Default constructor.
	WebMercatorTile (uint04 x, uint04 y, uint04 zoom, Resolution resolution, DPI dpi, bool include_labels)
	Constructs a tile with explicit coordinates and display settings.
UUID	getUUID (UUID parent_id) const
	Generates a deterministic UUID for this tile relative to a parent identifier.

Static Public Member Functions
static uint04	convertResolutionToPixels (Resolution resolution)
	Converts a Resolution enum value to its pixel dimension.

Public Attributes
DPI	dpi = DPI::e_low
	DPI setting for tile rendering.
String	language
	Language code for tile labels (e.g. "en").
Resolution	resolution = Resolution::e_low_256
	Pixel resolution of the tile.
Vector< 2, uint04 >	tile = Vector<2, uint04>(0U)
	Tile column (X) and row (Y) indices.
uint04	zoom = 0
	Map zoom level.

Detailed Description

A Web Mercator map tile descriptor containing coordinates, zoom level, and display settings.

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Definition at line 80 of file MercatorImageManager.h.

Member Enumeration Documentation

DPI

enum class WebMercatorTile::DPI : uint04

strong

Dots-per-inch setting for tile rendering.

Enumerator
e_low	Standard (1x) DPI.
e_high	High (2x / Retina) DPI.
e_auto	Automatically select DPI based on device.

Definition at line 83 of file MercatorImageManager.h.

Resolution

enum class WebMercatorTile::Resolution : uint04

strong

Pixel resolution of a single map tile.

Enumerator
e_low_256	256x256 pixel tiles
e_high_512	512x512 pixel tiles

Definition at line 91 of file MercatorImageManager.h.

Constructor & Destructor Documentation

WebMercatorTile()

WebMercatorTile::WebMercatorTile	(	uint04	x,
		uint04	y,
		uint04	zoom,
		Resolution	resolution,
		DPI	dpi,
		bool	include_labels )

Constructs a tile with explicit coordinates and display settings.

Parameters

[in]	x	The tile column index.
[in]	y	The tile row index.
[in]	zoom	The zoom level.
[in]	resolution	The tile pixel resolution.
[in]	dpi	The DPI setting.
[in]	include_labels	Whether to include text labels on the tile.

References dpi, resolution, and zoom.

Member Function Documentation

convertResolutionToPixels()

uint04 WebMercatorTile::convertResolutionToPixels ( Resolution resolution )

static

Converts a Resolution enum value to its pixel dimension.

Parameters

[in]

resolution

The resolution to convert.

Returns

The pixel width/height (e.g. 256 or 512).

References resolution.

getUUID()

UUID WebMercatorTile::getUUID

(

UUID

parent_id

)

const

Generates a deterministic UUID for this tile relative to a parent identifier.

Parameters

[in]

parent_id

The parent UUID to combine with tile parameters.

Returns

A UUID uniquely identifying this tile within the given parent context.

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The documentation for this struct was generated from the following file:

• Design/Headers/MercatorImageManager.h