ZoomTilesBorderVerticesCache Class Reference

Cache to store/reuse the vertices at the borders for tiles that have been already constructed for a given zoom. More...

#include <zoom_tiles_border_vertices_cache.h>

Public Member Functions
	ZoomTilesBorderVerticesCache (const ctb::TileBounds &zoomBounds, const int &tileMaxCoord)
	ZoomTilesBorderVerticesCache ()
bool	getConstrainedBorderVerticesForTile (const int &tileX, const int &tileY, BordersData &bd)
bool	setConstrainedBorderVerticesForTile (const int &tileX, const int &tileY, const std::vector< Point_3 > &easternVerticesToPreserve, const std::vector< Point_3 > &westernVerticesToPreserve, const std::vector< Point_3 > &northernVerticesToPreserve, const std::vector< Point_3 > &southernVerticesToPreserve)
int	numCacheEntries ()
bool	isTileVisited (const int &tileX, const int &tileY)
bool	isTileVisited (const std::pair< int, int > &tileInd)
	Checks if a tile is visited. More...
bool	isTileBeingProcessed (const int &tileX, const int &tileY)
	Checks if a tile is being processed. More...
bool	isTileBeingProcessed (const std::pair< int, int > &tileInd)
	Checks if a tile is being processed. More...
bool	canTileStartProcessing (const int &tileX, const int &tileY)
	Checks if a tile can start processing. More...
bool	allTilesProcessed () const
	Checks if all the tiles in the zoom have been processed.
int	getNumProcessed () const
	Gets the number of processed tiles.
int	getNumTiles () const
	Gets the total amount of tiles to be processed in the zoom.

Detailed Description

Cache to store/reuse the vertices at the borders for tiles that have been already constructed for a given zoom.

Once the information of a tile is no longer required, it is erased from this cache.

Constructor & Destructor Documentation

ZoomTilesBorderVerticesCache() [1/2]

ZoomTilesBorderVerticesCache::ZoomTilesBorderVerticesCache ( const ctb::TileBounds &  zoomBounds, const int &  tileMaxCoord  )

inline

Constructor

Parameters

zoomBounds	The bounds of the current zoom
tileMaxCoord	The number of pixels in a tile

ZoomTilesBorderVerticesCache() [2/2]

ZoomTilesBorderVerticesCache::ZoomTilesBorderVerticesCache ( )

inline

Default Constructor

Member Function Documentation

canTileStartProcessing()

bool ZoomTilesBorderVerticesCache::canTileStartProcessing	(	const int &	tileX,
		const int &	tileY
	)

Checks if a tile can start processing.

Parameters

tileX	X coordinate of the tile
tileY	Y coordinate of the tile

Returns

boolean indicating whether a tile can start processing

getConstrainedBorderVerticesForTile()

bool ZoomTilesBorderVerticesCache::getConstrainedBorderVerticesForTile	(	const int &	tileX,
		const int &	tileY,
		BordersData &	bd
	)

Given a tile, it gets the border edges to preserve from already constructed tiles. It also cleans up unnecessary data and marks the tile as "being processed", so that neighboring tiles cannot start processing until this one has finished.

Parameters

tileX	The X coordinate of the tile to construct
tileY	The Y coordinate of the tile to construct
bd	Tile's borders' data to be maintained for this tile based on the info in the cache

isTileBeingProcessed() [1/2]

bool ZoomTilesBorderVerticesCache::isTileBeingProcessed ( const int &  tileX, const int &  tileY  )

inline

Checks if a tile is being processed.

WARNING: Does not perform bounds check for the tile

Parameters

tileX	X coordinate of the tile
tileY	Y coordinate of the tile

Returns

boolean indicating whether the tile was already processed

isTileBeingProcessed() [2/2]

bool ZoomTilesBorderVerticesCache::isTileBeingProcessed ( const std::pair< int, int > &  tileInd )

inline

Checks if a tile is being processed.

WARNING: Does not perform bounds check for the tile

Parameters

tileInd

Tile index (a pair)

Returns

boolean indicating whether the tile was already processed

isTileVisited()

bool ZoomTilesBorderVerticesCache::isTileVisited ( const std::pair< int, int > &  tileInd )

inline

Checks if a tile is visited.

WARNING: Does not perform bounds check for the tile

Parameters

tileInd

Tile index (a pair)

Returns

boolean indicating whether the tile was already visited

numCacheEntries()

int ZoomTilesBorderVerticesCache::numCacheEntries ( )

inline

Get the number of cache entries

Returns

Number of cache entries

setConstrainedBorderVerticesForTile()

bool ZoomTilesBorderVerticesCache::setConstrainedBorderVerticesForTile	(	const int &	tileX,
		const int &	tileY,
		const std::vector< Point_3 > &	easternVerticesToPreserve,
		const std::vector< Point_3 > &	westernVerticesToPreserve,
		const std::vector< Point_3 > &	northernVerticesToPreserve,
		const std::vector< Point_3 > &	southernVerticesToPreserve
	)

Stores the borders to preserve for a given tile in the cache. Note that the eastern/western/northern/southern vectors already include the corners, so we don't set them separately as opposed to getConstrainedBorderVerticesForTile

Parameters

tileX	The X coordinate of the tile
tileY	The Y coordinate of the tile
easternVerticesToPreserve	Eastern vertices to preserve for the tile
westernVerticesToPreserve	Western vertices to preserve for the tile
northernVerticesToPreserve	Southern vertices to preserve for the tile
southernVerticesToPreserve	Northern vertices to preserve for the tile

Returns

---

The documentation for this class was generated from the following files:

• /mnt/Raid1Ext/EMODNET/Code/src/base/zoom_tiles_border_vertices_cache.h
• /mnt/Raid1Ext/EMODNET/Code/src/base/zoom_tiles_border_vertices_cache.cpp