Module cache

Tile caching (creation, caching and retrieval of tiles).

Class Hierarchy for CacheManager

Class Hierarchy for _TileCreator

Class Hierarchy for TileSource

Schematic Call Graph

Classes

BlankImage

Cache
Easy access to images from cached tiles.

CacheManager
Manages tile cache and tile creation.

FileCache
This class is responsible to store and load the actual tile data.

_TileCreator
Base class for the creation of new tiles.

_SequentialTileCreator
This _TileCreator creates one requested tile after the other.

_ThreadedTileCreator
This _TileCreator creates one requested tile after the other.

TileSource
Base class for tile sources.

_Tile
Internal data object for all tiles.

Functions

_create_dir(file_name)

source code

sequential_tile_creator(tiles, tile_collection, tile_source, cache)
This tile creator creates a thread pool to create multiple tiles in parallel.

source code

threaded_tile_creator(tiles, tile_collection, tile_source, cache)
This tile creator creates a thread pool to create multiple tiles in parallel.

source code

Variables

log = logging.getLogger(__name__)