Enumeration HrzProtocol.MissingTilePolicy

Defined in hrz/protocol/tile.proto.

This enum defines the behaviour of a tiles providers when a tile can’t be retrieved.

USE_LOWER_RESOLUTION (0)

This will go up the hierarchy to look for a lower-resolution tile to replace the missing one with. If none is found, it has the same behaviour as USE_EMPTY_TILE.

USE_EMPTY_TILE (1)

This will produce an empty tile depending on the format. Empty tiles are essentially transparent: whatever available raster tile is below them is their group will be used instead.