large_image_source_test package¶
Module contents¶
- class large_image_source_test.TestTileSource(*args, **kwargs)[source]¶
Bases:
TileSource
Initialize the tile class. See the base class for other available parameters.
- Parameters
ignored_path – for compatibility with FileTileSource.
minLevel – minimum tile level
maxLevel – maximum tile level
tileWidth – tile width in pixels
tileHeight – tile height in pixels
sizeX – image width in pixels at maximum level. Computed from maxLevel and tileWidth if None.
sizeY – image height in pixels at maximum level. Computed from maxLevel and tileHeight if None.
fractal – if True, and the tile size is square and a power of two, draw a simple fractal on the tiles.
frames – if present, this is either a single number for generic frames, or comma-separated list of c,z,t,xy.
monochrome – if True, return single channel tiles.
- cacheName = 'tilesource'¶
- classmethod canRead(*args, **kwargs)[source]¶
Check if we can read the input. This takes the same parameters as __init__.
- Returns
True if this class can read the input. False if it cannot.
- extensions = {None: 9}¶
A dictionary of known file extensions and the
SourcePriority
given to each. It must contain a None key with a priority for the tile source when the extension does not match.
- fractalTile(image, x, y, widthCount, color=(0, 0, 0))[source]¶
Draw a simple fractal in a tile image.
- Parameters
image – a Pil image to draw on. Modified.
x – the tile x position
y – the tile y position
widthCount – 2 ** z; the number of tiles across for a “full size” image at this z level.
color – an rgb tuple on a scale of [0-255].
- getInternalMetadata(**kwargs)[source]¶
Return additional known metadata about the tile source. Data returned from this method is not guaranteed to be in any particular format or have specific values.
- Returns
a dictionary of data or None.
- static getLRUHash(*args, **kwargs)[source]¶
Return a string hash used as a key in the recently-used cache for tile sources.
- Returns
a string hash value.
- getMetadata()[source]¶
Return a dictionary of metadata containing levels, sizeX, sizeY, tileWidth, tileHeight, magnification, mm_x, mm_y, and frames.
- Returns
metadata dictionary.
- getState()[source]¶
Return a string reflecting the state of the tile source. This is used as part of a cache key when hashing function return values.
- Returns
a string hash value of the source state.
- getTile(x, y, z, *args, **kwargs)[source]¶
Get a tile from a tile source, returning it as an binary image, a PIL image, or a numpy array.
- Parameters
x – the 0-based x position of the tile on the specified z level. 0 is left.
y – the 0-based y position of the tile on the specified z level. 0 is top.
z – the z level of the tile. May range from [0, self.levels], where 0 is the lowest resolution, single tile for the whole source.
pilImageAllowed – True if a PIL image may be returned.
numpyAllowed – True if a numpy image may be returned. ‘always’ to return a numpy array.
sparseFallback – if False and a tile doesn’t exist, raise an error. If True, check if a lower resolution tile exists, and, if so, interpolate the needed data for this tile.
frame – the frame number within the tile source. None is the same as 0 for multi-frame sources.
- Returns
either a numpy array, a PIL image, or a memory object with an image file.
- name = 'test'¶
Name of the tile source