gws.test.mockmap.services¶
Mockmap services: protocols, tile addressing, rendering.
Source code: gws.test.mockmap.services
Module Contents¶
- gws.test.mockmap.services.create(cfg: dict, scn: gws.test.mockmap.scene.Scene) Service¶
- gws.test.mockmap.services.draw_probe(img: gws.Image)¶
Stamp a pixel-aligned checkerboard on a fixed lattice.
The only mark in the image drawn in raster space rather than world space, so it is exactly aligned to the output pixels and carries no antialiasing: at 1:1 it is two colors and nothing else. Any resampling downstream - a scale off the ladder, an unwanted reprojection, a half-pixel shift - softens its edges into intermediate grays. Repeated across the image so it survives cropping into tiles.
Blocks are PROBE_BLOCK pixels, not single pixels. Single pixels sit at the Nyquist frequency and detect the smallest possible resampling, but they also collapse under the 2x device scaling of a HiDPI screen, so the mark cannot be read by eye in a browser. Blocks trade some sensitivity for legibility.
- gws.test.mockmap.services.METERS_PER_DEGREE = 111319.4907932736¶
- gws.test.mockmap.services.MIN_RESOLUTION = 1.0¶
- gws.test.mockmap.services.PIXEL_SIZE = 0.00028¶
- gws.test.mockmap.services.PROBE_BLOCK = 4¶
- gws.test.mockmap.services.PROBE_SIZE = 16¶
- gws.test.mockmap.services.PROBE_STEP = 128¶
- class gws.test.mockmap.services.Service(cfg: dict, scn: gws.test.mockmap.scene.Scene)¶
- bbox¶
- cfg¶
- crs¶
- extent¶
- layer¶
- overlay¶
- overlayTile¶
- probe¶
- restful = False¶
- scene¶
- style¶
- tms¶
- tmsOrigin = 'nw'¶
- type = ''¶
- uid¶
- version = ''¶
- wgs¶
- axis_extent(ext)¶
- abstractmethod handle(rest, query, base)¶
- image(extent, size, label='')¶
- tile(z, x, y)¶
- xml(func, base)¶
- class gws.test.mockmap.services.Tile(cfg: dict, scn: gws.test.mockmap.scene.Scene)¶
Bases:
Service- tmsOrigin = 'sw'¶
- type = 'tms'¶
- handle(rest, query, base)¶
- gws.test.mockmap.services.TILE_SIZE = 256¶
- class gws.test.mockmap.services.Tms(crs: gws.Crs, origin: str)¶
A metric tile grid for a CRS.
The frame is the CRS extent, level 0 is a single tile across its width and levels run down to MIN_RESOLUTION. EPSG:3857 is the exception: XYZ carries no grid metadata, so clients assume the de-facto slippy-map frame, a square. That is a convention, not something derivable from the CRS, whose own extent spans latitude +-85.06 degrees.
- bbox¶
- crs¶
- matrices = []¶
- origin¶
- originX = -20037508.342789244¶
- originY = 20037508.342789244¶
- resolutions = []¶
- tileSize = 256¶
- uid¶
- tile_extent(z: int, x: int, y: int) gws.Extent¶
- gws.test.mockmap.services.TYPES¶
- gws.test.mockmap.services.WEBMERCATOR_SQUARE = 20037508.342789244¶
- class gws.test.mockmap.services.Wms(cfg: dict, scn: gws.test.mockmap.scene.Scene)¶
Bases:
Service- tmsOrigin = ''¶
- type = 'wms'¶
- handle(rest, query, base)¶
- class gws.test.mockmap.services.Wmts(cfg: dict, scn: gws.test.mockmap.scene.Scene)¶
Bases:
Service- restful = False¶
- tmsOrigin = 'nw'¶
- type = 'wmts'¶
- handle(rest, query, base)¶
