Module wm

All WM tooling

Structs

ClipLineResult

After clipping a line, return the altered line, the offset the new line starts at, and if the line is ccw

ClipLineResultWithBBox

Ensuring vec_bbox exists

LonLat

This class represents a point on the unit sphere as a pair of latitude-longitude coordinates. Like the rest of the “geometry” package, the intent is to represent spherical geometry as a mathematical abstraction, so functions that are specifically related to the Earth’s geometry (e.g. easting/northing conversions) should be put elsewhere.

TileChildren

The children of a tile

Enums

Source

The source of the coordinate inputs

Functions

altitude_from_mercator_z

Convert mercator projection’s Z-Value to altitude returns the altitude

altitude_to_mercator_z

Convert altitude to mercator projection Z-Value returns the Z-Value

bbox_to_xyz_bounds

Convert a bbox of the form [w, s, e, n] to a tile’s bounding box in the form of { minX, maxX, minY, maxY } The bbox can be in lon-lat (WGS84) or WebMercator (900913) The default expectation is in WebMercator (900913) returns the tile’s bounding box

circumference_at_latitude

The circumference at a line of latitude in meters.

clip_line

clip an input line to a bounding box Data should always be in a 0->1 coordinate system to use this clip function

convert_bbox

Convert a bbox of the form [w, s, e, n] to a bbox of the form [w, s, e, n] The result can be in lon-lat (WGS84) or WebMercator (900913)

get_zoom_size

Given a zoom and tilesize, build mercator positional attributes

lat_from_mercator_y

Convert mercator projection’s Y-Value to latitude returns the latitude

lat_to_mercator_y

Convert latitude to mercator projection Y-Value returns the Y-Value

ll_to_merc

Convert Longitude and Latitude to a mercator x-y coordinates Return the mercator x-y coordinates

ll_to_px

Convert Longitude and Latitude to a mercator pixel coordinate Return the mercator pixel coordinate

ll_to_tile

Convert a lat-lon and zoom to the tile’s x-y coordinates Return the tile x-y

ll_to_tile_px

given a lon-lat and tile, find the offset in pixels return the tile xy pixel

lng_from_mercator_x

Convert mercator projection’s X-Value to longitude returns the longitude

lng_to_mercator_x

Convert longitude to mercator projection X-Value returns the X-Value

merc_to_ll

Convert mercator x-y coordinates to Longitude and Latitude Return the Longitude and Latitude

mercator_lat_scale

Determine the Mercator scale factor for a given latitude, see https://en.wikipedia.org/wiki/Mercator_projection#Scale_factor

px_to_ll

Convert mercator pixel coordinates to Longitude and Latitude Return the Longitude and Latitude

px_to_tile

Convert a pixel coordinate to a tile x-y coordinate Return the tile x-y

split_tile

@param tile - the tile to split @param buffer - the buffer around the tile for lines and polygons @returns - the tile’s children split into 4 sub-tiles

tile_to_bbox

Convert a tile x-y-z to a bbox of the form [w, s, e, n] Return the bbox

xyz_to_bbox

Convert a tile x-y-z to a bbox of the form [w, s, e, n] The result can be in lon-lat (WGS84) or WebMercator (900913) The default result is in WebMercator (900913)