NAME

Geo::SpatialDB::Tile

VERSION

version 0.000_001

DESCRIPTION

ATTRIBUTES

id

Unique ID for the tile. Useful for caching.

lat0

South edge

lon0

West edge

lat1

North edge

lon1

East edge

areas

Array of partial areas, each a hashref of the form:

{
  id         => $area_id,
  type       => $taxonomy_spec,
  local_path => [
    [ lat,lon, lat,lon, lat,lon, ... ],
    ...
  ],
  tag_cache  => { k => v, ... }
}

id

Entity ID, used to look up the official Entity of the area.

type

Copied from the Entity

tag_cache

Subset of the tags on the Entity object. When tile-building is configured, and can control which tags get cached per-tile.

local_path

Subset/approximation of the border path of the area which lies within the tile.

All paths are in counter-clockwise winding order, so that the area of the entity is to the "left" of the line.

There may be multiple paths, because the path of the entity might snake back and forth across the boundary of the tile. If there are not any paths, it means the tile is contained within the entity.

The path may be an abbreviated form of the actual path, for wide-area tiles.

routes

Array of routes within or passing through the tile. Each route is a hashref of the form:

{
  id    => $route_id,
  type  => $taxonomy_spec,
  lanes => $n,  # negative means one-way
  local_path  => [
    [ lat,lon, lat,lon, ... ],
    ...
  ],
  tag_cache => { k => v, ... },
}

id

Entity ID, used to look up the official Entity of the route.

type

Copied from the entity

lanes

The absolute value of this number is the number of lanes. If negative, it means the road is one-way.

local_path

Subset/approximation of the route's path which lies within the tile.

If the route has a direction, the points of the path will be in the forward direction along the route.

tag_cache

Subset of the tags on the Entity object. When tile-building is configured, and can control which tags get cached per-tile.

AUTHOR

Michael Conrad <mike@nrdvana.net>

COPYRIGHT AND LICENSE

This software is copyright (c) 2016 by Michael Conrad.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.