Ask tirex to render and write metatile via tirex protocol.
syntax: result = osm.tirex.request(map, x, y, z1, z2, priority)
Request enqueue command to rendering map 'map' with x/y/z1 cordination and priority. And also request to render in background between zoom z1 to z2. If request fails return nil.
When z1 == z2, just ask to render single tile.
syntax: result = osm.tirex.cancel(map, x, y, z1, z2, priority)
Request dequeue command to rendering map 'map' with x/y/z1 cordination and priority.And also request to cancel in background between zoom z1 to z2. If request fails return nil.
syntax: result = osm.tirex.ping()
Request ping command. If request fails return nil.
syntax: result = osm.tirex.send_request(map, x, y, z)
Request enqueue command to rendering map 'map' with x/y/z cordination. If request fails return nil.
syntax: result = osm.tirex.enqueue_request(map, x, y, z, priority)
Request enqueue command to rendering map 'map' with x/y/z cordination and priority. If request fails return nil.
syntax: result = osm.tirex.dequeue_request(map, x, y, z, priority)
Request dequeue command to rendering map 'map' with x/y/z cordination and priority. If request fails return nil.