Tirex::Metatile->new( ... )

Create new metatile object.

A metatile always needs the following parameters:

 map  the map config to use for rendering
 x    metatile x coordinate
 y    metatile y coordinate
 z    zoom level

You can give any x and y coordinate in the range 0 .. 2^z-1. It will be rounded down to the next tile coordinate.

Croaks if there is a problem with the parameters.

Tirex::Metatile->new_from_filename_and_map($filename, $map)

Create metatile from filename. The first directory element must be the zoom level.

Optionally, the filename can start with '/' or './'.

Tirex::Metatile->new_from_lon_lat(map => $map, lon => $lon, lat => $lat, z => $z)

Create metatile from zoom, longitude, and latitude.

$mt->get_x()

Get x coordinate.

$mt->get_y()

Get y coordinate.

$mt->get_x()

Get zoom.

$mt->get_map()

Get map.

$mt->to_s()

Return string describing this metatile in the format 'map=MAP z=Z x=X y=Y'

$mt->equals($other_metatile)

Returns true if both metatiles are the same, false otherwise.

The same tile means: same map, same x and y coordinates and same zoom level.

$mt->up()

Return the metatile one zoom level above this metatile that contains this metatile.

$mt->get_filename()

Return filename for this metatile.

Format is something like:
[zoom]/[path].meta

  zoom          zoom level
  path          path with 4 directory elements and a filename
                based on x and y coordinates

$mt->exists()

Does the metatile file for this metatile exist?

$mt->older($time)

Is the metatile file older than the given time?

Returns 2 if the file doesn't exist.

$mt->newer($time)

Is the metatile file newer than the given time?

Returns 2 if the file doesn't exist.

$mt->size()

Return size of the metatile file.