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SYNOPSIS

   my $tile = Imager::Bing::MapLayer::Tile->new(
       quad_key  => $key,       # the "quad key" for the tile
       base_dir  => $base_dir,  # the base directory for tiles (defaults to cwd)
       overwrite => 1,          # overwrite existing tile (default) vs load it
       autosave  => 1,          # automatically save tile when done (default)
    );

DESCRIPTION

This is the the base tile class for Imager::Bing::MapLayer. It is intended for internal use, but can be subclassed as needed.

ATTRIBUTES

quad_key

The quadrant key of the tile.

level

The zoom level for this tile. It is determined by the "quad_key".

tile_coords

The tile coordinates of this tile. They are determined by the "quad_key".

pixel_origin

The coordinates of the top-left point on the tile. They are determined by the "quad_key".

width

The width of the tile.

height

The height of the tile.

image

The Imager object.

filename

The full pathname of the tile, when saved.

METHODS

build_filename

This method returns the default filename of the tile, which consists of the "base_dir" and "quad_key". It can be overridden in subclasses for map systems that require alternative filenames.

latlon_to_pixel

Translate latitude and longitude to a pixel on this zoom level.

latlons_to_pixels

Translate a list reference of latitude and longitude coordinates to pixels on this zoom level.

save

Save this tile.