returns cloudmade tiles in range

cloudmade tiles

# Format:
# tiles = [
#     zoom => [
# 	    [ tx, ty, tz ],
# 	  ],
# 	  [
# 	    [ tx, ty, tz ],
# 	  ],
#     zoom => [
# 	    [ tx, ty, tz ],
# 	  ],
# 	  [
# 	    [ tx, ty, tz ],
# 	  ],
#     zoom => [
# 	    [ tx, ty, tz ],
# 	  ],
# 	  [
# 	    [ tx, ty, tz ],
# 	  ]
# ]

def returnTiles(latmin,latmax,lonmin,lonmax,zoommin,zoommax)

  cm = Client.from_parameters(API KEY)

	tiles = []

  for zoom in zoommin..zoommax

    txmin = cm.tiles.xtile(lonmin,zoom)
    txmax = cm.tiles.xtile(lonmax,zoom)

    tymin = cm.tiles.ytile(latmax,zoom)
    tymax = cm.tiles.ytile(latmin,zoom)

    ntx = txmax - txmin + 1
    nty = tymax - tymin + 1

    tiles[zoom] = []
    
    for tx in txmin..txmax
      for ty in tymin..tymax
        tiles[zoom].push([tx,ty,zoom])
      end
    end

  end

  return tiles

end