def finish
bbox = BoundingBox.new(params[:minlon], params[:minlat], params[:maxlon], params[:maxlat])
format = params[:format]
if format == "osm"
def finish
bbox = BoundingBox.new(params[:minlon], params[:minlat], params[:maxlon], params[:maxlat])
format = params[:format]
if format == "osm"
format = params[:osmarender_format]
zoom = params[:osmarender_zoom].to_i
width = bbox.slippy_width(zoom).to_i
format = params[:osmarender_format]
zoom = params[:osmarender_zoom].to_i
width = bbox.slippy_width(zoom).to_i