// gen_swimmers --poly=-7,-27:6,-56:78,-23:66,7 --swimmers=5 --sep=20
poly = pts={-7,-27:6,-56:78,-23:66,7}
swimmer = name=p01, x=20.6, y=-21.5
swimmer = name=p02, x=13.77, y=-47.58
swimmer = name=p03, x=49.1, y=-8.6
swimmer = name=p04, x=67.71, y=-25.57
swimmer = name=p05, x=-6, y=-29