5KLUENPI44MTO7SYYCSI2GY3ZXT6MUUUNR3V7MFUWBLBDRJDNJMQC
MHIAW5Y7FZ77GIO3LCTMFVFO5OO5Y7G6BJ2TGAINLHHFJSLTH6BQC
QHTTPQTALS2XJVJJ6CFOM5TKE7X3JJC73R465P2D6UCXD5BIIVXQC
RSWQPKYWMLVXPFAGSCLBEKSXR2VMBHQDWCHTZ3DNILL475H7MHTQC
radius = m * (LEAF_SIZE - PADDING) / 2 - 1
radius = m * min((r - l), (b - t)) / 4