Bluelines → Annulus

Row index → angle (θ), bell position → radius.

0.60
2.0
1.00
0.010

r = pR + (1−p)R · x
Linear map  ←  k  →  Compressed
traditional blueline
x = normalised bell position (1–6 → 0–1) maps to radius via r = pR + (1−p)R · x^k. k=1 → linear  |  k=0.5 → sqrt  |  k<1 compresses rings outward  |  k>1 compresses rings inward.