Interactive Spiral Arms Visualizer

Spiral parameters

Show dashed spiral outline

Highlight mode Sequential: every i Only positive ηᵢ = Ggᵢ·a_dj,i Only negative ηᵢ = Ggᵢ·a_dj,i

Current index i—

Distance from center Rᵢ—

θᵢ mod 2π—

||Pᵢ − Pᵢ₊₁||—

ηᵢ = Ggᵢ·a_dj,i—

Ready.

Circle area uses sᵢ = s_min + (s_max − s_min)e^(−Rᵢ/Rd). Canvas circle radius is computed as √(sᵢ/π), so sᵢ is treated as pixel area.

Arm 1 η ≥ 0 Arm 1 η < 0 Arm 2 η ≥ 0 Arm 2 η < 0 Highlighted first-arm point