Cameron Halaby

f(x,y,t; σ) = 1.5 · (Σ_i=1² exp(−((x − x_i(t))² + (y − y_i(t))²) / 2σ_i²)) ·[sin(1.5(u·cos(0.1t) − v·sin(0.1t)) + t) · cos(1.5(u·sin(0.1t) + v·cos(0.1t)))] ·[sin(1.55u(1 + 0.1·sin(0.2t))) · cos(1.55v(1 + 0.1·sin(0.2t)))] |
u = (x − x_center​) ⋅ scale and v = (y − y_center) ⋅ scale