2D Superformula

Symmetry
Exponents
Scale
r(θ) = (|cos(mθ/4)/a|^n2 + |sin(mθ/4)/b|^n3)^(−1/n1) m=7.0   n1=0.30   n2=1.70   n3=1.70
a=1.00   b=1.00   rmax=-