Super Formula : $r ( \phi ) = \displaystyle \left ( \left | \frac{ \cos \left ( m \phi /4 \right )}{a} \right |^{n_2} + \left | \frac{ \sin \left ( m \phi /4 \right )}{b} \right |^{n_3} \right )^{-1/n_1}$
$a$:1
$b$:1
$m$:1
$n_1$:1.0
$n_2$:1.0
$n_3$:1.0