#http://www.mathcurve.com/courbes2d/poinsot/poinsot.shtml

vertices = 12000

t = from (-20*PI) to (20*PI)

a = rand2(0.1, 1)
b = rand2(0.1, 1)

k = rand2(0.1, 0.8)

r = 10

p = r*a/(a*ch(k*t) + b*sh(k*t))

x = p*sin(t)
y = p*cos(t)