#http://www.mathcurve.com/courbes3d/helicespheric/helicespheric.shtml

vertices = 12000

t = from 0 to (80*PI)

k = rand2(0.0, 1)

s = sin(t)
c = cos(t)

a = sin(k*t)
b = cos(k*t)

r = 10

x = r*(k*c*b - s*a)
z = r*(k*s*b + c*a)
y = r*sqrt(1 - k*k)*b
