数学图形(2.23)Cylindric sine wave柱面正弦曲线

柱面正弦曲线

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

vertices =

t = from  to (*PI)

a =

b = rand2(, )

n = rand2(0.5, )

x = a*cos(t)

y = a*sin(t)

z = b*cos(n*t)