在球上以SIN曲线的轨迹游走.
#http://www.mathcurve.com/courbes3d/couronnetangentoidale/couronnetangentoidale.shtml vertices = t = from to (*PI) a =
n = rand2(0.5, ) x = a*sin(n*t)*cos(t)
y = a*sin(n*t)*sin(t)
z = a*cos(n*t)
有SIN的就会有与它相反的COS的:
#http://www.mathcurve.com/courbes3d/clelie/clelie.shtml vertices = t = from to (*PI) a =
n = rand2(0.1, ) x = a*cos(n*t)*cos(t)
y = a*cos(n*t)*sin(t)
z = a*sin(n*t)
二者生成的图形差不多
