Klein Bottle

Klein Bottle :
x=sin(2u)(2.2+cos(u)sin(v/2)-sin(u)sin(v))
y=cos(2u)(2.2+cos(u)sin(v/2)-sin(u)sin(v))
z=sin(u)sin(v/2) + cos(u)sin(v)

Jui-Tang chen, 2015,3,26, GeoGebra 製作