Slippers surface

By Roger Bagula
Graphics by Paul Bourke

August 2002

x = (2 + cos(u)) cos(v)3 sin(v)

y = (2 + cos(u+2pi/3)) cos(2pi/3+v)2 sin(2pi/3+v)2

z = -(2 + cos(u-2pi/3)) cos(2pi/3-v)2 sin(2pi/3-v)3

0 <= u <= 2 pi, 0 <= v <= 2 pi