#
# The trefoil 
#
set dummy t;

tref = tube{ [ -2*cos(t)- 1/2*cos(5*t)+ 3*sin(2*t),
		-3*cos(2*t)+ 2*sin(t)- 1/2*sin(5*t), 
		2*cos(3*t)]
	    [ t=0: 2*pi][sample=100:20][radius=0.4]};
plot tref;
!sleep 100

	
