#
20*cos(2*pi*u)
20*sin(2*pi*u)
50*v-25
#
15*sin(pi*u)*cos(2*pi*v)
15*sin(pi*u)*sin(2*pi*v)
15*cos(pi*u)+40
#E
5*cos(2*pi*u)*cos(pi/4)+40*v*sin(pi/4)+20
5*sin(2*pi*u)
40*v*cos(pi/4)-5*cos(2*pi*u)*sin(pi/4)+20
#
5*cos(2*pi*u)*cos(pi/4)-40*v*sin(pi/4)-20
5*sin(2*pi*u)
40*v*cos(pi/4)+5*cos(2*pi*u)*sin(pi/4)+20
#E
5*cos(2*pi*u)*cos(pi/4)-60*v*sin(pi/4)+50
5*sin(2*pi*u)
60*v*cos(pi/4)+5*cos(2*pi*u)*sin(pi/4)-60
#
5*cos(2*pi*u)*cos(pi/4)+60*v*sin(pi/4)-50
5*sin(2*pi*u)
60*v*cos(pi/4)-5*cos(2*pi*u)*sin(pi/4)-60
