cyrindical
a=6*cos(u)*sin(v)
R=u*6*v
z=12*u
min u=-2 max u=2 steps=200
min v=-2 max v=2 steps=200
cartesian
x= cos(u)*sin(v)
y=v*u
z=5*u
min u=-10 max u= 10 steps=200
min v=-10 max v= 10 steps=200
