Expl CRESENT rotacija oko y ose x= cos(v)^5*cos(u)^7*sin(u)y= sin(u)^5+cos(v)^3*cos(u)^3z= sin(v)^6*cos(u)^4*sin(u)-1.7 <= u <= 1.7 0 <= v <= 2*pix=cos(u) y=u z=sin(u)*3