input mp-solid

figureespace(-10u,-10u,10u,10u);
Initialisation(50,0,-20,100);
incolor:=0.75[orange,white];
outcolor:=0.5[blue,white];
draw Sparam("(cos(v)*sqrt(1+u*u),sin(v)*sqrt(1+u*u),0.6*u)",-1,1.5,0.1,-5*pi/6,5*pi/6,pi/36);
finespace;
end