%k3dsurf Hellipticparabol

input mp-solid

invnormale:=-1;

%1''
figureespace(-10u,-10u,10u,10u);
Initialisation(1000,50,20,50);
incolor:=gris;
arcenciel:=true;
draw Sparam("(2*v*cos(u),v*sin(u),v**2)",0,2*pi,0.2513,0,2,0.08);
finespace;
end