input mp-solid

%1"
figureespace(-10u,-10u,10u,10u);
Initialisation(500,50,60,40);
arcenciel:=true;
incolor:=0.9[gris,blanc];
draw SurfZ("X*Y*(X**2-Y**2)*0.1",-3,3,-3,3,30,60);
TraceAxesD(3,3,5);
finespace;
end