input mp-solid %8'' figureespace(-10u,-10u,10u,10u); Initialisation(500,70,30,20); outcolor:=Hsvtorgb((75,0.45,1)); incolor:=0.95white; draw SurfZ("if ((X=0) and (Y=0)):10 elseif X=0:10*sin(Y)/Y elseif Y=0:10*sin(X)/X else:10*(sin(X)/X)*(sin(Y)/Y) fi",-8,8,-8,8,45,90); finespace; end