input mp-solid

%30''
figureespace(-10u,-10u,10u,10u);
Initialisation(500,70,10,20);
outcolor:=Hsvtorgb((250,0.45,1));
incolor:=1.1*gris;
draw SurfZ("if X++Y<0.001:10 else:10*sin(X++Y)/(X++Y) fi",-10,10,-10,10,60,120);
finespace;
end