function demoDisplayclearclcclose all;x,y,z = heart;bottomZ = min(z(:);radius = abs(bottomZ);axis vis3daxis offdaspect(1.6, 1, 1.875);hold on;markerColor = 0.5, 0.5, 0.5;lineColor = 0.7, 0.7, 0.7;figWidth = 800figHeight = 600;screenSize = get(0, ScreenSize);X0 = (screenSize(3)-figWidth)/2;Y0 = (screenSize(4)-figHeight)/2;set(gcf, Position, X0,Y0, figWidth, figHeight);camtarget(0, 0, 0);set(gcf,Renderer,zbuffer);set(gcf,DoubleBuffer
