function shading545

subplot(3,1,1);  sphere(16)
axis square;  shading flat
title('Flat Shading')
subplot(3,1,2);  sphere(16)
axis square;  shading faceted
title('Faceted Shading')
subplot(3,1,3);  sphere(16)
axis square;  shading interp
title('Interpolated Shading')