How to make the 3D plot more smooth?

I want to plot 3D polygons in Matlab, however, the lines are not smooth and there are zigzags appearing in the box edges and the polygons' edges. Is there any way to correct this situation? Furthermore, how can I get a higher resolution picture? One picture is shown below. Thank you very much!

[Walter Roberson]

Which MATLAB version are you using, and which operating system?

Answer 1

[KALYAN ACHARJYA]

As the zig-zag lines are based on your code, For the second part of the question, you can save the display 3D plot in a high-resolution image as follows-

 %After plot statement
fig=gcf;
fig.PaperPositionMode = 'auto';
%'png format-you can change it' '-r_resolution value' change it as per require result
print('save_file_name','-dpng','-r500');