Use the arrow keys or space to navigate the slides. Use fullscreen if possible. Please make sure to credit the creators of the algorithms we use. You can see the credits below. The tutorial works. If your project doesn't, it means you failed to follow it. Go through again and read closer. Note that triangle sorting cannot be perfectly accurate.
I just changed the rotation scripts. You now need to hold the mouse button to rotate, but it doesn’t reset when you start a new drag.