Along with extrusion and revolving, Illustrator offers a third 3D effect—rotation. I won't include a tutorial here, but briefly, the interesting thing about 3D rotation is that it's 3D rotation.
You've undoubtedly experimented with rotation:
- You can rotate a photo by 90 degrees in any photo-editing program.
- You can rotate a 2D object in Illustrator by using the Rotate tool—or simply by hovering over an anchor point until the two-headed rotation arrow appears, and then clicking and dragging to rotate the object clockwise or counterclockwise.
What's different about 3D rotation is that you can rotate an object on its z axis; that is, from front to back.