To use the Rotate Gizmo, click on the lower part of the Gizmo tool button and select Rotate Gizmo, as shown earlier. Now, if you select an object, the Rotate Gizmo icon will appear at the center point of the selected object, as shown in the following diagram. The Rotate Gizmo can be used to effectively and quickly rotate 3D objects as follows:

1. Once you select the object, hover the mouse cursor over the circle representing the desired rotation direction. Notice that the rotation circle will be highlighted in a yellowish color, and that the rotation axis will be shown infinitely extended.

2. Click and move the mouse to rotate the object and then click again when you arrive at the desired rotation angle. You can also enter the rotation angle by using the keyboard and then pressing Enter, as shown in the following diagram:

The Rotate Gizmo tool has a number of options/alternative methods that appear in the command bar after you click and start the rotation. There are five options, as shown in the following diagram:

These options are explained as follows:

• Base point: The first option is called Base point. It is similar to the base point option in the Move Gizmo. To activate it, click on the option name, or just type B and then press Enter. By default, the Rotate Gizmo will be placed at the center of the selected object(s), and the object will be rotated about that point. You can use the Base point option to change the rotation base point. Just activate the option and choose the new base point location, as shown in the following diagram:

• Copy: The second option is called Copy. To activate it, click on the option name in the command bar, or you can just type C and then press Enter. This option will keep the original object and create a new rotated copy of the object. Notice that the Rotate Gizmo tool will still be active after you create the first copy, thereby allowing you to create multiple rotated copies.
• Undo: The next option is called Undo. To activate it, click on the option name in the command bar, or you can just type U and then press Enter. As in the Move Gizmo, this option is used to undo any changes you have made using the other options. For example, if you activated the copy option and created multiple copies of the object, you can delete the last one created using the undo option, or if you changed the base point, you can return to the default base point location using the undo option.
• Reference: The next option is called Reference. To activate it, click on the option name in the command bar, or you can just type R and then press Enter. When you start rotation, a reference line is generated between the rotation base point and the mouse cursor. By default, this reference line is aligned with the rotated object. The reference option can be used to change the angle of the reference line, as shown in the following diagram:

• eXit: The last option is eXit. This option can be activated by typing X and then pressing Enter. This option will deactivate the Rotate Gizmo tool.