Rotating in the 3D view in Altium Designer can provide a better perspective on your PCB design. Here are the steps to easily rotate in 3D view in Altium Designer:

1. Open your PCB design in Altium Designer and switch to the 3D view mode by clicking on the 'View' tab and selecting '3D Layout Mode'.

2. Once in the 3D view mode, you can rotate the view by holding down the right mouse button and dragging the mouse in the desired direction. This will allow you to rotate the view and see your PCB design from different angles.

3. You can also use the keyboard shortcuts to rotate the view. Press and hold the 'Shift' key and the right mouse button, then drag the mouse to rotate the view.

4. Another way to rotate the view is by using the navigation cube located in the bottom right corner of the 3D view window. Clicking and dragging on the navigation cube will allow you to rotate the view easily.

5. If you want to reset the view back to its default position, simply click on the 'Reset View' button located in the top toolbar of the 3D view window.

By following these simple steps, you can easily rotate in 3D view in Altium Designer and get a better perspective on your PCB design. This can be helpful for checking for clearance between components, viewing the layout from different angles, and getting a better understanding of the spatial relationships between different elements of the design.

In conclusion, rotating in 3D view in Altium Designer is a simple and useful feature that can help you gain a better understanding of your PCB design. By following the steps outlined above, you can easily rotate in 3D view and take advantage of this feature to improve your overall design process.