Zooming, Rotation, and Panning

Model Viewer displays an object as viewed from a particular viewpoint. Zooming, rotation, and panning are different ways to interact with the object by changing the viewpoint.

Zooming, rotation, and panning are performed by mouse buttons. Two types of mouse interactions are provided:

Trackball-mode interaction is the default. However, the user may change the interaction mode from one to the other.