About Parallel and Perspective Views

You can specify 3D views of a model by defining either parallel or perspective projections.

The following illustration shows the same model in a parallel projection and perspective projection. Both are based on the same viewing direction.

Define Parallel Projections

To determine a 3D view in model space, you can do any of the following:

Note: You can set front and back clipping planes to limit the objects being displayed.

Define Perspective Projections

To determine a perspective projection, you can do one of the following:

A perspective view remains in effect until the perspective effect is turned off or until a new view is defined in its place.