Trimming Complex Objects in AutoCAD

An object can be one of the cutting edges and one of the objects being trimmed. For example, in the light fixture illustrated, the circle is a cutting edge for the construction lines and is also being trimmed.

When trimming complex objects, using different selection methods can help you choose the right cutting edges and objects to trim. In the following example, the cutting edges are selected with a crossing window.

In the following example, fence selection is used to select a series of objects for trimming.

In paper space, you can use viewport borders as cutting edges. However, you cannot trim the viewports themselves.