2012

Navisworks merges all shapes on the same level or in the same cell and with the same color
into a “Shape Set” if these shapes have less than or equal to the number of vertices given
by the Shape Merge Threshold.
Selection Terminology
These are terms specific to Autodesk Navisworks that are used in relation to selecting items.
composite objects A composite object is a group of geometry that is considered a single
object in the selection tree. For example, a window object might be made up of a frame and
a pane. If a composite object, the window object would be both the frame and the pane
and be selected all at once.
instances An instance is a single object, which is referred to several times within a model,
for example a tree. This has the advantage of cutting down on file size by not unnecessarily
repeating an object.
item name The original CAD or Autodesk Navisworks assigned identifier. Any item can
have a name and this name will usually come from the original CAD package that the model
was created in.
item type Every item in Autodesk Navisworks has a type. Examples of types are reference
files, layers, instances (sometimes called inserts), and groups. Every CAD package also has
a number of geometry types, for example, polygons, 3D Solids, and so on.
selection resolution The selection resolution is the level in the selection tree you start
selecting at. You can cycle through items in the tree by holding down the SHIFT key during
a selection.
user name and internal name Each category and property name has two parts - a user
visible string which is localized and an internal string which isn’t and is mainly used by the
API. By default when matching names in the Smart Tags and Find Items dialog boxes,
both parts must be the same, but you can use the flags to match only on one part. You
might use Ignore User Name if you wanted to match something irrespective of which
localized version was being used.
Viewpoint Terminology
angular speed The speed that the camera moves when turning right and left in any
navigation mode.
anti-aliasing Anti-aliasing improves image quality by softening the jagged edge appearance
of sharp lines. 2x to 64x refers to the extra number of frames that are required for the
anti-aliasing process. The greater the number of frames, the finer the effect, (with the
consequent increase in rendering time).
746 | Chapter 17 Glossary