2012

aspect ratio Aspect ratio is the proportion of X-axis to Y-axis size. For example, in exporting
a bitmap of a viewpoint, maintaining the aspect ratio would keep the proportion of the
view even if the number of pixels was different.
camera-centric Navigation modes in which the camera is moved around the model.
field of view The field of view of a camera is the angle that the camera can see. A large field
of view will fit more into the view, but will look distorted and a small field of view will tend
to make the view more flat, tending towards an orthographic view. There are two fields of
view in Autodesk Navisworks - vertical and horizontal. Editing one will change the other
and the two are related by the viewpoint’s
aspect ratio (page 307).
focal point The focal point is the position in 3D space that the camera will rotate around
or zoom into in examine, orbit, turntable and zoom modes.
model centric Navigation modes in which the model is moved in front of the camera.
roll The roll of the camera is its angle around the viewing axis. This cannot be edited in a
navigation mode where the world up vector stays upright (walk, orbit and turntable).
saved attributes Each viewpoint can optionally save the state of its hidden and “required”
items, as well as any material (color and transparency) overrides. Then, on recalling the
viewpoint, those same items are re-hidden, re-made required, and the materials reinstated.
This can be useful in the creation of animations when dragging on viewpoints onto an
empty animation.
tilt angle This is indicated in the scene’s units below (negative) or above (positive) horizontal
(0) at the base of the Tilt window.
viewpoint up vector The direction that Autodesk Navisworks considers “up” is called the
“viewpoint up vector”. This is maintained in the walk, orbit and turntable modes. This may
be also referred to as “world up vector”.
Glossary | 307