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time).
Camera-Centric
Navigation modes in which the camera is moved around the model (c.f.
model-centric).
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 JetStream - vertical
and horizontal. Editing one will change the other and the two are related
by the viewpoint's aspect ratio.
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
(c.f. camera-centric).
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 bar.
World Up Vector
The direction that JetStream considers "up" is called the "world-up
vector". This is maintained in the walk, orbit and turntable modes.
Clash Detective Terminology
Clash Status
Each clash has a current status associated with it and each status has a
colored icon to identify them. This status is updated automatically by
Clash Detective or can be manually overridden if desired. The statuses
are as follows:
• New: a clash found for the first time in the current run of the test.
• Active: a clash found in a previous run of the test and not
resolved.
Glossary
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